Question 1

Is the solubilizer S-15 harmful to the human body? Does it have an impact on the environment?

Accepted Answer

The solubilizer S-15 is a low-toxicity, low-irritation non-hazardous chemical with extremely low safety risk to humans and good environmental compatibility, making it a green and environmentally friendly surctant. Detailed Description The solubilizer S-15 (PEG-40 Hydrogenated Castor Oil) is a non-ionic surctant derived from natural hydrogenated castor oil. According to the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) classification standard, this product is not classified as a hazardous substance or mixture, with no signal word, no hazard pictograms, and no hazard statements, and is safe for humans under normal conditions of use. From a toxicological perspective, the acute oral toxicity LD₅₀ of the solubilizer S-15 in rats is greater than 2000 mg/kg, which does not ll into the acute toxicity category, meaning that even if accidentally ingested, a considerable dose would be required to cause harm. In terms of skin safety, based on OECD 404 test data, this product is non-irritating to the skin; the OECD 406 guinea pig maximization test results show that it is not sensitizing and does not cause skin allergic reactions. The only thing to note is that eye contact may cause mild temporary discomfort, but it does not meet the hazard classification criteria, and rinsing promptly if accidentally splashed into the eyes is sufficient. In terms of the environment, the solubilizer S-15 exhibits excellent eco-friendly characteristics. Its acute toxicity to aquatic organisms is extremely low—the 96-hour LC₅₀ for fish is greater than 100 mg/L, and the 48-hour EC₅₀ for daphnia is greater than 100 mg/L, categorizing it as essentially harmless to aquatic life. More importantly, under the OECD 301B standard, the 28-day biodegradation rate of this product exceeds 60%, making it readily biodegradable and not persistent in the natural environment. Additionally, its octanol/water partition coefficient (log Kow) is less than 3, indicating no significant bioaccumulation potential and no enrichment or amplification through the food chain. Technical Parameters Human Health Safety Indicators Acute Toxicity (Oral LD₅₀ in Rats)> 2000 mg/kg (Non-acute toxicity category) Skin Corrosion/IrritationNon-irritating (OECD 404) Eye Damage/IrritationMay cause mild temporary discomfort (Does not meet hazard classification criteria) Skin SensitizationNegative, non-sensitizing (OECD 406) Mutagenicity/Carcinogenicity/Reproductive ToxicityNo classification in any category Environmental Safety Indicators Acute Toxicity to Fish (96h LC₅₀)> 100 mg/L Acute Toxicity to Daphnia (48h EC₅₀)> 100 mg/L Biodegradability (OECD 301B, 28 days)> 60% (Readily biodegradable) Bioaccumulation Potential (log Kow)< 3 (No significant bioaccumulation potential) Physical Hazards Flash Point (Closed Cup Method)> 100°C (No risk of flammability or explosion under normal conditions) Application Recommendations Given the excellent safety and environmental properties of the solubilizer S-15, it can be confidently applied in the following fields: Personal Care Products: Used as a solubilizer for fragrances and essential oils in transparent shampoos, body washes, toners, and other products that come into direct contact with the skin, being mild and non-irritating. Pesticide Formulations: Acts as a solubilizer and emulsifier in emulsifiable concentrates, emulsion concentrates, and microemulsions, aligning with the development direction of green pesticide adjuvants. Industrial Cleaning: Used in hard surce cleaners to solubilize hydrophobic soils, with low environmental impact when discharged after use. Textile Dyeing and Finishing: Serves as a leveling agent and dispersing aid; this product can be rapidly degraded in processing wastewater, reducing the load on terminal wastewater treatment. Precautions Although the product has a high safety rating, it is still recommended to follow good industrial hygiene practices and wear chemical safety goggles and protective gloves during operation. If accidentally splashed into the eyes, immediately rinse gently with plenty of clean water for at least 15 minutes; if wearing contact lenses, remove them and continue rinsing. Seek medical attention if eye discomfort persists. Avoid prolonged skin contact or ingestion; thoroughly wash hands and any contacted skin after operation. Store in a cool, dry, and well-ventilated place, recommended temperature 5°C to 40°C, away from incompatible substances such as strong oxidizers, strong acids, and strong bases. Although this product is readily biodegradable, in case of a large spill, containment measures should be taken to prevent direct discharge into sewers or natural water bodies.

Question 2

What should I do if problems occur during the use of solubilizer S-15? How to obtain technical support?

Accepted Answer

If you encounter problems when using solubilizer S-15, it is recommended to first conduct on-site troubleshooting based on product characteristics and process parameters. If the issue cannot be resolved, you can directly contact the technical team of Haian Guoli Chemical Co., Ltd. for one-on-one professional support. Common usage issues and troubleshooting directions Solubilizer S-15 (PEG-40 Hydrogenated Castor Oil) may occasionally encounter issues such as incomplete solubilization, system turbidity and stratification, or abnormal foaming in formulation applications. When such problems occur, it is recommended to first self-check from the following dimensions: 1. Poor solubilization effect or system turbidity1. Check whether the dosage is appropriate — The HLB value of solubilizer S-15 is 14-16, the cloud point is 65-75°C (1% aqueous solution), and the critical micelle concentration (CMC) is about 0.1~0.5 g/L. If the substance to be solubilized (such as fragrance or essential oil) is highly hydrophobic, the addition ratio of S-15 should be appropriately increased. It is usually recommended to explore the optimal ratio between solubilizer and solubilized substance in the range of 1:1 to 3:1.2. Pay attention to the feeding sequence and mixing process — It is recommended to pre-mix the solubilizer S-15 with the oily substance to be solubilized evenly, then slowly add the water phase while stirring. If a large amount of water is added at once or stirring is insufficient, an unstable coarse emulsion may form, leading to a white and turbid system.3. Check the system pH and electrolyte environment — This product has excellent stability in acids, alkalis, and hard water, but extreme pH (such as 12) may still weaken its solubilization ability. Please ensure the final formulation pH is within the stable range of 5.0~7.0. 2. Abnormal foam occurrenceSolubilizer S-15 is inherently a low-foaming nonionic surctant. If abnormal foam appears in the formulation, it is usually caused by other co-blended surctants or air entrainment from mechanical forces. The mechanical stirring intensity can be appropriately reduced, or a small amount of defoamer can be added for adjustment. 3. Abnormal product self-stateThe normal appearance should be a colorless to slightly yellow transparent liquid, with a refractive index of about 1.466 (20°C) and a viscosity of about 550-650 mm²/s (20°C). If obvious turbidity, stratification, or gelation occurs, it may be due to storage temperatures below 5°C or above 40°C. Restoring the barrel liquid to a 15-30°C environment and stirring gently can usually restore it to a transparent and uniform state. If abnormalities persist, the product may be contaminated or expired; please stop using it. How to obtain official technical support from Guoli Chemical Haian Guoli Chemical Co., Ltd. has an experienced application technology team that can provide in-depth support for formulation issues involving solubilizer S-15 in fields such as agrochemical preparations, daily chemical products, industrial cleaning, and textile printing and dyeing, including formulation optimization, compatibility evaluation, and process route suggestions. Methods to obtain technical support are as follows:1. Call the official service hotline — You can call the sales or technical service phone number published on the Guoli Chemical official website to directly describe the problem you encountered.2. Contact the regional sales manager or agent — Reporting the problem through the service personnel who supply you daily is the most efficient way. They can bring samples to your site or assist in contacting the headquarters laboratory for formulation analysis.3. Website message and email consultation — Submit the problem materials (including formulation dosage, operation process, photos of abnormal phenomena, product batch number, etc.) via the company's official website technical support email or online form. Professional technical engineers will reply as soon as possible, and if necessary, samples can be sent to the Guoli Chemical application laboratory for reproduction and analysis. Checklist before contacting technical support Product batch number and purchase voucher: Provide the complete batch number information on the packaging drum of solubilizer S-15 to trace production records and inspection reports. Detailed problem description: Clearly describe the abnormal phenomenon (such as turbidity, stratification, gelation, abnormal foam, etc.) and the stage at which the phenomenon first appeared (during feeding, after standing, after dilution, etc.). Formulation and process: List the key components and approximate contents of your current formulation, as well as the amount of S-15 added, addition sequence, stirring conditions, and temperature, so the technical team can quickly identify interfering ctors. Photos or samples: If possible, retain the problem sample and take clear photos or videos to send to the technical personnel.

Question 3

How to purchase solubilizer S-15? What is the minimum order quantity?

Accepted Answer

Solubilizer S-15 is a standard supply product with various packaging specifications. For specific prices and minimum order quantities, please contact the Guoli Chemical sales team for the latest quotation. Detailed Description Solubilizer S-15 (PEG-40 Hydrogenated Castor Oil, CAS number: 39464-69-2) is a regular product of Hai'an County Guoli Chemical Co., Ltd., with stable inventory and long-term availability. According to the Guoli Chemical product database, the current quotation for this product is on a "price negotiable" basis — the actual transaction price is influenced by order quantity, packaging type, transportation distance, and market conditions, and must be provided by the sales team with a tailored quotation. The reference price in the database is indicated in units of "yuan/ton", and the final price shall be confirmed in the purchase and sale contract or order agreed upon by both parties. This product is a non-ionic surctant with an HLB value of 14-16 and an effective content of ≥99.0%. It is widely used in agricultural formulations, daily chemicals, industrial cleaning, and textile printing and dyeing. The product has low aquatic toxicity and is easily biodegradable (degradation rate >60% under OECD 301B standard within 28 days), meeting green chemical requirements. Packaging Specifications and Ordering Information ItemDetails Packaging Options50kg plastic drum / 200kg plastic drum / IBC tote Pricing Unityuan/ton Minimum Order QuantityNo public data available; it is recommended to contact the sales team for confirmation (usually starting from a single drum) Price ValidityPrices fluctuate with the market; the quotation is for reference only and subject to confirmation upon order placement Delivery TimeDepends on inventory status and order quantity; please contact sales for confirmation Suggested Purchase Process If you are interested in purchasing Solubilizer S-15, we recommend following the steps below: Step 1 — Clarify your needs: Determine the required purchase quantity, packaging requirements (50kg/200kg/IBC tote), and target application area, so the sales team can provide precise formulation recommendations and quotations. Step 2 — Contact the sales team: Call the official Guoli Chemical sales hotline or submit an inquiry via the online quotation system on the official website, specifying the product name (Solubilizer S-15), CAS number (39464-69-2), required quantity, and receiving area. Step 3 — Obtain quotation and sample: The sales team will provide a formal quotation based on your needs. If you wish to test the product performance first, you can simultaneously request a free sample or small sample for laboratory verification. Step 4 — Sign contract, make payment, and arrange shipment: After both parties confirm the price, delivery time, and shipping method, sign a purchase and sale contract and arrange payment. The product will be dispatched from the Guoli Chemical warehouse according to the agreed time. Notes This product is not a hazardous chemical, with no special transportation restrictions; regular logistics can handle it. Recommended storage temperature is 5°C to 40°C, avoiding extreme heat and freezing conditions; keep containers tightly sealed. Actual packaging specifications may vary slightly with production batches; please refer to the physical label at the time of shipment. Before bulk purchase, it is recommended to request the technical data sheet (TDS) and safety data sheet (SDS) for review.

Question 4

Does Solubilizer S-15 meet environmental requirements? Can a test report be provided?

Accepted Answer

Solubilizer S-15 fully meets mainstream environmental requirements, and multiple authoritative testing indicators have all reached green chemical standards. Detailed Explanation Solubilizer S-15 (PEG-40 Hydrogenated Castor Oil) is a nonionic surctant derived from natural hydrogenated castor oil, and its environmental performance has been verified through internationally recognized OECD series standard tests. According to the data in the product safety data sheet of Guoli Chemical, this product performs excellently in multiple key environmental dimensions, conforming to the core concept of modern green chemicals, and can be safely used in fields such as agrochemical formulations, daily chemicals, industrial cleaning, and textile printing and dyeing. It should be particularly noted that Solubilizer S-15 has the dual environmental advantages of low aquatic toxicity and easy rapid biodegradability, meaning that even if it enters the water environment in trace amounts, it will not cause lasting harm to the aquatic ecosystem and can be quickly decomposed through the action of microorganisms in the natural environment. The full life cycle of this product, from raw material source to end-of-life degradation, reflects a green and environmentally friendly design philosophy. Key Environmental Compliance Indicators Below are the core test data on the environmental safety of Solubilizer S-15, all derived from the safety technical data in Guoli Chemical's product database: Environmental IndicatorTest Standard/MethodTest ResultJudgment Conclusion Fish Acute Toxicity (96h)OECD 203LC₅₀ > 100 mg/LLow toxicity, not classified as aquatic toxicity hazard Daphnia Acute Toxicity (48h)OECD 202EC₅₀ > 100 mg/LLow toxicity, safe for aquatic invertebrates Ready Biodegradability (28 days)OECD 301BDegradation rate > 60%Classified as readily biodegradable substance Bioaccumulation Potential (log Kow)—< 3No significant bioaccumulation potential, will not accumulate in the food chain GHS Hazard ClassificationGlobally Harmonized System of Classification and Labelling of ChemicalsNot classified as a hazardous substanceNo signal word, no hazard pictograms, no hazard statements Heavy Metal Content—≤ 10 mg/kgComplies with environmental requirements Arsenic Content—≤ 2 mg/kgComplies with environmental requirements Regarding the Test Report Solubilizer S-15 is accompanied by a complete technical specification sheet and Safety Data Sheet (SDS/MSDS), which contains all the above environmental and safety test data in detail. As a regular manucturer, Guoli Chemical implements a strict quality testing process for each batch of products and can provide batch Certificate of Analysis (COA) as well as the standard technical specification sheet for the product. If you need to obtain a stamped official test report, SDS document, or COA for a specific batch, it is recommended that you directly contact the sales or technical service team of Guoli Chemical. After providing your application scenario and requirements, the staff will match and provide the corresponding batch of formal quality assurance documents. For compliance statements or third-party certification reports under specific regulatory frameworks such as REACH and RoHS, please also consult and confirm with Guoli Chemical's technical department. Application Suggestions Based on the excellent environmental characteristics of Solubilizer S-15, it is especially recommended for use in the following scenarios with high environmental requirements: Green Pesticide Formulations: Meets the requirements of modern plant protection products for environmentally friendly adjuvants, and can reduce the overall ecological toxicity of formulations such as emulsifiable concentrates and microemulsions. Natural/Organic Concept Daily Chemicals: As a mild, biodegradable solubilizer for fragrances and essential oils, it aligns with the market trend of "clean beauty" and natural formulations. Environmentally Friendly Industrial Cleaners: Replaces traditional hard-to-degrade alkylphenol ethoxylate surctants, meeting increasingly stringent industrial wastewater discharge standards. Notes Although the 28-day biodegradation rate of the product exceeds 60% (classified as "readily biodegradable"), in case of large spills, it still needs to be contained and collected, and direct discharge into sewers or natural water bodies is prohibited. It should be properly disposed of in accordance with local environmental regulations. The environmental data for Solubilizer S-15 are based on laboratory conditions under OECD standards. The actual degradation rate in the environment may be affected by ctors such as temperature, microbial population, and oxygen content. The specific REACH registration status or chemical compliance documents for specific export destinations should be based on the latest documents provided by Guoli Chemical's business department.

Question 5

What are the advantages of Solubilizer S-15 compared to other similar products?

Accepted Answer

The core competitive advantage of Solubilizer S-15 lies in its three-in-one comprehensive performance of "efficient solubilization + mild safety + ultra-strong stability", which is particularly outstanding in terms of pH adaptability, environmental compliance, and formulation compatibility compared to similar products. Detailed Explanation Solubilizer S-15 (PEG-40 Hydrogenated Castor Oil, CAS No.: 39464-69-2) is derived from natural hydrogenated castor oil raw material, modified by ethylene oxide polymerization. Compared with the commonly available Tween series (such as Tween-20, Tween-80) or other traditional solubilizers on the market, its most significant differentiated advantage is reflected in raw material traceability and molecular structure: the molecular skeleton based on hydrogenated castor oil endows the product with natural origin attributes, while the design of 40 EO segments accurately positions its HLB value in the 14-16 range, which is in the "golden solubilization zone" of nonionic surctants. This ensures efficient solubilization of essential oils and fragrances while avoiding the increased foaming and viscosity control issues associated with excessively high EO numbers. From the perspective of chemical stability, the iodine value of Solubilizer S-15 is extremely low (≤2.0), and its unsaturation degree is r lower than that of ordinary oil-based surctants, meaning its antioxidant capacity and thermal stability are significantly superior to similar products. This is reflected in practical applications: it is not prone to rancidity or yellowing during long-term storage, its molecular structure remains stable and does not degrade under high-temperature environments, and it maintains solubilization efficiency without衰减 in a wide pH range and hard water conditions. In contrast, many traditional solubilizers are prone to "cloud point drift" or a sharp decrease in solubilization ability in acidic or electrolyte-containing systems. However, Solubilizer S-15, with its excellent acid, alkali, and hard water resistance, can operate stably and continuously in harsh formulations such as pesticide microemulsions and acidic cleaners. In terms of environmental protection and safety, the advantages of Solubilizer S-15 are clearly quantifiable: its 28-day biodegradation rate under OECD 301B standard is >60%, making it readily biodegradable; in terms of acute aquatic toxicity, the fish LC₅₀ and Daphnia magna EC₅₀ are both >100 mg\/L, indicating low aquatic toxicity; log Kow Technical Parameter Comparison The following is a comparison of key performance indicators between Solubilizer S-15 and generic performance of similar industry products (data for similar products are industry general reference ranges; data for Solubilizer S-15 are from the Guoli Chemical product database): Comparison Indicator Solubilizer S-15 (Guoli Chemical) Industry General Range for Similar Products Advantage Interpretation HLB Value 14-16 13-17 (similar hydrogenated castor oil series) Precisely in the efficient solubilization zone, balancing oil phase solubilization and water phase dispersion Active Content ≥99.0% 95%-99% Higher active content reduces the impact of ineffective fillers on the formulation Iodine Value ≤2.0 2-10 (ordinary oil-based products) Extremely low unsaturation, excellent antioxidant properties, long-term color stability Cloud Point (1% Aqueous Solution) 65-75°C 50-90°C (varies with EO number) Moderate cloud point ensures stable performance in both normal and high-temperature environments Critical Micelle Concentration (CMC) ~0.1-0.5 g\/L 0.1-1.0 g\/L Lower CMC means more economical dosage Biodegradation Rate (OECD 301B) >60% (28 days) Some traditional products Clearly meets the "readily biodegradable" standard Surce Tension (1%, 25°C) Approximately 35 mN\/m 30-40 mN\/m Excellent surce activity, helping to improve wetting and penetration performance Foaming Properties Low foam Medium to high foam (some similar products) Low foam property is especially suitable for industrial cleaning and agrochemical formulations, reducing the need for defoamers Skin Irritation (OECD 404) Non-irritating Some products have mild irritation More suitable for personal care applications, with outstanding safety Application Suggestions Based on the core advantages of Solubilizer S-15, the following application scenarios best reflect its differentiated competitiveness compared to similar products: High-end Transparent Personal Care Products: In products such as toners, serums, and transparent shampoos, its low foam, colorless and transparent appearance, and excellent fragrance solubilization ability ensure the product maintains a clear appearance without cloudiness over the long term, while its natural origin aligns with the "clean label" market trend. Pesticide Microemulsions and Emulsifiable Concentrates: It maintains the transparent stability of the microemulsion system even when diluted with hard water, outperforming many similar solubilizers that are sensitive to water quality; the low foam property also reduces foam interference during field spraying. Industrial Heavy Oil Cleaning Agents: It exhibits outstanding chemical stability when combined with alkaline additives, does not easily decompose or lose efficacy, and has high solubilization and stripping efficiency for hydrophobic soils such as mineral oil and lubricating oil, with low foam during the rinsing stage for easy cleaning. Formulations for Export or Regions with Strict Environmental Regulations: Its complete biodegradability and low ecotoxicity data provide strong compliance support for product registration. Precautions Although this product has good compatibility with various surctants, when compounding with high concentrations of electrolytes or strong acids and alkalis, it is recommended to conduct small-scale tests to verify cloud point and solubilization effect to ensure the long-term stability of the formulation. Recommended storage temperature is between 5°C and 40°C. Avoid prolonged storage below 0°C to prevent abnormal viscosity increase; decreased fluidity at low temperatures does not affect the intrinsic quality of the product, which can be restored upon warming. When used as a solubilizer, it is recommended to follow the process sequence of "pre-mixing the solubilizer with the oil phase, then slowly adding water" to achieve optimal transparent solubilization effect and system stability.

Question 6

How to store solubilizer S-15? What is the shelf life?

Accepted Answer

Solubilizer S-15 should be stored in a cool, dry place, sealed and protected from light, with a recommended temperature of 5~40°C; under compliant storage conditions, the shelf life of unopened product is usually 2 years. Detailed Description Solubilizer S-15 (PEG-40 hydrogenated castor oil) is a chemically stable nonionic surctant that exhibits good stability in acid, alkali, and electrolyte solutions. To ensure product quality does not deteriorate, storage should strictly follow the requirements of the product safety data sheet, especially regarding container sealing and temperature/humidity control. This product is slightly hygroscopic; prolonged exposure to humid air may cause turbidity or increased water content, affecting solubilizing performance. Regarding shelf life, there is no clear official shelf life data in the Guoli Chemical product database. According to industry practices and the characteristics of similar PEG-40 hydrogenated castor oil products, under cool, dry, well-ventilated conditions with sealed containers, the expected shelf life of unopened solubilizer S-15 is generally 2 years from the date of manucture. It is recommended to refer to the production date or expiry date label on the product packaging. Once opened, it should be used as soon as possible, and the container should be resealed immediately after each use. Technical Parameters Parameter ItemIndicator/Description Recommended Storage Temperature5°C ~ 40°C (avoid extreme heat and freezing) Storage EnvironmentCool, dry, well-ventilated warehouse Container RequirementsKeep sealed, use original or compatible containers Incompatible SubstancesKeep away from strong oxidizers, strong acids, strong bases AppearanceColorless to slightly yellow transparent liquid Water Content≤1.0% Flash Point (Closed Cup)≥100°C Chemical StabilityGood stability in acid, alkali, and electrolyte solutions, resistant to hard water HygroscopicitySlightly hygroscopic Application Recommendations Solubilizer S-15 is widely used in pesticide formulations, daily chemicals, industrial cleaning, and textile printing/dyeing. Before use, it is recommended to check whether the product appearance is still a colorless to slightly yellow transparent liquid. If there is obvious turbidity, layering, or odor, discontinue use. If the product becomes turbid or solidifies at low temperatures, this is a reversible physical change for nonionic surctants; it can usually be used after returning to room temperature and stirring evenly, without excessive heating. After opening, the product should be avoided from prolonged exposure to air. Tools used for extraction should be clean and dry to prevent introduction of moisture and impurities. It is recommended to use within 1 year to ensure optimal solubilizing and emulsifying effects. Precautions Although this product is not a hazardous chemical, the storage area should still be kept away from fire and heat sources, and equipped with general fire-fighting cilities. Avoid mixing with incompatible substances such as strong oxidizers, strong acids, and strong bases to prevent unexpected chemical reactions. Regularly check the integrity of storage containers to prevent leakage and damage; small spills may cause slippery floors and must be cleaned promptly. Products beyond the shelf life cannot be directly deemed ineffective, but small-scale tests should be conducted before use to verify whether their solubilizing and emulsifying properties still meet process requirements. For specific storage and shelf life requirements, please refer to the product outer packaging labels and the Product Technical Specification issued by Guoli Chemical.

Question 7

What safety precautions should be taken when using solubilizer S-15?

Accepted Answer

Solubilizer S-15 is a non-hazardous chemical with low safety risks under normal use, but good industrial hygiene practices should still be followed, with emphasis on eye protection, spill cleanup, and proper storage. Detailed Description Solubilizer S-15 (PEG-40 Hydrogenated Castor Oil) is not classified as a hazardous substance or mixture according to the Globally Harmonized System of Classification and Labelling of Chemicals (GHS), with no signal word, no hazard pictograms, and no hazard statements. The oral LD₅₀ in rats is > 2000 mg/kg, not belonging to acute toxicity categories; OECD 404 test confirms no skin irritation, and OECD 406 guinea pig maximization test result is negative, with no skin sensitization. Overall, the health risk of this product under normal use conditions is extremely low. Despite its high safety profile, it is still recommended to wear chemical safety goggles and appropriate protective gloves during handling to avoid eye contact. In case of accidental eye contact, it may cause mild temporary eye irritation; immediately rinse with plenty of water for at least 15 minutes. After handling, wash hands thoroughly. Eating, drinking, and smoking are prohibited in the work area. The flash point of this product is > 100°C (closed cup), posing no risk of flammability or explosion under normal conditions, but general fire prevention measures should still be taken in high-temperature environments. Environmentally, solubilizer S-15 has low aquatic toxicity (fish 96h LC₅₀ > 100 mg/L, daphnia 48h EC₅₀ > 100 mg/L), with a degradation rate > 60% in 28 days according to OECD 301B, indicating ready biodegradability, and low bioaccumulation potential (log Kow < 3). It is relatively environmentally friendly. In case of spill, use inert absorbent materials (such as sand or diatomaceous earth) to contain and collect the spill, preventing it from entering drains or water bodies. Summary of Safety Operation Points Safety CategorySpecific Requirements Personal ProtectionRecommended to wear chemical safety goggles and protective gloves; wash hands thoroughly after operation Ventilation RequirementsProvide adequate general or local exhaust ventilation in the operation area Storage TemperatureRecommended 5°C to 40°C, avoid extreme temperatures and freezing Storage EnvironmentCool, dry, well-ventilated warehouse, keep container tightly closed Incompatible MaterialsKeep away from strong oxidizers, strong acids, and strong bases Spill HandlingContain with inert absorbent material and collect into a closed container, rinse residues Firefighting MeasuresUse water spray, dry powder, carbon dioxide, or alcohol-resistant foam for extinguishing Emergency Treatment Recommendations Skin Contact: Immediately remove contaminated clothing and wash the affected area with plenty of soap and water. Seek medical advice if discomfort occurs. Eye Contact: Immediately rinse with plenty of water for at least 15 minutes. If wearing contact lenses, remove them and continue rinsing. If eye irritation persists, seek medical attention. Inhalation: Move the person to fresh air and keep breathing comfortable. Seek medical advice if discomfort occurs. Ingestion: Rinse mouth. Do not induce vomiting in an unconscious person. Seek immediate medical assistance and show the safety data sheet. Precautions During operation, prevent container damage that may cause leakage. Small spills may create slippery surces and should be cleaned up promptly. Regularly inspect storage containers for leaks, corrosion, or damage. Use original or compatible containers for repackaging. For detailed physical and chemical parameters and material safety data, please refer to the product technical specifications and Safety Data Sheet (SDS).

Question 8

How to use solubilizer S-15? What is the recommended addition amount?

Accepted Answer

The recommended addition amount of solubilizer S-15 is typically 3 to 10 times the weight of the substance to be solubilized (fragrance/essential oil/oily active ingredient), or 1% to 20% in the final formulation. The specific dosage should be determined through experiments based on the nature of the substance to be solubilized and the formulation system. Detailed Explanation Guoli Chemical Solubilizer S-15 (PEG-40 Hydrogenated Castor Oil) is a highly effective non-ionic surctant with an HLB value of 14~16, a cloud point of 65~75°C (1% aqueous solution), and is easily soluble in water. Its core function is to uniformly and stably disperse oil-soluble substances (such as fragrances, essential oils, and t-soluble active ingredients) into aqueous systems, forming clear and transparent solutions. The key principle during use is: The amount of solubilizer usually needs to reach 3 to 10 times the weight of the solubilized substance to achieve the ideal transparent solubilization effect. Taking typical application scenarios as examples: For solubilizing 0.2% fragrance in transparent shampoo or toner, it is recommended to add 0.6%~2.0% of solubilizer S-15 (i.e., a ratio of 3 to 10 times); for solubilizing 5% active ingredient in pesticide microemulsion, the recommended dosage of S-15 is 5%~20%. In practice, the stepwise addition method is recommended: first, premix solubilizer S-15 with the substance to be solubilized (fragrance, essential oil, or oily active ingredient) at the estimated ratio and stir evenly, then slowly add to the aqueous phase while stirring continuously until the system becomes clear and transparent. If turbidity appears, it indicates insufficient solubilizer dosage, and additional amounts should be added until the solution is completely transparent. Technical Parameters Parameter ItemTechnical IndexData Source HLB Value14~16Guoli Chemical Product Database Cloud Point (1% Aqueous Solution)65~75 °CGuoli Chemical Product Database Critical Micelle Concentration (CMC)~0.1~0.5 g/LGuoli Chemical Product Database Active Content≥99.0%Guoli Chemical Product Database 1% Aqueous Solution pH5.0~7.0Guoli Chemical Product Database AppearanceColorless to slightly yellow transparent liquidGuoli Chemical Product Database Foam CharacteristicsLow foamingGuoli Chemical Product Database Chemical StabilityAcid resistant, alkali resistant, hard water resistantGuoli Chemical Product Database Application Recommendations Daily Chemicals (Transparent Shampoo, Shower Gel, Toner, etc.): When solubilizing fragrances or essential oils, it is recommended to use a ratio of 3:1~10:1 (solubilizer:substance to be solubilized). For example, if the final formulation contains 0.3% fragrance, the recommended dosage of S-15 is 0.9%~3.0%. Premix the solubilizer and fragrance evenly first, then add to the aqueous phase and stir until transparent. Pesticide Formulations (Emulsifiable Concentrate, Emulsion in Water, Microemulsion): As a solubilizer and emulsifier, the recommended addition amount in the concentrate is 5%~20%, depending on the type and content of the active ingredient. It can be used in combination with non-ionic and anionic surctants to optimize the transparency and dilution stability of the microemulsion system. Guoli Chemical Database explicitly states that this product has excellent stability in acid, alkali, and hard water environments, making it particularly suitable for agrochemical formulations. Industrial Hard Surce Cleaners: Recommended addition amount is 1%~5% for solubilizing and emulsifying hydrophobic organic soil and mineral oil. Its low-foaming property makes it suitable for use with mechanical cleaning equipment, preventing cleaning efficiency from being affected by excessive foam. Textile Dyeing and Printing Auxiliaries: As a component of leveling agents and dispersing aids, the recommended addition amount is 0.5%~3% for solubilizing disperse dyes and functional finishing agents, promoting uniform dye adsorption and preventing color spots. Key Operation Points Addition Sequence: It is recommended to premix solubilizer S-15 with the substance to be solubilized before diluting into the aqueous phase; this method usually yields better results than adding both directly to the aqueous phase separately. Stirring Requirements: Maintain proper agitation during premixing and dilution to cilitate the rapid formation of a uniform and transparent system. Temperature Effect: The cloud point of this product is 65~75°C (Guoli Chemical Database data). During use and storage, avoid approaching the cloud point temperature to prevent the solubilized system from becoming turbid due to high temperature. Compatibility Recommendations: This product is a non-ionic surctant and is compatible with anionic, cationic, and other non-ionic surctants, allowing flexible formulation adjustments to meet different needs. Dosage Optimization: Since the chemical composition of solubilized substances varies greatly (e.g., different polarities of fragrances or essential oils), the final dosage should be precisely optimized through gradient experiments to achieve stable and transparent solubilization with the minimum amount. Precautions This product is slightly hygroscopic (Guoli Chemical Database data). After opening, seal tightly and store promptly. Recommended storage temperature is 5°C~40°C, avoiding extreme temperatures and freezing. The product is low-foaming and not suitable for applications requiring rich foam. When using large quantities, it is recommended to wear chemical safety glasses and protective gloves to avoid contact with eyes. If accidental eye contact occurs, flush immediately with plenty of water for at least 15 minutes. The above recommended dosages are general industry reference values. The optimal dosage in a specific formulation should be based on actual experimental results. Guoli Chemical Database does not provide precise addition amount data for this product in various application scenarios.

Question 9

What are the main industries and processes where solubilizer S-15 is primarily applied?

Accepted Answer

Solubilizer S-15 is widely used in four major industries: pesticide formulations, daily chemical products, industrial cleaning, and textile printing and dyeing, with the core process roles of efficient solubilizer and emulsifier. Detailed Description Solubilizer S-15 (PEG-40 Hydrogenated Castor Oil) is a nonionic surctant derived from natural hydrogenated castor oil. With its excellent solubilizing and emulsifying capabilities, it plays a key process role in multiple industries by uniformly dispersing oil-soluble or poorly soluble substances in aqueous systems. Its unique molecular structure enables stable chemical performance across a wide pH range and temperature conditions, making it an important functional additive for formulating transparent water-based products and highly stable emulsions. In the agrochemical industry, S-15 is mainly used in the preparation of emulsifiable concentrates (EC), oil-in-water emulsions (EW), and microemulsions (ME). It can efficiently solubilize pesticide active ingredients and promote the formation of stable and transparent microemulsion systems, significantly enhancing the dispersion and dilution stability of formulations in hard water. In the personal care and daily chemical field, this product is an indispensable solubilizer for fragrances and essential oils in transparent water-based products such as shampoos, body washes, and toners, ensuring a clear and transparent appearance and preventing turbidity and layering caused by oil-water separation. Furthermore, in industrial hard surce cleaning and textile printing and dyeing processes, S-15 plays a dual role of solubilizing and emulsifying oil stains and dispersing dyes for level dyeing, effectively improving cleaning efficiency and dyeing quality. The product also features low aquatic toxicity, easy biodegradability, and skin non-irritancy, meeting the standards of modern green chemicals. Industry Applications and Process Details Industry Sector Application Process / Product Type Process Function Pesticide Formulations Emulsifiable Concentrates (EC), Oil-in-Water Emulsions (EW), Microemulsions (ME) Solubilize pesticide active ingredients, promote stable and transparent microemulsion system formation, enhance dispersion and dilution stability in hard water, and improve efficacy Personal Care and Daily Chemicals Transparent Shampoos, Body Washes, Toners, Water-based Cosmetics Solubilize fragrances, natural essential oils, and lipid-soluble skin care actives, maintain clear and transparent product appearance, prevent turbidity and layering Industrial Cleaning Hard Surce Cleaners, Vehicle and Machinery Cleaners Solubilize and emulsify heavy oil stains, mineral oils, and hydrophobic soils, improve penetration, lift-off, and anti-redeposition performance Textile Printing and Dyeing Leveling Agents, Dispersing Aids, Pretreatment Aids Solubilize and disperse dyes and functional finishing agents, promote uniform dye adsorption, prevent color spots, and improve color stness Application Recommendations In formulation design, solubilizer S-15 can be flexibly compounded with anionic, cationic, and other nonionic surctants. It is recommended to optimize the dosage based on the HLB value requirements of the target system and the properties of the solubilizate. For fragrance and essential oil solubilization systems, a common process is to premix S-15 with the solubilizate in a certain ratio before slowly adding it to the water phase, to achieve optimal transparency and stability. In pesticide microemulsion formulations, it is advisable to adjust the dosage considering ctors such as water hardness and storage temperature to ensure consistent quality during long-term storage. Precautions Ensure good ventilation in the operating area and avoid prolonged eye contact Recommended storage temperature range is 5°C to 40°C; avoid extreme temperatures and freezing Store away from incompatible substances such as strong oxidizers, strong acids, and strong bases In case of accidental eye contact, rinse immediately with plenty of water for at least 15 minutes and seek medical attention if necessary

Question 10

What are the physicochemical technical parameters of Solubilizer S-15?

Accepted Answer

Solubilizer S-15 (PEG-40 Hydrogenated Castor Oil) physicochemical technical parameters cover multiple dimensions including basic physical properties, surce activity, stability, safety, and environmental protection. It is a well-balanced nonionic solubilizer. Detailed Description Solubilizer S-15, chemically known as PEG-40 Hydrogenated Castor Oil (CAS No.: 39464-69-2), is a nonionic surctant synthesized by the polymerization of hydrogenated castor oil and ethylene oxide. It appears as a colorless to slightly yellow transparent liquid with a molecular weight of approximately 2600. The HLB value of this product ranges from 14 to 16, making it a hydrophilic surctant. It is highly soluble in water and exhibits excellent chemical stability under a wide pH range, as well as in coexistence with acids, bases, and electrolyte solutions. Its core performance parameters demonstrate good surce activity and solubilization capacity: the surce tension of a 1% aqueous solution (25°C) is approximately 35 mN/m, the critical micelle concentration (CMC) is between 0.1 and 0.5 g/L, and the cloud point is 65~75°C. The product has an active content ≥99.0%, moisture ≤1.0%, free alcohol ≤1.0%, and iodine value ≤2.0 (indicating extremely low unsaturation). These indicators collectively ensure high purity and batch-to-batch stability of the product. From the perspective of safety and environmental parameters, the flash point is ≥100°C (closed cup method), posing no flammable risk under normal conditions. It is non-irritating to the skin, non-sensitizing, and has extremely low ecotoxicity (fish LC₅₀ and Daphnia EC₅₀ both >100 mg/L). The 28-day biodegradation rate is >60%, classifying it as readily biodegradable. The density is approximately 1.06 g/cm³ (25°C), the freezing point is below -10°C, and it remains in a stable liquid state during storage at temperatures between 5°C and 40°C. Technical Parameters Parameter ItemValue/DescriptionTest Condition Product NamePEG-40 Hydrogenated Castor Oil— CAS No.39464-69-2— AppearanceColorless to slightly yellow transparent liquidVisual Ionic TypeNonionic— Molecular WeightApprox. 2600— HLB Value14~16— Active Content≥99.0 %— Moisture≤1.0 %— pH (1% Aqueous Solution)5.0~7.025°C pH (5% Aqueous Solution)5.5~7.525°C DensityApprox. 1.06 g/cm³25°C Cloud Point65~75 °C1% Aqueous Solution Surce TensionApprox. 35 mN/m1% Aqueous Solution, 25°C Critical Micelle Concentration (CMC)~0.1~0.5 g/L25°C Kinematic ViscosityApprox. 550~650 mm²/s20°C Low Shear ViscosityApprox. 700~900 mPa·s25°C Refractive IndexApprox. 1.46620°C Acid Value≤1.0 mg KOH/g— Saponification Value≤2.0 mg KOH/g— Hydroxyl Value60~80 mg KOH/g— Iodine Value≤2.0 gI₂/100g— Free Alcohol≤1.0 %— Freezing Point— Flash Point≥100 °C (Closed Cup Method)— Foaming BehaviorLow Foaming— Heavy Metal Content≤10 mg/kg— Arsenic Content≤2 mg/kg— Chemical StabilityStable in acid, alkali, and electrolyte solutions; hard water resistant— HygroscopicitySlightly hygroscopic— Packaging Specifications50kg plastic drum / 200kg plastic drum / IBC tote— Application Recommendations Solubilizer S-15, with a high HLB value (14~16) and low surce tension (approx. 35 mN/m), is particularly suitable for solubilizing fragrances, essential oils, and lipophilic active ingredients in aqueous systems. In pesticide microemulsion and emulsion formulations, the recommended dosage is typically 1 to 5 times the amount of active ingredient (adjusted according to the type and ratio of the oil phase). The solubilizer S-15 can be thoroughly mixed with the oil phase first, then water is added slowly to obtain a clear and transparent microemulsion or a stable and uniform emulsion. In daily chemicals (transparent shampoos, body washes, toners, etc.), the recommended dosage is 3 to 8 times the weight of the fragrance or essential oil. The fragrance and solubilizer S-15 can be pre-mixed evenly before adding to the aqueous formulation to ensure the final product remains clear

Solubilizer S-15

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Property	Value
CAS No.	39464-69-2
Molecular Formula	No fixed formula; polymer of hydrogenated castor oil and ethylene oxide
Appearance	Colorless to pale yellow liquid
Ionic Type	Nonionic
Avg. Molecular Weight	Approx. 2600
Cloud Point	65-75 (1%aq. soln.)
Active Content	≥99.0
pH Value(1%)	5.0~7.0
pH Value(5%)	5.5-7.5
Iodine Value	≤2.0
Solubility	Readily soluble in water; miscible with oils and ethanol
Surface Tension	~ 35 (1%aq. soln., 25°C)
CMC	~0.1~0.5 g/L
Acid Value	≤1.0
Saponification Value	≤2.0
Hydroxyl Value	60~80
Moisture	≤1.0
Density	~ 1.06 (25°C)
Kinematic Viscosity	~ 550-650 (20°C)
Refractive Index	~ 1.466 (20°C)
Flash Point	≥100 (closed cup)
Hygroscopicity	Slightly hygroscopic
Chemical Stability	Good stability in acid, alkali and electrolyte solutions; hard water resistant
Foam Property	Low foam
Alkali Resistance	Alkali resistant
Unsaturation	Extremely low
Melting Point	<-10°C (liquid)
Low Shear Viscosity	~ 700-900 (25℃, mPa·s)
Solid Content	≥99.0
Free Alcohol	≤1.0
Heavy Metal	≤10 mg/kg
Arsenic	≤2 mg/kg