Question 1

Is emulsifier S-185/O-5 harmful to humans? Does it have an impact on the environment?

Accepted Answer

Emulsifier S-185/O-5 poses certain hazards to humans (skin/eye irritation, harmful by inhalation and swallowing), and is toxic to aquatic life with long-lasting effects. It is an industrial chemical that requires strict control. Detailed Description Emulsifier S-185/O-5 (tty alcohol polyoxyethylene ether) is a non-ionic surctant for industrial use, not a consumer product. According to its Safety Data Sheet, this product presents clear risks in terms of human health and ecological environment. Operations and use must strictly follow safety regulations, and it must not be discharged or contacted arbitrarily. From a human health perspective, this product is classified as skin irritant (Category 2), serious eye irritant (Category 2), respiratory tract irritant (Category 3), and harmful if swallowed (Category 4). This means direct skin contact may cause irritation, contact with eyes can cause serious eye irritation, inhalation of its vapor or mist may lead to respiratory discomfort, and accidental ingestion is harmful to health. It should be emphasized that this product is not highly toxic or carcinogenic, but in industrial operation scenarios, protective gloves, goggles, and protective clothing must be worn, and it should be used in well-ventilated areas. From an environmental perspective, this product is classified as hazardous to the aquatic environment (Category 2). It is toxic to aquatic life and may have long-lasting adverse effects in the environment. Therefore, it is strictly forbidden to directly discharge waste liquids containing this product into surce water, groundwater, or soil. Any leaks during production or use should be collected using inert absorbent materials and disposed of by qualified waste treatment agencies in accordance with local regulations. Summary of Health and Environmental Impacts Risk CategorySpecific HazardClassification Level Skin ContactCauses skin irritation, may cause redness and itchingSkin corrosion/irritation — Category 2 Eye ContactCauses serious eye irritation, requires immediate rinsing with plenty of water for at least 15 minutesSerious eye damage/eye irritation — Category 2 InhalationVapor or mist may cause respiratory tract irritationSpecific target organ toxicity (single exposure) — Category 3 Ingestion/SwallowingHarmful if swallowed, do not induce vomiting, seek medical attention immediatelyAcute toxicity (oral) — Category 4 Aquatic EnvironmentToxic to aquatic life with long-lasting effectsHazardous to the aquatic environment — Category 2 Fire HazardNot flammable (flash point >150℃), but combustion may produce toxic fumes— Application Recommendations Given the above risk characteristics, emulsifier S-185/O-5 should be strictly limited to industrial use, suitable for professional fields such as pesticide formulations, industrial hard surce cleaners, metalworking fluids, textile printing and dyeing auxiliaries, leather degreasing and tliquoring agents, and paint and ink emulsification and dispersion. In these application scenarios, the ingredient is usually compounded with other components at lower concentrations and used under closed or controlled process conditions, resulting in limited actual exposure risk to humans. Precautions Personal Protection: During operations, protective gloves, goggles, ce shields, and protective clothing must be worn to avoid any form of direct contact. Ventilation Requirements: Use only in well-ventilated areas, avoid inhaling vapor or mist. Environmental Protection: It is strictly forbidden to discharge waste liquids containing this product into water bodies or soil. Spills should be absorbed with inert materials such as sand, vermiculite, and disposed of by professional agencies. Storage Conditions: Keep containers tightly closed and store in a cool, dry, well-ventilated warehouse, with temperature recommended at 5～40℃, away from strong oxidizers and heat sources. First Aid Measures: In case of skin contact, wash immediately with plenty of running water and soap; for eye contact, rinse with plenty of running water for at least 15 minutes and seek medical attention; if swallowed, do not induce vomiting, seek medical attention immediately.

Question 2

What to do if problems occur during the use of emulsifier S-185/O-5? How to obtain technical support?

Accepted Answer

If problems occur during the use of emulsifier S-185/O-5, professional support can be obtained through systematic troubleshooting, reviewing product documentation, and contacting the Guoli Chemical technical team. Common usage problems and troubleshooting methods During the use of emulsifier S-185/O-5 (tty alcohol polyoxyethylene ether, nonionic surctant), common problems usually focus on poor emulsification effect, system stratification, compatibility abnormalities, and operational safety. It is recommended to perform systematic troubleshooting according to the following steps: Problem 1: Emulsion is unstable or layered. First, check whether the dosage of this product is within the recommended range of the formulation; second, confirm the water quality conditions—although S-185/O-5 has good hard water resistance, the dosage may still need to be adjusted or deionized water used under extreme water quality conditions. Also check whether the addition order of oil and water phases, stirring speed, and temperature conditions are appropriate; it is usually recommended to perform emulsification at 40～60°C. Problem 2: Turbidity or precipitation occurs when compounded with other surctants. S-185/O-5 is a nonionic tty alcohol polyoxyethylene ether with good compatibility with anionic, cationic, and other nonionic surctants. If abnormalities occur, check whether the ionic type of the compounding components and pH value are within reasonable ranges (this product is acid- and alkali-resistant), and whether the addition order is appropriate. It is recommended to first conduct small-scale tests in the laboratory to confirm compatibility before scale-up production. Problem 3: Skin or eye contact with the product causes irritation. Immediately handle according to the first aid measures in the safety instructions: for skin contact, wash with plenty of running water and soap; for eye contact, rinse with plenty of running water for at least 15 minutes; if irritation persists, seek medical attention immediately. Problem 4: The product changes in state after storage. The appearance of this product is a white to light yellow paste. The storage temperature should be kept between 5～40°C, away from direct sunlight. Low temperatures may cause the product to thicken or solidify, which is normal. Before use, place it at room temperature to naturally warm up and stir evenly; this does not affect product performance. How to obtain technical support If the problems encountered during use cannot be resolved through the above troubleshooting, Hai'an County Guoli Chemical Co., Ltd. provides professional technical support services. It is recommended to obtain assistance through the following channels: Provide a detailed problem description: Before contacting technical support, it is recommended to prepare the following information: product batch number, purchase date, storage conditions, formulation system overview (including types and dosages of compounding components), specific abnormal phenomena observed, and process operating conditions. This will help the technical team quickly locate the problem. Request product technical documentation: You can request the detailed technical data sheet (TDS) and material safety data sheet (MSDS/SDS) for this product from Guoli Chemical, which contain more detailed physicochemical parameters, application guidance, and safety information. Apply for application experiment support: For complex formulation development or process optimization issues, Guoli Chemical can provide sample testing and application experiment support to help you adjust formulation and process parameters. On-site technical service: For major technical difficulties, arrangements can be made to send technical personnel for on-site diagnosis and guidance. Precautions This product is toxic to aquatic organisms and may cause long-term adverse effects (aquatic environment hazard category 2). In case of leakage during use, immediately adsorb and collect with inert materials such as sand, vermiculite, and dispose of through qualified waste treatment agencies in accordance with local regulations. Do not discharge into water bodies or soil. Although the product is not flammable (flash point >150°C), it should be kept away from strong oxidizers and high-temperature heat sources during operation, and the work area should be well ventilated.

Question 3

How to purchase emulsifier S-185/O-5? What is the minimum order quantity?

Accepted Answer

You can directly purchase the emulsifier S-185/O-5 by contacting the sales team of Haian Guoli Chemical Co., Ltd. There is no publicly available standard data for the minimum order quantity of this product; it is recommended to confirm through official business negotiations. Detailed Description Emulsifier S-185/O-5 (CAS: 68439-49-6) is one of the core nonionic surctant products of Guoli Chemical, with the chemical name tty alcohol polyoxyethylene ether (stearyl alcohol polyoxyethylene ether), appearing as a white to light yellow paste. This product is not sold through online retail channels. All purchases require direct contact with the sales department of Guoli Chemical to obtain official quotations, confirm supply cycles, and sign purchase and sales contracts. According to database information, the product price adopts a "RMB/ton" quotation mechanism, and the price is dynamically adjusted based on raw material market conditions, purchase volume, and cooperation methods. The reference price in the database is for reference only; the actual transaction price should be obtained by contacting the sales team for the latest quotation. It is recommended that you provide the following information when inquiring for a quick response: estimated annual usage, target application fields, packaging preferences, and delivery location. Regarding the Minimum Order Quantity (MOQ), there is no such parameter in the Guoli Chemical product database. In the chemical raw materials industry, the standard single drum (minimum packaging specification) is usually used as the basis for minimum order. The conventional packaging for this product is 50kg plastic drums, 200kg plastic drums, and IBC totes. The specific minimum order quantity needs to be negotiated based on inventory status, whether it is a customized specification, and the business terms of both parties. Recommended Procurement Process Step 1: Confirm Requirements — Clearly specify the required product specifications (active content ≥99%, hydroxyl value 30±5 mgKOH/g, etc.), packaging form, and estimated purchase quantity. Step 2: Contact Sales — Contact the sales department via the official website of Guoli Chemical, corporate email, or phone, and submit the inquiry requirements. Step 3: Obtain Quotation — The sales team will provide a formal quotation based on your requirements (including unit price, minimum order quantity, delivery time, payment terms, etc.). Step 4: Sample Testing — New customers can usually apply for free samples for formulation verification, and sign a formal contract after confirming product suitability. Step 5: Contract Signing and Shipment — After both parties confirm the terms, arrange production/shipment. Freight and logistics methods shall be executed according to the contract. Product Specification Reference Parameter ItemIndicator/Description Product NameEmulsifier S-185/O-5 CAS No.68439-49-6 AppearanceWhite to light yellow paste Active Content≥99% Ionic TypeNonionic surctant HLB Value16-17 Hydroxyl Value30±5 mgKOH/g pH Value (1% Aqueous Solution)5.0-7.0 Moisture Content≤1.0% Cloud Point＞100°C Packaging Specifications50kg plastic drum / 200kg plastic drum / IBC tote Minimum Order QuantityNo such parameter available (please consult the sales team) PriceReference price; please consult the sales team for the latest quotation Application Recommendations Before confirming the purchase, it is recommended that you first evaluate the technical suitability of the product based on the actual application scenario. With its HLB value of 16-17, hydrophilic characteristics, and excellent resistance to acid, alkali, and hard water, emulsifier S-185/O-5 is particularly suitable for the following fields: Agrochemical Formulations: Preparation of emulsifiable concentrates, oil-in-water emulsions, and microemulsions, providing excellent emulsification and dispersion stability. Industrial Hard Surce Cleaners: Efficient emulsification and removal of mineral oil, animal and vegetable oil stains. Metalworking Fluids: Building a stable oil-in-water emulsification system to improve lubrication and cooling performance. Textile Printing and Dyeing Auxiliaries: Emulsifying and dispersing components in scouring and leveling processes. Precautions This product is an industrial chemical, not a retail product, and is not directly sold to individual consumers. When handling, wear protective gloves, goggles, and protective clothing. Use in a well-ventilated area. Avoid skin and eye contact (skin corrosion/irritation Category 2, serious eye damage/eye irritation Category 2). Storage temperature is recommended to be kept between 5 and 40°C, avoiding direct sunlight. After opening, reseal and store properly. The product is toxic to aquatic organisms (aquatic environment hazard Category 2). Do not discharge waste liquid into water bodies after use; dispose of it in accordance with local regulations. All business terms (including price, minimum order quantity, delivery time, payment terms) are subject to the formal contract signed by both parties. The database information is for reference only.

Question 4

Does emulsifier S-185/O-5 meet environmental protection requirements? Can a test report be provided?

Accepted Answer

Emulsifier S-185/O-5 is classified as a substance hazardous to the aquatic environment (Aquatic Hazard Category 2) and is not a "green" or environmentally friendly product. Strict control of emissions and leakage is required. Regarding the product test report, the database currently does not provide it directly. It is recommended to contact the sales or technical department of Guoli Chemical to obtain the batch-specific quality inspection report (COA) and related environmental protection test documents. Detailed Explanation According to the safety data from the Guoli Chemical product database, the core environmental assessment basis for emulsifier S-185/O-5 (CAS: 68439-49-6) is its aquatic environmental hazard classification as Category 2, i.e., "toxic to aquatic organisms with long-lasting effects." This means that if the product is directly discharged into water bodies, it will be toxic to fish, algae, and other aquatic organisms, posing a persistent environmental risk. Therefore, strictly speaking, this product is not a green or easily biodegradable surctant, and strict environmental protection regulations must be followed during use and waste disposal. However, as a tty alcohol polyoxyethylene ether nonionic surctant, the tty alcohol chain and polyoxyethylene ether chain in its chemical structure have a certain degree of degradability in the natural environment (specific degradation rate subject to third-party test data). Additionally, this product does not contain phosphorus (free phosphoric acid, monoester phosphate, diester phosphate are all "none"), thus not causing water eutrophication issues; heavy metal content is controlled at ≤10 mg/kg, arsenic content ≤2 mg/kg, meeting the heavy metal limit standards for general industrial chemicals. These indicators, to some extent, reduce its cumulative environmental harm. In practical applications, as long as the regulations regarding spill handling and waste disposal in the product safety instructions are strictly followed — "prevent leakage from entering drainage systems, surce water, or groundwater" and "collect the adsorbed material in sealed containers and dispose of it in accordance with local regulations by qualified waste disposal agencies" — the environmental risk can be effectively controlled, achieving compliant use. Regarding Test Reports Currently, the Guoli Chemical product database does not contain specific test report files for emulsifier S-185/O-5. Generally, Guoli Chemical provides batch quality inspection reports (COA) for each batch of product, covering actual measured data of conventional technical indicators such as active matter content, pH value, moisture, hydroxyl value, and acid value. For the following professional test reports, it is recommended to directly contact the technical department or sales manager of Guoli Chemical: Batch Quality Inspection Report (COA) Material Safety Data Sheet (MSDS/SDS) REACH Compliance Statement or RoHS Test Report Biodegradability Test Report (e.g., OECD 301 series) Aquatic Toxicity Test Report (e.g., Fish Acute Toxicity LC50, Algal Growth Inhibition EC50, etc.) Heavy Metals and Hazardous Substances Limit Test Report Technical Parameters (Summary of Environmental Indicators) Test ItemValue/ConclusionEnvironmental Relevance Description Aquatic Environmental Hazard ClassificationCategory 2Toxic to aquatic organisms, with long-lasting effects Total Heavy Metals≤10 mg/kgComplies with general industrial chemical limits Arsenic (As) Content≤2 mg/kgLow arsenic residue Free Phosphoric AcidNoneWill not cause phosphorus pollution Monoester/ Diester PhosphateNoneDoes not contain organic phosphorus components Free Alcohol Content≤1.0%Reaction complete, low residual monomer Moisture Content≤1.0%High purity, reducing impurity introduction Application Recommendations In application scenarios involving environmental compliance (e.g., pesticide formulations exported to the EU, environmentally friendly cleaning agent formulations, etc.), it is recommended: Confirm the environmental protection regulations of the target market in advance (e.g., EU REACH regulations, EPA standards, etc.) Request compliance statements for the corresponding batch from Guoli Chemical Assess the final biodegradation pathway and environmental te of the product during the formulation design phase Ensure downstream users are aware of the aquatic toxicity classification of this product and are equipped with necessary wastewater treatment cilities Precautions Strictly prohibit the direct discharge of wastewater or waste liquid containing this product into natural water bodies, sewers, or soil Production and usage sites should be equipped with spill emergency collection cilities to prevent accidental release Waste disposal must be carried out by qualified hazardous waste treatment agencies, complying with local environmental regulations If third-party environmental certifications or test reports for specific products are required, please contact the technical support team of Hai'an County Guoli Chemical Co., Ltd. directly

Question 5

What advantages does emulsifier S-185/O-5 have compared to other similar products?

Accepted Answer

Compared to conventional tty alcohol polyoxyethylene ether (AEO) products, emulsifier S-185/O-5, with its unique hydrophobic long-chain and high EO addition number structure, stands out in terms of strong emulsifying power, extreme system compatibility, and high active matter content, making it particularly suitable for demanding industrial applications in complex formulations. Detailed Description The core advantage of emulsifier S-185/O-5 (polyoxyethylene(35) stearyl ether) stems from the precise design of its molecular structure. Compared to common AEO series with short C12-14 carbon chains and low EO numbers (e.g., EO=7, 9, 12), S-185/O-5 uses a C16-18 tty alcohol chain, offering stronger affinity for hydrophobic substrates such as mineral oils, animal and vegetable oils, and waxes. At the same time, its hydrophilic segment with up to 35 EO units imparts excellent water solubility and emulsification dispersion efficiency, enabling the effective construction and long-term stabilization of O/W (oil-in-water) emulsions, significantly delaying oil separation and sedimentation in high-end formulations such as pesticide emulsifiable concentrates and microemulsions. In terms of chemical tolerance, this product exhibits extremely broad compatibility. Ordinary nonionic surctants often lose effectiveness in high-concentration salt, acid, or alkali environments due to a decrease in cloud point, but S-185/O-5, with its long EO chain providing a large steric stabilization effect, maintains excellent wetting and penetration properties in harsh industrial hard surce cleaners and alkali-resistant textile scouring agents. Moreover, its paste form with "high active matter content and low moisture" allows it to not only improve formulation efficiency during compounding but also reduce interference from ineffective diluents on the final product. It is worth noting that, unlike some alternatives to alkylphenol polyoxyethylene ether (APEO) that place greater pressure on aquatic environments, S-185/O-5, as a stearyl alcohol polyether nonionic surctant, meets the stringent requirements of current green industrial formulations for raw material biocompatibility while satisfying high emulsification performance, making it an ideal upgrade choice for fields such as paint polymerization and metal-plastic degreasing. Application Recommendations Based on its high-performance advantages, Guoli Chemical recommends prioritizing the use of emulsifier S-185/O-5 in the following challenging scenarios: Pesticide Microemulsions/Emulsions in Water: Leverage its super emulsification and solubilization capabilities to ensure system stability of high-melting-point active ingredients at low temperatures. Heavy-Duty Industrial Cleaning: Act as the core emulsifying component in formulations with high alkali or chelating agent content to strip stubborn mineral oil deposits. High-Temperature Dyeing and Finishing: Used in high-temperature leveling agents or scouring agents, its electrolyte resistance and low tendency to "precipitate" prevent bric defects such as "oil spots" or "color streaks." Leather tliquoring and Degreasing: Utilize its efficient emulsification and penetration properties for natural oils and ts to enhance leather softness and fullness. Precautions Although the product exhibits excellent acid and alkali resistance, safety protection is still required during operation. This product is classified as a Category 2 skin irritant and is a solid paste; appropriate heating is needed before operation to cilitate pumping and dispersion. High-concentration contact may cause skin detting or cracking; please wear chemical-resistant gloves and goggles during work. Storage temperature is recommended to be controlled between 5-40°C. After opening, please seal tightly as soon as possible to prevent moisture absorption that may affect the active matter content.

Question 6

How to store emulsifier S-185/O-5? How long is its shelf life?

Accepted Answer

Emulsifier S-185/O-5 should be stored sealed in a cool, dry, and well-ventilated place at a temperature of 5～40°C. The specific shelf life is not clearly indicated in the database; it is recommended to refer to the product COA or packaging label. Detailed Description Emulsifier S-185/O-5 (tty alcohol polyoxyethylene ether) is a nonionic surctant, appearing as a white to light yellow paste with relatively stable chemical properties. Under proper storage conditions, the product can maintain its core properties such as emulsification, wetting, and dispersion for a long period. However, special attention is required as the product is hygroscopic. If not properly sealed after opening, it may absorb moisture from the air, leading to changes in active ingredient content and affecting performance. Regarding the shelf life, the product database does not provide specific data. Generally, for nonionic surctant products, under unopened and suitable storage conditions, the shelf life is usually 1 to 2 years. However, the exact shelf life should be based on the effective date indicated on the product quality certificate (COA) issued by Haian Guoli Chemical Co., Ltd. or on the outer packaging label. It is recommended to confirm the specific batch expiration date with the salesperson during procurement. Storage Conditions Overview Storage ElementSpecific Requirements Storage Temperature5～40 °C, avoid extreme high or low temperatures Light RequirementAvoid direct sunlight and strong light exposure Environmental RequirementCool, dry, well-ventilated warehouse, away from moisture Container RequirementKeep original packaging sealed, use stainless steel or plastic-lined drums and other corrosion-resistant containers Incompatible SubstancesStrong oxidizers, strong acids, strong bases, and other incompatible chemicals Ignition Source ManagementAway from heat sources, sparks, and open flames (product is not flammable, flash point >150°C, but general chemical storage regulations should still be followed) Opening ManagementUse as soon as possible after opening, immediately reseal remaining material for storage Application Recommendations To ensure the product performance is always at its best, it is recommended to follow the "first in, first out" principle, prioritizing the use of earlier batch inventory. After each use, check the container seal to prevent moisture and impurities from entering the air. If the product shows abnormal phenomena such as layering, discoloration, or odor after long-term storage, it is recommended to conduct a small sample test to confirm performance before deciding whether to continue use. Precautions The storage area should be equipped with spill emergency response equipment (such as absorbent materials, collection containers) to prevent accidental leakage from polluting the environment. The product is toxic to aquatic organisms; in case of leakage, it must not enter drainage systems, surce water, or soil. The storage area should be away from food, feed, and drinking water sources to avoid cross-contamination. During low winter temperatures, the product may thicken or solidify, which is a normal physical phenomenon. Before use, warm it at room temperature and stir evenly; this does not affect product quality.

Question 7

What safety precautions should be taken when using emulsifier S-185/O-5?

Accepted Answer

Use of emulsifier S-185/O-5 requires special attention to skin/eye irritation protection, respiratory protection, hazards of ingestion, and aquatic environmental risks. During operation, personal protective equipment must be worn throughout and work in a well-ventilated environment. Detailed Description Emulsifier S-185/O-5 is an industrial nonionic surctant. According to its safety data, this product is classified as a skin irritant (Category 2), serious eye irritant (Category 2), and respiratory tract irritant (Category 3, single exposure). It is harmful if swallowed (acute toxicity Category 4) and is toxic to aquatic life with long-lasting effects (hazardous to the aquatic environment, Category 2). Therefore, the safety specifications for chemical handling must be strictly observed during use. From a physicochemical hazard perspective, this product is not flammable, with a flash point greater than 150°C, but it should still be kept away from strong oxidizers and high-temperature heat sources. In routine operations, non-sparking tools should be used and anti-static measures taken. Burning may produce irritating or toxic fumes such as carbon monoxide and carbon dioxide. Suitable extinguishing agents include water spray, alcohol-resistant foam, dry powder, or carbon dioxide. In terms of personal protection, operators should wear protective gloves, safety goggles, and protective masks, avoiding contact with skin, eyes, and clothing. After operation, hands and exposed body parts must be thoroughly washed. Eating, drinking, and smoking are prohibited during operation. In case of skin contact, wash immediately with plenty of running water and soap. For eye contact, lift eyelids and rinse with plenty of running water for at least 15 minutes. If ingested, do not induce vomiting; seek medical attention immediately. Summary of Safety Hazard Classifications Hazard CategoryLevelDescription Skin corrosion/irritationCategory 2Causes skin irritation Serious eye damage/eye irritationCategory 2Causes serious eye irritation Specific target organ toxicity (single exposure)Category 3 (respiratory irritation)May cause respiratory irritation Acute toxicity (oral)Category 4Harmful if swallowed Hazardous to the aquatic environmentCategory 2Toxic to aquatic life with long-lasting effects Physicochemical hazards—Non-flammable liquid, flash point >150°C Key Safety Operation Points Engineering controls: Use only in well-ventilated areas; avoid inhalation of vapors or mists. Personal protective equipment: Must wear protective gloves, safety goggles, and protective masks; wear full protective clothing if necessary. Operation prohibitions: Do not eat, drink, or smoke during operation; avoid contact with skin, eyes, and clothing. Post-operation cleaning: Thoroughly wash hands and exposed body parts after operation. Storage Requirements Keep container tightly closed and store in a cool, dry, well-ventilated warehouse. Recommended storage temperature: 5~40°C; avoid direct sunlight. Keep away from heat sources, sparks, and open flames; avoid storing with incompatible substances such as strong oxidizers, strong acids, and strong bases. Use corrosion-resistant storage containers (e.g., stainless steel or plastic-lined drums). Use promptly after opening; reseal remaining material for storage. Leak and Emergency Treatment Precautions In case of a leak, immediately wear appropriate personal protective equipment to prevent the spill from entering drainage systems, surce water, or groundwater. For large spills, contain and absorb with inert materials such as sand, vermiculite, etc. Collect absorbed material in closed containers and dispose of according to local regulations by a licensed waste treatment cility. Clean contaminated area with water and detergent. If swallowed, immediately call a poison control center or seek medical attention. Rinse mouth with water. Do NOT induce vomiting unless instructed by medical personnel. This product is toxic to aquatic life; do not discharge untreated material into the environment.

Question 8

How to use emulsifier S-185/O-5? What is the recommended dosage?

Accepted Answer

The usage of emulsifier S-185/O-5 needs to be determined based on the specific application area. The general recommended dosage is 1% to 10% of the total formulation, and the specific amount should be optimized through experiments. Detailed Explanation Emulsifier S-185/O-5 (tty alcohol polyoxyethylene ether, CAS: 68439-49-6) belongs to nonionic surctants with an HLB value as high as 16-17. It has strong hydrophilicity and is easily soluble in water, capable of quickly dispersing and dissolving in water. The product is a white to light yellow paste at room temperature (melting point approximately 30-35°C). It is recommended to preheat and melt it with warm water (40-50°C) or stir to dissolve before adding to the formulation system to ensure uniform dispersion and fully exert its emulsifying and solubilizing effects. This product has an active matter content of ≥99%, excellent chemical stability, resistance to acids, alkalis, and hard water, and good compatibility with anionic, cationic, and other nonionic surctants. It can be used in combination with other surctants for synergistic effects or used alone as a high-efficiency emulsifier directly added to the oil phase or water phase. In actual production, it is usually added to the water phase, stirred to dissolve, and then mixed with the oil phase for emulsification. It can also be added as a stabilizing component during the later stage of formulation. Since the product has certain hygroscopicity and is irritating to skin and eyes (Category 2), protective gloves and goggles should be worn during operation, and it should be handled in a well-ventilated environment to avoid prolonged skin contact or inhalation of vapors/mists. The opened product should be used as soon as possible, and the remaining material should be resealed and stored at a temperature of 5-40°C, avoiding direct sunlight. Technical Parameters ParameterValue Ionic TypeNonionic AppearanceWhite to light yellow paste HLB Value16-17 Active Matter Content≥99% Melting PointApprox. 30-35°C pH (1% aqueous solution)5.0-7.0 Cloud Point (°C)>100 Moisture≤1.0% Surce Tension (0.1% aqueous solution, 25°C)Approx. 30-35 mN/m Solubility in WaterEasily soluble Foaming PropertiesLow to moderate * The above data comes from the Guoli Chemical Product Database. Application Recommendations — Reference Dosages by Field The database does not contain precise recommended dosages of emulsifier S-185/O-5 for each application field. The following are general reference dosages based on the product's HLB value (16-17) and industry practice. The optimal dosage should be determined through experiments according to the actual formulation system and process conditions: Application FieldRecommended Dosage (% of total formulation)Usage Instructions Pesticide Emulsifiable Concentrate/Emulsion in Water/Microemulsion3%~8%Used as an emulsifier in combination with other nonionic/anionic surctants, added to the oil phase or water phase and stirred evenly Industrial Hard Surce Cleaners1%~5%Directly added to the water phase to dissolve; combined with alkaline additives and chelating agents to enhance degreasing and deoiling effects Metalworking Fluids (Emulsifiable Oils)5%~15% (of concentrate)Used as the main emulsifier, combined with anionic emulsifiers such as sodium petroleum sulfonate, dissolved in base oil with slow stirring Textile Printing and Dyeing Auxiliaries (Scouring Agents, Leveling Agents)2%~8%Combined with other surctants and added to the working solution as a penetrating, emulsifying, and dispersing component Leather Degreasing/tliquoring Agents2%~6%In degreasing: directly added to the water phase; in tliquoring: pre-mixed with oils and ts before emulsification and dispersion Paints and Inks Dispersion0.5%~3% (based on pigment/resin weight)Added during the grinding stage to promote pigment wetting and dispersion, or added during the letdown stage to stabilize the emulsion system * The above table provides general industry reference values, not precise data from the Guoli Chemical product database. Actual dosage should be verified through experiments. Precautions Preheating Treatment: The product has a melting point of approx. 30-35°C. At low temperatures, it appears as a paste or solid. Before use, it is recommended to heat and soften it in a 40-50°C water bath. Do not heat directly with open flames or high-temperature steam to avoid damaging the product structure. Dissolution Order: Due to its high HLB value (16-17) and strong hydrophilicity, it is recommended to first dissolve this product in the water phase with thorough stirring, then add the oil phase for emulsification to obtain a more stable emulsion system. Combination for Synergy: Its emulsifying ability is already excellent when used alone. If combined with oil-soluble emulsifiers with low HLB values (such as Span series, monoglycerides, etc.), the blended HLB value can be adjusted to match the emulsification requirements of different oil phases, further improving emulsion stability. Safety Protection: Protective gloves and goggles must be worn during operation to avoid direct skin and eye contact. In case of accidental contact, immediately rinse with plenty of running water for at least 15 minutes. If irritation persists, seek medical attention promptly. Environmental Handling: This product is toxic to aquatic life (Category 2). Waste liquid containing this product must not be discharged directly into water bodies or soil. It should be collected and disposed of by qualified organizations in accordance with local environmental regulations. Compatibility Testing: When used in formulations containing strong electrolytes or high concentrations of acids or alkalis, it is recommended to conduct small-scale compatibility and stability tests first to ensure no layering, turbidity, or precipitation before scale-up production.

Question 9

In which industries and processes is emulsifier S-185\/O-5 mainly used?

Accepted Answer

As a high-performance nonionic surctant, emulsifier S-185\/O-5 is widely used in six major industries including pesticide formulation, industrial cleaning, metal processing, textile printing and dyeing, leather processing, and coatings and inks, playing a core role in key processes such as emulsification, dispersion, wetting, and penetration. Detailed Description Emulsifier S-185\/O-5 (chemical name: tty alcohol polyoxyethylene ether, CAS No.: 68439-49-6) is a white to pale yellow paste with high active content and low moisture. Its excellent emulsifying, wetting, dispersing, and solubilizing capabilities enable it to effectively reduce intercial tension and enhance the stability of multiphase systems. Meanwhile, this product possesses good acid resistance, alkali resistance, and hard water tolerance, and exhibits good compatibility with anionic, cationic, and other nonionic surctants, offering flexible formulation and adapting to various complex industrial recipes. In practical applications, S-185\/O-5 is primarily used as a high-efficiency emulsifier, wetting agent, and dispersant, significantly accelerating the spreading and penetration of treatment liquids on substrate surces, ensuring uniform and stable multiphase systems, and maintaining stable performance in acidic, alkaline, and hard water environments, thereby reducing the amount of additives and lowering overall costs. Application Industries and Processes Application IndustrySpecific Process\/ProductFunction Pesticide FormulationEmulsifiable Concentrate, Emulsion in Water, MicroemulsionProvides excellent emulsifying and dispersing properties, enhances formulation stability, and ensures uniform distribution of active pesticide ingredients during dilution and application. Industrial Hard Surce CleaningMetal, plastic and other hard surce cleanersPossesses good emulsifying and stripping capability for mineral oils, animal and vegetable oils and other greases, improving cleaning efficiency. Metalworking FluidsCutting fluids, grinding fluids, rust preventivesAs emulsifier and lubricating component, helps form stable emulsions, reduces friction and wear, improves cooling and rust prevention. Textile Printing and DyeingPretreatment, scouring agent, leveling agent, finishing auxiliariesEffectively disperses oil stains and impurities on fibers, promotes uniform dye uptake, improves printing and dyeing quality. Leather ProcessingDegreasing process, tliquoring processEfficiently emulsifies natural ts in degreasing; promotes uniform penetration of oils in tliquoring, enhancing leather softness and hand feel. Coatings and InksPigment dispersion in water-based coatings and water-based inksHelps resin and pigment stably disperse in the aqueous phase, improving leveling, storage stability, and film-forming performance. Application Suggestions In actual formulation design, it is recommended to reasonably adjust the addition amount of S-185\/O-5 according to the water-oil ratio of the system and the required HLB value. In pesticide microemulsions and emulsions in water, this product is usually used in combination with nonionic and anionic surctants to achieve the best emulsification stability. In metalworking fluids, it can be used in synergy with rust inhibitors and extreme pressure additives to build a high-performance emulsion system. In textile scouring and leveling processes, it is recommended to use it together with alkali agents or other auxiliaries depending on the fiber type and degree of soiling to fully exert its penetration and dispersion effects. Precautions This product is an industrial chemical. Harmful if swallowed, may cause skin and eye irritation. Wear protective gloves, goggles, and protective clothing during operation. Use in a well-ventilated area, avoid inhaling vapors or mist. Toxic to aquatic organisms with long-lasting effects. In case of leakage, prevent entry into water bodies or soil, and dispose of in accordance with local regulations. Storage temperature is recommended to be maintained at 5～40°C, avoid direct sunlight. After opening, use as soon as possible and reseal for storage. Keep away from incompatible substances such as strong oxidizing agents, strong acids, strong bases, and avoid mixed storage.

Question 10

What are the physicochemical technical parameters of Emulsifier S-185/O-5?

Accepted Answer

Physicochemical Technical Parameters of Emulsifier S-185/O-5 Detailed Description Emulsifier S-185/O-5 (chemical name: tty alcohol polyoxyethylene ether, alias: stearyl alcohol polyether-35, PEG-35 stearyl alcohol ether, CAS number: 68439-49-6) is a high-performance nonionic surctant, appearing as a white to light yellow paste. Its molecular structure and physicochemical properties endow the product with excellent emulsifying, wetting, dispersing, and solubilizing capabilities, along with outstanding resistance to acids, alkalis, and hard water, and good compatibility with various ionic and nonionic surctants. Under the production process of China Guoli Chemical, this product achieves high active content (≥99%) and low moisture (≤1.0%). It is widely used as an efficient emulsifier and dispersant in multiple industrial fields. The following technical parameters are derived from the product database test data and product standards of Guoli Chemical. Technical Parameters Basic Physicochemical Properties ParameterTypical Value / Description Chemical Nametty alcohol polyoxyethylene ether (stearyl alcohol polyoxyethylene ether) Trade Name / AliasPolyoxyethylene (35) stearyl ether, stearyl alcohol polyether-35, PEG-35 stearyl ether, Emulsifier S-185 CAS Number68439-49-6 Ionic TypeNonionic Molecular FormulaRO(CH₂CH₂O)ₙH (R=C16-18, n=35) Molecular WeightApprox. 1800 Appearance (25°C)White to light yellow paste Active Content≥99% Moisture≤1.0% pH Value (1% Aqueous Solution)5.0-7.0 pH Value (5% Aqueous Solution)5.0-7.0 Density (20°C)≤1.0 g/cm³ Melting PointApprox. 30-35°C Functional Indicators ParameterTypical Value / Description HLB Value16-17 Cloud Point>100°C Hydroxyl Value30±5 mgKOH/g Acid Value≤1.0 mgKOH/g Iodine Value≤2 gI₂/100g Saponification ValueNone Amine ValueNone Free Alcohol Content≤1.0% Surce and Intercial Properties ParameterTypical Value / Description Surce Tension (0.1% Aqueous Solution, 25°C)Approx. 30-35 mN/m Critical Micelle Concentration (CMC)Approx. 10⁻⁵ - 10⁻⁴ mol/L Penetration PowerMedium Foam CharacteristicsLow to medium foaming Solubility and Compatibility ParameterTypical Value / Description Water SolubilityEasily soluble in water Solubility in Organic SolventsEasily soluble in organic solvents such as ethanol and acetone Chemical StabilityResistant to acids, alkalis, salts, and hard water; chemically stable Alkali ResistanceExcellent Viscosity and Thermodynamic Properties ParameterTypical Value / Description Kinematic Viscosity (10% Aqueous Solution, 40°C)Approx. 300-500 mm²/s Low Shear Viscosity (40°C)300-500 mPa·s Refractive Index (40°C)Approx. 1.46 Flash Point>150°C HygroscopicityHygroscopic Safety and Environmental Parameters ParameterTypical Value / Description Heavy Metal Content (as Pb)≤10 mg/kg Arsenic Content (As)≤2 mg/kg Free Phosphoric AcidNone Monophosphate EsterNone Diphosphate EsterNone Application Recommendations Emulsifier S-185/O-5, with its HLB value as high as 16-17, is particularly suitable for O/W (oil-in-water) emulsification systems. It is recommended to be used at 2%-8% in pesticide emulsifiable concentrates, microemulsions, and emulsion concentrates; at 1%-5% in industrial cleaning agents; and at 3%-10% in metalworking fluids as an emulsifying and lubricating component. The specific dosage should be optimized through experiments based on the formulation system and target emulsified oil phase content. This product is a paste at room temperature. Before use, it can be slightly heated (approx. 35-40°C) to improve flowability for accurate weighing and dispersion. During preparation, it is recommended to dissolve it in the water phase first or premix with the oil phase before adding water for phase inversion; both methods can achieve good emulsification effects. Precautions The product is hygroscopic; after opening, it should be sealed promptly to prevent moisture absorption and caking. Avoid excessive temperature during melting or heating; prolonged exposure above 80°C may cause color deepening. Storage temperature is recommended to be maintained at 5-40°C; at low winter temperatures, the paste may harden, and it can be restored to its usable properties after warming. Avoid direct contact with skin and eyes during operation; use protective gloves and goggles.

Emulsifier S-185 (O-5)

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