Question 1

Is Peregal O-20 harmful to the human body? Does it have an impact on the environment?

Accepted Answer

Peregal O-20 is a low-toxicity substance, primarily causing irritation hazards to humans (skin, eyes, respiratory tract), and exhibits low toxicity and easy biodegradability in the environment, without persistence or bioaccumulation. Detailed Explanation Peregal O-20 (tty alcohol polyoxyethylene (20) ether, CAS No.: 68439-49-6) is a non-ionic surctant. According to the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) and product safety data, this product is not classified as highly toxic or highly hazardous, but it does have certain irritant properties to humans. Under normal industrial use conditions, as long as safety operating procedures are followed and appropriate personal protective equipment is worn, the health risks are manageable. In terms of the environment, Peregal O-20 is relatively friendly. Ecotoxicological data indicate that this product has low toxicity to aquatic organisms and good biodegradability, meaning it can be decomposed by microorganisms in the natural environment and does not persist for long periods. It has been assessed as not possessing persistent, bioaccumulative, or toxic (PBT) properties, nor does it meet the criteria for very persistent and very bioaccumulative (vPvB) substances. Summary of Human Health Effects Hazard Type GHS Classification Hazard Code Description Skin irritation Category 2 H315 Direct contact may cause skin redness, itching, and other irritation reactions Serious eye irritation Category 2A H319 Splash into eyes causes noticeable irritation, pain, and redness Respiratory irritation Category 3 H335 Inhalation of dust or fumes generated by heating may irritate the respiratory tract Acute oral toxicity Low toxicity — Rat oral LD50 > 2000 mg/kg Summary of Environmental Effects Evaluation Indicator Conclusion Aquatic toxicity Low toxicity Biodegradability Easily biodegradable Persistence (PBT assessment) Not persistent Bioaccumulation (PBT assessment) Not bioaccumulative vPvB characteristics Does not meet criteria for very persistent and very bioaccumulative Application Recommendations Peregal O-20 is widely used in textile printing and dyeing, pesticide formulations, daily chemicals, industrial detergents, metal processing, papermaking, and leather industries. In these application scenarios, the product is ultimately diluted or treated before discharge, and its good biodegradability means it has a relatively small impact on downstream aquatic ecosystems. Even so, industrial wastewater containing this product is recommended to undergo standard wastewater treatment before discharge to avoid direct release of high concentrations into natural water bodies. Precautions Operational protection: Wear protective gloves, goggles, or ce shield (P280) during handling; avoid inhaling dust or fumes; use only in well-ventilated areas (P271). Skin contact: If contaminated, remove contaminated clothing immediately and rinse thoroughly with plenty of soap and water (P302+P352); seek medical attention if irritation persists. Eye contact: Rinse immediately with plenty of water for at least 15 minutes, keeping eyelids open; if irritation persists, seek medical attention immediately (P305+P351+P338). Environmental release: Disposal should comply with local, national, and international regulations (P501); prevent unauthorized direct release into the environment. Storage conditions: Store in a cool, dry, well-ventilated warehouse; keep containers tightly closed; keep away from strong oxidizing agents and strong acids/bases; avoid heat, moisture, and direct sunlight.

Question 2

What to do if problems occur during the use of Peregal O-20? How to obtain technical support?

Accepted Answer

Problems during the use of Peregal O-20 can be systematically resolved through process troubleshooting, parameter adjustment, and official technical support. Detailed Explanation As a non-ionic surctant, common problems encountered during the use of Peregal O-20 typically include: poor emulsification effect, emulsion stratification or demulsification, slow dissolution rate, unsatisctory solubility, and turbidity or precipitation when compounded with other auxiliaries. Most of these issues are related to usage conditions rather than product quality problems, and can often be solved by adjusting process parameters. First, conduct a self-check of usage conditions: Confirm whether the water temperature is suitable (Peregal O-20 is a waxy solid; it is recommended to pre-dissolve or melt it in 40-60°C hot water with stirring); confirm whether the pH environment is reasonable (this product has a wide acid and alkali resistance range, generally stable at pH 3-11); confirm whether the feeding sequence and method are appropriate (when compounding with other surctants, it is recommended to add in batches with thorough stirring); confirm whether attention has been paid to high water hardness (the product itself is hard water resistant, but may be affected when compounded with anionic auxiliaries that are not hard water resistant). If the self-check does not resolve the issue, Hai'an County Guoli Chemical Co., Ltd. provides multi-channel technical support. Due to the wide application fields of Peregal O-20 (textile printing and dyeing, pesticide formulations, daily chemicals, industrial cleaning, metal processing, papermaking, leather, etc.), application processes vary significantly across different industries. It is recommended to contact the manucturer for targeted technical guidance. Common Problems and Countermeasures Common Problem Possible Cause Recommended Measure Unstable emulsion, stratification or demulsification HLB value mismatch; insufficient dosage; special oil phase type; inadequate mixing Confirm that the HLB value of Peregal O-20 is about 15-16, suitable for O\/W systems; appropriately increase dosage or compound with low-HLB emulsifiers; increase mixing intensity and homogenization time Slow dissolution with lumps Low water temperature; direct addition into cold water; excessive one-time feeding amount Use 40-60°C warm water for pre-dissolution; add slowly with stirring; or pre-chip the solid before adding Turbidity when compounded with anionic\/cationic auxiliaries pH mismatch; salting out due to high concentration; interaction between ionic auxiliaries and polyoxyethylene chains Adjust compounding sequence: first dissolve Peregal O-20 in water before adding other auxiliaries; reduce total active matter concentration in the system; add an appropriate amount of solubilizer Unsatisctory leveling effect or color spotting Insufficient dosage; unsuitable dye bath temperature or time; mismatch with dye type Peregal O-20 has good affinity for direct dyes and vat dyes; dosage is generally 0.5-2g\/L; appropriately extend dyeing time; adjust dyeing temperature Abnormal product color or state (darkening, caking) Improper storage; moisture absorption; high temperature Check storage conditions: should be cool, dry, ventilated, in a sealed container, away from strong oxidizers and strong acids\/alkalis; stop using abnormal products Channels for Technical Support Hai'an County Guoli Chemical Co., Ltd. provides the following technical support methods for Peregal O-20 users: Phone consultation: Contact the technical department of Guoli Chemical directly to discuss specific product usage issues and obtain real-time guidance. Sample shipping and analysis: Send problem samples to the company's laboratory for physicochemical index testing (e.g., cloud point, hydroxyl value, emulsifying power, etc.) to help identify the root cause of the problem. Application experiment support: For specific formulations or processes, entrust Guoli Chemical to conduct small-scale or pilot-scale experiments, providing customized formulation suggestions and process parameter optimization solutions. On-site technical service: For bulk users, coordinate technicians to conduct on-site process debugging and operation training. Product data request: Obtain product TDS (Technical Data Sheet), MSDS (Safety Data Sheet), and relevant application guides to assist in problem diagnosis. Precautions Before contacting technical support, please prepare the following information: product batch number, purchase date, storage conditions, specific usage formulation and process parameters, and a detailed description of the problem (photos or samples are preferred) to help technicians quickly locate the issue. Peregal O-20 is a low-toxicity product (oral LD50 > 2000 mg\/kg), but protective gloves and goggles should still be worn during operation to avoid direct skin and eye contact (H315 skin irritation, H319 serious eye irritation). In case of skin or eye contact, refer to the emergency measures in the safety data sheet (skin: wash with soap and water; eyes: rinse with water for at least 15 minutes and seek medical attention). Disposal of waste products and packaging must comply with local environmental regulations; do not discharge into the environment arbitrarily.

Question 3

How to purchase Peregal O-20? What is the minimum order quantity?

Accepted Answer

To purchase Peregal O-20, please contact the sales team of Haian Guoli Chemical Co., Ltd. directly. There is no fixed minimum order quantity; please confirm with the sales representative. Detailed Description Peregal O-20 (CAS: 68439-49-6) is a routinely produced industrial surctant by Guoli Chemical. It is not sold through online retail stores and requires enterprise procurement procedures. The product database does not have a publicly fixed price; the price fluctuates in real time based on raw material market trends, purchase volume, and other ctors. The above price is for reference only. The actual transaction price is subject to the latest quotation from the sales team. Regarding the minimum order quantity (MOQ), the product database has not set a uniform mandatory minimum. In the chemical industry, non-ionic surctant products are usually shipped in whole packaging units as the minimum shipment. The standard packaging specification of Peregal O-20 is 20kg woven bag. The specific minimum order quantity needs to be confirmed through negotiation with the sales representative of Guoli Chemical during inquiry. Bulk purchases usually offer better prices. Purchasing Process Recommendation It is recommended to proceed as follows to ensure efficient and accurate information acquisition: Clarify needs: Confirm the exact product name (Peregal O-20 / Leveling Agent O-20), quantity, and intended use. Contact sales: Inquire directly via the sales hotline or corporate email published on the official website of Haian Guoli Chemical Co., Ltd. Request samples: If using the product for the first time, request a small sample for application testing to ensure it matches specific process requirements. Confirm documents: When purchasing, sign a purchase and sales contract, and obtain the product quality inspection report (COA) and Safety Data Sheet (SDS/MSDS) along with the shipment. Technical Parameters (For purchase reference) ParameterSpecification Chemical NameC16-18 tty Alcohol Polyoxyethylene (20) Ether CAS No.68439-49-6 Ionic TypeNon-ionic Surctant AppearanceWhite to slightly yellow waxy solid/paste HLB Value15-16 Active Content≥99% pH of 1% Aqueous Solution5.0-7.0 Cloud Point88-95℃ Standard Packaging20kg/woven bag PriceContact sales for latest quotation Minimum Order QuantityNo fixed standard, please consult sales team Precautions This product is an irritant (GHS classification). Wear protective gloves and goggles when handling. Store in a cool, dry, ventilated place away from strong oxidizers, moisture, and direct sunlight. The product is not flammable or explosive, not classified as dangerous goods, and can be transported via regular logistics. The above technical parameters are sourced from the Guoli Chemical product database. Request batch COA to verify specific data.

Question 4

Does Peregal O-20 meet environmental requirements? Can a test report be provided?

Accepted Answer

Peregal O-20 meets conventional environmental requirements, with eco-friendly characteristics such as easy biodegradability and low ecotoxicity, but the product database currently does not contain downloadable test report files. Detailed Explanation According to the ecotoxicological information in the Guoli Chemical product database, Peregal O-20 (C16-18 tty alcohol polyoxyethylene (20) ether, CAS number: 68439-49-6) performs well in environmental protection. This product is readily biodegradable, meaning it can be decomposed by microorganisms in the natural environment without long-term accumulation. At the same time, it has been assessed as not possessing persistent, bioaccumulative, or toxic (PBT) properties, and does not qualify as a very persistent, very bioaccumulative (vPvB) substance, indicating low environmental residue risk and no enrichment through the food chain. Ecotoxicological data show that Peregal O-20 has low toxicity to aquatic organisms, with an acute oral toxicity LD50 (rat) greater than 2000 mg/kg, placing it in the low-toxicity category. The product itself is non-flammable and non-explosive, and under normal storage and use conditions, thermal decomposition does not produce harmful gases. In wastewater treatment systems, due to its good biodegradability, conventional biochemical treatment processes can effectively remove it. Based on the above data, under compliant use and standard discharge conditions, Peregal O-20 meets the basic requirements of current chemical environmental management. Regarding test reports, we apologize — the current product database does not provide downloadable test report files online (such as SGS reports, MSDS certifications, RoHS test reports, etc.). If you require formal product test reports, batch quality inspection reports (COA), or specific environmental certification documents (such as REACH compliance declarations, ZDHC certifications, etc.), it is recommended that you submit a request through Guoli Chemical's official channels (official website customer service or sales manager). We will provide the latest batch test reports with an official seal and relevant compliance documents. Environmentally Related Technical Parameters ParameterDataEnvironmental Significance BiodegradabilityReadily biodegradableCan be rapidly decomposed by microorganisms in the natural environment without persistent residues PBT / vPvB AssessmentDoes not possess PBT or vPvB propertiesNo persistence, no bioaccumulation, no high toxicity risk Aquatic ToxicityLow toxicityMinimal impact on aquatic organisms Acute Oral Toxicity (Rat)LD50 > 2000 mg/kgClassified as low toxicity Heavy Metals (as Pb)≤10 mg/kgComplies with conventional chemical heavy metal limits Arsenic Content≤2 mg/kgComplies with conventional chemical arsenic limits Nonionic Active Content≥99%High effective component, low by-products, high use efficiency Dangerous Goods ClassificationNot classified as dangerous goodsNo special environmental risks in transport per ADR/RID, IMDG, IATA regulations Application Recommendations With its excellent environmental characteristics, Peregal O-20 is particularly suitable for application fields requiring high ecological safety: Textile Printing and Dyeing Industry: As a leveling agent and dispersant, its readily biodegradable property helps reduce the difficulty of treating printing and dyeing wastewater, aligning with the green printing and dyeing development trend. Pesticide Formulations: As an emulsifier for emulsion concentrates and microemulsions, its low toxicity and low residue characteristics meet modern pesticide reduction and efficiency enhancement environmental requirements. Daily Chemical Products: Used in creams, lotions, shampoos, etc., it meets the strict environmental and safety standards for raw materials in consumer chemicals. Precautions Personal protective equipment (gloves, goggles) should still be worn during handling, as the product is a skin and eye irritant (H315, H319); avoid direct contact. When disposing of waste, comply with all local, national, and international applicable regulations (P501); prevent environmental release, and it is recommended to discharge after treatment through standardized wastewater treatment systems. If formal third-party environmental test reports or compliance statements are required, please contact Guoli Chemical customer service, and we will provide corresponding documents based on your specific needs.

Question 5

What are the advantages of Peregal O-20 compared to other similar products?

Accepted Answer

In the Peregal series, Peregal O-20 achieves excellent emulsifying capability and wide process adaptability through the optimal combination of C16-18 long carbon chains and 20 EO groups, making it a benchmark product in O/W emulsion systems and high-demand leveling processes. Detailed Explanation Compared to products in the same series such as Peregal O-3, O-9, and O-10, which use C12-14 alcohols as raw materials, Peregal O-20 uses C16-18 (cetearyl alcohol) as the initiator, with a longer carbon chain that provides stronger hydrophobic anchoring ability. When emulsifying mineral oils, animal and vegetable oils, and organic solvents, the intercial film formed by O-20 is denser, and the emulsion stability is significantly superior to short-chain products, making it especially suitable for preparing highly stable O/W emulsion systems. Regarding the EO number (ethylene oxide addition number), the 20 EO units of O-20 are at the "golden balance point" in the Peregal series: compared to O-9 and O-10, it has stronger hydrophilicity, better water solubility, and higher operational convenience; compared to O-80, it retains more lipophilicity, and its emulsification efficiency for oily substances is not weakened by excessive hydrophilicity. This allows O-20 to effectively disperse dyes in textile leveling while maintaining good affinity for fibers, preventing color spots and uneven dyeing. The nonionic nature of Peregal O-20 gives it outstanding resistance to hard water, acids, and alkalis within the series, and it can be freely compounded with anionic, cationic, and amphoteric surctants with significant synergistic effects. In fields such as pesticide formulations, industrial cleaning, and daily chemical creams and emulsions, where emulsification stability and compatibility requirements are demanding, O-20 is one of the best comprehensive performance choices. Technical Parameters Product ModelStarting AlcoholEO Number (approx.)Appearance at 25°CKey Property Comparison Peregal O-3C12-143Light yellow liquidStrong lipophilicity, weak emulsifying power, mostly used as intermediate or oil-soluble emulsifier Peregal O-9C12-149White pasteGood wetting and penetration, but emulsification stability is inferior to O-20 Peregal O-10C12-1410White to light yellow pasteGeneral-purpose emulsifying dispersant, moderate emulsifying power for oils and ts Peregal O-15C16-1815White to slightly yellow paste/solidHydrophilic-lipophilic balance near equilibrium, emulsifying power close to O-20 but slightly weaker hydrophilicity Peregal O-20C16-1820Milky white to light yellow waxy solidExcellent O/W emulsifying ability, optimal hydrophilic-lipophilic balance, outstanding leveling performance Peregal O-80C16-1880White to slightly yellow flake solidExtremely strong hydrophilicity, good solubility, but emulsifying power reduced due to insufficient lipophilicity Application Suggestions Textile Dyeing and Printing: As a leveling agent and dispersant, Peregal O-20 is the preferred auxiliary for direct dyes and vat dyes. The recommended dosage is 0.5%-2.0% of the dye liquor weight, effectively slowing down the dyeing rate and preventing uneven coloration. Pesticide Formulation Emulsifier: In the preparation of EC emulsifiable concentrates and aqueous emulsions, O-20 can be used alone or compounded with other emulsifiers (such as Nongru 500# series), with a recommended dosage of 3%-8%, forming an emulsion with excellent dilution stability. Daily Chemical Creams and Emulsions: As a primary O/W emulsifier or co-emulsifier, the recommended dosage is 1%-5%, and it can be compounded with nonionic or anionic emulsifiers to give the cream a fine and glossy texture. Precautions Wear protective gloves and goggles during operation to avoid skin and eye contact, and thoroughly wash exposed skin after use. Store in a cool, dry, and well-ventilated place, away from strong oxidizers, strong acids, and strong alkalis, and avoid direct sunlight. This product is a waxy solid and may harden at low temperatures in winter. Before use, it can be properly heated in a warm water bath (40-50°C), stirred evenly, and then added.

Question 6

How should Pingpengjia O-20 be stored? What is the shelf life?

Accepted Answer

Pingpengjia O-20 should be stored in a cool, dry, well-ventilated warehouse, with the container kept tightly closed, away from strong oxidizers and acids/alkalis. There is no official shelf life data in the database. Generally, under proper storage conditions, the shelf life is recommended to be 1–2 years. Detailed Explanation Pingpengjia O-20 (C16-18 tty alcohol polyoxyethylene (20) ether) is a nonionic surctant, appearing as a milky white to light yellow waxy solid or paste at room temperature. Its physicochemical properties are relatively stable, non-flammable, and non-explosive, but proper storage is crucial for maintaining product performance. Improper storage may lead to moisture absorption, caking, color deepening, or reduced surce activity. This product should be stored in a dedicated warehouse with the container kept tightly closed, using original or compatible material containers (e.g., polyethylene, stainless steel). The storage area must be equipped with spill containment cilities, and the floor should be impermeable. Keep away from incompatible substances such as strong oxidizers, strong acids, and strong alkalis, and avoid heat, moisture, and direct sunlight. Regarding shelf life: There is no official shelf life mark for Pingpengjia O-20 in the Guoli Chemical product database. According to common experience in the nonionic surctant industry, under strict compliance with the above storage conditions, the typical shelf life of unopened Pingpengjia O-20 is 1–2 years. It is recommended to follow the "first in, first out" principle, use promptly after opening, and regularly check for changes in appearance and performance. Storage Conditions at a Glance Storage ElementSpecific Requirement TemperatureCool environment, avoid high temperature and heat HumidityDry environment, strictly prevent moisture VentilationGood ventilation LightingAvoid direct sunlight ContainerKeep tightly closed, original or compatible material container Isolation RequirementsKeep away from strong oxidizers, strong acids, strong alkalis Safety cilitiesSpill containment cilities, impermeable floor treatment Application Recommendations Immediately reseal the container after each use to prevent the product from absorbing moisture from the air, which may cause caking or deterioration. If the product shows obvious color deepening (e.g., turning dark brown), off-odor, or delamination, it is recommended to stop using and test a sample before making a judgment. Precautions Wear protective gloves and goggles during operation to avoid direct contact with skin and eyes Prevent formation and accumulation of combustible dust clouds (although not flammable, dust accumulation poses a hazard) Waste disposal must comply with local and national regulations to prevent environmental release It is recommended to use within 6 months after opening to ensure optimal performance

Question 7

What safety precautions should be taken when using Peregal O-20?

Accepted Answer

Peregal O-20 is a low-toxicity nonionic surctant, but it can cause skin, eye, and respiratory tract irritation. Protective equipment should be worn and good ventilation maintained during operation. Detailed Description Peregal O-20 (tty alcohol polyoxyethylene (20) ether, CAS number: 68439-49-6), classified according to the Globally Harmonized System of Classification and Labelling of Chemicals (GHS), is an irritant substance (Xi). The main hazards include: skin irritation (Category 2, H315), serious eye irritation (Category 2A, H319), and respiratory tract irritation (Category 3, H335). Risk phrases are R36/37/38, meaning irritating to eyes, respiratory system, and skin. From a toxicological perspective, the acute oral LD50 (rat) of Peregal O-20 is greater than 2000 mg/kg, placing it in the low toxicity category, and it is relatively safe under normal industrial use conditions. However, it should be noted that this product is non-flammable and non-explosive, and under normal storage and use conditions, thermal decomposition does not produce harmful gases. Ecotoxicological data indicate that it has low toxicity to aquatic organisms, is readily biodegradable, and does not possess persistent, bioaccumulative, and toxic (PBT) or very persistent and very bioaccumulative (vPvB) properties. Safe Handling Precautions When handling Peregal O-20, the following precautions should be strictly observed to minimize exposure risks: Ventilation requirements: Avoid inhaling dust or mist (P261). Use only outdoors or in a well-ventilated area (P271) to prevent the formation and accumulation of combustible dust clouds. Personal protective equipment: Wear appropriate protective equipment during operation, including protective gloves, goggles, or ce shield (P280). Hygiene practices: Thoroughly wash exposed skin immediately and thoroughly after handling (P264). Avoid contact with broken skin and mucous membranes. Area management: Maintain good industrial hygiene practices in the workplace. Non-operating personnel should stay away from operating areas. Emergency Response Measures Exposure TypeEmergency Response Skin contactImmediately remove all contaminated clothing and rinse skin thoroughly with plenty of soap and water (P302+P352). If irritation persists or worsens, seek medical attention. Eye contactRinse immediately with plenty of water gently and slowly for at least 15 minutes, keeping eyelids open. If irritation persists, seek medical attention immediately (P305+P351+P338). InhalationMove the affected person to fresh air and keep breathing unobstructed. If feeling unwell, immediately call a poison control center or doctor (P312). IngestionRinse mouth with water. Do NOT induce vomiting. Seek medical attention immediately and show the container or label. Storage Conditions This product should be stored in a cool, dry, and well-ventilated dedicated warehouse. Specific requirements are as follows: Keep container tightly closed and store in original or compatible material containers. Keep away from strong oxidizers, strong acids, strong bases, and other incompatible materials. Avoid heat, moisture, and direct sunlight. The storage area should be equipped with spill containment cilities, and the floor should be impermeable. Transportation and Disposal According to United Nations transport regulations (ADR/RID, IMDG, IATA), Peregal O-20 is not classified as dangerous goods and can be transported conventionally. When disposing of waste, comply with all applicable local, national, and international regulations (P501) to prevent environmental release. General Safety Phrases S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36: Wear suitable protective clothing. Important Note The above safety information is based on the Guoli Chemical product database and GHS classification standards. It is recommended that users consult the product Safety Data Sheet (SDS) before use and establish comprehensive safety operating procedures based on specific application scenarios. For more detailed safety data or technical support, please contact the Guoli Chemical technical team.

Question 8

How to use Peregal O-20? What is the recommended dosage?

Accepted Answer

How to use Peregal O-20 varies by application area. The recommended dosage is typically 0.1%~5% of the total working solution, but the specific amount should be determined through experiments based on process requirements and formulation system. Detailed Description Peregal O-20 is a highly hydrophilic nonionic surctant with an HLB value of 15~16. It appears as a milky white to light yellow waxy solid (melting point approximately 40~50°C). When using, it should be fully dissolved and dispersed in warm or hot water before being added to the system. Due to its stable chemical properties, it is resistant to acids, alkalis, and hard water, and can be compounded with various anionic, cationic, and amphoteric surctants, making it applicable under a wide range of conditions. The core functions of Peregal O-20 include emulsification, leveling, dispersion, wetting, and penetration. In textile dyeing and printing, it is used as a leveling agent and dispersant; in pesticide formulations, as an emulsifier for emulsions (EW) and microemulsions; in daily chemicals and detergents, as an O/W emulsifier and detergent component; in metalworking, papermaking, leather, and other industrial fields, as a penetrant and wetting agent. The usage method and recommended dosage vary by application scenario. Since the Guoli Chemical product database does not provide specific recommended dosages for each application area, the following recommended amounts are reference values based on common industry practices and product physicochemical properties (e.g., active content ≥99%, critical micelle concentration approx. 0.007%, HLB value 15~16, cloud point 88~95°C, etc.). Haian Guoli Chemical Co., Ltd. recommends that users conduct small-scale experiments on new formulations or processes to determine the optimal dosage for their specific system. Reference Dosage by Application Area Since the product database does not list specific recommended amounts, the following are reference ranges based on common industry practices: Application Area Function Recommended Dosage (w/w) Usage Instructions Textile Dyeing and Printing Leveling agent, Dispersant 0.2%~1.0% (based on bric weight) Liquor ratio 1:10~1:20, dissolve in warm water at 40~60°C before adding to dye bath Pesticide Formulation Emulsifier for EW/Microemulsion 2%~5% (of total formulation) Mix with oil phase and heat to 50~60°C, stir well, then slowly add to water phase Daily Chemicals (Creams/Lotions) Primary O/W emulsifier or co-emulsifier 1%~3% Heat with oil phase to 70~75°C, mix with water phase and emulsify, homogenize for 3~5 minutes Liquid Detergents Detergent component, Solubilizer 0.5%~2% Dissolve in water and compound with other surctants, stir well Metalworking Fluids Penetrant, Wetting agent 0.5%~1.5% Dissolve directly in working fluid, stir well Leather Processing Penetrant 0.5%~1% Use in soaking, deliming, etc. Better effect at 40~50°C Papermaking Industry Wetting and dispersing aid 0.1%~0.5% Mix with pulp or use in coating formulation Note: The above dosages are recommended reference values. Actual usage should be optimized based on specific formulation, process conditions, and performance requirements. Guoli Chemical recommends conducting small-scale and pilot-scale tests before bulk use. Key Points for Usage Dissolution Method: Peregal O-20 is a waxy solid (melting point 40~50°C). It is recommended to dissolve it first in warm water (40~60°C) with stirring to prepare a 10%~20% stock solution, then add it to the working system. Adding directly to cold water may result in slow dissolution. Emulsification Operation: When used as an emulsifier to prepare O/W emulsions, typically add Peregal O-20 to the oil phase, heat to 50~60°C to melt, then slowly add the water phase under stirring, or use a homogenizer at high speed for 3~5 minutes to obtain a fine and stable emulsion. Compounding Performance: Peregal O-20 is a nonionic surctant that can be compounded with anionic (e.g., LAS, AES), cationic, and amphoteric surctants in any ratio, producing synergistic effects and enhancing overall performance. Precautions Safety Protection: Peregal O-20 is irritating to skin and eyes (H315, H319). Wear protective gloves and goggles during operation. In case of skin contact, wash immediately with soap and plenty of water; in case of eye contact, rinse with water for at least 15 minutes and seek medical advice. Ventilation: When handling the solid product, trace dust may be generated. Use in a well-ventilated area (P271) and avoid inhaling dust/fumes (P261). Storage Conditions: Store in a cool, dry, well-ventilated place, keep container tightly closed, and keep away from strong oxidizers and strong acids/alkalis. Avoid heat, moisture, and direct sunlight. The product is slightly hygroscopic; reseal promptly after opening. Cloud Point Limitation: The cloud point of Peregal O-20 is 88~95°C (1% aqueous solution). In high-temperature or strong electrolyte systems, it may become turbid or precipitate. Pay attention to this characteristic in high-temperature processes. However, it exhibits excellent alkali resistance and remains stable in concentrated alkali solutions. Environmental Disposal: Peregal O-20 is readily biodegradable and has low toxicity to aquatic organisms. Nonetheless, comply with local regulations for wastewater and waste liquid disposal to prevent direct discharge into the environment. Packaging Specifications: Guoli Chemical provides 20 kg woven bag packaging. Please consult the sales department for specific packaging and transportation information. For detailed usage recommendations and technical support tailored to specific formulations or processes, please contact the technical team of Haian Guoli Chemical Co., Ltd. We will provide professional technical services and sample support.

Question 9

What are the main industries and processes where Peregal O-20 is applied?

Accepted Answer

Peregal O-20 is widely used in textile dyeing and printing, pesticide formulations, daily chemicals, industrial and household detergents, metal processing, papermaking, and leather processing, among other industries. With its excellent emulsifying, dispersing, wetting, and penetrating properties, it plays a key role in various processes. Detailed Description Peregal O-20 (chemical name: C16-18 tty alcohol polyoxyethylene (20) ether) is a nonionic surctant, appearing as an off-white to light yellow waxy solid or paste, with CAS number 68439-49-6. The polyoxyethylene chain in its molecular structure imparts excellent hydrophilicity, while the long-chain tty alcohol group provides good lipophilicity, making Peregal O-20 perform exceptionally well in O/W (oil-in-water) emulsion systems. With a moderate HLB value, it is an indispensable multifunctional additive in formulations across various industries. The core advantage of Peregal O-20 lies in its broad compatibility—its nonionic nature allows it to be freely compounded with anionic, cationic, and amphoteric auxiliaries and surctants, resulting in significant synergistic effects. Additionally, the product exhibits excellent acid-base stability (remaining active over a wide pH range), hard water resistance (unaffected by calcium and magnesium ions), and efficient wetting and penetrating properties. These comprehensive characteristics enable its application across multiple industrial fields. Application Fields and Process Details I. Textile Dyeing and Printing IndustryPeregal O-20 serves as an efficient leveling agent and dispersant in textile dyeing processes. It effectively slows down the dye uptake rate, promotes uniform dye distribution, prevents color spots and streaks, and ensures even and vibrant bric coloration. It has good affinity for direct dyes and vat dyes, significantly improving dyeing uniformity and color stness. II. Pesticide FormulationsIn the field of pesticide formulations, Peregal O-20 is used as an emulsifier to prepare pesticide emulsion in water (EW) and microemulsion (ME). It effectively reduces the oil-water intercial tension, forming stable and well-dilutable emulsions, thereby improving the utilization efficiency and field efficacy of pesticides. III. Daily ChemicalsIn daily chemical products such as creams, lotions, and shampoos, Peregal O-20 acts as a primary O/W emulsifier or co-emulsifier, forming a stable oil-in-water system and imparting a fine and bright texture to the cream. It also solubilizes oily fragrances and active ingredients into the aqueous system, increasing product transparency and enhancing overall texture and stability. IV. Industrial and Household Liquid DetergentsPeregal O-20 provides excellent detergency, emulsifying, and dispersing performance. Leveraging its wetting, penetrating, and emulsifying effects, it rapidly removes and disperses oily stains, sweat, and other soils from bric fibers and hard surces, significantly improving the cleaning efficacy of liquid detergent products. V. Metal ProcessingAs a penetrant and wetting agent, Peregal O-20 improves the wetting effect of metalworking fluids (e.g., cutting fluids, grinding fluids) on metal surces, accelerating liquid spreading and enhancing cooling and lubrication efficiency. VI. Papermaking IndustryIn the papermaking process, it is used to improve pulp uniformity and paper quality, enhancing the dispersion of pulp fibers and the penetration of coating liquids. VII. Leather ProcessingIt promotes the penetration of various auxiliaries into the leather fibers, improving leather softness and hand feel. It is applicable in processes such as soaking, degreasing, and tliquoring. Technical Parameters ParameterIndicator/Description Chemical NameC16-18 tty alcohol polyoxyethylene (20) ether CAS Number68439-49-6 Product TypeNonionic surctant AppearanceOff-white to light yellow waxy solid or paste IonicityNonionic HLB RangeApproximately 15-16 (suitable for O/W emulsions) Acid-Base Stability RangeStable over a wide pH range Hard Water ResistanceExcellent, unaffected by calcium and magnesium ions CompatibilityCan be compounded with anionic, cationic, and amphoteric surctants Acute Oral Toxicity (LD50)>2000 mg/kg (rat), low toxicity BiodegradabilityReadily biodegradable, not PBT/vPvB Application Recommendations Textile Leveling: Recommended dosage is 0.5%-2% of the dye bath weight. For high-temperature and high-pressure dyeing, it is recommended to pre-dissolve the product before adding to the dye bath. It can be used with disperse dyes or vat dyes. Pesticide Emulsification: In emulsion in water formulations, it is typically used as one component of a composite emulsifier. It is recommended to compound it with anionic emulsifiers (e.g., calcium salts). The total emulsifier dosage is generally 5%-10% of the oil phase weight. Daily Chemical Creams: As an O/W emulsifier, the recommended dosage is 1%-5% of the total formulation. It can be used synergistically with co-emulsifiers such as cetearyl alcohol to obtain a finer cream texture. Liquid Detergents: As a detergency booster, the recommended addition level is 1%-3% of the total formulation. The product is a waxy solid or paste. Before use, it is recommended to pre-dissolve in warm water (40-60°C) or melt by heating to cilitate uniform dispersion. Precautions Skin and Eye Irritation: This product is an irritant (Xi class), may cause skin irritation (H315) and serious eye irritation (H319). Wear protective gloves and goggles during handling. Respiratory Protection: Avoid inhalation of dust or mist. Use only in well-ventilated areas. If inhaled, move to fresh air immediately. Emergency Measures: In case of skin contact, wash immediately with plenty of soap and water. In case of eye contact, rinse gently with water for at least 15 minutes and seek medical attention. Do not ingest. Storage Conditions: Store in a cool, dry, well-ventilated warehouse. Keep container tightly closed. Keep away from strong oxidizers, strong acids, and strong bases. Avoid heat, moisture, and direct sunlight. Environmental Disposal: This product is not classified as dangerous goods. Waste disposal should comply with local and national regulations to prevent environmental release.

Question 10

What are the physicochemical technical parameters of Peregal O-20?

Accepted Answer

Peregal O-20 is a nonionic tty alcohol polyoxyethylene ether surctant. It is a waxy solid at room temperature, with an HLB value of 15-16. It is easily soluble in water and exhibits excellent emulsifying, leveling, penetrating, and acid-alkali resistance properties. Detailed Description Peregal O-20 (CAS No.: 68439-49-6), with the chemical name C16-18 tty alcohol polyoxyethylene (20) ether, has a molecular formula of RO(CH₂CH₂O)ₙH (R=C16-18, n=20) and an average molecular weight of approximately 1100-1200. It appears as a white to slightly yellow waxy solid or paste, with a melting point of about 40-50°C and a flash point greater than 150°C (closed cup). It is a low-toxicity, non-flammable, and non-explosive product. As a classic nonionic surctant, this product's core advantage lies in its wide pH adaptability and excellent compatibility. It can be used in combination with anionic, cationic, and amphoteric surctants, maintaining stable surce activity and superior emulsifying ability in hard water, acidic, and alkaline solutions. In textile dyeing and printing, it has good affinity for direct dyes and vat dyes, effectively slowing down the dye uptake rate and ensuring level dyeing results. In terms of physicochemical properties, Peregal O-20 is a low-foaming type (foam height of only 10-20mm in a 1% aqueous solution at 50°C), has low surce tension (approximately 30-35 mN\/m), and a very low critical micelle concentration (approximately 0.007%). These attributes make it exhibit efficient wetting, penetrating, and detergency capabilities in industrial cleaning, pesticide emulsification, and daily chemical products. Technical Parameters Parameter ItemSpecification\/ValueParameter ItemSpecification\/Value AppearanceWhite to slightly yellow waxy solidIon TypeNonionic Active Content≥99%Solid Content≥99% HLB Value15-16Cloud Point88-95°C Hydroxyl Value52±3 mgKOH\/gAcid Value≤1.0 mgKOH\/g Saponification Value≤2.0 mgKOH\/gIodine Value≤2 gI₂\/100g pH Value (1% Aqueous Solution)5.0-7.0pH Value (5% Aqueous Solution)5.0-7.0 Moisture Content≤1.0%Free Alcohol≤1.0% Melting PointApproximately 40-50°CFlash Point (Closed Cup)>150°C DensityApproximately 1.0 g\/mLUnsaturation≤0.08 mol\/kg Kinematic Viscosity (1% Aqueous Solution, 25°C)Approximately 1-2 mm²\/sLow Shear Viscosity (1% Aqueous Solution, 25°C)Approximately 1.5 mPa·s Refractive Index (Molten State)nD25 Approximately 1.45-1.46Surce TensionApproximately 30-35 mN\/m Critical Micelle Concentration (CMC)Approximately 0.007% (w\/v)Penetration Power (1% Aqueous Solution)Approximately 200-300 seconds Foaming Property (1% Aqueous Solution, 50°C)Low foam, approximately 10-20mmAlkali ResistanceStable in concentrated alkali solutions SolubilityEasily soluble in water, ethanol, acetoneChemical StabilityResistant to acids, alkalis, salts, and hard water HygroscopicitySlightly hygroscopicAmine Value≤0.5 mgKOH\/g Tertiary Amine ContentNoneFree Phosphoric Acid≤0.1% Heavy Metals (as Pb)≤10 mg\/kgArsenic≤2 mg\/kg Molecular WeightApproximately 1100-1200Packaging Specification20kg woven bag Application Recommendations Peregal O-20 serves as an efficient leveling agent and dispersant in the textile dyeing and printing industry. The recommended dosage is generally 0.5%-2% (based on the weight of the dye liquor), effectively preventing color patches and spots. In pesticide formulations, it acts as an emulsifier for oil-in-water emulsions. The recommended dosage is 2%-5% of the total formula weight, significantly reducing the oil-water intercial tension and enhancing the wetting and spreading ability of the liquid. In daily chemical creams and lotions, as an O\/W emulsifier, the recommended dosage is 1%-3%, imparting a fine and stable texture to the product. In industrial and household liquid detergents, as a detergency component, the addition amount can be controlled at 1%-5%, quickly stripping and

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Property	Value
CAS No.	68439-49-6
Molecular Formula	RO(CH₂CH₂O)ₙH (R=C16-18, n=20)
Appearance	White to slightly yellow
Ionic Type	Nonionic
Avg. Molecular Weight	Approx. 1100-1200
Cloud Point	88-95
Active Content	≥99
pH Value(1%)	5.0-7.0
pH Value(5%)	5.0-7.0
Iodine Value	≤2
Solubility	Readily soluble in water, ethanol, acetone and other organic solvents
Surface Tension	~30-35
CMC	~0.007% (w/v)
Acid Value	≤1.0
Saponification Value	≤2.0
Hydroxyl Value	52±3
Moisture	≤1.0
Density	~1.0
Kinematic Viscosity	~1-2 (1%aq. soln., 25°C)
Refractive Index	nD25: ~1.45-1.46 (molten)
Flash Point	>150°C (closed cup)
Hygroscopicity	Slightly hygroscopic
Chemical Stability	Resistant to acids, alkalis, salts and hard water; chemically stable
Amine Value	≤0.5
Penetration	~200-300 s (1% aq., canvas disc method)
Foam Property	Low foam, ~10-20 mm (1% aq., 50°C, Ross-Miles)
Alkali Resistance	Alkali resistant; stable in concentrated alkali solutions
Unsaturation	≤0.08 mol/kg
Viscosity	~50-100 mPa·s (50°C, molten)
Melting Point	~40-50°C
Free Phosphoric Acid	≤0.1
Low Shear Viscosity	~1.5 mPa·s (1%aq. soln., 25℃)
Solid Content	≥99%
Free Alcohol	≤1.0%
Heavy Metal	≤10 mg/kg (as Pb)
Arsenic	≤2 mg/kg