CAS 25655-41-8 is associated with an ethoxylated nonylphenol-type surfactant, generally described as a poly(oxy-1,2-ethanediyl) derivative with a nonylphenyl group. I recommend treating this identity as a verification starting point rather than a complete product specification, because commercial grades may differ in ethylene oxide distribution, water content, active matter, and impurity profile. Before purchase or use, I would confirm the exact chemical name, concentration, appearance, viscosity, and regulatory status against the supplier’s current Safety Data Sheet (SDS) and Certificate of Analysis (COA). The European Chemicals Agency (ECHA) and the U.S. Environmental Protection Agency (EPA) both provide regulatory and hazard information that should be reviewed for the applicable market.
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For buyers, the most important issue is not the CAS number alone but whether the supplied grade matches the intended formulation and legal requirements. CAS 25655-41-8 may be considered for wetting, emulsification, detergency, dispersion, and interfacial-control applications, subject to product-specific documentation. I would also verify whether the product is supplied as a pure substance, a UVCB substance, or a commercial mixture before approving it for production.
This guide is intended for procurement teams, formulation chemists, quality managers, distributors, and industrial users evaluating CAS 25655-41-8. It is especially relevant when a buyer needs a nonionic surfactant or wetting additive but has incomplete information about grade, ethoxylation level, or regulatory suitability. I do not recommend using this article as a substitute for an SDS, technical data sheet, chemical risk assessment, or local regulatory review.
The guide is also useful for comparing suppliers. A reliable supplier should be able to explain the product’s chemical description, active content, packaging, storage conditions, testing method, and shipment documentation. If a supplier can provide only a CAS number without a current SDS and COA, I would consider the specification incomplete.
CAS 25655-41-8 belongs to a class of surface-active materials containing a hydrophobic nonylphenyl portion and hydrophilic ethoxy units. The balance between these portions affects water compatibility, wetting behavior, detergency, emulsification, foam tendency, and compatibility with other formulation ingredients. Because ethoxylated products can contain a distribution of chain lengths, the CAS number may not define one single molecular weight or one sharply fixed melting point.
For that reason, I would avoid assigning a universal molecular formula, molecular weight, cloud point, HLB value, pH, or viscosity to every product sold under this CAS number. These values can vary with ethoxylation distribution, manufacturing route, concentration, temperature, and test method. PubChem and ECHA should be used as reference points, while the supplier’s product-specific technical documentation should control purchasing and formulation decisions.
Authoritative references include the PubChem database, the ECHA chemicals information portal, and the EPA chemicals program. These sources are valuable for identity and regulatory screening, but they do not replace the SDS for a specific commercial grade.
Commercial nonionic surfactant grades may differ in the average number of ethylene oxide units. A lower ethoxylation level may provide stronger oil affinity, while a higher level may improve water compatibility, although actual performance depends on the complete formulation. I would request the supplier’s average ethoxylation range, distribution information where available, cloud point test method, and active-content specification.
Products may be supplied as liquids, pastes, or materials that become more viscous or solid-like at lower temperatures. A buyer should confirm whether the quoted grade is supplied at 100% active material or diluted with water or another carrier. Useful purchasing specifications may include active matter in %, viscosity in mPa·s, water content in %, color in Hazen or APHA units, and density in g/cm³.
I recommend requesting at least five documents or data points before approval: the current SDS, technical data sheet, COA, batch or lot number, and country-of-origin information. For regulated applications, I would also ask for statements covering REACH, TSCA, inventory status, restricted substances, and intended-use limitations. The exact document set should match the destination country and the end-use sector.
Ethoxylated nonylphenol-type surfactants have historically been used in industrial cleaning, wetting, emulsification, dispersion, textile processing, agricultural formulations, metalworking products, coatings, and other technical formulations. Their value comes from reducing interfacial tension and helping water contact hydrophobic surfaces. However, performance should be confirmed through a controlled laboratory trial rather than assumed from the CAS number.
In industrial cleaning, the material may support wetting and soil removal when combined with builders, solvents, alkalinity sources, or other surfactants. I would evaluate cleaning efficiency, foam profile, residue, rinsability, and compatibility with the substrate. A practical screening program may compare formulations at several dosage levels, such as 0.5%, 1.0%, and 2.0%, while recording cleaning performance and visual residue.
In coatings or dispersion systems, the surfactant may help stabilize interfaces and improve spreading. The formulation team should measure phase separation, particle size, viscosity, surface appearance, and storage stability at defined intervals. A minimum screening period of 7 days can reveal early instability, but longer validation may be necessary for commercial release.
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Textile and process users may evaluate wetting speed, bath stability, foam, fabric compatibility, and ease of rinsing. Process conditions such as temperature, water hardness, electrolyte concentration, and agitation can materially change results. I would document these variables in the test report instead of comparing supplier samples only by product name.
The applicable hazards depend on the supplied grade, concentration, impurities, and exposure route. Possible concerns for surfactant products can include eye irritation, skin irritation, environmental toxicity, and aquatic persistence or degradation behavior; the actual classification must be taken from the current SDS for the product being purchased. I recommend reviewing SDS Sections 2, 3, 8, 9, 10, 12, and 15 before handling or approving the material.
Workers should follow the supplier’s recommended personal protective equipment, ventilation requirements, spill controls, and first-aid instructions. A facility may need chemical-resistant gloves, protective eyewear, protective clothing, and local exhaust ventilation, but the final selection should be based on the SDS and the site risk assessment. I would also maintain written procedures for receiving, transferring, labeling, and disposing of the material.
Environmental compliance requires particular attention because some nonionic surfactants may face restrictions or substitution pressure in specific regions and applications. The OECD provides internationally recognized guidance for chemical testing and environmental assessment, while ECHA publishes regulatory information for substances placed on the European market. Buyers should check applicable concentration limits, use restrictions, wastewater requirements, and customer-specific restricted-substance lists before placing an order.
First, I would define the exact application, target market, formulation type, expected dosage, and contact conditions. The purchasing request should state whether the product is for industrial cleaning, coatings, textiles, agriculture, metalworking, or another use. This prevents a technically similar but legally unsuitable grade from entering the qualification process.
| Specification | Why It Matters | Typical Buyer Action |
|---|---|---|
| Active matter (%) | Determines effective dosage and batch consistency | Set an agreed range and test method |
| Viscosity (mPa·s) | Affects pumping, blending, and filling | Confirm test temperature, such as 25°C |
| Water content (%) | Changes concentration and storage behavior | Request a COA result for every batch |
| Color (Hazen/APHA) | Important for light-colored formulations | Specify an agreed maximum value |
| Cloud point (°C) | Helps assess temperature-dependent behavior | Confirm the test medium and method |
| Packaging size (kg) | Affects handling, freight, and storage | Compare drums, IBCs, and bulk options |
These values should not be treated as universal specifications for CAS 25655-41-8. I use them as a structured checklist for comparing quotations and samples. The supplier must confirm the actual limits, test methods, and batch-to-batch tolerances in writing.
Before approving a bulk order, I would test the candidate grade with the actual raw materials, process water, packaging materials, and operating temperature. Important observations include separation after 24 hours, 7 days, and longer storage periods; viscosity change in mPa·s; foam height in mm; and appearance after temperature cycling. These tests should be designed by the customer’s technical team because the correct acceptance criteria vary by application.
The price of CAS 25655-41-8 may depend on active content, ethoxylation profile, packaging, order volume, production schedule, freight route, and destination regulations. I would request a quotation based on a defined quantity, such as 25 kg, 200 kg, or 1,000 kg, rather than comparing prices without a unit basis. The quote should also clarify whether the price is per net kilogram, whether packaging is included, and which Incoterm applies.
Minimum order quantity and lead time should be confirmed before technical approval. A supplier may offer a sample within several business days but require additional production time for a full container or customized specification. I recommend confirming sample quantity in kg, production lead time in days, shelf life in months, and remaining shelf life at delivery.
Sourcing risk increases when the product is available from only one facility, has inconsistent documentation, or is subject to regional restrictions. I would reduce this risk by qualifying a backup source, retaining an approved reference sample, and defining change-notification requirements. Any change in raw material source, manufacturing location, formulation, packaging, or test method should be communicated before implementation.
As a chemical manufacturer and export supplier, Yuking can support buyers by organizing product identification, SDS and COA review, sample coordination, packaging confirmation, and shipment documentation for qualified materials. I would still recommend that every customer approve the final grade through its own laboratory and regulatory process. Product availability, MOQ, lead time, and documentation should be confirmed for the specific destination and application before an order is placed.
CAS 25655-41-8 may be suitable for selected industrial surfactant applications, but the CAS number alone is not enough to approve a material. I recommend confirming the exact chemical description, grade, active content, physical specifications, SDS classification, regulatory status, packaging, MOQ, and lead time. The next practical step is to send the supplier a written specification and application description, then request a sample, COA, SDS, and commercial quotation for evaluation.
Yuking can assist qualified B2B buyers with specification clarification, sample coordination, export documentation, and supply planning for CAS 25655-41-8-related products. Please provide your target application, required quantity in kg, destination country, preferred packaging, and key technical limits so the appropriate grade and commercial terms can be reviewed accurately.
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