CAS 25086-89-9: Identity, Uses, and Supplier Specification Guide

CAS 25086-89-9 identifies VP/VA Copolymer, a copolymer of vinylpyrrolidone and vinyl acetate used in applications such as hair styling products. In personal-care formulations, it is valued primarily for its film-forming and styling functions. The CAS number identifies the polymer family, but it does not by itself specify a particular grade, composition ratio, physical form, or performance profile. Buyers should therefore compare a supplier’s grade-specific specification and technical documents before selecting material.

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Key Takeaways

• CAS 25086-89-9 is associated with VP/VA Copolymer, also described as vinylpyrrolidone/vinyl acetate copolymer.
• It is used in hair styling formulations where film formation and hold are relevant performance goals.
• Grade details such as composition, form, solubility, and test methods should be verified with the supplier rather than inferred from the CAS number.
• Request a current specification, certificate of analysis, safety data sheet, and a sample for evaluation before placing a production order.

Who This Guide Is For

This guide is intended for cosmetic manufacturers, formulators, distributors, and procurement teams evaluating CAS 25086-89-9 for commercial use. It is especially useful when a project brief names a CAS number but does not identify the required grade or finished-product performance. Research and quality teams can also use it to prepare supplier questions and define a practical evaluation plan. The information is general guidance; the supplier’s current documentation and the buyer’s own testing should guide final decisions.

Identity and Basic Context

What the CAS Number Identifies

CAS 25086-89-9 is commonly used to identify VP/VA Copolymer, a polymer made from vinylpyrrolidone and vinyl acetate monomer units. The INCI name used in cosmetic ingredient contexts is VP/VA Copolymer. Because it is a copolymer, the material is not described by one simple repeating-unit ratio that can be assumed for every commercial product. Different supplier grades may have different characteristics, so the CAS number should be treated as an identity reference rather than a complete purchasing specification.

What It Does in Formulations

VP/VA Copolymer is commonly selected as a film former and hair styling polymer. A film-forming ingredient can contribute to the structure and feel left on hair after a product dries, while the formulation as a whole determines factors such as hold, flexibility, and residue. Performance depends on the selected grade, concentration, other ingredients, application method, and drying conditions. Buyers should evaluate the polymer in the intended formula rather than assume that one grade will behave identically across all product types.

Types, Forms, and Specification Overview

Commercial VP/VA Copolymer may be supplied in different physical forms or grade options, depending on the manufacturer and product design. A buyer may encounter a solid material or a prepared solution, but availability and details must be confirmed for the specific supplier. These forms can affect handling, incorporation, storage, and shipping considerations. Do not treat a product description from one supplier as a universal specification for CAS 25086-89-9.

Request the supplier’s actual specification rather than relying on generic online ranges. If a parameter such as viscosity, solids content, pH, or molecular-weight information matters to your process, ask how it is measured and whether it is a release test, a typical value, or a general description. These distinctions are important because values and test methods can differ between grades. A certificate of analysis should be reviewed against the agreed purchase specification for the lot being supplied.

Matching the Grade to an Application

For hair sprays, gels, mousses, and other styling products, begin by defining the desired styling effect and the formula’s processing requirements. Consider the balance between hold, flexibility, feel, drying behavior, and ease of incorporation rather than selecting on polymer identity alone. The finished product should be evaluated for the intended packaging and consumer-use conditions. A grade suitable for one format may not be the best option for another.

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Build a Practical Screening Plan

For an early laboratory screen, a formulator might evaluate a starting range such as 1–5 wt% polymer in the finished formula, adjusting only after checking supplier guidance and the product brief. This is an illustrative development range, not a supplier specification or a guaranteed effective dosage. Prepare samples using controlled conditions; for example, a room-temperature screening environment of 20–25 °C can help make comparisons more consistent. Record the grade, batch, addition sequence, and observed results for every trial.

Assess the formulation after a defined conditioning period, such as 24 hours, while recognizing that this is a suggested comparison point rather than a universal test requirement. Check appearance, uniformity, handling, drying, film feel, and performance using methods relevant to the product. If the application is sensitive to humidity, packaging, or long-term storage, include those conditions in a separate evaluation plan. Confirm any proposed test method with your technical and quality teams.

Buyer Selection Framework

1. Define the Finished-Product Requirements

Write down the application, desired styling result, physical format, processing constraints, and any internal quality requirements. Identify properties that are mandatory and those that can be optimized during formulation. This prevents a buyer from comparing grades on a single data-sheet value that may not predict finished-product performance. Share the brief with the supplier so that recommendations can be tied to the actual use case.

2. Compare Documentation and Test Methods

Review the specification and confirm that each listed parameter includes a clear limit or definition where relevant. Ask whether values are guaranteed limits or typical information, and request the analytical method used for important quality tests. Check that the CAS number and ingredient name are consistent across the product specification, COA, and SDS. If your market or product category has specific regulatory or customer requirements, verify them with the appropriate compliance team.

3. Confirm Commercial and Supply Details

Price, minimum order quantity, packaging, and lead time are quote-specific and may depend on grade, order size, destination, and current availability. Ask for these details in writing, including whether the quoted price covers the requested packaging and delivery terms. For qualification, confirm sample availability and the expected process for moving from a sample to a production lot. Avoid basing a supply decision on an unconfirmed estimate.

Supplier Evaluation Checklist

• Can the supplier confirm the product’s CAS number, INCI name, grade, and supplied form?
• Will the supplier provide a current technical specification, SDS, and lot-specific COA?
• Are test methods and specification limits available for the parameters important to your application?
• Can the supplier clarify packaging options, MOQ, lead time, and sample arrangements for your destination?
• Is there a technical contact available to discuss grade selection and formulation questions?
• Can the supplier explain how proposed changes to grade or production lot will be communicated?

Working with NKY Group

When evaluating CAS 25086-89-9, NKY Group can discuss your target application, required documentation, and purchasing criteria as part of an inquiry. To make the discussion efficient, provide your intended product format, estimated annual or trial quantity, destination, and any specification limits that are important to your team. We can then confirm the relevant product and commercial details available for your request. Ask for current grade documentation and a quotation before making a purchasing decision.

Conclusion and Next Steps

CAS 25086-89-9 identifies VP/VA Copolymer, a vinylpyrrolidone/vinyl acetate copolymer used in hair styling applications for film-forming and styling functions. The CAS number alone does not establish grade-specific composition, physical form, performance, or commercial terms. To select a suitable material, define the intended formulation, compare current supplier specifications and test methods, and evaluate a sample under relevant conditions. Contact NKY Group with your application and sourcing requirements to request product documentation, availability, and a B2B quotation.