Description

Polyquaternium-28 is a high-performance, cationic polymeric quaternary ammonium compound, valued for its exceptional conditioning and film-forming properties. Its primary commercial value lies in providing long-lasting, substantive benefits to hair and skin by effectively depositing onto negatively charged surfaces. This makes it a critical ingredient for manufacturers in the personal care and cosmetic industries seeking to enhance product performance. Formulators rely on it to improve manageability, impart shine, and deliver superior conditioning effects in rinse-off and leave-on applications.

Application

• Hair Care Products: A key conditioning agent in shampoos, conditioners, hair masks, and styling products to reduce static, improve combability, and add shine.
• Skin Care & Cosmetics: Used in lotions, creams, and makeup formulations as a conditioning and film-forming agent to improve skin feel and product substantivity.
• Color Cosmetics: Enhances the wear and water resistance of mascaras, eyeliners, and foundations.
• Men's Grooming Products: Provides conditioning benefits in shaving creams, beard oils, and styling balms.
• Professional Salon Products: Formulated into high-performance treatments and styling aids for professional use.
• Leave-in Treatments: Ideal for serums and detangling sprays where long-lasting conditioning is required without buildup.

Basic Information

Product Name	Polyquaternium-28
CAS No.	131954-48-8
Molecular Formula	(C18H39N3O4)n · (C2H4O)m
Molecular Weight	Variable (Polymer)
Synonyms	Polyquaternium 28; Quaternium-52; Poly[(2-ethanaminium, N,N-diethyl-N-methyl-, chloride, polymer with 1-ethenyl-2-pyrrolidinone)]; Polyquat 28; PQ-28; Merquat 280; Copolymer of vinylpyrrolidone and quaternized dimethylaminoethyl methacrylate; Cationic copolymer VP/DMAEMA
EINECS	Contact for details

Quality Control

Our Polyquaternium-28 is manufactured under a strict quality management system. Each batch is tested to ensure it meets consistent specifications for critical parameters such as cationic charge density, viscosity, solids content, and residual monomers. Certificates of Analysis (COA) documenting these results are provided with every shipment to guarantee traceability and compliance with relevant cosmetic ingredient standards.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents. For long-term storage, ensure the container is properly sealed to prevent moisture absorption.

Specification

Item	Specification
Appearance	Clear to slightly hazy viscous liquid
Assay (Solid Content)	19.0 - 21.0 %
pH (as is, 10% solution)	6.0 - 8.0
Viscosity	Contact for details
Cationic Charge Density	Contact for details
Identification (IR)	Conforms

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.