Description

Polyquaternium-1 is a polymeric quaternary ammonium compound widely recognized for its potent antimicrobial and preservative efficacy. This cationic polymer is highly valued for its ability to inhibit the growth of a broad spectrum of bacteria, fungi, and other microorganisms, making it a critical component in formulations requiring long-term stability. It is primarily utilized by manufacturers in the pharmaceutical, personal care, and ophthalmic solution industries where safe and effective preservation is paramount.

Application

• Ophthalmic Solutions & Contact Lens Care Products: Serves as a primary preservative in eye drops, artificial tears, and multi-purpose solutions for disinfecting contact lenses.
• Pharmaceutical Formulations: Used as an antimicrobial preservative in various sterile and non-sterile liquid dosage forms, including nasal sprays and topical solutions.
• Personal Care & Cosmetics: Incorporated into shampoos, conditioners, skin creams, and liquid soaps for its conditioning and preservative properties.
• Wet Wipes & Disinfectant Solutions: Acts as a key biocide in pre-moistened wipes and surface disinfectants for household and industrial use.
• Industrial Preservatives: Employed in water-based systems, adhesives, and coatings to prevent microbial spoilage.

Basic Information

Product Name	Polyquaternium-1
CAS No.	68518-54-7
Molecular Formula	(C9H20N+·Cl-)n
Molecular Weight	Contact for details
Synonyms	Poly[(dimethyliminio)-1,3-propanediyl(dimethyliminio)-1,6-hexanediyl dichloride]; Onamer M; Quaternium-40; Polyquaternium 1; PQ-1; Polyquat 1; Polymeric quaternary ammonium salt; 1,3-Propanediamine, N,N,N',N'-tetramethyl-, polymer with 1,6-dichlorohexane
EINECS	271-070-9

Quality Control

Our Polyquaternium-1 is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets high-purity standards suitable for pharmaceutical and personal care applications. Certificates of Analysis (COA) documenting key parameters such as assay, identification, and microbiological purity are available upon request to support your regulatory and quality assurance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Clear to pale yellow viscous liquid
Identification (IR)	Conforms
Assay (Nonaqueous Titration)	Min. 95.0%
pH (10% solution)	5.0 - 8.0
Water Content	Max. 5.0%
Residual Solvents	Meets ICH guidelines
Microbial Limit	Meets USP <61> & <62>

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