Description

Didecyldimethylammonium is a high-purity quaternary ammonium compound (QAC) widely recognized for its potent antimicrobial and surfactant properties. This versatile chemical is essential for formulating effective disinfectants, sanitizers, and biocidal products that meet stringent global efficacy standards. It serves as a critical active ingredient for manufacturers in the hygiene, institutional cleaning, water treatment, and agricultural chemical industries seeking reliable, broad-spectrum performance.

Application

• Disinfectant & Sanitizer Formulations: A key active ingredient in hospital-grade disinfectants, surface cleaners, and hand sanitizers for its efficacy against bacteria, viruses, and fungi.
• Algaecides & Water Treatment: Used in industrial cooling towers, swimming pools, and recreational water systems to control algae and microbial growth.
• Agricultural & Wood Preservation: Incorporated into formulations to protect crops and timber from microbial degradation and spoilage.
• Textile & Leather Processing: Functions as a biocide and softening agent in the treatment of fabrics and hides.
• Oilfield & Industrial Biocides: Applied in drilling fluids, fracturing water, and process streams to prevent microbial-induced corrosion and spoilage.
• Household & Institutional Cleaning Products: Found in all-purpose cleaners, floor care products, and laundry sanitizers for long-lasting antimicrobial protection.

Basic Information

Product Name	Didecyldimethylammonium
CAS No.	20256-56-8
Molecular Formula	C22H48N+ (typically as chloride or other salts)
Molecular Weight	326.63 g/mol (for cation)
Synonyms	Didecyldimethylammonium ion; Didecyl dimethyl ammonium; DDA; Di-n-decyldimethylammonium; N,N-Dimethyldidecylammonium; Quaternary ammonium compound, didecyldimethyl-; Didecyl dimethyl ammonium chloride (common salt form); DDAC
EINECS	243-666-7

Quality Control

Our Didecyldimethylammonium products are manufactured under a strict quality management system to ensure batch-to-batch consistency and reliability. Each lot undergoes comprehensive analytical testing, including assay by HPLC, identification (IR), and control of key impurities. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to support your quality assurance and regulatory compliance needs.

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 and incompatible materials.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 1.0%
pH (10% solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 10 ppm

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