Description

Didecyl Dimethylammonium Hydroxide is a quaternary ammonium compound (QAC) primarily supplied as a solution in water or alcohol, functioning as a potent cationic surfactant and biocide. Its high efficacy as a phase-transfer catalyst and antimicrobial agent makes it a critical intermediate and active ingredient for demanding industrial and institutional formulations. This product is essential for manufacturers in the chemical synthesis, disinfectant, and specialty cleaning sectors who require a reliable, high-performance quaternary ammonium base.

Application

• As a phase-transfer catalyst (PTC) in organic synthesis reactions, particularly for alkylations and esterifications.
• Active ingredient in industrial and institutional disinfectants and sanitizers (EPA-registered formulations).
• Algicide and bactericide in cooling water treatment, pulp/paper mills, and oilfield applications.
• Key component in fabric softeners and antistatic agents for the textile industry.
• Emulsifier and stabilizer in the production of polymer emulsions and specialty coatings.
• Biocide in metalworking fluids to control microbial growth and extend fluid life.
• Raw material for the synthesis of other quaternary ammonium salts with tailored properties.

Basic Information

Product Name	Didecyl Dimethylammonium Hydroxide
CAS No.	23381-52-4
Molecular Formula	C22H48N+ OH-
Molecular Weight	339.63 g/mol (Cation)
Synonyms	Didecyldimethylammonium hydroxide; DDAOH; N,N-Dimethyldidecylammonium hydroxide; Quaternary ammonium compound, didecyldimethyl-, hydroxide; Didecyl dimethylamine hydroxide; Bardac 2050 (related trade name for chloride salt); DDAC hydroxide form
EINECS	Contact for details

Quality Control

Our Didecyl Dimethylammonium Hydroxide is manufactured under a cGMP-compliant quality management system. Every batch is tested to ensure it meets stringent specifications for identity, purity, and concentration. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical properties is provided with each shipment to guarantee traceability and compliance for your regulatory 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 acids and incompatible materials. As a strong base/organic solvent solution, handle with appropriate personal protective equipment.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (as active QAC)	≥ 50.0 % (or as per customer grade)
Solvent (Balance)	Isopropanol / Water (specified ratio)
pH (as supplied)	12.0 - 14.0
Water Content (Karl Fischer)	≤ 5.0 %
Heavy Metals (as Pb)	≤ 10 ppm

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