Description

(2,3-Dihydroxypropyl)(2-Hydroxydodecyl)Dimethylammonium Toluene-p-Sulphonate CAS NO 85896-21-5 is a cationic surfactant and phase-transfer catalyst featuring dual hydroxyl functionality and a tosylate counterion. Its unique amphiphilic structure—combining a long alkyl chain with polar hydroxypropyl and dimethylammonium groups—enables superior interfacial activity, emulsification stability, and compatibility with polar substrates. This compound is especially valued in specialty formulations requiring controlled reactivity, low-foaming performance, and enhanced wetting under mild conditions. It serves critical roles in high-performance industrial synthesis, functional coatings, and advanced personal care actives where conventional quaternary ammonium salts lack sufficient hydrophilicity or biodegradability.

Application

• Phase-transfer catalysis in nucleophilic substitution reactions (e.g., O-alkylation, C-alkylation) under aqueous-organic biphasic conditions
• Stabilizer and co-emulsifier in oil-in-water emulsions for high-solids architectural coatings and industrial maintenance paints
• Corrosion inhibitor additive in water-based metalworking fluids and cooling lubricants
• Surface modifier for silica nanoparticles and clay dispersants in nanocomposite polymer processing
• Viscosity enhancer and conditioning agent in sulfate-free shampoos and leave-on hair treatments
• Antistatic component in textile finishing formulations for synthetic fibers
• Carrier for active pharmaceutical ingredients (APIs) in transdermal delivery systems requiring enhanced skin permeation
• Biocidal synergist in combination with benzalkonium chloride or chlorhexidine in hospital-grade disinfectant concentrates

Basic Information

Product Name	(2,3-Dihydroxypropyl)(2-Hydroxydodecyl)Dimethylammonium Toluene-p-Sulphonate
CAS No.	85896-21-5
Molecular Formula	C23H43NO6S
Molecular Weight	457.65 g/mol
Synonyms	2-Hydroxydodecyl(dimethyl)(2,3-dihydroxypropyl)ammonium p-toluenesulfonate; Dimethyl(2-hydroxydodecyl)(2,3-dihydroxypropyl)ammonium tosylate; (2-Hydroxydodecyl)(2,3-dihydroxypropyl)dimethylammonium p-toluenesulfonate; DHDMP-DMAT; Tosylate salt of N,N-dimethyl-N-(2-hydroxydodecyl)-N-(2,3-dihydroxypropyl)ammonium; Hydroxydodecyl-dihydroxypropyl-dimethyl-ammonium tosylate; N,N-Dimethyl-N-(2-hydroxydodecyl)-N-(2,3-dihydroxypropyl)ammonium toluene-4-sulfonate; (2,3-Dihydroxypropyl)(2-hydroxydodecyl)dimethylammonium 4-methylbenzenesulfonate
EINECS	Contact for details

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) are available upon request. All batches conform to ISO 9001:2015 certified manufacturing protocols and meet applicable REACH registration requirements. Testing includes identity confirmation (IR and 1H NMR), assay purity (HPLC with UV detection), residual solvent analysis (GC-FID), and heavy metals screening (ICP-MS). Custom QC packages aligned with USP/EP monograph guidelines or customer-specific release criteria are available.

Storage

Preserve in a tightly closed container, protected from light. Store at room temperature (15–25°C) in a dry, well-ventilated area. Due to its hygroscopic nature, minimize exposure to ambient humidity; use desiccated storage conditions when handling in high-humidity environments. Avoid prolonged contact with stainless steel or aluminum surfaces during bulk storage.

Specification

Item	Specification
Appearance	Pale yellow to amber viscous liquid or waxy solid (melting point ~42–48°C)
Identification (IR)	Conforms to reference spectrum (characteristic peaks at 1175 cm⁻¹ [S=O], 1595 cm⁻¹ [aromatic C=C], 3350 cm⁻¹ [O–H])
Assay (by HPLC)	≥ 97.0%
Water Content (KF)	≤ 1.5%
pH (1% aqueous solution)	5.5 – 6.8
Residue on Ignition	≤ 0.3%
Heavy Metals (as Pb)	≤ 10 ppm
Free Amine (by titration)	≤ 0.5%

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