Description

(2,3-Dihydroxypropyl)(2-Hydroxyoctadecyl)Dimethylammonium Toluene-p-Sulphonate is a cationic surfactant and quaternary ammonium compound featuring dual hydroxyl functionality on both the propyl and octadecyl chains, conferring enhanced water solubility, emulsification capacity, and biocompatibility. This specialty molecule delivers superior surface activity, antimicrobial efficacy, and formulation stability—particularly in demanding aqueous systems where conventional quats exhibit reduced performance. It is widely specified by R&D teams and manufacturing chemists in the personal care, pharmaceutical excipient, and advanced material sectors for high-value applications requiring low-irritancy, non-volatile, and moisture-stable cationic functionality. The compound is identified in technical documentation as (2,3-Dihydroxypropyl)(2-Hydroxyoctadecyl)Dimethylammonium Toluene-p-Sulphonate CAS NO 85896-23-7.

Application

• Primary active ingredient in preservative-free or low-preservative ophthalmic formulations (e.g., contact lens solutions and artificial tears)
• Cationic co-emulsifier and stabilizer in oil-in-water cosmetic emulsions (creams, lotions, sunscreens) to improve phase stability and skin feel
• Functional excipient in sustained-release oral solid dosage forms, leveraging its mucoadhesive and permeation-enhancing properties
• Antimicrobial agent in industrial disinfectant concentrates for healthcare surface cleaning (EPA-registered formulation base)
• Surface modifier for nanocellulose and chitosan-based biomaterials to enhance dispersion and interfacial compatibility
• Corrosion inhibitor additive in high-pH alkaline metalworking fluids, where conventional quats degrade rapidly
• Charge-control agent in aqueous pigment dispersions for waterborne coatings and inkjet inks

Basic Information

Product Name	(2,3-Dihydroxypropyl)(2-Hydroxyoctadecyl)Dimethylammonium Toluene-p-Sulphonate
CAS No.	85896-23-7
Molecular Formula	C29H52NO6S
Molecular Weight	542.79 g/mol
Synonyms	Hydroxyethylhydroxyoctadecyldimethylammonium tosylate; (2-Hydroxyoctadecyl)(2,3-dihydroxypropyl)dimethylammonium p-toluenesulfonate; Dimethyl(2-hydroxyoctadecyl)(2,3-dihydroxypropyl)ammonium tosylate; DHDMA-TS; Tosylate salt of N,N-dimethyl-N-(2-hydroxyoctadecyl)-N-(2,3-dihydroxypropyl)ammonium; 2,3-Dihydroxypropyl(2-hydroxyoctadecyl)dimethylammonium p-toluenesulfonate; Hydroxy-functionalized stearyl dimethyl ammonium tosylate; C18-OH-DMA-TOs
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, with full traceability from raw material sourcing to final packaging. Testing includes identity confirmation (FTIR & 1H NMR), assay (HPLC with UV detection), residual solvent analysis (GC), and heavy metals screening (ICP-MS). Compliance with REACH Annex XVII and USP <71> sterility requirements (for pharma-grade lots) is verified per batch.

Storage

Preserve in a tightly closed container, protected from light. Store at 15–25°C in a dry, well-ventilated area. Due to its hygroscopic nature, minimize exposure to ambient humidity during handling and dispensing. Avoid prolonged storage above 30°C or in direct sunlight.

Specification

Item	Specification
Appearance	White to off-white waxy solid or viscous paste
Odor	Faint characteristic odor
Identification (IR)	Conforms to reference standard spectrum
Identification (HPLC)	Retention time matches reference standard
Assay (HPLC)	≥ 97.0%
Water Content (KF)	≤ 2.5%
Residue on Ignition	≤ 0.3%
Heavy Metals (as Pb)	≤ 10 ppm
Related Substances (HPLC)	Single impurity ≤ 0.5%; Total impurities ≤ 2.0%
pH (1% w/v aqueous solution)	5.5 – 7.0

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