Description

Trimethyl(Octadecyl)Ammonium Isopropyl Sulphate is a quaternary ammonium salt surfactant with a long hydrophobic alkyl chain. This compound is valued for its potent cationic properties, which provide excellent emulsification, antistatic, and conditioning effects in various formulations. It is primarily needed by manufacturers in the personal care, textile processing, and industrial surfactant sectors for its reliable performance and compatibility.

Application

• Hair Conditioners & Cream Rinses: Acts as a primary cationic surfactant, providing excellent detangling, softness, and manageability to hair.
• Fabric Softeners: Imparts a soft, fluffy hand feel to textiles and reduces static cling.
• Antistatic Agents: Used in plastics, synthetic fibers, and electronics manufacturing to dissipate static charge.
• Emulsifier for O/W Systems: Facilitates the formation and stabilization of oil-in-water emulsions in cosmetic and industrial products.
• Biocide & Disinfectant Formulations: Serves as an active ingredient or potentiator in formulations targeting microbial growth.
• Phase Transfer Catalyst: Enhances reaction rates in organic synthesis by transferring ions between immiscible phases.
• Paper & Pulp Chemicals: Used as a softener, debonding agent, or retention aid in papermaking processes.
• Asphalt Emulsifiers: Promotes the formation of stable cationic asphalt emulsions for road construction and maintenance.

Basic Information

Product Name	Trimethyl(Octadecyl)Ammonium Isopropyl Sulphate
CAS No.	78480-18-9
Molecular Formula	C24H53NO4S
Molecular Weight	451.75 g/mol
Synonyms	Steartrimonium Isopropyl Sulfate; Octadecyltrimethylammonium Isopropyl Sulfate; Trimethylstearylammonium Isopropyl Sulfate; Quaternium-71; Arquad 18-IS; Cationic Surfactant C-18; N,N,N-Trimethyl-1-octadecanaminium Isopropyl Sulfate; Stearyl Trimethyl Ammonium Isopropyl Sulfate
EINECS	Contact for details

Quality Control

Our Trimethyl(Octadecyl)Ammonium Isopropyl Sulphate is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent purity, performance, and compliance with relevant industry standards. A comprehensive Certificate of Analysis (COA) detailing assay, identity, and impurity profiles is available for every shipment upon request.

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). This material is hygroscopic (moisture-sensitive); ensure containers are kept sealed to prevent absorption of atmospheric moisture which may affect product quality.

Specification

Item	Specification
Appearance	White to off-white paste or solid
Identification (IR)	Conforms to structure
Assay (Active Matter)	≥ 95.0 %
Water Content (KF)	≤ 3.0 %
pH (10% Solution)	5.0 - 8.0
Heavy Metals (as Pb)	≤ 20 ppm

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