1831MS Steartrimonium Methosulfate CAS18684-11-2 Emulsifier

Steartrimonium Methosulfate (1831MS) – Advanced Mild Cationic Surfactant & Conditioning Agent

Product Overview
Steartrimonium Methosulfate (1831MS) is a high-purity cationic surfactant in white to faintly yellow granular solid form (70-75% active content), specifically engineered for hair care and fiber treatment applications. As a methosulfate-based quaternary ammonium compound, it delivers superior conditioning and antistatic effects with enhanced mildness compared to conventional chloride-based counterparts. Its unique molecular structure enables strong electrostatic interaction with negatively charged surfaces like hair and textiles, making it an ideal choice for repair-focused formulations.

INCI NAME:Steartrimonium Methosulfate

Product features and efficacy

Key Technology & Mechanism

Electrostatic Neutralization: Positively charged quaternary ammonium groups bind to negative sites on hair fibers, eliminating static electricity and reducing friction by up to 60%.

Multi-Layer Film Formation: Creates a flexible cationic film (0.2-0.5μm) that fills cuticle gaps and seals moisture within damaged hair structures.

Synergistic Enhancement: Boosts silicone oil deposition by 40% and improves protein adhesion to hair shafts through charge-mediated binding.

Performance Benefits
 Hair Conditioning Excellence

Improves wet combability by 65% (Diastron MHT-168EX)

Enhances hair shine index by 45% (650nm light reflectance)

Reduces blow-drying damage by 30% (TGA analysis)

Barrier Protection

Provides UV radiation resistance (blocks 85% of UVA)

Forms heat-protective layer stable up to 180°C

Formulation Advantages

Broad pH compatibility (5.0-8.0)

Cold-process soluble (dissolves completely at 50°C)

Compatible with anionic systems through complex formation

application

Hair care products: Reference dosage: 0.5-3.0%

Hair dye products: Reference dosage: 1.0-3.0%

Perm products: Reference dosage: 1.0-3.0%

Formula application:

Hair care products: hair conditioner, hair mask, hair oil cream, color filling hair oil cream

Hair dye products: permanent hair dye cream, semi permanent hair dye waxing

Perm products: ion perm, cold perm solution, pre perm care solution

Packaging and Storage:

25kg/pack, stored in a ventilated and cool place.