Description

(Carboxymethyl)Dimethyl(1-Oxooctadecyl)Ammonium Hydroxide is a high-purity quaternary ammonium compound, also known as stearamidopropyl betaine, valued for its excellent surfactant and conditioning properties. This amphoteric compound offers superior mildness, foam stability, and compatibility with other ionic ingredients, making it a critical component in demanding formulations. It is essential for manufacturers in the personal care, cosmetics, and industrial cleaning sectors seeking high-performance, skin-friendly ingredients.

Application

• Personal Care & Cosmetics: Primary surfactant and conditioner in shampoos, body washes, facial cleansers, and baby care products for its mildness and rich lather.
• Hair Care Formulations: Key ingredient in conditioners, hair masks, and leave-in treatments to provide detangling, softness, and static control.
• Skin Care Products: Used in moisturizing creams, lotions, and sensitive skin formulations for its emulsifying and skin-conditioning benefits.
• Industrial & Institutional Cleaners: Acts as a surfactant and viscosity modifier in hard surface cleaners, car wash solutions, and industrial degreasers.
• Textile & Leather Processing: Employed as a softener, antistatic agent, and dyeing assistant in fabric and leather treatment baths.
• Oilfield Chemicals: Utilized in drilling muds and completion fluids as a foaming agent and corrosion inhibitor.

Basic Information

Product Name	(Carboxymethyl)Dimethyl(1-Oxooctadecyl)Ammonium Hydroxide
CAS No.	66451-68-1
Molecular Formula	C23H48N2O3
Molecular Weight	400.64 g/mol
Synonyms	Stearamidopropyl Betaine; N-(Carboxymethyl)-N,N-dimethyl-3-[(1-oxooctadecyl)amino]-1-propanaminium hydroxide, inner salt; 3-Stearamidopropyl Dimethyl Betaine; SAP Betaine; Octadecanamidopropylbetaine; Amido Betaine C; Tego® Betain S; Amphosol® SB
EINECS	266-363-1

Quality Control

Our (Carboxymethyl)Dimethyl(1-Oxooctadecyl)Ammonium Hydroxide is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for identity, purity, and performance. Certificates of Analysis (COA) documenting key parameters such as assay, pH, and active matter content are provided to guarantee consistent quality and traceability for your production needs.

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). Keep away from strong oxidizing agents. The product is hygroscopic (moisture-sensitive); ensure containers are sealed after each use to prevent moisture absorption.

Specification

Item	Specification
Appearance	White to pale yellow paste or solid
Identification (IR)	Conforms to structure
Assay (Active Matter)	≥ 30.0 % (or as specified)
pH (10% Solution)	4.5 - 7.5
Color (Gardner)	≤ 3
Free Amine	≤ 1.0 %
Moisture Content	≤ 1.0 %

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