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  • Docosyltrimethylammonium methyl sulphate CAS 81646-13-1 CAS no 81646-13-1 docosyl-trimethyl-azanium Docosyltrimethylammonium methyl sulfate

    Cas No: 81646-13-1

  • USD $ 3.5-5.0 / Kiloliter

  • 5 Kiloliter

  • 3000 Metric Ton/Month

  • Chemwill Asia Co., Ltd.
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81646-13-1 Usage


Docosyltrimethylammonium methyl sulphate, also known as BTMS, Behenyl Trimethyl Ammonium Methosulfate, and Docosyltrimethylammonium Methyl Sulphate, is a mild ingredient widely used in cosmetics and personal care products, as well as perfumes and fragrances. Since the mid-20th century, it has been recognized as an ideal component in shampoos and hair conditioning products due to its ability to moisturize and condition hair down to the roots. BTMS penetrates the hair shaft, promoting healthier hair that is easier to comb and maintain. While other chemical additives may offer similar properties, they often lack the gentleness of BTMS. Additionally, BTMS does not coat the scalp or leave excess chemical buildup on the scalp's surface, instead penetrating the hair up to the roots.


Used in Cosmetics and Personal Care Products:
Docosyltrimethylammonium methyl sulphate is used as a conditioning agent for its moisturizing and conditioning properties, which help maintain the health and manageability of hair.
Used in Perfumes and Fragrances:
BTMS is utilized as a fixative agent to enhance the longevity and stability of fragrances, ensuring that the scent remains consistent and long-lasting.
Used in Hair Care Products:
Docosyltrimethylammonium methyl sulphate is used as a key ingredient in shampoos and hair conditioning products for its ability to penetrate the hair shaft, providing deep moisturization and conditioning that leads to healthier, more manageable hair.

Flammability and Explosibility


Check Digit Verification of cas no

The CAS Registry Mumber 81646-13-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,6,4 and 6 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 81646-13:
131 % 10 = 1
So 81646-13-1 is a valid CAS Registry Number.



According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 19, 2017

Revision Date: Aug 19, 2017


1.1 GHS Product identifier

Product name docosyl(trimethyl)azanium,methyl sulfate

1.2 Other means of identification

Product number -
Other names 5SHP745C61

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:81646-13-1 SDS

81646-13-1Downstream Products

81646-13-1Relevant articles and documents

Hair rinse composition


, (2008/06/13)

A hair rinse composition having improved rinsing performance and a process specified to prepare the same. The composition according to the invention comprises (A) 0.05 to 0.5 wt % of cationic surface active agent, and (B) a higher alcohol or a glycerine mono fatty acid ester having a melting point not lower than 45° C. The ingredient (B) should be contained in an amount of 3 to 15 times by weight to ingredient (A). The composition is prepared by diluting a highly concentrated emulsified product containing 0.4 to 34 wt % of ingredient (A) and (B) in total with 1 to 20 times by weight to the emulsified product of water.

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