Behentrimonium methosulfate and cetearyl alcohol conditioning wax

CAS No.

81646-13-1 (behentrimonium methosulfate) / 67762-27-0 (cetearyl alcohol)

Synonyms

BTMS conditioning wax; Behentrimonium methosulfate emulsifying wax; also listed as Behentrimonium Methosulfate (BTMS)

Molecular formula

Not applicable — polymeric or multi-component material

Molecular weight

Not specified in the supplied record.

Grade

Cosmetic grade

Packaging

Sealed PE bag / Kraft paper bag with PE liner
SKU FM-308 Category

Chemical Product Description & Applications

Behentrimonium methosulfate is a cationic conditioning surfactant whose long C22 chain promotes adsorption and lubricity on hair. In a common commercial conditioning-wax format, it is combined with cetearyl alcohol. The quaternary ammonium component supports detangling and reduction of static, while the fatty-alcohol carrier supplies body and helps structure the emulsion.

This solid wax blend is used in heated conditioning-emulsion manufacture. It is different from concentrated behentrimonium methosulfate supplied without the fatty-alcohol carrier, and the blend’s full addition level is not the same as its cationic-active level. Despite the methosulfate counterion in its name, it is a conditioning quaternary ammonium ingredient rather than an anionic sulfate cleansing surfactant.

Typical Applications

  • Rinse-off hair conditioners: Used as a combined conditioning and emulsifying base in cream conditioners. The cationic component deposits on hair to improve combing, while the wax structure supports a uniform creamy product.
  • Hair masks and intensive treatments: Used in richer conditioning emulsions containing oils or additional emollients. It contributes slip and detangling while helping build the substantial texture expected in a hair mask.
  • Leave-in conditioning creams: Used in appropriately balanced leave-on hair emulsions for manageability and static control. The blend provides a cationic emulsion framework into which other conditioning ingredients can be incorporated.

Specifications

Parameter Specification Test Method
Appearance White to pale yellow liquid, paste or flakes Visual inspection
Identification Consistent with authenticated reference FTIR fingerprint comparison
Cationic active matter 48.0-52.0% w/w Two-phase anionic titration
Free amine ≤1.0% w/w Potentiometric titration
pH, 1% aqueous dispersion at 25 C 4.0-7.0 Calibrated pH meter
Total aerobic count ≤100 CFU/g Plate count with surfactant neutralization

Specifications describe the standard grade. Tolerance, test method and documentation package are confirmed per order.

Documents & Handling

Packaging

Sealed PE bag / Kraft paper bag with PE liner

What You Get With This Product

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CoA

Certificate of Analysis

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TDS

Technical Data Sheet

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SDS

Safety Data Sheet

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