Ester Base Quaternary Ammonium Salts, CAS: 91995-81-2

Ester base quaternary ammonium salts (esterquats, CAS 91995-81-2) are cationic surfactants widely used as the active ingredient in fabric softeners, hair conditioners and other personal care and industrial formulations. They offer excellent softening, antistatic and conditioning properties with a favorable environmental profile.

Specifications

Parameter Specification
Appearance White or light yellow paste
Actives 1.00-1.15 mmol/g
Solid content 87-93%
Acid value 6 mg/g max
Amine value 6 mg/g max
pH 2.0-4.0

Applications

  • Fabric softener: the standard active for rinse-cycle fabric softeners, delivering softness and antistatic effect.
  • Personal care: hair conditioner and rinse-off conditioning formulations.
  • Industrial: textile finishing, paper softening and emulsification applications.

Storage and Packaging

Store in a sealed container at room temperature, away from strong acids/bases and oxidizers. Protect from moisture. Supplied with COA and MSDS.

FAQ

What is an esterquat? An ester base quaternary ammonium salt – a quaternary ammonium surfactant containing ester linkages, used mainly in fabric softeners and conditioners.

Why are esterquats preferred over traditional quats? They offer comparable conditioning performance with better biodegradability and a lower environmental profile.

How should esterquats be handled? As a paste, warm slightly before dosing; follow the SDS for handling and storage.

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