Get a Free 5ml Mini Now Free 5ml Mini With Every Order of The Mantle
Moumoujus

ALLYL SUCCINIC ANHYDRIDE.

Avoid CAS 7539-12-0 / NOT REPORTED

Allyl Succinic Anhydride (ASA) is a highly reactive chemical intermediate, primarily used to modify other ingredients like silicones or starches, rather than as a standalone active in skincare. It exists as a moisture-sensitive liquid.

Summary

Intermediate Modifying agent Coupling agent

Science

Mechanism of Action

As a cyclic anhydride, ASA acts as a coupling agent, reacting with water or alcohols to open its ring and provide free carboxyl groups. This enhances the hydrophobicity, film-forming durability, and sensory profile of modified polymers, and cross-links biocompatible hydrogels.

Research

Clinical Evidence

Medium confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Both
Optimal pH 7 – 8
0 7 14

Stability

Highly moisture-sensitive, reacting with water to form allyl succinic acid; optimal stability is maintained under inert gas in anhydrous or specific buffered hydrogel systems.

Conflicts

  • Water
  • Strong oxidizing agents
  • Primary and secondary amines
  • Alcohols (unless ring-opening is desired)

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk High

While its common derivatives (e.g., Aluminum Starch Octenylsuccinate) are 'safe as used,' pure ASA is classified as 'Toxic in contact with skin' (H311) and 'Causes skin irritation' (H315).

Your Skin

Skin Compatibility

No Normal
No Dry
No Oily
No Sensitive
Irritancy High
Comedogenicity Unknown

Our Assessment

Verdict

Avoid

Pure Allyl Succinic Anhydride is highly reactive and irritating, rendering it unsuitable for direct skin application; its value lies in creating safe, modified derivative ingredients.

Related

Similar Ingredients

Finding similar ingredients…