Cosmetic Ingredient

Phthalic Anhydride

INCI: PHTHALIC ANHYDRIDE
CAS 85-44-9 EC 201-607-5
1,3-Isobenzofurandione
Generally Safe
This ingredient has a good safety profile based on available data.
Purpose

Function

Monomer/intermediate used in copolymer synthesis; not typically a finished cosmetic ingredient
Profile

Properties

Silicone
Silicone free
Malassezia
Safe
Fungal Acne
Safe
Details

Description

1,3-Isobenzofurandione

Reference

Identifiers

CAS Number
85-44-9
EC Number
201-607-5
INCI
PHTHALIC ANHYDRIDE
Category
Cosmetic Ingredient
Updated
Apr 2, 2026