Acid Violet 43
molecular structure · PubChem
AKA: 4430-18-6, C.I. Acid Violet 43, CI 60730, Benzenesulfonic acid, Sodium salt (1:1), Murasaki 401
Synthetic
Acid
Not Clean
Sodium 4-[(9,10-dihydro-4-hydroxy-9,10-dioxo-1-anthryl)amino]toluene-3-sulphonate (CI 60730)
Formula
C21H14NNaO6S
Mol. Weight
431.40
CAS #
4430-18-6
Form
Powder
State
Solid
Functions
Hair Dyeing
Colors Hair
Traditional Use
A synthetic triphenylmethane dye developed in the early 20th century for cosmetic and textile applications. Created as part of the modern synthetic colorant industry for use in hair dyes and cosmetics.
EWG
9
CIR
Safe as used
Pregnancy
Caution
CIR Safety Findings
Not a Sensitizer
ewg-9
medical-approval
all-shades-safe
Concentration Guide
5%
0%7%
Reg. Limit
EU regulatory limit: 5%. 0,5 % Source: EU Cosmetics Regulation (EC) 1223/2009, Annex III (Restricted Substances), Entry 291.
Regulatory Agencies
🧂Conflict of interest.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Caution
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed4 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026 · 🧪 = conflict
Data: PubChem · CosIng · EWG · CIR