murphyAcid Violet 43
AKA: 4430-18-6, C.I. Acid Violet 43, CI 60730, Benzenesulfonic acid, Sodium salt (1:1), Murasaki 401
Synthetic
Acid
Not Clean
OriginAcid Violet 43 belongs to the triphenylmethane dye chemical family, synthesized from aromatic hydrocarbon precursors. It is produced through sulfonation and coupling reactions of triphenylmethane intermediates under controlled acidic conditions.
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
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Caution
Functions
Hair Dyeing
Colors Hair
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.
EWG
9
CIR
Safe as used
Pregnancy
Caution
CIR Safety Findings
Not a Sensitizer
1 study / 1 not sensitizing / plus 1 case report (CIR 725)
Not a Skin Irritant
2 studies / 2 not irritating / plus 1 case report (CIR 311 and 725)
Eye Irritant in Testing
1 study / 1 irritating / reactions slight (CIR 725)
Concentration Guide
0%50%100%
Reg. limit 0.5%
EU regulatory limit: 0.5%. Source: EU Cosmetics Regulation (EC) 1223/2009, Annex III (Restricted Substances), Entry 291.
Regulatory Agencies
🧂Conflict of interest.
Verified Jun 2026 · 🧪 = conflict
Data: PubChem · CosIng · EWG · CIR