CI 42090
CI 42090
Also known as Dihydrogen (ethyl)[4-[4-[ethyl(3-sulphonatobenzyl)]amino]-2'-sulphonatobenzhydrylidene]cyclohexa-2,5-dien-1-ylidene](3-sulphonatobenzyl)ammonium, disodium salt
CAS 2650-18-2EC -/ -/ 223-339-8PubChem CID 17559
What it is and how it is used
Acid Blue 9 lake; for coloring and brow tints. Non-permanent hair dye, watch for lake precipitation and batch shade variance.
Status in national inventories
| China · Inventory of existing ingredients | 00295 | 按照《化妆品安全技术规范》要求使用 |
|---|---|---|
| EU · CosIng | 32756 | 功能 COLORANT, HAIR DYEING · 限制 IV/63 (CI 42090) III/190 (Acid Blue 9; Acid Blue 9 Ammonium Salt; Acid Blue 9 Aluminum Lake) |
| ASEAN · Cosmetic Directive | ASEAN-IV/42090 | 附录 IV 准用着色剂 · Ref 42090 · CI 42090 · Blue |
Matched on the exact INCI name; salts, esters and synonyms may be missed. The latest official text prevails.
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Functions from EU CosIng and the China inventory; irritancy, comedogenicity and rating are our internal reading, not a regulatory conclusion. Structure and molecular data from PubChem.
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