CI 42090

CI 42090 is classed chemically as a triphenylmethane colour. It conforms to the formula:

CI 42090 is listed in the European Commission CosIng inventory under the functional categories Colorant, Hair Dyeing, with CAS number 2650-18-2/ 37307-56-5/ 3844-45-9 and EC number -/ -/ 223-339-8. CosIng records a restriction against it (IV/63 (CI 42090) III/190 (Acid Blue 9; Acid Blue 9 Ammonium Salt; Acid Blue 9 Aluminum Lake)), so check the corresponding Annex entry before formulating. In the free INCIDB sample it appears on 16 product labels, reaching position 12 on Shampoing et gel douche sport.

Sample products containing CI 42090

Label positions from the free INCIDB sample. A lower position means the ingredient is declared earlier, i.e. present in a higher proportion.

Query CI 42090 in the full snapshot

import pyarrow.parquet as pq

ingredients = pq.read_table('ingredients.parquet').to_pandas()
target = ingredients[ingredients['inci_name'] == "CI 42090"]
print(target[['ingredient_id', 'functions', 'cas_number', 'is_common_allergen']])

The complete snapshot covers 18,583 products. Coverage of each enrichment column is published, both per distinct name and weighted by label occurrence — see the coverage table.