CI 42051

CI 42051 is classed chemically as a triphenylmethane colour. It conforms to the formula:

CI 42051 is listed in the European Commission CosIng inventory under the functional category Colorant, with CAS number 3536-49-0 and EC number 222-573-8. CosIng records a restriction against it (IV/60 (CI 42051) II/1356 (Acid Blue 3; CI 42051: when used as a substance in hair dye products)), so check the corresponding Annex entry before formulating. In the free INCIDB sample it appears on 1 product label, reaching position 28 on Après-shampooing Blond lumière.

Sample products containing CI 42051

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 42051 in the full snapshot

import pyarrow.parquet as pq

ingredients = pq.read_table('ingredients.parquet').to_pandas()
target = ingredients[ingredients['inci_name'] == "CI 42051"]
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.