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Canonical INCI monograph

METHYLCHLOROISOTHIAZOLINONE

Not on the EU Annex III list

Methylchloroisothiazolinone is the heterocyclic organic compound that conforms to the formula:

METHYLCHLOROISOTHIAZOLINONE is listed in the European Commission CosIng inventory under the functional category Preservative, with CAS number 26172-55-4 and EC number 247-500-7. CosIng records a restriction against it (V/39), so check the corresponding Annex entry before formulating. In the free INCIDB sample it appears on 14 product labels, reaching position 14 on body wash.

CAS REGISTRY NUMBER
26172-55-4
EC NUMBER
247-500-7
COSING FUNCTIONS
Preservative
COSING RESTRICTION
V/39

Sample products containing METHYLCHLOROISOTHIAZOLINONE

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

PRODUCT LABEL POSITION
Shampooing soin aux huiles d'Olive Karité Argan #24
Gel douche revigorant à l'abricot et à l'orange #15
Gel shampooing douche Agrumes #20
Shampooing antipelliculaire + après-shampooing 2 in 1 anti-chute #33
Shampooing antipelliculaire Instant Dry Scalp Care #28
Charlotte Douche Fraise & Myrtille #19
Après-shampooing Blond lumière #18
Vitalité Brillance Shampooing #22

Query METHYLCHLOROISOTHIAZOLINONE in the full snapshot

import pyarrow.parquet as pq

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

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