Methylchloroisothiazolinone (and) Methylisothiazolinone in EU cosmetics: Annex V, entry 39
Methylchloroisothiazolinone (and) Methylisothiazolinone: the maximum concentrations and conditions are in the entry below. Annex V, entry 39, consolidated 18 May 2026.
- Annex
- V: List of preservatives allowed in cosmetic products
- Reference number
- 39
- Chemical name/INN
- Mixture of 5-Chloro-2-methyl-isothiazol-3(2H)-one and 2-methylisothiazol-3(2H)-one
- Name of Common Ingredients Glossary
- Methylchloroisothiazolinone (and) Methylisothiazolinone (17)
- CAS number
- 26172-55-4, 2682-20-4, 55965-84-9
- EC number
- 247-500-7, 220-239-6
- Version
- Consolidated version of 18 May 2026
- Official source
- Regulation (EC) No 1223/2009, consolidated text
Official wording: restrictions
- Product type, body parts: Rinse-off products | Maximum concentration in ready for use preparation: 0,0015 % (of a mixture in the ratio 3:1 of 5-chloro-2-methylisothiazol 3(2H)-one and 2-methylisothiazol-3 (2H)-one)
Notes referred to in this entry
- (17) Methylisothiazolinone is also regulated in entry 57. The two entries are mutually exclusive: the use of the mixture of Methylchloroisothiazolinone (and) Methylisothiazolinone is incompatible with the use of Methylisothiazolinone alone in the same product.
Same CAS number in other entries of the annexes
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