CAS number
CAS 2682-20-4 2-methylisothiazol-3(2H)-one
CAS 2682-20-4 · CAS 26172-55-4 · CAS 55965-84-9 · EC 220-239-6 · EC 247-500-7 · Index No 613-326-00-9
Where CAS 2682-20-4 appears: every table entry that prints it among its identifiers, in the newest version of each act this record holds, and every recorded change to those entries. Many entries name a group of substances and print no number, so absence here is not absence from the law. Not legal advice.
Where it appears now
CLP Annex VI section 3, Index No 613-326-00-9
Last changed in the version in force , by Regulation (EU) 2018/1480, the act that change names · Annex VI on this site
| Index No | Chemical name | EC No | CAS No | Classification | Labelling | Specific Conc. Limits, M-factors and ATEs | Notes | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Hazard Class and Category Code(s) | Hazard statement Code(s) | Pictogram, Signal Word Code(s) | Hazard statement Code(s) | Suppl. Hazard statement Code(s) | ||||||
| 613-326-00-9 | 2-methylisothiazol-3(2H)-one | 220-239-6 | 2682-20-4 | Acute Tox. 2 Acute Tox. 3 Acute Tox. 3 Skin Corr. 1B Eye Dam. 1 Skin Sens. 1A Aquatic Acute 1 Aquatic Chronic 1 | H330 H311 H301 H314 H318 H317 H400 H410 | GHS05 GHS06 GHS09 Dgr | H330 H311 H301 H314 H317 H410 | EUH071 | Skin Sens. 1A; H317: C ≥ 0,0015 % M = 10 M = 1 | |
Cosmetics Regulation Annex V, Reference number 39
Last changed in the version in force , by Regulation (EU) No 1003/2014, the act that change names · Annex V on this site
| Reference number | Substance identification | Conditions | Wording of conditions of use and warnings | |||||
|---|---|---|---|---|---|---|---|---|
| Chemical name/INN | Name of Common Ingredients Glossary | CAS number | EC number | Product type, Body parts | Maximum concentration in ready for use preparation | Other | ||
| a | b | c | d | e | f | g | h | i |
| 39 | Mixture of 5-Chloro-2-methyl-isothiazol-3(2H)-one and 2-methylisothiazol-3(2H)-one | Methylchloroisothiazolinone (and) Methylisothiazolinone | 26172-55-4, 2682-20-4, 55965-84-9 | 247-500-7, 220-239-6 | Rinse-off products | 0,0015 % (of a mixture in the ratio 3:1 of 5-chloro-2-methylisothiazol 3(2H)-one and 2-methylisothiazol-3 (2H)-one) | ||
Cosmetics Regulation Annex V, Reference number 57
Last changed in the version in force , by Regulation (EU) 2017/1224, the act that change names · Annex V on this site
| Reference number | Substance identification | Conditions | Wording of conditions of use and warnings | |||||
|---|---|---|---|---|---|---|---|---|
| Chemical name/INN | Name of Common Ingredients Glossary | CAS number | EC number | Product type, Body parts | Maximum concentration in ready for use preparation | Other | ||
| a | b | c | d | e | f | g | h | i |
| 57 | 2-Methyl-2H-isothiazol-3-one | Methylisothiazolinone | 2682-20-4 | 220-239-6 | Rinse-off products | 0,0015 % | ||
Look up a number
Type a CAS or EC number, with or without its hyphens, or an Index No into the search box at the top of the page: it reads 50000 as CAS 50-00-0. Every number is also listed by act on the substances page.
Its history
· added · CLP Annex VI section 3, Index No 613-326-00-9
Recorded in the version in force , by Regulation (EU) 2018/1480, the act that change names. The change on its version page
| Identifiers | Index No | Chemical name | EC No | CAS No | Classification | Labelling | Specific Conc. Limits, M-factors and ATEs | Notes | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Hazard Class and Category Code(s) | Hazard statement Code(s) | Pictogram, Signal Word Code(s) | Hazard statement Code(s) | Suppl. Hazard statement Code(s) | |||||||
| Index No 613-326-00-9CAS 2682-20-4EC 220-239-6 | 613-326-00-9 | 2-methylisothiazol-3(2H)-one | 220-239-6 | 2682-20-4 | Acute Tox. 2 Acute Tox. 3 Acute Tox. 3 Skin Corr. 1B Eye Dam. 1 Skin Sens. 1A Aquatic Acute 1 Aquatic Chronic 1 | H330 H311 H301 H314 H318 H317 H400 H410 | GHS05 GHS06 GHS09 Dgr | H330 H311 H301 H314 H317 H410 | EUH071 | Skin Sens. 1A; H317: C ≥ 0,0015 % M = 10 M = 1 | |
· amended · Cosmetics Regulation Annex V, Reference number 57
Recorded in the version in force , by Regulation (EU) 2017/1224, the act that change names. The change on its version page
| Identifiers | Version | Reference number | Substance identification | Conditions | Wording of conditions of use and warnings | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Chemical name/INN | Name of Common Ingredients Glossary | CAS number | EC number | Product type, Body parts | Maximum concentration in ready for use preparation | Other | ||||
| a | b | c | d | e | f | g | h | i | ||
| Reference number 57CAS 2682-20-4EC 220-239-6 | Before | 57 | 2-Methyl-2H-isothiazol-3-one | Methylisothiazolinone | 2682-20-4 | 220-239-6 | Rinse-off products | |||
| After | 57 | 2-Methyl-2H-isothiazol-3-one | Methylisothiazolinone | 2682-20-4 | 220-239-6 | Rinse-off products | 0,0015 % | |||
· amended · Cosmetics Regulation Annex V, Reference number 57
Recorded in the version in force , by Regulation (EU) 2016/1198, the act that change names. The change on its version page
| Identifiers | Version | Reference number | Substance identification | Conditions | Wording of conditions of use and warnings | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Chemical name/INN | Name of Common Ingredients Glossary | CAS number | EC number | Product type, Body parts | Maximum concentration in ready for use preparation | Other | ||||
| a | b | c | d | e | f | g | h | i | ||
| Reference number 57CAS 2682-20-4EC 220-239-6 | Before | 57 | 2-Methyl-2H-isothiazol-3-one | Methylisothiazolinone | 2682-20-4 | 220-239-6 | 0,01 % | |||
| After | 57 | 2-Methyl-2H-isothiazol-3-one | Methylisothiazolinone | 2682-20-4 | 220-239-6 | Rinse-off products | 0,01 % | |||
· amended · Cosmetics Regulation Annex V, Reference number 39
Recorded in the version in force , by Regulation (EU) No 1003/2014, the act that change names. The change on its version page
| Identifiers | Version | Reference number | Substance identification | Conditions | Wording of conditions of use and warnings | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Chemical name/INN | Name of Common Ingredients Glossary | CAS number | EC number | Product type, Body parts | Maximum concentration in ready for use preparation | Other | ||||
| a | b | c | d | e | f | g | h | i | ||
| Reference number 39CAS 26172-55-4CAS 2682-20-4CAS 55965-84-9EC 220-239-6EC 247-500-7 | Before | 39 | Mixture of 5-Chloro-2-methyl-isothiazol-3(2H)-one and 2-methylisothiazol-3(2H)-one | Methylchloroisothiazolinone | 26172-55-4, 2682-20-4, 55965-84-9 | 247-500-7, 220-239-6 | 0,0015 % (of a mixture in the ratio 3:1 of 5-chloro-2-methylisothiazol 3(2H)-one and 2-methylisothiazol-3 | |||
| After | 39 | Mixture of 5-Chloro-2-methyl-isothiazol-3(2H)-one and 2-methylisothiazol-3(2H)-one | Methylchloroisothiazolinone (and) Methylisothiazolinone | 26172-55-4, 2682-20-4, 55965-84-9 | 247-500-7, 220-239-6 | Rinse-off products | 0,0015 % (of a mixture in the ratio 3:1 of 5-chloro-2-methylisothiazol 3(2H)-one and 2-methylisothiazol-3 (2H)-one) | |||
Sources
- CLP: every version the record holds; rows read from EUR-Lex consolidated version 02008R1272-20270101, in force 1 January 2027 (external, EUR-Lex)
- Cosmetics Regulation: every version the record holds; rows read from EUR-Lex consolidated version 02009R1223-20260518, in force 18 May 2026 (external, EUR-Lex)