EC number
EC 203-550-1 4-methylpentan-2-one
CAS 108-10-1 · EC 203-550-1 · Index No 606-004-00-4
Where EC 203-550-1 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 606-004-00-4
Last changed in the version in force , by Regulation (EU) 2021/849, 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) | ||||||
| 606-004-00-4 | 4-methylpentan-2-one; isobutyl methyl ketone | 203-550-1 | 108-10-1 | Flam. Liq. 2 Carc. 2 Acute Tox. 4 STOT SE 3 Eye Irrit. 2 | H225 H351 H332 H336 H319 | GHS02 GHS07 GHS08 Dgr | H225 H351 H332 H336 H319 | EUH066 | inhalation: ATE = 11 mg/l (vapours) | |
CLP Annex VI section 3, table 2, Index No 606-004-00-4
No change to this entry since the first version the record holds, in force 1 December 2010. · Annex VI on this site
| Index No | International Chemical Identification | EC No | CAS No | Classification | Labelling | Concentration Limits | Notes |
|---|---|---|---|---|---|---|---|
| 606-004-00-4 | 4-methylpentan-2-one; isobutyl methyl ketone | 203-550-1 | 108-10-1 | F; R11 Xn; R20 Xi; R36/37 R66 | F; Xn R: 11-20-36/37-66 S: (2-)9-16-29 |
Cosmetics Regulation Annex II, Reference number 1689
Last changed in the version in force , by Regulation (EU) 2022/1531 and Regulation (EU) 2022/2195, the acts that change names · Annex II on this site
| Reference number | Substance identification | ||
|---|---|---|---|
| Chemical name/INN | CAS number | EC number | |
| a | b | c | d |
| 1689 | 4-methylpentan-2-one; isobutyl methyl ketone (MIBK) | 108-10-1 | 203-550-1 |
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
· amended · CLP Annex VI section 3, Index No 606-004-00-4
Recorded in the version in force , by Regulation (EU) 2021/849, the act that change names. The change on its version page
| Identifiers | Version | 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 606-004-00-4CAS 108-10-1EC 203-550-1 | Before | 606-004-00-4 | 4-methylpentan-2-one; isobutyl methyl ketone | 203-550-1 | 108-10-1 | Flam. Liq. 2
Acute Tox. 4 | H225
H332
H319
| GHS02 GHS07 Dgr | H225
H332
H319
| EUH066 | ||
| After | 606-004-00-4 | 4-methylpentan-2-one; isobutyl methyl ketone | 203-550-1 | 108-10-1 | Flam. Liq. 2 Carc. 2 Acute Tox. 4 STOT SE 3 Eye Irrit. 2 | H225 H351 H332 H336 H319 | GHS02 GHS07 GHS08 Dgr | H225 H351 H332 H336 H319 | EUH066 | inhalation: ATE = 11 mg/l (vapours) | ||
· added · Cosmetics Regulation Annex II, Reference number 1689
Recorded in the version in force , by Regulation (EU) 2022/1531 and Regulation (EU) 2022/2195, the acts that change names. The change on its version page
| Identifiers | Reference number | Substance identification | ||
|---|---|---|---|---|
| Chemical name/INN | CAS number | EC number | ||
| a | b | c | d | |
| Reference number 1689CAS 108-10-1EC 203-550-1 | 1689 | 4-methylpentan-2-one; isobutyl methyl ketone (MIBK) | 108-10-1 | 203-550-1 |
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)