EC number
EC 203-733-6 di-tert-butyl peroxide
CAS 110-05-4 · EC 203-733-6 · Index No 617-001-00-2
Where EC 203-733-6 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 617-001-00-2
Last changed in the version in force , by Regulation (EU) No 487/2013 and 4 others, the acts 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) | ||||||
| 617-001-00-2 | di-tert-butyl peroxide | 203-733-6 | 110-05-4 | Org. Perox. E Flam. Liq. 2 Muta. 2 | H242 H225 H341 | GHS02 GHS08 Dgr | H242 H225 H341 | |||
CLP Annex VI section 3, table 2, Index No 617-001-00-2
Last changed in the version in force , by Regulation (EU) No 487/2013 and 4 others, the acts that change names · Annex VI on this site
| Index No | International Chemical Identification | EC No | CAS No | Classification | Labelling | Concentration Limits | Notes |
|---|---|---|---|---|---|---|---|
| 617-001-00-2 | di-tert-butyl peroxide | 203-733-6 | 110-05-4 | O; R7 F; R11 Muta. Cat. 3, R68 | O; F; Xn R: 7-11-68 S: (2-)3/7-14-16-23-36/37/39 |
Cosmetics Regulation Annex II, Reference number 1553
Last changed in the version in force , by Regulation (EU) 2019/831 and 5 others, 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 |
| 1553 | Di-tert-butyl peroxide | 110-05-4 | 203-733-6 |
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 · Cosmetics Regulation Annex II, Reference number 1553
Recorded in the version in force , by Regulation (EU) 2019/831 and 5 others, 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 1553CAS 110-05-4EC 203-733-6 | 1553 | Di-tert-butyl peroxide | 110-05-4 | 203-733-6 |
· amended · CLP Annex VI section 3, Index No 617-001-00-2
Recorded in the version in force , by Regulation (EU) No 487/2013 and 4 others, the acts that change names. The change on its version page
| Identifiers | Version | Index No | International Chemical Identification | EC No | CAS No | Classification | Labelling | Specific Conc. Limits, M-factors | 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 617-001-00-2CAS 110-05-4EC 203-733-6 | Before | 617-001-00-2 | di-tert-butyl peroxide | 203-733-6 | 110-05-4 | Org. Perox. E Flam. Liq. 2 | H242 H225 | GHS02 Dgr | H242 H225 | |||
| After | 617-001-00-2 | di-tert-butyl peroxide | 203-733-6 | 110-05-4 | Org. Perox. E Flam. Liq. 2Muta. 2 | H242 H225H341 | GHS02 GHS08 Dgr | H242 H225H341 | ||||
· amended · CLP Annex VI section 3, table 2, Index No 617-001-00-2
Recorded in the version in force , by Regulation (EU) No 487/2013 and 4 others, the acts that change names. The change on its version page
| Identifiers | Version | Index No | International Chemical Identification | EC No | CAS No | Classification | Labelling | Concentration Limits | Notes |
|---|---|---|---|---|---|---|---|---|---|
| Index No 617-001-00-2CAS 110-05-4EC 203-733-6 | Before | 617-001-00-2 | di-tert-butyl peroxide | 203-733-6 | 110-05-4 | O; R7 F; R11 | O; | ||
| After | 617-001-00-2 | di-tert-butyl peroxide | 203-733-6 | 110-05-4 | O; R7 F; R11Muta. Cat. 3, R68 | O; F; Xn R: 7-11-68 S: (2-)3/7-14-16-23-36/37/39 |
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)