EC number
EC 203-450-8 1,3-butadiene
CAS 106-99-0 · EC 203-450-8 · Index No 601-013-00-X
Where EC 203-450-8 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 601-013-00-X
No change to this entry since the first version the record holds, in force 1 December 2010. · 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) | ||||||
| 601-013-00-X | 1,3-butadiene; buta-1,3-diene | 203-450-8 | 106-99-0 | Flam. Gas 1 Press. Gas Carc. 1A Muta. 1B | H220 H350 H340 | GHS02 GHS04 GHS08 Dgr | H220 H350 H340 | D U | ||
CLP Annex VI section 3, table 2, Index No 601-013-00-X
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 |
|---|---|---|---|---|---|---|---|
| 601-013-00-X | 1,3-butadiene; buta-1,3-diene | 203-450-8 | 106-99-0 | F+; R12 Carc. Cat. 1; R45 Muta. Cat. 2; R46 | F+; T R: 45-46-12 S: 53-45 | D |
Cosmetics Regulation Annex II, Reference number 463
No change to this entry since the first version the record holds, in force 11 July 2013. · Annex II on this site
| Reference number | Substance identification | ||
|---|---|---|---|
| Chemical name/INN | CAS number | EC number | |
| a | b | c | d |
| 463 | Buta-1,3-diene, see also entries 464-611 | 106-99-0 | 203-450-8 |
Plant Protection Products Regulation Annex III, No 30
Last changed in the version in force , by Regulation (EU) 2019/1381 and Regulation (EU) 2021/383, the acts that change names · Annex III on this site
| No | Name | EC names/Other names | CAS number | EC number | Classification/Other properties |
|---|---|---|---|---|---|
| 30. | Buta-1,3-diene | Buta-1,3-diene; 1,3-Butadiene | 106-99-0 | 203-450-8 | Carcinogenic cat.1A/ Mutagenic cat.1B |
REACH Annex XVII appendix 1, Index No 601-013-00-X
No change to this entry since the first version the record holds, in force 12 October 2008. · Annex XVII on this site
| Substances | Index No | EC No | CAS No | Notes |
|---|---|---|---|---|
| 1,3-Butadiene; buta-1,3-diene | 601-013-00-X | 203-450-8 | 106-99-0 | D |
REACH Annex XVII appendix 4, Index No 601-013-00-X
No change to this entry since the first version the record holds, in force 12 October 2008. · Annex XVII on this site
| Substances | Index No | EC No | CAS No | Notes |
|---|---|---|---|---|
| 1,3-Butadiene buta-1,3-diene | 601-013-00-X | 203-450-8 | 106-99-0 | D |
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 · Plant Protection Products Regulation Annex III, No 30
Recorded in the version in force , by Regulation (EU) 2019/1381 and Regulation (EU) 2021/383, the acts that change names. The change on its version page
| Identifiers | No | Name | EC names/Other names | CAS number | EC number | Classification/Other properties |
|---|---|---|---|---|---|---|
| No 30CAS 106-99-0EC 203-450-8 | 30. | Buta-1,3-diene | Buta-1,3-diene; 1,3-Butadiene | 106-99-0 | 203-450-8 | Carcinogenic cat.1A/ Mutagenic cat.1B |
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)
- Plant Protection Products Regulation: every version the record holds; rows read from EUR-Lex consolidated version 02009R1107-20260616, in force 16 June 2026 (external, EUR-Lex)
- REACH: every version the record holds; rows read from EUR-Lex consolidated version 02006R1907-20260622, detected 11 September 2026 (external, EUR-Lex)