EC number
EC 203-251-6 4-nitrosophenol
CAS 104-91-6 · EC 203-251-6 · Index No 604-042-00-6
Where EC 203-251-6 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 604-042-00-6
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) | ||||||
| 604-042-00-6 | 4-nitrosophenol | 203-251-6 | 104-91-6 | Muta. 2 Acute Tox. 4 * Eye Dam. 1 Aquatic Chronic 2 | H341 H302 H318 H411 | GHS08 GHS05 GHS07 GHS09 Dgr | H341 H302 H318 H411 | |||
CLP Annex VI section 3, table 2, Index No 604-042-00-6
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 |
|---|---|---|---|---|---|---|---|
| 604-042-00-6 | 4-nitrosophenol | 203-251-6 | 104-91-6 | Muta. Cat. 3; R68 Xn; R22 Xi; R41 N; R51-53 | Xn; N R: 22-41-51/53-68 S: (2-)26-36/37/39-47-49-61 |
Cosmetics Regulation Annex II, Reference number 995
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 |
| 995 | 4-Nitrosophenol | 104-91-6 | 203-251-6 |
Look up a number
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Its history
No change to this entry since the first version the record holds, in force 1 December 2010.
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)