CAS number
CAS 3251-56-7 2-methoxy-4-nitrophenol…
CAS 3251-56-7 · EC 221-839-0
Where CAS 3251-56-7 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
Cosmetics Regulation Annex II, Reference number 1251
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 |
| 1251 | 2-methoxy-4-nitrophenol (4-Nitroguaiacol) and its salts, when used as a substance in hair dye products | 3251-56-7 | 221-839-0 |
Look up a number
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Its history
No change to this entry since the first version the record holds, in force 11 July 2013.
Sources
- Cosmetics Regulation: every version the record holds; rows read from EUR-Lex consolidated version 02009R1223-20260518, in force 18 May 2026 (external, EUR-Lex)