CAS number
CAS 55-55-0 p-Methylaminophenol and its sulphate
CAS 55-55-0 · CAS 150-75-4 · CAS 1936-57-8 · EC 200-237-1 · EC 205-768-2 · EC 217-706-1 · Index No 650-031-00-4
Where CAS 55-55-0 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 650-031-00-4
No change to this entry since the first version the record holds, in force 1 December 2010. · Annex VI on this site
| Index No | 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) | ||||||
| 650-031-00-4 | bis(4-hydroxy-N-methylanilinium) sulphate | 200-237-1 | 55-55-0 | Acute Tox. 4 * STOT RE 2 * Skin Sens. 1 Aquatic Acute 1 Aquatic Chronic 1 | H302 H373 ** H317 H400 H410 | GHS08 GHS07 GHS09 Wng | H302 H373 ** H317 H410 | |||
CLP Annex VI section 3, table 2, Index No 650-031-00-4
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 |
|---|---|---|---|---|---|---|---|
| 650-031-00-4 | bis(4-hydroxy-N-methylanilinium) sulphate | 200-237-1 | 55-55-0 | Xn; R22-48/22 R43 N; R50-53 | Xn; N R: 22-43-48/22-50/53 S: (2-)36/37-46-60-61 |
Cosmetics Regulation Annex III, Reference number 223
Last changed in the version in force , by Regulation (EU) No 344/2013 and Regulation (EU) No 1197/2013, the acts that change names · Annex III on this site
| Reference number | Substance identification | Restrictions | Wording of conditions of use and warnings | |||||
|---|---|---|---|---|---|---|---|---|
| Chemical name/INN | Name of Common Ingredients Glossary | CAS number | EC number | Product type, body parts | Maximum concentration in ready for use preparation | Other | ||
| a | b | c | d | e | f | g | h | i |
| 223 | p-Methylaminophenol and its sulphate | p-Methylaminophenol p-Methylaminophenol sulphate | 150-75-4 / 55-55-0 / 1936-57-8 | 205-768-2 / 200-237-1 / 217-706-1 | Hair dye substance in oxidative hair dye products | After mixing under oxidative conditions the maximum concentration applied to hair must not exceed 0,68 % (as sulphate) Do not use with nitrosating agents Maximum nitrosamine content: 50 μg /kg Keep in nitrite-free containers | To be printed on the label: The mixing ratio. Hair colourants can cause severe allergic reactions. Read and follow instructions. This product is not intended for use on persons under the age of 16. Temporary black henna tattoos may increase your risk of allergy. Do not colour your hair if: you have a rash on your face or sensitive, irritated and damaged scalp, you have ever experienced any reaction after colouring your hair, you have experienced a reaction to a temporary black henna tattoo in the past. | |
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 · Cosmetics Regulation Annex III, Reference number 223
Recorded in the version in force , by Regulation (EU) No 344/2013 and Regulation (EU) No 1197/2013, the acts that change names. The change on its version page
| Identifiers | Version | Reference number | Substance identification | Restrictions | Wording of conditions of use and warnings | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Chemical name/INN | Name of Common Ingredients Glossary | CAS number | EC number | Product type, body parts | Maximum concentration in ready for use preparation | Other | ||||
| a | b | c | d | e | f | g | h | i | ||
| Reference number 223CAS 150-75-4CAS 1936-57-8CAS 55-55-0EC 200-237-1EC 205-768-2EC 217-706-1 | Before | 223 | p-Methylaminophenol | 150-75-4 | 205-768-2 | |||||
| After | 223 | p-Methylaminophenol and its sulphate | p-Methylaminophenolp-Methylaminophenol sulphate | 150-75-4/ 55-55-0 / 1936-57-8 | 205-768-2/ 200-237-1 / 217-706-1 | Hair dye substance in oxidative hair dye products | After mixing under oxidative conditions the maximum concentration applied to hair must not exceed 0,68 % (as sulphate) Do not use with nitrosating agents Maximum nitrosamine content: 50 μg /kg Keep in nitrite-free containers | To be printed on the label: The mixing ratio. Hair colourants can cause severe allergic reactions. Read and follow instructions. This product is not intended for use on persons under the age of 16. Temporary black henna tattoos may increase your risk of allergy. Do not colour your hair if: you have a rash on your face or sensitive, irritated and damaged scalp, you have ever experienced any reactionafter colouring your hair, you have experienced a reaction to a temporary black henna tattoo in the past. | ||
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)