| Identification | More | [Name]
5-AMINO-1-NAPHTHOL-3-SULFONIC ACID | [CAS]
489-78-1 | [Synonyms]
1-AMINO-5-NAPHTHOL-7-SULFONIC ACID
5-AMINO-1-NAPHTHOL-3-SULFONIC ACID
8-AMINO-4-HYDROXY-2-NAPHTHALENESULFONIC ACID
M ACID
8-amino-4-hydroxynaphthalene-2-sulphonic acid
8-amino-4-hydroxynaphthalene-2-sulfonic acid
5-AMINO-1-NAPHTHOL-3-SULFONIC ACID HYDRATE
5-AMINO-1-NAPHTHOL-3-SULFONIC ACID 97+% | [EINECS(EC#)]
207-700-7 | [Molecular Formula]
C10H9NO4S | [MDL Number]
MFCD00035712 | [Molecular Weight]
239.25 | [MOL File]
489-78-1.mol |
| Safety Data | Back Directory | [Risk Statements ]
R36/37/38:Irritating to eyes, respiratory system and skin . | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection . | [HS Code ]
2930909899 |
| Hazard Information | Back Directory | [Chemical Properties]
1-Amino-5-hydroxynaphthalene-7-sulfonic acid [489-78-1]. (8-amino-4-hydroxynaphthalene-2-sulfonic acid), M acid, C10H9NO4S, Mr 239.2, and its sodium salt are sparingly soluble in water. Coupling with diazo compounds takes place under acidic and alkaline conditions, but a bisazo derivative cannot be obtained. Reaction with bisulfite gives 4,8-dihydroxynaphthalene-2-sulfonic acid. | [Production Methods]
1-Aminonaphthalene-5,7-disulfonic acid is heated with concentrated sodium hydroxide for 16 h at 172 – 176℃. After the reaction mixture is quenched, acidified, and purged of sulfur dioxide, the product is isolated in 80 % yield. |
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