| Identification | More | [Name]
2-Naphthylamine-5,7-disulfonic acid | [CAS]
118-33-2 | [Synonyms]
2-AMINONAPHTHALENE-5,7-DISULFONIC ACID
2-NAPHTHYLAMINE-5,7-DISULFONIC ACID
2-NAPHTHYLAMINE-5,7-DISULPHONIC ACID
6-AMINO-1,3-NAPHTHALENEDISULFONIC ACID
AMINO J-ACID
2-naftylamin-5,7-disulfonansodny
2-Naphthylamine-5,7-disulfonicaacid
6-amino-1,3-naphthalenedisulfonic
6-amino-3-naphthalenedisulfonicacid
6-aminonaphthalene-1,3-disulphonicacid
6-amino-naphthalene-3-disulfonicacid
amino-iacid
kyselinaamino-i
6-aminonaphthalene-1,3-disulfonic acid
2-NAPHTHYLAMINE-5,7-DISULFONIC ACID, 96% HPLC
1,3-Naphthalenedisulfonic acid, 6-amino-
6-AMINO-1,3-NAPHTHALENE-DISULPHONICACID
2-Naphthylamin-5,7-disulfonsure
6-amino-1,3-naphthalenesulfonic acid | [EINECS(EC#)]
204-246-1 | [Molecular Formula]
C10H9NO6S2 | [MDL Number]
MFCD00021513 | [Molecular Weight]
303.31 | [MOL File]
118-33-2.mol |
| Safety Data | Back Directory | [RIDADR ]
1759 | [HazardClass ]
8 | [PackingGroup ]
III | [Toxicity]
rat,LD50,oral,2gm/kg (2000mg/kg),"Prehled Prumyslove Toxikologie; Organicke Latky," Marhold, J., Prague, Czechoslovakia, Avicenum, 1986Vol. -, Pg. 1059, 1986. |
| Hazard Information | Back Directory | [Chemical Properties]
White glossy long prismatic needle-like crystals, the crystals precipitated from water contain 5 molecules of crystal water. The solubility in water at 20°C is 23%. Its monosodium salt and monopotassium salt are commonly used in industry, both of which are soluble in water, and the salt solution has green fluorescence. | [Uses]
2-Naphthylamine-5,7-disulfonic acid is an intermediate for the preparation of J acid, bis-J acid, phenyl J acid and scarlet acid. | [Hazard]
Skin - Rabbit 2 mg/24h severe; Eye - Rabbit 0.75 mg/24h severe | [Flammability and Explosibility]
Notclassified | [Synthesis]
2-Naphthylamine-5,7-disulfonic acid can be obtained by hydrolysis of 2-naphthylamine-1,5,7-trisulfonic acid. Add sulfuric acid, sodium sulfate and 2-naphthylamine-1,5,7-trisulfonic acid into water, keep warm at 110-120°C for 4 hours, cool and filter, and wash in sodium sulfate solution to obtain the product. |
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