Identification | More | [Name]
7-Amino-1,3-naphthalenedisulfonic acid | [CAS]
86-65-7 | [Synonyms]
2-NAPHTHYLAMINE-3,6,8-TRISULFONIC ACID 7-AMINO-1,3,6-NAPHTHALENETRISULFONIC ACID AMINO K ACID K-ACID 7-amino-3-naphthalenedisulfonicacid 7-aminonaphthalene-1,3-disulphonic acid 2-NAPHTHYLAMINE-6,8-DISULFONIC ACID (AMINO G SALT) 7-aminonaphthalene-1,3-disulfonic acid 1,3-Disulfo-7-naphthylamine 7-Amino-1,3-naphthalenedisulfonic acid, tech. 1,3-Naphthalenedisulfonic acid, 7-amino- 7-Amino-1,3-naphthalenedisulfonic acid 7-Naphthylamine-1,3-disulfonic acid Amido G acid Amino-1,3-naphthalenedisulfonic acid, 7- 6,8-Disulfo-2-aminonaphthalene 2-Amino-6,8-naphthalenedisulfonic acid 2-Aminonaphthalene-6,8-disulfonic acid | [EINECS(EC#)]
201-689-2 | [Molecular Formula]
C10H9NO6S2 | [MDL Number]
MFCD00035721 | [Molecular Weight]
303.31 | [MOL File]
86-65-7.mol |
Safety Data | Back Directory | [Hazard Codes ]
C | [Risk Statements ]
R34:Causes burns. | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice . | [RIDADR ]
1759 | [HazardClass ]
8 | [PackingGroup ]
III | [HS Code ]
29214900 | [Safety Profile]
Questionable
carcinogen with experimental neoplastigenic
data. When heated to decomposition it
emits toxic fumes of NOx and SOx. |
Hazard Information | Back Directory | [Chemical Properties]
off-white to beige-green to light brown | [Uses]
Azo dye intermediate. | [Production Methods]
The disodium or dipotassium salt of 2-hydroxynaphthalene-6,8-disulfonic acid is heated with excess aqueous ammonia and ammonium bisulfite at 185℃ for 18 h. The reaction mixture is basified, heated to remove excess ammonia, neutralized, and evaporated while any residual sulfite is removed. The resulting amino G acid liquor (95 % yield) is used directly for caustic fusion to give g acid, the major outlet. |
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