7-Amino-1,3-naphthalenedisulfonic acid
- CAS NO.：86-65-7
- Empirical Formula: C10H9NO6S2
- Molecular Weight: 303.31
- MDL number: MFCD00003991
- EINECS: 201-689-2
- SAFETY DATA SHEET (SDS)
- Update Date: 2025-12-31 14:38:37
What is 7-Amino-1,3-naphthalenedisulfonic acid?
Chemical properties
off-white to beige-green to light brown. 2-Aminonaphthalene-6,8-disulfonic acid [86-65-7]. (7-aminonaphthalene-1,3-disulfonic acid), amino G acid, C10H9NO6S2, Mr 303.3, and its bis-alkali-metal salts are very soluble in water, but the acid salts, especially the acid potassium salt, are much less soluble.
The Uses of 7-Amino-1,3-naphthalenedisulfonic acid
7-Amino-1,3-naphthalenedisulfonic Acid is a reagent which may be used in the preparation of pyrimidine derivatives.
The Uses of 7-Amino-1,3-naphthalenedisulfonic acid
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.
Safety Profile
Questionable carcinogen with experimental neoplastigenic data. When heated to decomposition it emits toxic fumes of NOx and SOx.
Properties of 7-Amino-1,3-naphthalenedisulfonic acid
| Melting point: | 300°C |
| Density | 1.6329 (rough estimate) |
| refractive index | 1.7330 (estimate) |
| pka | -0.93±0.40(Predicted) |
| form | Powder or Needles |
| color | Off-white to beige-green to light brown |
| Water Solubility | soluble |
| CAS DataBase Reference | 86-65-7(CAS DataBase Reference) |
| EPA Substance Registry System | 1,3-Naphthalenedisulfonic acid, 7-amino- (86-65-7) |
Safety information for 7-Amino-1,3-naphthalenedisulfonic acid
| Signal word | Danger |
| Pictogram(s) |
 Corrosion Corrosives GHS05 |
| GHS Hazard Statements |
H314:Skin corrosion/irritation |
| Precautionary Statement Codes |
P280:Wear protective gloves/protective clothing/eye protection/face protection. P310:Immediately call a POISON CENTER or doctor/physician. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for 7-Amino-1,3-naphthalenedisulfonic acid
7-Amino-1,3-naphthalenedisulfonic acid manufacturer
Gokul Eximp
Mumbai
Phone:91-9820024339
Whatsapp: 91-9820024339
product: 7-Amino-1,3-naphthalenedisulfonic acid
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