Product Name

  • Name

    6-Amino-4-hydroxy-2-naphthalenesulfonic acid

  • EINECS 202-000-8
  • CAS No. 90-51-7
  • Density 1.627 g/cm3
  • Solubility 4.5g/L(hot water)
  • Melting Point
  • Formula C10H9NO4S
  • Boiling Point 458℃[at 101 325 Pa]
  • Molecular Weight 239.252
  • Flash Point
  • Transport Information UN 2585 8/PG 3
  • Appearance light grey powder
  • Safety 26-27-28-36/37/39-45
  • Risk Codes 34
  • Molecular Structure Molecular Structure of 90-51-7 (6-Amino-4-hydroxy-2-naphthalenesulfonic acid)
  • Hazard Symbols CorrosiveC
  • Synonyms 2-Amino-8-naphthol-6-sulfonicacid;2-Naphthalenesulfonicacid, 6-amino-4-hydroxy-;6-Amino-4-naphthol-2-sulfonic acid;7-Amino-1-hydroxy-3-naphthalenesulfonicacid;7-Amino-1-naphthol-3-sulfonic acid;Aminonaphthol sulfonic acid g;C.I. Developer 3;Gamma acid;NSC 31508;NSC 8630;Y acid;g-Acid;1-Naphthol-3-sulfonicacid, 7-amino- (4CI);1-Naphthol-7-amino-3-sulfonic acid;2-Amino-6-sulfo-8-naphthol;2-Amino-8-hydroxy-6-sulfonaphthalene;2-Amino-8-hydroxynaphthalene-6-sulfonic acid;
  • PSA 109.00000
  • LogP 3.03630

6-Amino-4-hydroxy-2-naphthalenesulfonic acid Chemical Properties

Structure of 6-Amino-4-hydroxy-2-naphthalenesulfonic acid (CAS NO.90-51-7):

Empirical Formula: C10H9NO4S
Molecular Weight: 239.2478 
EINECS: 202-000-8 
Index of Refraction: 1.748
Molar Refractivity: 59.8 cm3
Molar Volume: 147 cm3
Polarizability: 23.7×10-24cm3
Surface Tension: 86.4 dyne/cm
Density: 1.627 g/cm3
Product Categories of 6-Amino-4-hydroxy-2-naphthalenesulfonic acid (CAS NO.90-51-7): Intermediates of Dyes and Pigments;Intermediates;Organics 

6-Amino-4-hydroxy-2-naphthalenesulfonic acid Uses

 6-Amino-4-hydroxy-2-naphthalenesulfonic acid (CAS NO.90-51-7)  can be used of azo dyes' intermediate, and is mainly used for the manufacture of activity and direct dyes.

6-Amino-4-hydroxy-2-naphthalenesulfonic acid Toxicity Data With Reference

1.    

ipr-mus LD :>500 mg/kg

     CBCCT*    “Summary Tables of Biological Tests” National Research Council Chemical-Biological Coordination Center. 6 (1954),59.

6-Amino-4-hydroxy-2-naphthalenesulfonic acid Safety Profile

Moderately toxic by intraperitoneal route. When heated to decomposition it emits toxic vapors of NOx and SOx.

Hazard Codes:  CorrosiveC
Risk Statements: 34 
R34:Causes burns.
Safety Statements: 26-27-28-36/37/39-45 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S27:Take off immediately all contaminated clothing. 
S28:After contact with skin, wash immediately with plenty of soap-suds. 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection. 
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) 
RIDADR: UN 2585 8/PG 3
WGK Germany: 1
RTECS: QK1295250

6-Amino-4-hydroxy-2-naphthalenesulfonic acid Specification

 6-Amino-4-hydroxy-2-naphthalenesulfonic acid , its cas register number is 90-51-7. It also can be called 1-Naphthol-3-sulfonic acid, 7-amino- ; 4-14-00-02823 (Beilstein Handbook Reference) ; Aminonaphthol sulfonic acid gamma ; Gamma Acid ; gamma-Acid .

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