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CAS No 494-44-0 , amino-F acid

  • Name: amino-F acid
  • Synonyms: 7-azanylnaphthalene-2-sulfonic acid;2-Amino-7-naphthalenesulfonic acid;7-aminonaphthalene-2-sulfonic acid;amino-F acid;7-Amino-2-naphthalenesulfonic acid;2-Naphthylamine-7-sulfonic acid;7-aminonaphthalene-2-sulphonic acid;
  • CAS Registry Number:
  • Density: 1.502g/cm3
  • Refractive index: 1.713
  • EINECS: 207-789-2
  • Molecular Weight: 223.24836
  • InChI: InChI=1/C10H9NO3S/c11-9-3-1-7-2-4-10(15(12,13)14)6-8(7)5-9/h1-6H,11H2,(H,12,13,14)
  • Molecular Formula: C10H9NO3S
  • Molecular Structure:CAS No:494-44-0 amino-F acid

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494-44-0 7-aminonaphthalene-2-sulfonic acid

  • 7-aminonaphthalene-2-sulfonic acid
  • China Dynastay Colourants Co. Ltd [Manufacturer]
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494-44-0 7-AMINO-2-NAPHTHALENESULFONIC ACID

  • China Nanjing Chemlin Chemical Industry Co.,Ltd. [Manufacturer]
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  • Address: Rm.902 Longyin Plaza,
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References of amino-F acid
Title: Cassella's Acid F
CAS Registry Number: 494-44-0
CAS Name: 7-Amino-2-naphthalenesulfonic acid
Synonyms: 2-naphthylamine-7-sulfonic acid; b-naphthylamine-d-sulfonic acid
Molecular Formula: C10H9NO3S
Molecular Weight: 223.25
Percent Composition: C 53.80%, H 4.06%, N 6.27%, O 21.50%, S 14.36%
Literature References: Prepn by sulfonation of b-naphthylamine and separation from the 6-amino isomer: Green, J. Chem. Soc. 55, 33 (1889); from 7-hydroxy-2-naphthalenesulfonic acid and ammonia: Green, loc. cit.; Wait, US 1492497 (1924).
 
Derivative Type: Monohydrate
Properties: Crystals. Sol in 5040 parts cold water, 350 parts boiling water; sol in glacial acetic acid.
 
Derivative Type: Copper salt
Properties: Orange-yellow crystals. Sparingly sol in water. Ref: Green, Vakil, J. Chem. Soc. 113, 35 (1918).
 
NOTE: Bronner's acid was first described as 6-amino-2-naphthalenesulfonic acid or 2-naphthylamine-6-sulfonic acid. However, this product obtained by sulfonation of b-naphthylamine, was subsequently shown to be a mixture of about equal parts of 6- and 7-amino-2-naphthalenesulfonic acids: Green, loc. cit.
Use: Both the title compd and its 6-amino isomer are used in the manuf of azo dyes, e.g., GB 810246 (1959 to Bayer).