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CAS No 15139-76-1 , disodium

  • Name: disodium
  • Synonyms: CTK4C7036;UNII-RGU455OS50; AG-D-98392; HSDB 7975;4-[[3-ethoxycarbonyl-5-oxo-1-(4-sulfonatophenyl)-4H-pyrazol-4-
    yl]diazenyl]naphthalene-1-sulfonate;disodium;
  • CAS Registry Number:
  • Flash Point: °C
  • Boiling Point: °Cat760mmHg
  • Density: g/cm3
  • Safety Statements: When heated to decomposition emits toxic fumes of SOx.
  • Flash Point: °C
  • EINECS: 239-201-5
  • Molecular Weight: 590.493379
  • InchiKey: BLQVZCMYWIKAGV-UHFFFAOYSA-L
  • InChI: InChI=1S/C22H18N4O9S2.2Na/c1-2-35-22(28)20-19(21(27)26(25-20)13-7-9-14
    (10-8-13)36(29,30)31)24-23-17-11-12-18(37(32,
    33)34)16-6-4-3-5-15(16)17;;/h3-12,19H,2H2,1H3,(H,29,30,31)(H,32,33,
    34);;/q;2*+1/p-2
  • Molecular Formula: C22H16N4Na2O9S2
  • Molecular Structure:CAS No:15139-76-1 disodium

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15139-76-1 DISODIUM 3-ETHYL 4,5-DIHYDRO-5-OXO-4-[(4-SULFONATO-NAPHTHALEN-1-YL)AZO]-1-(4-SULFONATOPHENYL)-1H-PYRAZOLE-3-CARBOXYLATE

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References of disodium
Title: Orange B
CAS Registry Number: 15139-76-1
CAS Name: 4,5-Dihydro-5-oxo-4-[(4-sulfo-1-naphthalenyl)azo]-1-(4-sulfophenyl)-1H-pyrazole-3-carboxylic acid 3-ethyl ester disodium salt
Synonyms: 5-oxo-4-[(4-sulfo-1-naphthyl)azo]-1-(p-sulfophenyl)-2-pyrazoline-3-carboxylic acid 3-ethyl ester disodium salt; 5-hydroxy-4-[(4-sulfo-1-naphthalenyl)azo]-1-(4-sulfophenyl)-1H-pyrazole-3-carboxylic acid 3-ethyl ester disodium salt; 1-(4-sulfophenyl)-3-ethylcarboxyl-4-(4-sulfonaphthylazo)-5-hydroxypyrazole disodium salt; C.I. Acid Orange 137; C.I. 19235
Molecular Formula: C22H16N4Na2O9S2
Molecular Weight: 590.49
Percent Composition: C 44.75%, H 2.73%, N 9.49%, Na 7.79%, O 24.39%, S 10.86%
Literature References: Prepn: W. H. Kretlow et al., US 3285906 (1966 to Stange Co.). Review: Fed. Regist. 43, 45611 (1978). See also Colour Index vol. 4 (3rd ed., 1971) p 4134.
Properties: Dull orange crystals. Absorption max (0.04N ammonium acetate): 442 nm. Soly in water at 77°: 220 g/l. Violet soln in conc H2SO4, changing to fuchsia then red on dilution. Red soln in conc HCl. Yellowish soln in 10% NaOH, changing to brownish yellow on dilution.
Absorption maximum: Absorption max (0.04N ammonium acetate): 442 nm
Use: In coloring sausage and frankfurter casings.