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CAS No 992-59-6 , disodium

  • Name: disodium
  • Synonyms: Direct Red DCB; Diphenyl Red 4B; Benzopurpurin 4B; Azocard Red 4B; Amanil purpurine;C.I. Direct Red 2; DIRECT RED 2; Hispamin Red 4B;4-amino-3-[[4-[4-[(1-amino-4-sulfonatonaphthalen-2-yl)diazenyl]
    -3-methylphenyl]-2-methylphenyl]diazenyl]naphthalene-1-sulfonate;disodium;
  • CAS Registry Number:
  • Melting Point: ca. 290 C (decomposes)
  • Flash Point: °C
  • Boiling Point: °Cat760mmHg
  • Density: g/cm3
  • Safety Statements: S45S53
  • Hazard Symbols: T
  • Flash Point: °C
  • EINECS: 213-594-3
  • Molecular Weight: 724.716379
  • InchiKey: SUXCALIDMIIJCK-UHFFFAOYSA-L
  • InChI: InChI=1S/C34H28N6O6S2.2Na/c1-19-15-21(11-13-27(19)37-39-29-17-31(47(41,
    42)43)23-7-3-5-9-25(23)33(29)35)22-12-14-28(20(2)16-22)38-40-30-18-32(48
    (44,45)46)24-8-4-6-10-26(24)34(30)36;;/h3-18H,35-36H2,1-2H3,(H,41,42,
    43)(H,44,45,46);;/q;2*+1/p-2
  • Risk Statements: 45
  • Molecular Formula: C34H26N6Na2O6S2
  • Molecular Structure:CAS No:992-59-6 disodium

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992-59-6 Benzopurpurine 4b

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992-59-6 1-Naphthalenesulfonicacid,3,3'-[(3,3'-dimethyl[1,1'-biphenyl]-4,4'-diyl)bis(2,1-diazenediyl)]bis[4-amino-,sodium salt (1:2)

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References of disodium
Title: Benzopurpurine 4B
CAS Registry Number: 992-59-6
CAS Name: 3,3￠-[(3,3￠-Dimethyl[1,1￠-biphenyl]-4,4￠-diyl)bis(azo)]bis[4-amino-1-naphthalenesulfonic acid] disodium salt
Synonyms: disodium o-tolidinediazobis(1-naphthylamine-4-sulfonate); C.I. Direct Red 2; C.I. 23500; azamin 4B; eclipse red; fast scarlet
Trademarks: Paper Red 4B (Crompton & Knowles); Sultan Red 4B; Cotton Red 4B
Molecular Formula: C34H26N6Na2O6S2
Molecular Weight: 724.72
Percent Composition: C 56.35%, H 3.62%, N 11.60%, Na 6.34%, O 13.25%, S 8.85%
Literature References: Prepn from diazotized o-tolidine and sodium 4-amino-1-naphthalenesulfonate: DE 35615 (1885 to A. G. für Anilinfabrikation Berlin), Frdl. 1, 473; F. J. Welcher, Organic Analytical Reagents vol. 4 (Van Nostrand Co., New York, 1948) pp 338-339; Colour Index vol. 4 (3rd ed., 1971) p 4189. See also: H. J. Conn's Biological Stains, R. D. Lillie, Ed. (Williams & Wilkins, Baltimore, 9th ed., 1977) p 154.
Properties: Brown powder. Soluble in water, sodium hydroxide, sulfuric acid, ethanol, acetone, Cellosolve. Practically insol in other organic solvents.
Use: For dyeing primarily cotton and viscose rayon: Colour Index vol. 2 (3rd ed., 1971) p 2101. As an analytical reagent in detection of Al, Mg, Hg, Ag, U; as a biological stain; as pH indicator, violet 1.2 to red 4.0.