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CAS No 2610-10-8 , Direct Red 80 Search by region : India

  • Name: Direct Red 80
  • Synonyms: Direct Red 80;Direct Red 80; DirectRed;Hexasodium 7,7'-(carbonyldiimino)bis[4-hydroxy-3-[[2-sulphonato-4-[(4-sulphonatophenyl)azo]phenyl]azo]naphthalene-2-sulphonate];
  • CAS Registry Number:
  • Flash Point: °C
  • Boiling Point: °Cat760mmHg
  • Density: 1.85 g/cm3
  • Safety Statements: 22-24/25
  • Flash Point: °C
  • EINECS: 220-027-3
  • Molecular Weight: 1373.07
  • InChI: InChI=1/C45H32N10O21S6.6Na/c56-43-33-13-5-27(17-23(33)19-39(81(71,72)73)41(43)54-52-35-15-7-29(21-37(35)79(65,66)67)50-48-25-1-9-31(10-2-25)77(59,60)61)46-45(58)47-28-6-14-34-24(18-28)20-40(82(74,75)76)42(44(34)57)55-53-36-16-8-30(22-38(36)80(68,69)70)51-49-26-3-11-32(12-4-26)78(62,63)64;;;;;;/h1-22,56-57H,(H2,46,47,58)(H,59,60,61)(H,62,63,64)(H,65,66,67)(H,68,69,70)(H,71,72,73)(H,74,75,76);;;;;;/q;6*+1/p-6/b50-48+,51-49+,54-52+,55-53+;;;;;;
  • Risk Statements: S22;S24/25
  • Molecular Formula: C45H26N10Na6O21S6
  • Molecular Structure:CAS No:2610-10-8 Direct Red 80

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References of Direct Red 80
Title: Sirius Red
CAS Registry Number: 2610-10-8
CAS Name: 7,7￠-(Carbonyldiimino)bis[4-hydroxy-3-[[2-sulfo-4-[(4-sulfophenyl)azo]phenyl]azo]-2-naphthalenesulfonic acid] hexasodium salt
Synonyms: C.I. 35780; C.I. Direct Red 80; Sirius Red F3B
Molecular Formula: C45H26N10Na6O21S6
Molecular Weight: 1373.07
Percent Composition: C 39.36%, H 1.91%, N 10.20%, Na 10.05%, O 24.47%, S 14.01%
Literature References: Sulphonated tetrakisazo dye. Dye molecules bind parallel to helical native collagen. Water and light stability: J. J. Porter, Text. Res. J. 43, 735 (1973). Spectral study: J. P. Hart, W. F. Smyth, Spectrochim. Acta 36A, 279 (1980). Staining mechanisms: L. Feldskov Nielsen et al., Biotech. Histochem. 73, 71 (1998). Use as stain for collagen: F. Sweat et al., Arch. Pathol. 78, 69 (1964); D. A. Lee et al., J. Mater. Sci.: Mater. Med. 9, 47 (1998).
Properties: uv max (buffered): 220, 235, 290 nm (e 1.2 ′ 104, 1.3 ′ 104, 1.2 ′ 104). vis max (buffered): 420, 520, 545 nm (e 0.8 ′ 104, 2.5 ′ 104, 2.6 ′ 104). pK1-6 < 2; pK7.8 >13.
pKa: pK1-6 < 2; pK7.8 >13
Absorption maximum: uv max (buffered): 220, 235, 290 nm (e 1.2 ′ 104, 1.3 ′ 104, 1.2 ′ 104); vis max (buffered): 420, 520, 545 nm (e 0.8 ′ 104, 2.5 ′ 104, 2.6 ′ 104)
Use: Stain for connective tissue. Dye for cellulose fibers.