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CAS No 5141-20-8 , Light Green SF

  • Name: Light Green SF
  • Synonyms: Dihydrogen (ethyl)[4-[p-[ethyl(m-sulphonatobenzyl)amino]-p'-sulphonatobenzhydrylene]cyclohexa-2,5-dien-1-ylidene](m-sulphonatobenzyl)ammonium disodium salt;Light Green SF;
  • CAS Registry Number:
  • Melting Point: 290 °C (dec.)(lit.)
  • Safety Statements: Moderately toxic by subcutaneous and intravenous routes. Questionable carcinogen with experimental carcinogenic and neoplastigenic data. Experimental reproductive effects. Mutation data reported. When heated to decomposition it emits very toxic fumes of NOx, Na2O, and SOx.
  • Hazard Symbols: Xn
  • EINECS: 225-906-5
  • Molecular Weight: 792.85
  • InChI: InChI=1/C37H36N2O9S3.2Na/c1-3-38(25-27-7-5-9-35(23-27)50(43,44)45)32-17-11-29(12-18-32)37(31-15-21-34(22-16-31)49(40,41)42)30-13-19-33(20-14-30)39(4-2)26-28-8-6-10-36(24-28)51(46,47)48;;/h5-24H,3-4,25-26H2,1-2H3,(H2-,40,41,42,43,44,45,46,47,48);;/q;2*+1/p-2
  • Risk Statements: 68
  • Molecular Formula: C37H34N2O9S3.2Na
  • Molecular Structure:CAS No:5141-20-8 Light Green SF

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References of Light Green SF
Title: Light Green SF Yellowish
CAS Registry Number: 5141-20-8
CAS Name: N-Ethyl-N-[4-[[4-[ethyl[(3-sulfophenyl)methyl]amino]phenyl](4-sulfophenyl)methylene]-2,5-cyclohexadien-1-ylidene]-3-sulfobenzenemethanaminium inner salt, disodium salt
Synonyms: C.I. Acid Green 5; ethyl[4-[p-[ethyl(m-sulfobenzyl)amino]-a-(p-sulfophenyl)benzylidene]-2,5-cyclohexadien-1-ylidene](m-sulfobenzyl)ammonium hydroxide inner salt disodium salt; C.I. 42095; FD & C Green No. 2
Trademarks: Lissamine Green SF (Zeneca)
Molecular Formula: C37H34N2Na2O9S3
Molecular Weight: 792.85
Percent Composition: C 56.05%, H 4.32%, N 3.53%, Na 5.80%, O 18.16%, S 12.13%
Literature References: Prepn and refs: Colour Index vol. 4 (3rd ed., 1971) p 4385. Biological use: H. J. Conn's Biological Stains, R. D. Lillie, Ed. (Williams & Wilkins, Baltimore, 9th ed., 1977) pp 257-258, 582. Toxicity data: F. C. Lu, A. Lavalle, Can. Pharm. J. 97, 30 (1964). Chronic toxicity study: W. H. Hansen et al., Food Cosmet. Toxicol. 4, 389 (1966).
Properties: A reddish-brown powder. Sol in water to a green soln which turns yellowish-brown with HCl and then gradually fades. Addition of NaOH almost completely decolorizes the soln yielding a dull violet ppt. LD50 orally in rats: >2 g/kg (Lu, Lavalle).
Toxicity data: LD50 orally in rats: >2 g/kg (Lu, Lavalle)
Use: As dye, biological stain.