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CAS No 846-70-8 , Naphthol Yellow S

  • Name: Naphthol Yellow S
  • Synonyms: C.I. 10316; Acid yellow 1 (C.I. 10316);8-Hydroxy-5,7-dinitronaphthalene-2-sulfonic acid sodium salt; Naphthol Yellow S sodium salt; disodium 5,7-dinitro-8-oxidonaphthalene-2-sulphonate; Acid Yellow 1; naphthol yellow S (C.I. 10316); C.I. 10316~5,7-Dinitro-8-hydroxy-2-naphthalenesulphonic acid disodium salt~Flavianic acid disodium salt;5,7-Dinitro-8-hydroxy-2-naphthalenesulfonic acid, disodium salt; NaphtholYellowSsodiumsalt;Naphthol Yellow S;
  • CAS Registry Number:
  • Safety Statements: S22;S24/25
  • Hazard Symbols: Xi,C,F
  • EINECS: 212-690-2
  • Molecular Weight: 358.19
  • InChI: InChI=1/C10H6N2O8S.Na/c13-10-7-3-5(21(18,19)20)1-2-6(7)8(11(14)15)4-9(10)12(16)17;/h1-4,13H,(H,18,19,20);/q;+1/p-2
  • Risk Statements: S22;S24/25
  • Molecular Formula: C10H4N2Na2O8S
  • Molecular Structure:CAS No:846-70-8 Naphthol Yellow S

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846-70-8 FLAVIANIC ACID DISODIUM SALT

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References of Naphthol Yellow S
Title: Naphthol Yellow S
CAS Registry Number: 846-70-8
CAS Name: 8-Hydroxy-5,7-dinitro-2-naphthalenesulfonic acid disodium salt
Synonyms: Citronin A; Sulfur Yellow S; Acid Yellow S; FD & C Yellow no. 1; Ext. D & C Yellow no. 7; C.I. Acid Yellow 1; C.I. 10316
Molecular Formula: C10H4N2Na2O8S
Molecular Weight: 358.19
Percent Composition: C 33.53%, H 1.13%, N 7.82%, Na 12.84%, O 35.73%, S 8.95%
Literature References: Prepn: Colour Index vol. 4 (3rd ed., 1971) p 4004.
Properties: Greenish yellow powder, sol in water to a yellow soln. The free acid is known as flavianic acid.
Use: Dye for wool, silk.