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CAS No 74-39-5 , Azo Violet

  • Name: Azo Violet
  • Synonyms: Azo Violet; Magneson; 2,4-Dihydroxy-4-nitroazobenzene; 4-[(4-nitrophenyl)diazenyl]-1,3-benzenediol;Magneson I;4-(4-Nitrophenylazo)resorcinol;
  • CAS Registry Number:
  • Melting Point: 195-200 ºC
  • Density: 1.45 g/cm3
  • Refractive index: 1.665
  • Safety Statements: R36/38
  • Hazard Symbols: Xi: Irritant;
  • EINECS: 200-808-5
  • Molecular Weight: 259.22
  • InChI: InChI=1/C12H9N3O4/c16-10-5-6-11(12(17)7-10)14-13-8-1-3-9(4-2-8)15(18)19/h1-7,16-17H/b14-13+
  • Risk Statements: S26;S36
  • Molecular Formula: C12H9N3O4
  • Molecular Structure:CAS No:74-39-5 Azo Violet

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74-39-5 4-(4-NITROPHENYLAZO)RESORCINOL; 96%

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74-39-5 MAGNESON I

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74-39-5 4-(4-Nitrophenylazo)resorcinol

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References of Azo Violet
Title: Magneson
CAS Registry Number: 74-39-5
CAS Name: 4-[(4-Nitrophenyl)azo]-1,3-benzenediol
Synonyms: 4-(p-nitrophenylazo)resorcinol; 2,4-dihydroxy-4￠-nitroazobenzene
Molecular Formula: C12H9N3O4
Molecular Weight: 259.22
Percent Composition: C 55.60%, H 3.50%, N 16.21%, O 24.69%
Literature References: Ref: Suitzu, Okuma, J. Soc. Chem. Ind. Jpn. 29, 132 (1926); Ruigh, J. Am. Chem. Soc. 51, 1456 (1929); Engel, ibid. 52, 1812 (1930).
Properties: Brownish-red powder. Practically insol in water; sol in dil aq NaOH.
Use: For the detection of magnesium with which it yields a bright blue color in alkaline soln. Also used to determine molybdenum with which it forms a red-violet complex: Nikitina, Andrianova, C.A. 75, 136789v (1971).