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CAS No 2243-76-7 , Mordant Orange 1

  • Name: Mordant Orange 1
  • Synonyms: Acid Mordant Orange R;C.I. 14030; C.I. 14030;5-(4-Nitrophenylazo)salicylic acid;Mordant Orange 1; 5-(4-Nitrophenylazo)salicylic acid; Alizarine yellow R; Alizarin Yellow R; Alizarin yellow R (0.1% in Water) [for PH Determination];
  • CAS Registry Number:
  • Melting Point: 250 ºC
  • Density: 1.49 g/cm3
  • Refractive index: 1.671
  • Safety Statements: Mutation data reported. When heated to decomposition it emits toxic fumes of NOx. See also NITRO COMPOUNDS of AROMATIC HYDROCARBONS.
  • Hazard Symbols: Xn: Harmful;
  • EINECS: 218-818-3
  • Molecular Weight: 287.23
  • InChI: InChI=1/C13H9N3O5/c17-12-6-3-9(7-11(12)13(18)19)15-14-8-1-4-10(5-2-8)16(20)21/h1-7,17H,(H,18,19)/b15-14+
  • Risk Statements: S24/25
  • Molecular Formula: C13H9N3O5
  • Molecular Structure:CAS No:2243-76-7 Mordant Orange 1

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References of Mordant Orange 1
Title: Alizarine Yellow R
CAS Registry Number: 2243-76-7
CAS Name: 2-Hydroxy-5-[(4-nitrophenyl)azo]benzoic acid
Synonyms: 5-(p-nitrophenylazo)salicylic acid; p-nitrobenzeneazosalicylic acid; Alizarine Yellow RW; C.I. Mordant Orange 1; C.I. 14030
Molecular Formula: C13H9N3O5
Molecular Weight: 287.23
Percent Composition: C 54.36%, H 3.16%, N 14.63%, O 27.85%
Literature References: Prepd by coupling diazotized p-nitroaniline with salicylic acid: Armento, US 2746955 (1956 to General Aniline and Film); Colour Index vol. 4 (3rd ed., 1971) p 4058.
Properties: Orange-brown needles from dil glacial acetic acid, dec 253-254°. Sol in water, alc; slightly sol in acetone, Cellosolve; practically insol in other org solvents.
 
Derivative Type: Sodium salt
Synonyms: Mordant Yellow 3R
Molecular Formula: C13H8N3NaO5
Molecular Weight: 309.21
Percent Composition: C 50.50%, H 2.61%, N 13.59%, Na 7.44%, O 25.87%
Properties: Brownish yellow powder. Sol in water.
 
Use: Sodium salt used as indicator in 0.1% aq soln pH: yellow to red, range 10.2 to 12.0.