| Identification | Back Directory | [Name]
disodium 3-ethyl 4,5-dihydro-5-oxo-4-[(4-sulphonato-1-naphthyl)azo]-1-(4-sulphonatophenyl)-1H-pyrazole-3-carboxylate | [CAS]
15139-76-1 | [Synonyms]
orange B
C.I.19235
Orange 137
C.I.Acid Orange 137
C.I.Acid Orange 137:C.I.19235
disodium 3-ethyl 4,5-dihydro-5-oxo-4-[(4-sulphonato-1-naphthyl)azo]-1-(4-sulphonatophenyl)-1H-pyrazole-3-carboxylate
disodium 3-ethyl 4,5-dihydro-5-oxo-4-[(4-sulphonato-1-naphthyl)azo]-1-(4-sulphonatophenyl)-1H-pyrazole-3-carboxylate
Sodium (E)-4-[[3-(Ethoxycarbonyl)-5-oxo-1-(4-sulfonatophenyl)-4,5-dihydro-4-pyrazolyl]diazenyl]naphthalene-1-sulfonate
4,5-Dihydro-5-oxo-4-[[4-(sodiooxysulfonyl)-1-naphthyl]azo]-1-[4-(sodiooxysulfonyl)phenyl]-1H-pyrazole-3-carboxylic acid ethyl
4,5-Dihydro-5-oxo-4-[[4-(sodiooxysulfonyl)-1-naphtyl]azo]-1-[4-(sodiooxysulfonyl)phenyl]-1H-pyrazole-3-carboxylic acid ethyl ester | [EINECS(EC#)]
239-201-5 | [Molecular Formula]
C22H16N4Na2O9S2 | [MOL File]
15139-76-1.mol | [Molecular Weight]
590.493 |
| Hazard Information | Back Directory | [Uses]
In coloring sausage and frankfurter casings. | [Preparation]
Phenylhydrazine-4-sulfonic acid?and 2-Hydroxymaleic acid?ethyl ester derivatives of the sodium reaction, and partly hydrolysis, lost a ethyl, finally and diazo of 4-Aminonaphthalene-1-sulfonic acid matches. | [Properties and Applications]
dark orange. The strong sulfuric acid for purple, diluted into red; In strong hydrochloric acid for red; In 10% of sodium hydroxide solution for yellow orange, yellow light is palm diluted.
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