| Identification | Back Directory | [Name]
disodium 8,8'-[[1,1'-biphenyl]-4,4'-diylbis(azo)]bis(7-hydroxynaphthalene-1-sulphonate) | [CAS]
2302-97-8 | [Synonyms]
CIDIRECTRED44
Direct Red 44
C.I. Direct bordeaux R
C.I.Direct Red 44:C.I.22500
disodium 8,8'-[[1,1'-biphenyl]-4,4'-diylbis(azo)]bis(7-hydroxynaphthalene-1-sulphonate)
disodium,(8Z)-7-oxo-8-[[4-[4-[(2Z)-2-(2-oxo-8-sulfonatonaphthalen-1-ylidene)hydrazinyl]phenyl]phenyl]hydrazinylidene]naphthalene-1-sulfonate | [EINECS(EC#)]
218-959-0 | [Molecular Formula]
C32H20N4Na2O8S2 | [MOL File]
2302-97-8.mol | [Molecular Weight]
698.633 |
| Hazard Information | Back Directory | [Preparation]
4-(4-Aminophenyl)benzenamine double nitriding, and 7-Hydroxynaphthalene-1-sulfonic acid (2 Moore) coupled. | [Properties and Applications]
dark red to blue light red violet. Soluble in water for product red to red light purple, slightly soluble in alcohol. The strong sulfuric acid for purple, diluted with light purple (a red); In nitric acid in red orange for solution. The dye solution to join strong hydrochloric acid for navy, precipitation; Add thick sodium hydroxide solution for red light brown, have precipitation. |
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