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Direct Red 31

Direct Red 31

/ CAS : 5001-72-9
Appearance Reddish brown powder. The water solubility is good. The aqueous solution is blue red. Add concentrated hydrochloric acid to produce jujube red precipitation, and add concentrated alkali to turn orange brown. Formula C32H21N5Na2O8S2 Molecular Mass 713.64700
HS 0.0 UN 0.0 DG Class 0.0
Synonyms 7,7'-Iminobis[4-Hydroxy-3-(Phenylazo)-2-Naphthalenesulfonic Aci Disodium Sa; Benzo Rhoduline Red B; C.I. Direct Red 31; Chloramine Rose B,Pyrazol Pink 2B; Disodium,(3E)-4-Oxo-7-[[(6E)-5-Oxo-6-(Phenylhydrazinylidene)-7-Sulfonatonaphthalen-2-Yl]Amino]-3-(Phenylhydrazinylidene)Naphthalene-2-Sulfonate; Diphenyl Red Rw; Direct Pink; Nippon Fast Red 2B
Manufacturer List
1 manufacturers found for "Direct Red 31"
Shandong Wuyang Chemical Co.,Ltd.
54 YRS
Shandong, China Manufacturing
Main Products: Direct Red 23 / Disodium 7,7'-(Carbonyldiimino)bis(4-Hydroxynaphthalene-2-Sulphonate) / Direct Yellow 96 / Direct Red 31 / Direct Blue 86 / J Acid / Rhoduline Acid / 2-Aminonaphthalene-1-Sulfonic Acid / 7-Anilino-4-Hydroxy-2-Naphthalenesulfonic Acid / P-Anisidine-3-Sulfonic Acid
Quality Certificates: -
Loading Port: Qingdao
Disodium,(3E)-4-Oxo-7-[[(6E)-5-Oxo-6-(Phenylhydrazinylidene)-7-Sulfonatonaphthalen-2-Yl]Amino]-3-(Phenylhydrazinylidene)Naphthalene-2-Sulfonate###Direct Red 31
Disodium,(3E)-4-Oxo-7-[[(6E)-5-Oxo-6-(Phenylhydrazinylidene)-7-Sulfonatonaphthalen-2-Yl]Amino]-3-(Phenylhydrazinylidene)Naphthalene-2-Sulfonate###Direct Red 31
99.0%
Disodium,(3E)-4-Oxo-7-[[(6E)-5-Oxo-6-(Phenylhydrazinylidene)-7-Sulfonatonaphthalen-2-Yl]Amino]-3-(Phenylhydrazinylidene)Naphthalene-2-Sulfonate###Direct Red 31
Disodium,(3E)-4-Oxo-7-[[(6E)-5-Oxo-6-(Phenylhydrazinylidene)-7-Sulfonatonaphthalen-2-Yl]Amino]-3-(Phenylhydrazinylidene)Naphthalene-2-Sulfonate###Direct Red 31
  • 99.0%
Inquiry
Disodium,(3E)-4-Oxo-7-[[(6E)-5-Oxo-6-(Phenylhydrazinylidene)-7-Sulfonatonaphthalen-2-Yl]Amino]-3-(Phenylhydrazinylidene)Naphthalene-2-Sulfonate###Direct Red 31
Disodium,(3E)-4-Oxo-7-[[(6E)-5-Oxo-6-(Phenylhydrazinylidene)-7-Sulfonatonaphthalen-2-Yl]Amino]-3-(Phenylhydrazinylidene)Naphthalene-2-Sulfonate###Direct Red 31
99.0%
Disodium,(3E)-4-Oxo-7-[[(6E)-5-Oxo-6-(Phenylhydrazinylidene)-7-Sulfonatonaphthalen-2-Yl]Amino]-3-(Phenylhydrazinylidene)Naphthalene-2-Sulfonate###Direct Red 31
Disodium,(3E)-4-Oxo-7-[[(6E)-5-Oxo-6-(Phenylhydrazinylidene)-7-Sulfonatonaphthalen-2-Yl]Amino]-3-(Phenylhydrazinylidene)Naphthalene-2-Sulfonate###Direct Red 31
  • 99.0%
Inquiry
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