CI 23790

Product Name
CI 23790
CAS No.
2150-54-1
Chemical Name
CI 23790
Synonyms
CI 23790;DIANIL BLUE B;C.I. Direct Blue 25;dianilbluebc.i.no.23790;Direct blue 25 (C.I. 23790);5-dihydroxy-is(azo)]bis[tetrasodiumsalt;2,7-naphthalenedisulfonicacid,3,3’-[(3,3’-dimethyl[1,1’-biphenyl]-4,4’-diyl)b;tetrasodium 3,3'-[(3,3'-dimethyl[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[4,5-dihydroxynaphthalene-2,7-disulphonate];3,3'-[(3,3'-Dimethyl-1,1'-biphenyl-4,4'-diyl)bis(azo)]bis[4,5-dihydroxy-2,7-naphthalenedisulfonic acid]tetrasodium salt;2,7-Naphthalenedisulfonic acid, 3,3'-[(3,3'-dimethyl[1,1'- biphenyl]-4,4'-diyl)bis(azo)]bis[4,5-dihydroxy-, tetrasodium salt
CBNumber
CB7286104
Molecular Formula
C34H22N4Na4O16S4
Formula Weight
962.77
MOL File
2150-54-1.mol
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CI 23790 Property

EPA Substance Registry System
C.I. Direct Blue 25, tetrasodium salt (2150-54-1)
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Hazard and Precautionary Statements (GHS)

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CI 23790 Chemical Properties,Usage,Production

General Description

Deep purple-blue powder.

Air & Water Reactions

Azo dyes can be explosive when suspended in air at specific concentrations. Slightly water soluble.

Reactivity Profile

CI 23790 is an azo compound. Azo, diazo, azido compounds can detonate. This applies in particular to organic azides that have been sensitized by the addition of metal salts or strong acids. Toxic gases are formed by mixing materials of this class with acids, aldehydes, amides, carbamates, cyanides, inorganic fluorides, halogenated organics, isocyanates, ketones, metals, nitrides, peroxides, phenols, epoxides, acyl halides, and strong oxidizing or reducing agents. Flammable gases are formed by mixing materials in this group with alkali metals. Explosive combination can occur with strong oxidizing agents, metal salts, peroxides, and sulfides. Cleavage of the diazo group by reducing agents may lead to benzidine production.

Fire Hazard

Flash point data for CI 23790 are not available; CI 23790 is probably combustible.

CI 23790 Preparation Products And Raw materials

Raw materials

Preparation Products

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2150-54-1, CI 23790Related Search:


  • 2,7-naphthalenedisulfonicacid,3,3’-[(3,3’-dimethyl[1,1’-biphenyl]-4,4’-diyl)b
  • 5-dihydroxy-is(azo)]bis[tetrasodiumsalt
  • CI 23790
  • DIANIL BLUE B
  • tetrasodium 3,3'-[(3,3'-dimethyl[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[4,5-dihydroxynaphthalene-2,7-disulphonate]
  • dianilbluebc.i.no.23790
  • C.I. Direct Blue 25
  • Direct blue 25 (C.I. 23790)
  • 2,7-Naphthalenedisulfonic acid, 3,3'-[(3,3'-dimethyl[1,1'- biphenyl]-4,4'-diyl)bis(azo)]bis[4,5-dihydroxy-, tetrasodium salt
  • 3,3'-[(3,3'-Dimethyl-1,1'-biphenyl-4,4'-diyl)bis(azo)]bis[4,5-dihydroxy-2,7-naphthalenedisulfonic acid]tetrasodium salt
  • 2150-54-1
  • Organics