Direct black 38

CAS: 1937-37-7

Ref. 3D-FD32915

Product Information

• Name: Direct black 38
• Synonyms: C.I. Direct Black 38, C.I. Direct Black 38, disodium salt (8CI), (3E)-5-amino-6-[(E)-{4'-[(E)-(2,4-diaminophenyl)diazenyl]biphenyl-4-yl}diazenyl]-4-oxo-3-(phenylhydrazono)-3,4-dihydronaphthalene-2,7-disulfonic acid, C.I. Direct Black 38, disodium (3Z)-5-amino-6-[(E)-{4'-[(E)-(2,4-diaminophenyl)diazenyl]biphenyl-4-yl}diazenyl]-4-oxo-3-(phenylhydrazono)-3,4-dihydronaphthalene-2,7-disulfonate, Chlorazol Black E, C.I. Direct Black 38, disodium salt, C.I. Direct Black 38, disodium salt, Azo black, 2,7-Naphthalenedisulfonic acid, 4-amino-3-[2-[4′-[2-(2,4-diaminophenyl)diazenyl][1,1′-biphenyl]-4-yl]diazenyl]-5-hydroxy-6-(2-phenyldiazenyl)-, sodium salt (1:2), 2,7-Naphthalenedisulfonic acid, 4-amino-3-[[4′-[(2,4-diaminophenyl)azo][1,1′-biphenyl]-4-yl]azo]-5-hydroxy-6-(phenylazo)-, disodium salt, C.I. 30235, disodium (3E)-5-amino-6-[(E)-{4'-[(E)-(2,4-diaminophenyl)diazenyl]biphenyl-4-yl}diazenyl]-4-oxo-3-(phenylhydrazono)-3,4-dihydronaphthalene-2,7-disulfonate

Description

Direct Black 38 (DB38) is a carbonate pigment with the chemical formula of Na2CO3. It has been used as a black pigment in paints, textiles, and plastics. DB38 has been shown to be genotoxic, meaning that it can cause mutations in cells by interacting with DNA. DB38 has also been shown to be toxic to animals and humans when ingested or inhaled at high concentrations. DB38 is not mutagenic, meaning that it does not cause genetic changes in cells or organisms. The toxicity of DB38 is dose-dependent: the higher the concentration of DB38, the more toxic it becomes.

• Brand: Biosynth

Chemical properties

• Molecular weight: 783.75 g/mol
• Formula: C₃₄H₂₇N₉O₇S₂·2Na
• Purity: Min. 95%
• Color/Form: Brown Powder