Pigment Red 38

颜料红38

Also known as: C.I. Pigment Red 38, C.I. 21120, Benzidine Red, Diethyl 4,4'-[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[4,5-dihydro-5-oxo-1-phenyl-1H-pyrazole-3-carboxylate], Pyrazolone Red, Vulcan Fast Red B, Irgaplast Red P, Symuler Fast Pyrazolone Red B, Rubber Fast Red B, Silotermo Red B, Piper Red, Pyrazolone Red Y, ethyl 4-[[2-chloro-4-[3-chloro-4-[(3-ethoxycarbonyl-5-oxo-1-phenyl-4H-pyrazol-4-yl)diazenyl]phenyl]phenyl]diazenyl]-5-oxo-1-phenyl-4H-pyrazole-3-carboxylate

Pigment Red 38 (CAS 6358-87-8) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C36H28Cl2N8O6 and a molecular weight of 739.56400 g/mol. It is also known as C.I. Pigment Red 38, C.I. 21120 and Benzidine Red. Key properties include a melting point of 173 - 178ºC, a boiling point of 819.5ºC at 760 mmHg, a density of 1.45 g/cm3 and a flash point of 449.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

6358-87-8

Jingsj CID

J-1166966-5

Molecular Formula

C₃₆H₂₈Cl₂N₈O₆

Chinese Name

颜料红38

Molecular Weight

739.56400 g/mol

Category

Organic Compounds

Last updated

8/21/2026