Direct Blue 218

直接蓝218

Also known as: C.I. Direct Blue 218, C.I. 24401, Direct Blue 218 (Technical Grade), Tetrasodium [μ-[[3,3'-[(3,3'-dihydroxy[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[5-amino-4-hydroxynaphthalene-2,7-disulphonato]](8-)]]dicuprate(4-), [3,3'-[(3,3'-Dihydroxy-1,1'-biphenyl-4,4'-diyl)bis(azo)bis(5-amino-2,7-naphthalenedisulfonato-(O4,O3)]]dicopper, tetrasodium salt, Cuprate(4-), μ-[[3,3'-[(3,3'-dihydroxy[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[5-amino-4-hydroxy-2,7-naphthalenedisulfonato]](8-)]]di-, tetrasodium, Cuprate, [μ-[[3,3'-[(3,3'-dihydroxy[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[5-amino-4-hydroxy-2,7-naphthalenedisulfonato]]]]di-, tetrasodium, EINECS 249-008-8

Direct Blue 218 (CAS 28407-37-6) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C32H16Cu2N6O16S4.4Na and a molecular weight of 1087.811 g/mol. It is also known as C.I. Direct Blue 218, C.I. 24401 and Direct Blue 218 (Technical Grade). No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

28407-37-6

Jingsj CID

J-1386201-1

Molecular Formula

C₃₂H₁₆Cu₂N₆O₁₆S₄₄Na

Chinese Name

直接蓝218

Molecular Weight

1087.811 g/mol

Category

Organic Compounds

Last updated

8/21/2026