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447390 Direct Blue 218 CAS: 28407-37-6

Specifications
References
CAS Number
28407-37-6
Grade
Purified
Molecular Formula
C₃₂H₁₆Cu₂N₆Na₄O₁₆S₄
Molecular Weight
1087.81
EU Commodity Code
38220090
UN DOT Shipping
UN3077 PGIII
Shipping Temp
RT
Storage Temp
4°C
[Tetrahydrogen-3,3'-[(3,3'-dihydroxy-4,4'-biphenylylene)bis(azo)]bis[5-amino-4-hydroxy-2,7-naphthalenedisulfonato](4-)]di-Copper Tetrasodium Salt;|[μ-[[3,3'-[(3,3'-Dihydroxy[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[5-amino-4-hydroxy-2,7-naphthalenedisulfonato]](8-)]]di-Cuprate(4-) Tetrasodium;|[μ-[[3,3'-[[3,3'-Di(hydroxy-κO)[1,1'-biphenyl]-4,4'-diyl]bis(azo-κN1)]bis[5-amino-4-(hydroxy-κO)-2,7-naphthalenedisulfonato]](8-)]]di-Cuprate(4-) Tetrasodium;|3,3'-[(3,3'-Dihydroxy[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[5-amino-4-hydroxy-2,7-Naphthalenedisulfonic Acid Copper Complex; Amanil Supra Blue 9GL; C.I. 24401; Carta Blue VP; Direct Blue 218; Fastusol Blue 9GLP; Intralite Blue 8GLL; Pontamine Bond Blue B; Pontamine Fast Blue 7GLN

Direct Blue 218 is an azo dye used in diagnostic imaging. Used in the prediction of rat carcinogenisis. Also used in textile dyes contributing to textile effluents and wastewaters. Environmental toxin on US EPA Toxic Release Inventory list (TRI) list.

Synonyms
[Tetrahydrogen-3,3'-[(3,3'-dihydroxy-4,4'-biphenylylene)bis(azo)]bis[5-amino-4-hydroxy-2,7-naphthalenedisulfonato](4-)]di-Copper Tetrasodium Salt; [μ-[[3,3'-[(3,3'-Dihydroxy[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[5-amino-4-hydroxy-2,7-naphthalenedisulfonato]](8-)]]di-Cuprate(4-) Tetrasodium; [μ-[[3,3'-[[3,3'-Di(hydroxy-κO)[1,1'-biphenyl]-4,4'-diyl]bis(azo-κN1)]bis[5-amino-4-(hydroxy-κO)-2,7-naphthalenedisulfonato]](8-)]]di-Cuprate(4-) Tetrasodium; 3,3'-[(3,3'-Dihydroxy[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[5-amino-4-hydroxy-2,7-Naphthalenedisulfonic Acid Copper Complex; Amanil Supra Blue 9GL; C.I. 24401; Carta Blue VP; Direct Blue 218; Fastusol Blue 9GLP; Intralite Blue 8GLL; Pontamine Bond Blue B; Pontamine Fast Blue 7GLN
CAS No
28407-37-6 Free Base: 289915-32-8
Molecular Formula
C₃₂H₁₆Cu₂N₆Na₄O₁₆S₄
Molecular Weight
1087.81
Purity
Purified
Appearance
Black solid
Solubility
DMSO (Slightly), Water (Slightly)
Method for Determining Identity
Proton NMR, FT-IR Spectrometric Analysis
TLC Conditions
C18; Acetonitrile: Acetic Acid=9:1; Visualized with AMCS and Naked Eye; Single Spot, Rf=0.75
Elemental Analysis
Calculated: %C: 35.33, %H: 1.48, %N: 7.73
Storage and Stability
May be stored at RT for short-term only. Long-term storage is recommended at 4ºC for 6 months after receipt.
References
Baughman, G. et al.: Textile. Chemist. Color. Am. Dye. Rep., 32, 51 (2000)
USBio References
No references available
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