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Direct Red 28 (573-58-0)

Identification
Name:Direct Red 28
Synonyms:1-Naphthalenesulfonicacid, 3,3'-[[1,1'-biphenyl]-4,4'-diylbis(azo)]bis[4-amino-, disodium salt(9CI);C.I. Direct Red 28, disodium salt (8CI);Atlantic Congo Red;Atul CongoRed;Azocard Red Congo;Benzo Congo Red;Brasilamina Congo 4B;C.I. 22120;C.I.Direct Red 28;Congo Red 4B;Congo Red 4BX;Congo Red CR;Congo Red H;Congo Red N;Congo Red R;Congo Red RS;CongoRed TS;Congo Red W;Congo Red WS;Congo Red sodium salt;
CAS:573-58-0
EINECS: 209-358-4
Molecular Formula: C32H22N6Na2O6S2
Molecular Weight: 696.66
InChI: InChI=1/C32H24N6O6S2.2Na/c33-31-25-7-3-1-5-23(25)29(45(39,40)41)17-27(31)37-35-21-13-9-19(10-14-21)20-11-15-22(16-12-20)36-38-28-18-30(46(42,43)44)24-6-2-4-8-26(24)32(28)34;;/h1-18H,33-34H2,(H,39,40,41)(H,42,43,44);;/q;2*+1/p-2/b37-35+,38-36+;;
Molecular Structure: (C32H22N6Na2O6S2) 1-Naphthalenesulfonicacid, 3,3'-[[1,1'-biphenyl]-4,4'-diylbis(azo)]bis[4-amino-, disodium salt(9CI);...
Properties
Transport:2811
Density:1
Stability:Stable. Incompatible with strong oxidizing agents.
Water Solubility:soluble
Solubility:soluble in water
Appearance:brown-red powder
Specification:

?Congo red (CAS NO.573-58-0) is also named as 1-Naphthalenesulfonic acid, 3,3'-((1,1'-biphenyl)-4,4'-diylbis(azo))bis(4-amino-, disodium salt ; AI3-63036 ; Atlantic Congo Red ; Atul Congo Red ; Azocard Red Congo ; Benzo Congo Red ; Brasilamina congo 4B ; C.I. 22120 ; C.I. Direct Red 28 ; C.I. Direct Red 28, disodium salt ; CCRIS 2277 ; Cerven kongo ;
Diacotton Congo Red ; Direct Red 28 ; Direct Red C ; Direct Red DC-CF ; Direct Red K ; Hispamin congo 4B ; Mitsui Congo Red ; NSC 56651 ; NSC 7232 ; Natrium-salz der diphenyl-bis-azo-bis-naphthylamin-4-sulfonsaeure ; Natrium-salz der diphenyl-bis-azo-bis-naphthylamin-4-sulfonsaeure [German] ; Peeramine Congo Red ; Red K ; Sodium diphenyldiazo-bis(alpha-naphthylaminesulfonate) ; Solucongo ; Sugai Congo Red ; Tertrodirect Red C ; Trisulfon Congo Red ; UNII-3U05FHG59S ; Vondacel Red CL?.?Congo red (CAS NO.573-58-0) is brown-red powder.?It is soluble in hot water, the?solution is yellowish red; soluble in ethanol,?solution is?orange; very slightly soluble in acetone, almost insoluble in ether.

Report:

Reported in EPA TSCA Inventory.

Storage Temperature: Flammables area
Color: BROWNISH-RED POWDER; IN WATER YELLOWISH-RED & IN ETHANOL ORANGE
Safety Data
Hazard Symbols T:Toxic
 

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