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Direct Scarlet Red 4BE, Congo Red

Inquiry
  Post Date: Aug 19,2015
  Expiry Date: Aug 18,2016
  Detailed Description: Cas No. :573-58-0 Quantity: 50000Kilograms
Price:4 USD Kilograms
Payment Method: TT/LC
Direct Red 28 (Direct Congo Red 4B):
1) CAS no.: 573-58-0
2) Appearance: red powder
3) Light fastness: 3
4) Acid resistance: 3-4
5) Alkali resistance: 3-4
6) Water fastness: 2
7) Wash fastness: 2
8) Used for: cotton, silk, paper

  CAS Registry Number:

573-58-0

  Synonyms: C.I. 22120;C.I. Direct Red 28;C.I. Direct Red 28, disodium salt;C.I. Direct Red 28, disodium salt (8CI);Congo red;Direct Red 28;Congo red (0.1% in water)[for titration];Congo red (0.1% in water);Direct Scarlet 4B;disodium 3,3'-[biphenyl-4,4'-diyldi(E)diazene-2,1-diyl]bis(4-aminonaphthalene-1-sulfonate);disodium 4-amino-3-[4-[4-[(1-amino-4-sulfonato-2-naphthyl)azo]phenyl]phenyl]azo-naphthalene-1-sulfonate;Direct Red 28;
  Molecular Formula: C32H22N6Na2O6S2
  Molecular Weight: 696.6632
  Molecular Structure: 573-58-0 Congo Red
  Hazard Symbols:  T:Toxic;
  Risk Codes: R45:;
R63:;
  Safety Description: S45:;
S53:;

  Company: Hebei Caiyi Imp&Exp Trade Co.,Ltd.         
  Contact: Dane Zhang
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