Chemical Name : Sodium6,6'-ureylene bis(1,1'-naphthol)3,3'-sulfo
Synonyms：
2-Naphthalenesulfonic acid, 7,7'-ureylenebis[4-hydroxy-(8CI);
CARBONYL J ACID
5,5 DIHYDROXY 7,7 DISULFONIC 2,2 DINAPHTHYL UREA
SCARLET ACID
CAS NO. :134-47-4
Structural Formule:
M.F.:C21H16O9N2S2
M.W.: 504.50
Use: Used as azo medium. Mainly used for the preparation of direct Orange S and direct acid-proof bright-red 4BS
Packing: 25kg -plastic-woven bag
Specfication:
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INDEX\TYPE
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DRY POWDER
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APPEARANCE
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GREY-WHITE POWDER
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CONTENT
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80% MIN.
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FREE J ACID
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0.2% MAX.(HPLC)
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INSOLUBLE MATTER
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0.2% MAX.
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CHLORIDE
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5% MAX.
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