Fast Red B Salt Fast Colour Salts belongs to the category of Fast Colour Salts having CAS number 95-03-4. The synonym of Fast Red B Salt Fast Colour Salts is Fast Red B Salt. The molecular weight of Fast Red B Salt Fast Colour Salts is 194.06 g/mol and the molecular formula is C7H9Cl2NO. The colour index number is 37120. The physical appearance of Fast Red B Salt Fast Colour Salts is Grey.