SF:

  Properties : white or reddish crystalline powder ,
    soft , the decompose temperature is 166,
    insoluble in water and alcohol

  Usage : It is mainly used in dye industry,
    also applied in medicine, pesticide, it is the material
    of colorful film, plasitic foamer and initiating explosive.

Appearance: white or reddish crystalline powder

Properties	Value
	Super grade	Premium grade	First grade
Assay : ( dry )	%99	%98	97
Insoluble matter in acetic acid	%0.05	%0.05	0.1
Loss on dry	%0.2	%0.2	0.5
Residue on ignition	%0.09	%0.09	0.12
Chloride ( CL )	%0.05	%0.05	0.09
Sulfate ( SO4 )	%0.009	%0.009	0.02
Heavy metals ( Pb2+ )	%0.001	%0.001	0.06