supply sodium sulfide

Description

Products name: Sodium Sulphide, Sodium Sulfide

Molecular Formula: Na2S
Specification: *0%
CAS NO. ********2
H.S.CODE: *******0
UN NO.: ***9
RED FLAKES:
1、Na2S: *0%min;Na2CO3: 5.0%max;Water insoluble: 0.*0%max;Fe:***0ppm max.
2、Na2S: *0%min;Na2CO3: 2.0%max;Water insoluble: 0.*0%max;Fe: **0ppm max.
3、Na2S: *0%min;Na2CO3: 2.0%max;Water insoluble: 0.*0%max;Fe: *0ppm max.
LOW IRON ( YELLOW FLAKES):
1、Na2S: *0%min;Na2CO3: 2.0%max;Water insoluble: 0.*0%max;Fe: *0ppm max/*0ppm max.
2、Na2S: *0%min;Na2CO3: 1.8%max;Water insoluble: 0.*3%max;Fe: *5/*0ppm max
3、Na2S: *0%min;Na2CO3: 1.7%max;Water insoluble: 0.*2%max;Fe: 5ppm max 
Character: Solid-fused or granular, brown red color, soluble in water, presenting strong alkaline solution, easily oxidized when exposed to air, poisonus.
Used as making sulphur dyes or dyestuff intermediate reducer, mordant, flotation agent, depilatory for leather, digestion auxiliary in paper-making. also widely in pigment and rubber industry, etc.