Sodium sulfide Yellow flake or Red flake

Sodium sulfide

[ Molecular Formula ] : Na2S

[EINECS] : 215-211-5

[Cas No]. 1313-82-2

[Molecular Weight]: 78.03 
[Appearance]: Yellow flake or Red flake 

[HS code]:2832.10

[Toxicity]:Oral Rat LD50: 208 mg/kg

[Specific Gravity]:1.86

[Solubility in water]: Soluble (slightly soluble in alcohol)

[PH]: Alkaline

[Stability]: Stable under ordinary conditions. Oxidizes in air

[General Applications]:Sodium Sulfide is a yellow to red solid;soluble in water,slightly soluble in alcohol.It is a strong reducing agent and reacts with oxidants. It is primaily used in pulp and paper industry;It is used in water treadment as an oxygen scavenger agent,in the photographic industry to protect developer solutions from oxidation,in textile industry as a bleaching as a desulfurizing and as a dechlorinating agent and in leather trade for the sulfitization of tanning extracts. It is used in chemical manufacturing as a sulfonation and sulfomethylation agent.it is used in the production of rubber chemicals, sulfur dyes and other chemical compounds.Its used in other applications include ore flotation,oil recovery,food preservative, making dyes and detergent.

[Packages]25kgsBags

Two grade:

Grade 1

Apperance    red flakes

Na2S         60% min

Na2CO3      2.0% max

Fe           150ppm max

Water Insolubles 0.5% max

Grade 2

Apperance    yellow flakes

Na2S         60% min

Na2CO3      2.0% max

Na2S2O3     2.05 max

Fe           30ppm max

Water Insolubles 0.5% max

Update Date:2011-7-1 20:01:35