Сульфида натрия

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. [ Use ] : Dyeing Acrylic, Paper, Moisquito Coils,Leather, Silk, and can be used to for Paint and drawing.[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]25kgsBagsTwo grade:Grade 1Apperance red flakesNa2S 60% minNa2CO3 2.0% maxFe 150ppm maxWater Insolubles 0.5% maxGrade 2Apperance yellow flakesNa2S 60% minNa2CO3 2.0% maxNa2S2O3 2.05 maxFe 30ppm maxWater Insolubles 0.5% max