Sodium sulfide containing low iron

Product Name: Sodium sulfide containing low iron, common name: yellow flake caustic
Property: Mixture with different water of crystallization. Appearance is yellow flake, with bad odor, it is corrosive and toxic. Soluble in water, slightly soluble in alcohol, is should be stored in shading and cool place.
Packing: 25kg/bag. Lining is plastic woven bag, stitch it up on a machine; the interlayer is plastic film, hot sealing; outside is grey woven bag, stitch it up on a machine.
Precautions: Protect from rain, damp, heat during transportation and storage, avoid contacting with acid and corrosive articles.


Use: Mainly used in pharmaceutical, high-grade paper, PPS engineering plastic, leather, dyeing and printing, ore dressing and other industries
      I. In dye industry, it can be used in the production of sulfur dye, it is raw material for sulphur black and sulphur blue
      II. In dyeing and printing industry, it can be used as dyeing auxiliary.
      III. In leather industry, it can be used for the preparation of multi-sodium sulfide. In papermaking industry, as cooking reagent for paper.
      IV. In textile industry, it can be used as mordant for cotton fabrics.
      V. In pharmaceutical industry, it is used in the production of phenacetin, etc. Moreover, it can also be used in the production of sodium thiosulfate and sodium hydrosulfide, etc.

Item Index
  Superior First Class Qualified
Sodium sulfide (Na2S), ω/% ≥ 60 60 60
Iron (Fe), ω/ppm ≤ 20 30 50
Water insoluble matter, ω/% ≤ 0.02 0.03 0.05
Sodium carbonate, ω/% ≤ 1.5 2.0 3.0
Appearance Yellow flake, with uniform size, non-caking