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Sodium sulfate (sodium sulfate)

Sodium sulfate (sodium sulfate)

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Ukraine, Kharkov
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17 years on Allbiz
Technical characteristics
  • Country of manufactureChina
  • Pre-packing50 kg
Sodium sulfate, sodium sulfate - crystallizational sodium sulfate turns out in viscose production at interaction of sulphuric acid with caustic soda or sodium salts. Sodium sulfate represents colourless crystals or powder of white color, we will dissolve in water, does not slezhivatsya, malogigroskopichen. Meets in the nature in the form of thenardite mineral. Anhydrous sodium sulfate is steady higher than temperature of 32 °C, below this temperature crystallizes. In the nature this crystalline hydrate forms mineral mirabilite (glauber salt).

Sodium sulfate technical GOST 6318 - 77 is received from natural galurgichesky raw materials. Depending on method of receiving and range of application technical sodium sulfate is let out brands A (the highest, the first and second grades) and B.
And - the product received by industrial methods, the highest and first grades intends for the pulp - and - paper, chemical, glass industry and other purposes.
The B - the product received under natural conditions intends as well as product of the second grade of brand But only for the glass industry.

Chemical formula: Na2SO4.

Sodium sulfate as one of the main components of furnace charge in production of glass is applied; when processing wood (sulfite digestion of cellulose), when dyeing cottons, for receiving viscose silk, different chemical compounds - silicate and sodium sulfide, ammonium sulfate, soda, sulphuric acid. It is applied in construction as antifrosty additive and the accelerator of skhvatyvaniye of concrete mix. Also sodium sulfate is applied in production of synthetic detergents; solutions of sodium sulfate are used as heat accumulator in the devices keeping solar energy.

Physical and chemical indicators of technical sodium sulfate

Name of indicator Norm for brand and grade
And B
The highest The first The second
1. Appearance Powder or granules of white color, is allowed grayish shade. Powder of white color, is allowed grayish shade.
2. Mass fraction of sodium sulfate (Na2SO4), % , not less 99.4 98.0 97.0 94.0
3. Mass fraction of the water - insoluble rest, % , no more 0.4 0.9 1.2 4.5
4. Mass fraction of chlorides in terms of sodium chloride (NaCl), % , no more 0.2 0.7 1.2 2.0
5. Mass fraction of calcium sulfate (CaSO4), % , no more - - - 1.0
6. Mass fraction of ions of magnesium (Mg2 + ), % , no more 0.02 0.10 0.20 -
7. Mass fraction of iron in terms of Fe2O3, % , no more 0.010 0.015 0.030 0.030
8. Mass fraction of water, % , no more 0.1 1.0 4.0 7.0

Sodium sulfate technical (sodium sulfate) GOST 6318 - 77. Safety requirements.

Danger class 4
Main properties and types of danger
Main properties Powder or granules of white color, is allowed grayish shade.
Vzryvo - and fire danger It is fire and explosion - proof. Pylevozdushny mix is not explosive.
Danger to the person
Means of individual protection Overalls. Antidust respirators of the Petal - 5 ShB - 1 type.
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