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sodium sulphate anhydrous
sodium sulphate 99%
  • sodium sulphate 99%

  • classification:sodium sulphate anhydrous
  • Release time:2019-8-26 10:13:21
  • brand:
  • market price:$100.00
  • Membership:$90.00
  • Brief:

    Anhydrous sodium sulfate, known as the rare mineral thenardite, used as a 
    drying agent in organic synthesis.
    Heptahydrate sodium sulfate, a very rare form.

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sodium sulphate anhydrous 99% Applications

Another formerly major use for sodium sulfate, notably in the US and Canada, is in the Kraft process for the manufacture of wood pulp. Organics present in the "black liquor" from this process are burnt to produce heat, needed to drive the reduction of sodium sulfate to sodium sulfide. However, due to advances in the thermal efficiency of the Kraft recovery process in the early 1960s, more efficient sulfur recovery was achieved and the need for sodium sulfate makeup was drastically reduced. Hence, the use of sodium sulfate in the US and Canadian pulp industry declined from 1.4 Mt/a in 1970 to only approx. 150,000 tonnes in 2006.Commodity industries.

With US pricing at $30 per tonne in 1970,6 up to $90 per tonne for salt cake quality and $130 for better grades, sodium sulfate is a very cheap material. The largest use is as filler in powdered home laundry detergents, consuming approx. 50% of world production. This use is waning as domestic consumers are increasingly switching to compact or liquid detergents that do not include sodium sulfate.

The glass industry provides another significant application for sodium sulfate, as second largest application in Europe. Sodium sulfate is used as a fining agent, to help remove small air bubbles from molten glass. It fluxes the glass, and prevents scum formation of the glass melt during refining. The glass industry in Europe has been consuming from 1970 to 2006 a stable 110,000 tonnes annually.

Sodium sulfate is important in the manufacture of textiles, particularly in Japan, where it is the largest application. Sodium sulfate helps in "levelling", reducing negative charges on fibres so that dyes can penetrate evenly. Unlike the alternative sodium chloride, it does not corrode the stainless steel vessels used in dyeing. This application in Japan and US consumed in 2006 approximately 100,000 tonnes.

Thermal storage

The high heat storage capacity in the phase change from solid to liquid, and the advantageous phase change temperature of 32 °C (90 °F) makes this material especially appropriate for storing low grade solar heat for later release in space heating applications. In some applications the material is incorporated into thermal tiles that are placed in an attic space while in other applications the salt is incorporated into cells surrounded by solar–heated water. The phase change allows a substantial reduction in the mass of the material required for effective heat storage (the heat of fusion of sodium sulfate decahydrate is 82 kJ/mol or 252 kJ/kg), with the further advantage of a consistency of temperature as long as sufficient material in the appropriate phase is available.

For cooling applications, a mixture with common sodium chloride salt (NaCl) lowers the melting point to 18 °C (64 °F). The heat of fusion of NaCl·Na2SO4·10H2O, is actually increased slightly to 286 kJ/kg.


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Tianjin Damon International Trade Co.,Ltd. is an integrated company engaging in manufacturing and trading.Damon located in Tianjin Economic-Technological Development Area (TEDA) nearby the largest port in Northern China-Tianjin Xingang Port and possesses advantaged geographic position.Our main products are Sodium Sulphide,Sodium Hydrosulphide,Sodium sulphate anhydrous and Sodium Formate,etc. With the high quality products and professional service, products are exported to Southeast Asia, Africa, Middle East and Europe and other countries and regions,get highly trust and praise from domestic and foreign customers.  


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