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Sodium Sulphate Anhydrous

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  Post Date: Mar 12,2010
  Expiry Date: Sep 08,2010
  Detailed Description: Cas No. :7757-82-6
Sodium Sulphate Anhydrous
Synonyms: Disodium monosulfate; Sulfuric acid, Sodium salt; Disodium sulfate; Sodium sulfate; Sulfuric acid, sodium salt; Sulfuric acid, Disodium salt;Sulfuric acid disodium salt; Salt cake; Bisodium sulfate; Sodium sulfate (2:1); Thenardite; Natriumsulfat; Trona;

Molecular Formula: Na2SO4

Molecular Weight:: 142.04

Cas No.: 7757-82-6



Melting Point: 880 - 888 C

Boiling Point: 1100 C (Decomposes)

Specific Gravity: 2.66 - 2.75

pH : aqueous solution is neutral

HS Code: 2833110000

Standard Executed: GB/T6009-2003






Items
Specifications

APPEARANCE
white powder

Na2SO4
99.0% min

WATER INSOLUBLES
0.05% max

Mg
0.15% max

Cl
0.35% max

Fe
0.002% max

pH
Neutral to slightly alkaline

MOISTURE
0.2% max

Whiteness
80%min

Particle Size
50%(100mesh)





Properties:




Sodium sulfate is a white, orthorhombic crystalline solid at room temperatures ( a monoclinic structure at > 100 C, a hexagonal structure at > 250C). It is reduced to sodium sulfide at high temperature. But sodium sulfate is a stable compound which does not decompose and does not react with oxidising or reducing agents at normal temperatures. It is neutral (pH of 7) in water. Sodium sulfate is most soluble in water at 32.4 C (49.7g/100 g).



Applications:



1.Commercial major source of sodium sulfate is salt cake (impure sodium sulfate), a by-product of hydrochloric acid production from sodium chloride by treatment with sulfuric acid.

2. Sodium sulfate is obtained also as a byproduct of rayon production and sodium dichromate production. The decahydrate is known as Glauber's salt. About half of the world's production is from the natural mineral form of the decahydrate (mirabilite). Anhydrous sodium sulfate is found in nature as the mineral thenardite (Na2SO4).

3. Sodium sulfate is consumed in four major categories; powder detergents as a processing aid and as a filler, wood pulp processing for making kraft paper, textile dyeing processes as a levelling agent to penetrate evenly, and molten glass process to remove small air bubbles.

4. Sodium sulfate is employed also as a raw material for the production of various chemicals.





Packing:





50kg P.P Woven bags, 20MT in the 20’FCL



  Company: SHIJIAZHUANG FENGHAI IMP.&EXP. CO.,LTD           
  Contact: Anna Jia
  Tel: 86-0311-85279382
  Fax: 86-0311-86545232
  Email: Alison@feohi.com
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