Basic Information
| Name | Sodium Sulfate Anhydrous |
| CAS Number | 7757-82-6 |
| EINECS Number | 231-820-9 |
| Molecular weight | 142.04 g/mol |
| Chemical formula | Na2SO4 |
| Melting point | 888 °C |
| boiling range | 108.9 °C |
| Density | 2.70 g/cm3 at 20 °C |
| Regulatory information | Unregulated |
Physical data:The main purpose
1.Appearance: Form: crystalline
Color: white
2.Odor:odorless
3.pH: 5.2 - 8.0 at 50 g/l at 20 °C
4.Flammability:The product is not flammable
5.Water solubility:445.5 g/l at 20 °C - OECD Test Guideline 105- completely
soluble
6.Decomposition
temperature:> 890 °C
The main purpose
1.chemical industry used for the manufacture of sodium sulfide sodium silicate water glass and other chemical products.
2.paper industry used in the manufacture of kraft pulp cooking agent.
3.glass industry to replace soda as a cosolvent.
4.the textile industry is used to deploy Vinylon spinning coagulant.
5.used in nonferrous metal metallurgy, leather and other aspects.
6.chemical used in the manufacture of sodium sulfide, sodium silicate, etc.
7.The laboratory is used to wash away barium salt.
8.industrial used for NaOH and H2SO4 raw materials, also used in paper, glass, printing and dyeing, synthetic fiber, leather, etc.
9.Used as filler for synthetic detergent.
10.the pharmaceutical industry used as a laxative.
11.so that the hydration product calcium sulphate faster generation, thus speeding up the hydration hardening speed of cement. Sodium sulfate content is generally 0.5% ~ 2% of cement quality, can improve the early strength of concrete 50% ~ 100%.
12.used as analytical reagents, such as dehydrating agent, digestion catalyst when fixing nitrogen, interference inhibitor in atomic absorption spectrometry analysis.
13.in sulfate galvanized can be used as buffer to stabilize the pH value of the bath.
Storage method
Tightly closed. Dry.