Sodium sulfate, inorganic compounds, sodium sulfate decahydrate, also known as mirabilite, high purity, fine particles of water called yuan Ming powder. Yuan Ming powder, white, odorless, bitter taste of the crystallization or powder, there is hygroscopicity. Shape is colorless, transparent, large crystal or small particles of small crystals. Mainly used for water glass, glass, enamel, pulp, refrigeration mix, detergent, desiccant, dye thinner, analytical chemical reagents, pharmaceuticals and so on.
Appearance and traits: monoclinic crystal, crystal short columnar, aggregates were dense block or shell-like, colorless and transparent, sometimes with light yellow or green, soluble in water. White, odorless, bitterly crystalline or powdery, hygroscopic. Shape is colorless, transparent, large crystal or small particles of small crystals.
Solution: The sodium sulfate solution is a colorless solution.
Melting point: 884 °C (heptahydrate is anhydrous at 24.4 °C, decalcitate is 32.38 °C, 10H2O at 100 °C)
Solubility:
| Temperature | 0℃ | 10℃ | 20℃ | 30℃ | 40℃ | 50℃ | 60℃ | 70℃ | 80℃ | 90℃ | 100℃ |
| Solubility | 4.9 | 9.1 | 19.5 | 40.8 | 48.8 | 46.2 | 45.3 | 44.3 | 43.7 | 42.7 | 42.5 |
| Crystal water | 24°C以下7H2O | 32.4°C以下10H2O | Anhydrous sodium sulfate1H2O | ||||||||
Boiling point: 1404 °C Relative density: 2.68 g/cm
Solubility: insoluble in ethanol, soluble in water, soluble in glycerol.
Other properties: BaCl2 + Na2SO4 = BaSO4 ↓ + 2NaCl; sodium sulfate is strong acid and strong acid salt.
The main purpose
1, the chemical industry for the manufacture of sodium sulfide sodium silicate water glass and other chemical products.
2, the paper industry for the manufacture of sulfate pulp when the cooking agent.
3, the glass industry to replace soda ash to help the solvent.
4, the textile industry for the deployment of vinylon spinning coagulant.
5, for non-ferrous metal metallurgy, leather and so on.
6, used to make sodium sulfide, pulp, glass, water glass, enamel, also used as laxatives and barium salt poisoning antidote. Is a by-product when hydrochloric acid is made from salt and sulfuric acid. Chemical used in the manufacture of sodium sulfide, sodium silicate and so on. The laboratory is used to wash away barium salts. Industrial for the preparation of NaOH and H ?SO? raw materials, but also for paper, glass, printing and dyeing, synthetic fiber, leather and so on. In organic synthesis laboratory sodium sulfate is one of the most commonly used post-treatment desiccants.
7, mainly used as a filler for synthetic detergents. The papermaking industry is used in the manufacture of sulphate pulp. The glass industry is used instead of soda ash. The chemical industry is used as a raw material for the manufacture of sodium sulfide, sodium silicate and other chemical products. Textile industry for the deployment of vinylon spinning coagulation bath. The pharmaceutical industry is used as a laxative. Also used for nonferrous metallurgy, leather and so on.
8, so that hydrated products of calcium sulphoaluminate faster generation, thus accelerating the cement hydration hardening speed. The content of sodium sulfate is generally 0.5% ~ 2% of the cement quality, can improve the early strength of concrete 50% to 100%, 28 days strength sometimes increased, sometimes reduced, the increase rate of about 10%, with the cement varieties, curing conditions And its content varies. Also used as a filler for synthetic detergents, but also for the paper industry, glass industry, chemical industry, textile industry and pharmaceutical industry.
9, used as analytical reagents, such as dehydrating agent, nitrogen digestion catalyst, atomic absorption spectrometry analysis of interference inhibitors. Also used in the pharmaceutical industry.
10, used in chemical, paper and glass, dyes, printing and dyeing and pharmaceutical industry, in the synthetic fiber, leather, nonferrous metallurgy, enamel and other manufacturing also used in detergent and soap as additives.
11, in the sulfate galvanized can be used as a buffer to stabilize the bath of the ph value.
