Toxicity:
Toxicological data: mouse oral: LD50 5989mg/kg
Ecological data: slightly harmful to water. Do not discharge materials into the surrounding environment without permission.
In addition, Na2SO4 can also be dissolved in water as an electrolyte.
Main purpose editing
The chemical industry is used to manufacture sodium sulfide, sodium silicate, water glass and other chemical products.
The paper industry is used as a cooking agent in the manufacture of kraft pulp.
Glass industry is used to replace soda ash as cosolvent.
The textile industry is used to prepare vinylon spinning coagulant.
It is used in nonferrous metal metallurgy, leather, etc.
Sodium sulfate is widely used in vinylon, foam alkali, bleaching and dyeing, synthetic detergent, glass, paper making, tanning, oil and gas pipeline anti-corrosion, metal smelting, surface treatment, filler and other industries.
The scientific name of sodium sulfate, also known as saltcake, is white fine grain crystal or powder, hygroscopic, easily soluble in water, and the aqueous solution is neutral. Soluble in, insoluble in alcohol. Exposure to air will gradually absorb 1 molecule of water. The anhydrous substance with high purity and fine particles is called sodium sulfate. It can form heptahydrate and decahydrate, and heptahydrate (Na2SO4 · 7H2O) is white rhombic crystal. When heated to 24.4 ℃, it becomes anhydrous. When reacting with carbon at high temperature, it is reduced to sodium sulfide.
Use of sodium sulfate
1. As dye filler
Sodium sulfate can be used as a dye filler at ordinary times. When producing dyes and some auxiliaries, adding an appropriate amount of sodium sulfate can make the color of the dye more stable, but its use has strict standards. If it is used improperly, it will also affect the color of the dye.
2. As cotton dyeing promoter
In industrial production, sodium sulfate can also be used as a cotton dyeing promoter, which can make dyes more soluble, increase the dyeing rate of cotton substances, and make the dyed color deeper and purer.
3. Agent
Sodium sulfate also has an obvious effect. Usually, it is used as a liquid after being dissolved. Sometimes, it is used as a color bleach. When used, it is colorless and tasteless, and the bleaching effect is particularly good.
Glauber's salt reserves with rich reserves and high grade are the production base of sodium sulfate. Now it has an annual production capacity of 300000 tons of sodium sulfate. The domestic five effect vacuum nitration process is adopted, with sophisticated equipment and strong technical force.
In addition to producing conventional sodium sulfate according to the national standard GB/T6009-2014, we can produce neutral sodium sulfate (PH: 6-8), low calcium and magnesium (calcium and magnesium ≤ 100ppm), low chlorine (chlorine ≤ 0.04%), high content (superior product) sodium sulfate (Na2SO4 ≥ 99.3%) and other products according to customer requirements; The product has white appearance, fine particles, good quality and high whiteness.
