Details of Yuanming Powder

Sodium sulfate is a salt formed by the combination of sulfate ions and sodium ions, with the chemical formula Na2SO4. Sodium sulfate is soluble in water, and its solution is mostly neutral, soluble in glycerol but insoluble in ethanol. Inorganic compounds, high-purity, fine-grained anhydrous substances are called yuanming powder. Yuanming powder is a white, odorless, bitter crystalline or powder with hygroscopic properties. The appearance is colorless, transparent, large crystals or granular small crystals. Sodium sulfate easily absorbs water when exposed to air, forming sodium sulfate decahydrate, also known as mirabilite, which is slightly alkaline. Mainly used for manufacturing water glass, glass, enamel, pulp, refrigeration mixtures, detergents, desiccants, dye diluents, analytical chemical reagents, pharmaceuticals, feed, etc. At 241 ℃, sodium sulfate will transform into hexagonal crystals. Sodium sulfate is the most commonly used post-treatment desiccant in organic synthesis laboratories. Upstream raw materials include sulfuric acid, caustic soda, etc.
Appearance and characteristics: monoclinic crystal system, short columnar crystals, dense block or shell like aggregates, colorless and transparent, sometimes with a light yellow or green color, easily soluble in water. White, odorless, salty and bitter crystalline or powder with hygroscopicity. The appearance is colorless, transparent, large crystals or granular small crystals. Sodium sulfate is a strong acid and strong base salt of oxygen-containing acids. Structure: monoclinic, rhombic, or hexagonal crystal system. Solution: Sodium sulfate solution is a colorless solution. Melting point: 884 ℃ (heptahydrate turns anhydrous at 24.4 ℃, decahydrate turns 32.38 ℃, loses 10H2O at 100 ℃). Boiling point: 1404 ℃. Density: 2.68g/cm3
Stability: Stable, insoluble in strong acids, aluminum, and magnesium, hygroscopic. Exposed to the air, it easily absorbs moisture and becomes hydrated sodium sulfate. At 241 ℃, it transforms into hexagonal crystals. High purity and fine grained anhydrous substances are called sodium aluminate powder. Extremely soluble in water. It feels cool. The taste is cool and salty. It is prone to hydration in humid air and transforms into a powdery, hydrated sodium sulfate covering the surface. Anhydrous mirabilite is produced in salt lakes containing sodium sulfate brine, coexisting with mirabilite, calcium mirabilite, laxative salt, white sodium magnesite, gypsum, salt magnesium mirabilite, rock salt, and caustic soda; It can also be dehydrated from mirabilite; There is a small amount of production around the volcanic vent.
application area
1. Sodium sulfate is mainly used as a filler for synthetic detergents. A cooking agent used in the papermaking industry to produce sulfate pulp. The glass industry is used to replace soda ash. The chemical industry is used as a raw material for manufacturing sodium sulfide, sodium silicate, and other chemical products. The textile industry is used for blending Vinylon spinning coagulation baths. Used in the pharmaceutical industry as a laxative. It is also used in non-ferrous metallurgy, leather, and other fields.
2. This accelerates the formation of calcium sulfoaluminate, a hydration product, thereby accelerating the hydration and hardening rate of cement. The dosage of sodium sulfate is generally 0.5% to 2% of the cement mass, which can improve the early strength of concrete by 50% to 100%. The 28 day strength sometimes increases and sometimes decreases, with an increase of about 10%, depending on the type of cement, curing conditions, and dosage. It is also used as a filler for synthetic detergents, as well as in the papermaking industry, glass industry, chemical industry, textile industry, and pharmaceutical industry.
3. Used as analytical reagents, such as dehydrating agents, digestion catalysts for nitrogen determination, and interference inhibitors in atomic absorption spectroscopy analysis. Also used in the pharmaceutical industry.
4. It is used in chemical, papermaking, glass, dyes, printing and dyeing, and pharmaceutical industries. It is also used in the manufacturing of synthetic fibers, leather making, non-ferrous metallurgy, enamel, etc. It is also used as an additive in detergents and soap.
5. It can be used as a buffer in sulfate zinc plating to stabilize the pH value of the plating solution.
Storage method 1. It should be stored in a ventilated and dry warehouse. 2. In summer or areas with high temperatures, it is easy to dissolve and form large blocks. During storage and transportation, it should be moisture-proof and rainproof. 3. Be careful not to be punctured by iron nails or sharp pointed or angular hard objects, which may cause product leakage. Storage precautions: Store in a cool and ventilated warehouse. Stay away from sparks and heat sources. It should be stored separately from acids and should not be stored together. The storage area should be equipped with appropriate materials to contain leaked materials.