Product Name

Caustic Soda Flakes, solid alkali, sodium hydroxide

Material Properties

Chemical name: Caustic Soda

Molecular formula: NaOH Molecular weight: 40

Melting point: 318.4℃ Boiling point: 1390℃

CSA number: 130-73-2

Chemical Properties:

Solid caustic soda is soluble in ethanol and glycerin; insoluble in acetone and ether. It is extremely corrosive and corrosive to fibers, skin, glass, ceramics, etc. It reacts with metallic aluminum and zinc, non-metallic boron and silicon to release hydrogen; it reacts with chlorine, bromine, iodine and other halogens to produce disproportionation reaction; it neutralizes with acids to generate salt and water. Pure anhydrous sodium hydroxide is a white translucent, crystalline solid. Sodium hydroxide is very soluble in water, and its solubility increases with the increase of temperature. It can release a lot of heat when dissolving. Its saturated solution concentration can reach 26.4mol/L (1:1) at 288K. Its solution has an astringent taste and a smooth feeling, and the solution is strongly alkaline and has all the properties of an alkali.

Product Usage:

Sodium hydroxide is mainly used in papermaking, cellulose pulp production, production of soap, synthetic detergents, synthetic fatty acids, and refining of animal and vegetable oils and fats. In the textile printing and dyeing industry, it is used as cotton desizing agent, scouring agent and mercerizing agent. In the chemical industry, it is used to produce ketone sand, sodium cyanide, formic acid, oxalic acid, phenol, etc. It is used in the petroleum industry to refine petroleum products and in oil field drilling mud. It is also used in the production of surface treatments for alumina, zinc metal and copper metal, as well as in glass, porcelain, tanning, medicine, dyes, and pesticides. Food-grade products are used as acid neutralizers in the food industry, as peeling agents for citrus and peaches, and as detergents for empty bottles and cans, as well as decolorizing and deodorizing agents. It is widely used in chemical industry, paper making, printing and dyeing, electric power and other industries. It is also used as an additive in the coal bonding process in fertilizer plants.

Storage:

When storing solid sodium hydroxide, pay attention to sealing it tightly to prevent it from being exposed to the air, absorbing moisture, deliquescing or mixing with carbon dioxide. When using a glass bottle to hold caustic soda or other forms of sodium hydroxide, do not use a glass bottle stopper. Instead, use a rubber stopper. This is because sodium hydroxide will react with the silica in the glass to form sodium silicate, causing the bottle stopper to become damaged. The bottle body is bonded and difficult to open.