The chemical formula is NaOH, commonly known as caustic soda, caustic soda, flake alkali, caustic soda, etc. it is a kind of strong alkali with high corrosiveness and is a white opaque solid. There are massive, flaky, granular and rod-shaped. It is soluble in water and gives off a lot of heat when dissolved. Soluble in water, ethanol and glycerol. Harmful toxic smoke may be produced during combustion
Sodium hydroxide is slightly corrosive to glass products. If the glass container is filled with hot sodium hydroxide solution for a long time, the glass container will be damaged.
Sodium hydroxide has strong irritation and corrosiveness. It can irritate the eyes and respiratory tract, corrode the nasal septum, cause burns in direct contact with skin and eyes, and cause digestive tract burns, mucosal erosion, bleeding and shock.
Chemical formula is Koh, commonly known as caustic potassium, white powder or flake solid, with strong alkaline and corrosive. Easy to absorb moisture in the air and deliquescence, absorption of carbon dioxide line into potassium carbonate. When dissolved in water, alcohol or treated with acid, a large amount of heat is generated. It has strong alkalinity and corrosiveness, and its properties are similar to caustic soda. The median lethal dose (rat, oral) was 1230mg / kg.
Due to the decomposition effect of hydroxide on carbohydrates, it is more dangerous than acid corrosion. The skin corroded by potassium hydroxide usually shows deep burns and is difficult to heal. Once eyes or skin contact with potassium hydroxide, the injured part should be washed with water for more than 15 minutes and immediately seek medical advice; If taken orally, it burns the digestive tract and is fatal.
Storage precautions: store in a cool, dry and well ventilated warehouse; Keep away from fire and heat source; It should be stored separately from inflammables and acids.