Caustic soda is generally flaky or granular. It is easy to dissolve in water to form alkaline solution, and it is also easy to deliquesce. It is easy to absorb water vapor and carbon dioxide in the air. Hydrochloric acid can be added for testing. It is used in the production of paper, soap, dyes, rayon, metal smelting, oil refining, cotton finishing, coal tar product purification, food processing, wood processing and machinery industry.
Add water to dilute or dissolve Caustic Soda, prepare 1~2 Caustic Soda solution for spray disinfection, which is mainly used for the disinfection of livestock houses and vehicles, and 50 solution is used for the corrosion of newborn horns of cattle and sheep.
Note: the bactericidal power of Caustic Soda solution tends to increase with the increase of concentration and temperature, so the disinfection effect of hot solution is good; Adding a small amount of sodium chloride to the Caustic Soda solution can improve the sterilization effect;
As the Caustic Soda solution is a strong alkali, attention should be paid to the protection of disinfection personnel during disinfection to avoid burning people and animals, which is corrosive to textiles and metalware, and is not suitable for disinfection of these items. Livestock and poultry houses and utensils shall be disinfected with Caustic Soda solution for half a day, and then washed with clean water to avoid burning livestock and poultry hoofs or skins.
Caustic soda has strong hygroscopicity. If it is used for high-temperature calcination, it should be mixed evenly as far as possible, calcined in a short time, and should not be placed for a long time. When preparing the solution, it must be fully stirred. On the one hand, Caustic Soda releases a lot of heat in the dissolution process, melting and hardening at the bottom of the container. In addition, Caustic Soda is highly corrosive and has a strong pungent smell when dissolved in water. When used in large quantities, ventilate and wear gas masks.