Caustic soda can remove oil stains, but be careful, it is corrosive, it should be prepared into a solution, and gloves should be used when using it.
1. Caustic soda is sodium hydroxide. The oil stains that we encounter in our lives are higher fatty acids. The two will react to generate higher fatty acid sodium. The higher fatty acid sodium dissolves in water and can be washed away with water. Oil can undergo hydrolysis reaction in alkaline environment, and it is more thorough than acidic conditions, but caustic soda is more corrosive.
2. Sodium hydroxide can be used as an alkaline cleaning agent in water treatment, soluble in ethanol and glycerol; insoluble in propanol and ether. It disproportionates with halogens such as chlorine, bromine and iodine. Neutralizes with acids to generate salt and water.
caustic soda can remove oil
Sodium hydroxide is a strong corrosive alkali, generally in the form of flakes or blocks, easily soluble in water, and can be used as an alkaline cleaning agent in water treatment.
The oil chemical composition is oleic acid with a carboxyl COOH tail. Caustic soda and soda ash can make oil undergo saponification reaction to generate fatty acid sodium and glycerin, which can be dissolved in water for the purpose of removing oil, thus achieving the effect of decontamination.
Saponification generally refers to the reaction of a base (usually a strong base) with an ester to produce an alcohol and a carboxylate, especially a grease and a base.
Sodium hydroxide is widely used in the production of paper, soap, dyes, rayon, metal smelting, petroleum refining, cotton fabric finishing, purification of coal tar products, as well as food processing, wood processing and machinery industry.
It is a strong alkaline substance, is highly corrosive, and has the "Corrosive Substance" mark.
Protective measures
1. Respiratory protection: Wear a gas mask if necessary.
2. Eye protection: Wear chemical safety goggles. Protective clothing: Wear work clothes (made of anti-corrosion materials). Use with care, be careful not to splash into clothing, mouth and nose.
3. Hand protection: Wear rubber gloves.
4. Others: After work, shower and change. Pay attention to personal hygiene.
