Kerosene is actually sodium hydroxide, its chemical formula is NaOH, is a strong corrosive alkali, kerosene is one of the necessary chemicals in the chemical laboratory, but also one of the common chemicals. Below I give you an introduction to the use of kerosene.

How to Use Kerosene

Kerosene has strong moisture absorption. If it is used for high temperature calcination, it should be mixed well and calcined in as short a time as possible, and should not be left for a long time. Preparation of the solution must be fully stirred, one side of the caustic soda in the dissolution process because of the release of a large amount of heat and melting at the bottom of the container, in addition, caustic soda has a strong corrosive, dissolved in water has a strong irritating odor, a large number of use must be ventilated or wear a gas mask.

The use of caustic soda

1, ordinary soap is the sodium salt of fatty acids, generally saponified with oils and fats in the slightly excessive caustic soda effect and produced.

2, printing and dyeing, textile industry, to use a large amount of lye to remove the oil and grease on cotton yarn, wool and so on. Caustic soda is also needed for the production of synthetic fibers.

3, refined petroleum also use caustic soda. In order to remove the gum in the petroleum fraction, generally in the petroleum fraction with concentrated sulfuric acid in order to make the gum become acid residue and precipitation. After acid washing, the oil also contains phenol, naphthenic acid and other acidic impurities as well as excess sulfuric acid, which must be washed with caustic soda solution, and then washed with water in order to obtain refined petroleum products.

4, the paper industry, the first chemical treatment, the raw materials containing cellulose and chemicals steamed into pulp. The so-called alkaline pulp is to use caustic soda solution as a cooking solution to remove lignin, carbohydrates and resins in the raw material, and neutralize the organic acids in it, so that the cellulose is separated.

5, the metallurgical industry, often the active ingredients in the ore into a soluble sodium salt, in order to remove the insoluble impurities, therefore, often need to add caustic soda.

6, the chemical industry, the system of sodium metal, electrolysis of water with caustic soda. The production of many inorganic salts, especially the preparation of some sodium salts, have to use caustic soda. Synthetic dyes, drugs and organic intermediates, etc. also need to use caustic soda.

7, unclogging sewers, cleaning hoods. Caustic soda is a strong alkali, there is a decomposition of protein. Pipeline blockage in the caustic soda under the action of blocked hair and other decomposition is corroded, the pipeline will be smooth.

What are the hazards of caustic soda

Industrial caustic soda is very harmful to the human body, belonging to the highly toxic chemicals, has a strong corrosive properties, only need to consume 1. 95 grams can cause death. If you consume food containing industrial hydrogen peroxide, not only will it strongly stimulate the human gastrointestinal tract, there are also potential hazards of carcinogenicity, teratogenicity and genetic mutation.

Precautions for the use of caustic soda

In the use of caustic soda solution disinfection, should pay attention to the following points:

(1) Caustic soda solution bactericidal power is often strengthened with the increase in concentration and temperature, so the effect of disinfection with hot solution is good.

(2) Adding a small amount of sodium chloride (table salt) to the caustic soda solution can improve the sterilization effect.