Specifications

Basic information

Liquid alkali that is liquid sodium hydroxide, also known as caustic soda, caustic soda. Due to different production processes in existing chlor-alkali plants, the concentration of liquid alkali is usually 30-32% or 40-42%. Pure product is colorless transparent liquid. Relative density 1.328-349, melting point 318.4 ℃, boiling point 1390 ℃. Pure liquid caustic soda is called liquid caustic soda, which is colorless and transparent liquid. Industrial products contain more impurities, mainly sodium chloride and sodium carbonate, and sometimes a small amount of iron oxide. When dissolved into concentrated liquid alkali, most of the impurities will float on the liquid surface and can be separated and removed.

Application areas

It is an important basic chemical raw material and has a wide range of uses. Chemical industry for the manufacture of formic acid, oxalic acid, borax, phenol, sodium cyanide and soap, synthetic fatty acids, synthetic detergents. The textile printing and dyeing industry is used as a solvent for cotton desizing agent, scouring agent, mercerizing agent, vat dye and Haichang blue dye. Manufacture of aluminum hydroxide, aluminum oxide and metal surface treatment agent for smelting industry. Instrument industry used as acid neutralizer, decolorant, deodorant. Adhesive industry used as starch paste agent, neutralizer. In addition, it is widely used in enamel, medicine, cosmetics, leather, paint, pesticide, glass and other industries.

1. refined petroleum

After the petroleum products are washed by sulfuric acid, they also contain some acidic substances that must be washed with sodium hydroxide solution and then washed with water to obtain refined products.

2. printing and dyeing

3. textile fiber

4. Papermaking

5. liming the soil with lime.

6. chemicals and chemical reagents.

1. Pharmaceuticals

Stomach medicine: ingredients are aluminum hydroxide, magnesium hydroxide, sodium bicarbonate and a small amount of sodium hydroxide, the main role is to neutralize gastric acid. Carboxymethyl cellulose sodium (CMC): food, drug emulsification, bonding, film formation. As an anti-soil redeposition agent in detergents. Alkali cellulose is made by the reaction of refined cotton with NaOH, and then one-step etherification reaction with chloroacetic acid.

2. Green water purification treatment agent

Preparation of sodium ferrate (Na2FeO4); 3NaClO (sodium hypochlorite) 2Fe(OH)3 (ferric hydroxide) 4NaOH = = 2Na2FeO4 3NaCl 5H2O; Basic aluminum chloride (PAC/BAC) denatures the protein of the virus. And water purification, wastewater treatment, strong sodium oxide to adjust the ph value.

3. Ion exchange resin

After the failure of anion exchange resin, it is generally regenerated with 5%-8% NaOH solution.

4. Alkaline cleaning agent

NaOH solution can be used for a variety of cleaning agents, such as car wash, bottle wash, detergent, rust remover, disinfectant configuration, mainly used for wine industry bottle cleaning, ceramic metal industry surface treatment and so on

5. Sodium hypochlorite bleach

7. rubber, leather

1. Precipitated white carbon black

2. Recycling of old rubber

Used rubber recovery with sodium hydroxide solution for pretreatment of rubber powder, and then for subsequent processing.

3. Leather

8. metallurgy, electroplating

9. other roles

1. The role of ceramic caustic soda in ceramic manufacturing has two points. First, in the firing process of ceramics, caustic soda is used as diluent. Second, the fired ceramic surface will be scratched or very rough, with caustic soda solution after cleaning, so that the ceramic surface more smooth.

2. Instrument industry used as acid neutralizer, decolorant, deodorant.

Packaging, transportation and safety

Liquid caustic soda is shipped by tanker or storage tank

Caustic soda is extremely corrosive. When the skin is touched, it should be washed with water immediately. When splashed into the eyes, it should be washed with water or normal saline for 15 minutes. In severe cases, it should be sent to the hospital for treatment.