Granular soda (caustic soda in pearl) is granular caustic soda, also known as pearl soda, a solid caustic soda (sodium hydroxide) products, chemical formula:

NaOH. according to the size of the grain can be divided into coarse grain soda, granulated soda , which particle soda particle size of about 0.7mm, the shape is very similar to laundry detergent.

1.Granular soda use

In granulated soda alkali, flake alkali and granular alkali are the most common and used solid alkali, and granular alkali is better than flake alkali,

but relatively granular alkali than flake alkali production process is more difficult, more complex, therefore, the price of granular alkali is naturally higher than flake alkali.

Granular soda is mainly used as a chemical raw material, which is an important chemical basic material and has a wide range of uses.

It is used in chemical industry to make formic acid, oxalic acid, borax, phenol, sodium cyanide, soap, synthetic fatty acid, synthetic detergent and so on.

Textile printing and dyeing industry used as cotton desizing agent, cooking agent, mercerizing agent and solvent for reducing dyestuff and Haichang blue dyestuff.

It is used in the smelting industry to manufacture aluminum hydroxide, aluminum oxide and metal surface treatment agent.

Instrument industry as acid neutralizer, decolorizer, deodorizer. Adhesive industry as starch pasting agent, neutralizing agent.

In addition, it is widely used in enamel, medicine, cosmetics, tanning, paint, pesticide, glass and other industries.

In most industries, granular soda is better than other solid bases such as caustic soda, so it is popular in industrial manufacturing industry,

but at the same time, the production process of granular soda is also more difficult than that of other solid bases such as caustic soda.

2. Granular soda characteristics

Solid soda is very easy to damp and react with carbon dioxide, so the preservation of granulated soda soda needs to be absolutely dry and sealed.

Granular soda is solid sodium hydroxide, with all the chemical properties of sodium hydroxide, placed in the air will absorb the moisture in the air to dampness,

and react with carbon dioxide to deteriorate, in the packaging also requires dry, sealed packaging, domestic generally use 25KG three-layer plastic woven bag packaging granular soda.

3. Granular soda uses and protection

Product use
1. for the production of paper and cellulose pulp.

2. Used in the production of soap, synthetic detergent, synthetic fatty acid and the refining of animal and vegetable fats and oils.

3. Used in textile printing and dyeing industry as cotton desizing agent, cooking agent and mercerizing agent.

4. The chemical industry is used to produce borax, sodium cyanide, formic acid, oxalic acid, phenol, etc.

5. Petroleum industry is used to refine petroleum products and used in oil field drilling mud.

It is also used in the production of alumina, zinc metal and copper metal surface treatment, as well as glass, enamel, tanning, medicine, dyes and pesticides.

6. Food grade products are used in the food industry as acid neutralizer, peeling agent for citrus, peaches, etc. It can also be used as detergent for empty bottles,

empty cans and other containers, as well as decolorizer and deodorizer.

7. It can also be used as alkaline desiccant. Caustic soda is widely used in national economy, and many industrial sectors need caustic soda.

The sector that uses most caustic soda is the manufacture of chemicals, followed by paper making, aluminum, tungsten, rayon, rayon and soap manufacturing.

In addition, in the production of dyes, plastics, pharmaceuticals and organic intermediates, the regeneration of old rubber, the production of sodium metal,

the electrolysis of water and the production of inorganic salts, the production of borax, chromium salt, manganate, phosphate, etc., also use a large amount of caustic soda.

Toxicity protection

Extremely corrosive, its solution or dust splashed on the skin, especially splashed on the mucous membrane, can produce soft scabs and can penetrate into the deep tissue.

It leaves scarring after burns. Splashed into the eye, not only damage to the cornea, but also can make the eye deep tissue damage. If splashed on the skin,

rinse with water for 10 minutes immediately; if splashed in the eye, rinse with water or saline for 15 minutes immediately, and then pour 2% nufcaine into the eye.

In serious cases, send to hospital for treatment. The maximum allowable concentration of caustic soda dust in the air is 0.5mg/m3. Operators must wear overalls,

masks, protective glasses, rubber gloves, rubber aprons, long rubber boots and other labor protection products when working.

Neutral and hydrophobic ointment should be applied to the skin. The production workshop should be well ventilated.

4. Granular soda packaging storage and transportation

Caustic soda is generally packed in 25kg three-layer plastic woven bags, the inner and outer layers are plastic woven bags, and the middle layer is plastic inner film bag.

Caustic soda is classified as Class 8.2 alkaline corrosive by Classification and Marking of Commonly Used Hazardous Chemicals (GB 13690-92),

which is a Class 8 hazardous material, Hazardous Code: 1823, and should be stored in a ventilated and dry warehouse or shed.

The packaging container should be complete and sealed. It should not be stored and transported together with flammable materials and acids.

Pay attention to moisture and rain during transportation. In case of fire, it can be put out with water, sand and various fire extinguishers,

but firefighters should pay attention to the corrosiveness of caustic soda dissolved in water.