Sodium hydroxide

[Application Field]

1. Used for the production of papermaking and cellulose pulp; Used for the production of soap, synthetic detergents, synthetic fatty acids, and the refining of animal and plant fats.

2. Used in the textile printing and dyeing industry as a cotton fabric desizing agent, cooking agent, and mercerizing agent.

3. The chemical industry is used to produce borax, sodium cyanide, formic acid, oxalic acid, phenol, etc. The petroleum industry is used for refining petroleum products and in oilfield drilling mud.

4. It is also used for surface treatment in the production of alumina, metallic zinc, and metallic copper, as well as in glass, enamel, leather making, pharmaceuticals, dyes, and pesticides.

5. Food grade products are used in the food industry as acid neutralizing agents, can be used as peelers for citrus, peach, etc., can also be used as detergents for empty bottles, cans, and other containers, as well as decolorizers and deodorizers.

6. Widely used basic analytical reagents. Prepare standard alkaline solution for analysis. Absorbent for small amounts of carbon dioxide and water. Neutralization of acids. Sodium salt manufacturing. Widely used in papermaking, chemical industry, printing and dyeing, medicine, metallurgy (aluminum smelting), chemical fiber, electroplating, water treatment, tail gas treatment, etc.

7. Used as a neutralizing agent, coordination masking agent, precipitant, precipitation masking agent, and as a colorimetric agent for the determination of ketosterols by thin-layer analysis. Used for sodium salt preparation and saponification agents. Used for manufacturing various sodium salts, soap, pulp, sorting cotton fabrics, silk, viscose fibers, rubber product recycling, metal cleaning, electroplating, bleaching, etc.

8. In cosmetics and creams, this product acts as an emulsifier with saponification agents such as stearic acid, used in the production of snow cream, shampoo, etc.

[Storage Method]

1. Sodium hydroxide has a slight corrosive effect on glass products, and the two will generate sodium silicate, causing the piston in the glass instrument to adhere to the instrument. Therefore, glass bottle stoppers should not be used when storing sodium hydroxide solution, otherwise it may cause the bottle cap to fail to open.

2. If hot sodium hydroxide solution is stored in a glass container for a long time, it can also cause damage to the glass container.

3. Sodium hydroxide should be stored in a cool, dry, and well ventilated warehouse. Keep away from sparks and heat sources. The storage temperature shall not exceed 35 ℃ and the relative humidity shall not exceed 80%. The packaging must be sealed and not damp. It should be stored separately from flammable materials, acids, etc., and should not be stored together. The storage area should be equipped with appropriate materials to contain leaked materials. Solid sodium hydroxide is tightly sealed in 0.5mm thick steel drums, with a net weight of no more than 100 kilograms per drum; Plastic bags or two-layer kraft paper bags with full or medium opening steel drums on the outside; Screw mouth glass bottles, iron cap pressure mouth glass bottles, plastic bottles or ordinary wooden boxes outside metal barrels (cans); Screw mouth glass bottles, plastic bottles, or tin plated thin steel drums (cans) filled with bottom plate lattice boxes, fiberboard boxes, or plywood boxes; Tin plated thin steel drums (cans), metal drums (cans), plastic bottles or corrugated cardboard boxes with metal hoses. The packaging container should be complete, sealed, and clearly marked with "corrosive substances".

[Safety measures]

First aid measures

This product has strong irritation and corrosiveness. Dust or smoke can irritate the eyes and respiratory tract, corrode the nasal septum, and direct contact with the skin and eyes can cause burns; Misadministration can cause gastrointestinal burns, mucosal erosion, bleeding, and shock. Health hazards (blue):

1. Ingestion causes serious and permanent damage to the digestive system, including mucosal erosion, bleeding, and shock.

Treatment: When the patient is awake, rinse their mouth immediately, take diluted vinegar or lemon juice orally, and seek medical attention.

2. Inhalation stimulates the respiratory tract and corrodes the nasal septum.

Handling method: Leave the scene and go to a place with fresh air. If necessary, perform artificial respiration and seek medical attention. If breathing is difficult, administer oxygen therapy. If the patient inhales or ingests the substance, do not use mouth to mouth breathing for artificial respiration. Use a one-way valve respirator or other appropriate medical respirator.

3. Skin danger, can cause symptoms of burns and even severe ulcers.

Solution: Immediately rinse with water for at least 15 minutes. If there is a burn, seek medical treatment. Remove and isolate contaminated clothing and shoes. For small amounts of skin contact, avoid expanding the area of substance dissemination. Pay attention to keeping the patient warm and quiet. Inhalation, ingestion, or skin contact with this substance can cause delayed reactions. Ensure that medical personnel are aware of personal protective knowledge related to the substance and pay attention to their own protection.

4. Eye danger, can cause burns and even damage the cornea or conjunctiva.

Treatment: Immediately lift your eyes and wash with running water or physiological saline for at least 15 minutes, or rinse with 3% boric acid solution and seek medical attention.

engineering control 

Closed operation, pay attention to ventilation.

Protective measures

Respiratory protection: Wear a gas mask if necessary.

Eye protection: Wear chemical safety goggles.

Body protection: Wear work clothes (made of anti-corrosion materials).

Hand protection: Wear rubber gloves.

Other: After work, take a shower and change clothes. Pay attention to personal hygiene and hygiene.

Leakage emergency response

Isolate the contaminated area from leaks and set up warning signs around it. It is recommended that emergency personnel wear gas masks and chemical protective clothing. Do not contact the leakage directly, collect it in a dry, clean and covered container with a clean shovel, add a small amount of water into a large amount, adjust it to neutral, and then put it into the wastewater system. It can also be rinsed with a large amount of water, and the diluted washing water can be put into the wastewater system. If there is a large amount of leakage, it should be collected and recycled or disposed of harmless before disposal.

Firefighting measures

Fire extinguishing method: Misty water, sandy soil

Firefighting measures: The earliest discoverer should immediately report to the production department and organize workshop personnel to extinguish the fire. Upon receiving the alarm, the production department should immediately notify members of the command center and various rescue teams to quickly arrive at the scene, and send the fire extinguishing equipment for this position to the train room; After arriving at the scene, the medical rescue team will transfer the seriously injured personnel to the hospital or the scene for emergency rescue. It is necessary to quickly control the on-site security, disperse the flow of people, and protect important materials.

Fire extinguishing precautions: Avoid water flow impacting objects to prevent splashing and burns caused by the release of a large amount of heat when in contact with water.