Sodium metabisulfite should pay attention to what aspects

1. Sulfur is a Class B dangerous product. There is a possibility of dust explosion. Especially domestic solid sulfur burning units must pay attention to ventilation during the crushing process. Prevent dust from reaching explosive limits. The lower explosion limit is 35mg/m3.

2. SO2 gas is toxic and heavier than air. Once a leak occurs, the personnel in the leaked area should be quickly evacuated to the upper wind, and immediately isolated, strictly restricting access. It is recommended that emergency personnel wear self-contained positive-pressure respirators and anti-virus clothing. Enter the scene from upwind. Cut off the source of the leak as much as possible. Cover the sewers near the leak point with an industrial cover or absorbent/absorbent to prevent gas from entering. Reasonable ventilation and accelerated diffusion. Dilute and dissolve in spray water. Construct a large amount of waste water generated by the construction of dikes or digging pits.

3. The temperature around the incinerator and the pipeline is relatively high, to prevent high temperature burns.

4. Washing water contains corrosive substances such as sulfurous acid and sulfuric acid, which should be prevented from entering eyes and mouth. Prevent skin contact and cause injury.

Fifth, soda ash has strong alkalinity and needs to be prevented from entering the eyes and other parts, causing burns.

Some knowledge about sodium metabisulfite

1. Fire protection measures of sodium metabisulfite

Dangerous characteristics: It has strong reducibility. It can react with strong oxidants such as chromic anhydride, chlorate and potassium permanganate, etc., which can cause a strong reaction, causing combustion or explosion.

Hazardous combustion products: sodium oxide (Na2O) and sulfur dioxide (SO2)

Combustion equation: Na2S2O5+O2—ignite—2SO2+Na2O

Fire extinguishing method: Firefighters must wear full-body fireproof and anti-virus suits and extinguish the fire in the upwind. When extinguishing the fire, move the container from the fire site to an open place as much as possible.

2. Dangerous first aid measures caused by sodium metabisulfite

Skin contact: Remove contaminated clothing immediately and rinse with plenty of running water for at least 15 minutes. See a doctor.

Eye contact: Lift the eyelid immediately and rinse thoroughly with plenty of running water or saline for at least 15 minutes. See a doctor.

Inhalation: leave the scene to fresh air. If breathing is difficult, give oxygen. See a doctor.

Ingestion: Rinse mouth with water, drink milk or egg whites, and seek medical attention.