Sodium bisulfite

Sodium hydrogen sulfite, white crystalline powder.Smells of sulfur dioxide.Unpleasant taste.Part of sulfur dioxide is lost in exposure to air and oxidized to sulfate at the same time.Dissolved in 3.5 parts of cold water, 2 parts of boiling water and about 70 parts of ethanol, its aqueous solution is acidic.Melting point decomposition.

Basic information

Use

1. For bleaching of cotton fabrics and organic matter;

2. Used as reducing agent in dyestuff, papermaking, leather making, chemical synthesis and other industries;

3. Intermediates used in the production of analgin and aminopyrine in the pharmaceutical industry;

4. Food grade products are used as bleaching agents, preservatives, antioxidants;

5. For the treatment of chromium-containing wastewater, and as an electroplating additive.

Dangerous

Hazard category: low toxicity, median lethal dose (rat, oral) 2000mg/kg.

Health hazards: irritating to eyes, respiratory tract, can cause allergic reactions.Can cause corneal damage, leading to blindness.Can cause ~; a large amount of oral intake can cause nausea, diarrhea, circulatory failure, intermediary nerve depression.

Environmental Hazards: Harmful to the environment and can cause pollution to water bodies.

Explosion Hazard: This product is non-flammable, corrosive, and can cause burns to the human body.

First-aid

Skin touch: Immediately remove contaminated clothing and rinse with plenty of running water.seek medical attention.

Eye touch: Immediately lift eyelids and rinse thoroughly with plenty of running water or saline for at least 15 minutes.seek medical attention.

Inhalation: Quickly leave the scene to fresh air.Keep the airway open.If breathing is difficult, give oxygen.If breathing stops, give artificial respiration immediately.seek medical attention.

Ingestion: Drink enough warm water to induce vomiting.seek medical attention.

Fire-fighting measures

Hazardous properties: It has strong reducibility.Contact with acid or acid gas can produce toxic gases.Decomposed by high heat to release toxic gases.Corrosive.

Hazardous combustion products: sulfur oxides, sodium oxides.

Fire fighting methods: Firefighters must wear full-body acid-alkali-resistant fire-fighting clothing.Move containers from the fire to an open area as far as possible when putting out a fire.Then choose the appropriate fire extinguishing agent according to the cause of the fire.

Emergency treatment

Emergency treatment: isolate the leaked contaminated area and restrict access.It is recommended that emergency personnel wear dust masks and acid-proof clothing.Do not come into direct contact with spillage.Small spills: Avoid dusting, sweep up carefully, and collect in a dry, clean, covered container.Large spill: Collect for recycling or transport to waste disposal site for disposal.

Operation Disposal

Operation precautions: closed operation, local exhaust.Prevent dust from being released into the workshop air.Operators must undergo special training and strictly abide by operating procedures.It is recommended that operators wear self-priming filter dust masks, chemical protective glasses, rubber acid and alkali resistant clothing, and rubber acid and alkali resistant gloves.Avoid generating dust.Avoid contact with oxidants, acids and bases.Equipped with leakage emergency treatment equipment.Empty containers may be harmful residues.

Storage Precautions: Store in a cool, ventilated warehouse.Keep away from fire and heat sources.Protect from direct sunlight.Package is sealed.It should be stored separately from oxidants, acids and alkalis, and should not be mixed.It should not be stored for a long time to avoid deterioration.Storage areas should be provided with suitable materials to contain spills.