Ammonium metatungstate hydrate does have certain hazards. The following is a clear point-by-point representation and summary of the hazards, with references to relevant figures and information in the article:
- Health hazards
Acute toxicity
Ammonium metatungstate hydrate has moderate acute toxicity. Both oral and percutaneous acute toxicity are classified as AcuteTox.4, indicating that it may cause harmful health effects.
Skin Irritation
Contact with skin may be detrimental to health (H313) and may cause serious visual impairment (H318).
- Environmental hazards
Aquatic toxicity
Ammonium metatungstate hydrate is harmful to aquatic organisms (H402) and is classified as having acute aquatic toxicity (AquaticAcute1).
- Fire and Explosion Hazards
Oxidizing and reducing properties
Ammonium metatungstate hydrate has strong oxidizing and reducing properties and is capable of causing fires and explosions.
Reaction with organic substances, reducing agents and combustible substances
When encountering these substances, ammonium metatungstate hydrate can cause combustion or explosion.
- Safety measures
Storage
Ammonium metatungstate hydrate should be stored in a dry, well-ventilated place out of direct sunlight. Smoking and open flames should be prohibited in the storage area.
Handling
When operating, protective equipment such as protective gloves, mask and goggles should be worn to avoid direct contact with ammonium metatungstate hydrate.
Waste disposal
Used ammonium metatungstate hydrate should be stored in special containers to avoid contact with other substances. Before waste disposal, it should be classified and labeled, and follow relevant regulations for disposal.
- First aid measures
In case of accidental ingestion or skin contact, appropriate first aid measures should be taken, such as washing the skin and eyes with water, and calling a detoxification center or doctor if swallowed by mistake.
- Precautions
Ammonium metatungstate hydrate is classified as a hazardous chemical and its hazard label usually contains symbols such as “Danger” and “Xn”, as well as the corresponding hazard class code (e.g. R22) and safety instructions (e.g. S26).
In summary, ammonium metatungstate hydrate is characterized by health hazards, environmental hazards and fire and explosion hazards, and therefore requires special care and appropriate safety measures in its use and storage.
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