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WO3 MSDS Quick Reference: Tungsten Trioxide Safety


wo3 msds

(wo3 msds)

IDENTIFICATION: Chemical Name: Tungsten Trioxide. Formula: WO3. Common Synonyms: Tungstic oxide, Tungsten(VI) oxide. CAS Number: 1314-35-8. Physical Form: Yellow crystalline powder.

HAZARDS IDENTIFICATION: Low acute toxicity via ingestion, skin contact, or inhalation. Primary physical hazards: Fine dust can cause mechanical irritation to eyes, skin, and respiratory tract. Avoid creating airborne dust. Not classified as flammable or explosive under normal conditions. No significant environmental hazards reported. Treat as a general industrial chemical with caution.

FIRST AID MEASURES: Eyes: Immediately flush with plenty of water for at least 15 minutes. Hold eyelids open. Seek medical attention if irritation persists. Skin: Wash affected area thoroughly with soap and water. Remove contaminated clothing. Launder before reuse. Ingestion: Rinse mouth with water. Do NOT induce vomiting unless directed by medical personnel. Give water to drink if conscious. Get medical advice. Inhalation: Move to fresh air. If breathing is difficult, give oxygen. Seek medical attention if respiratory irritation occurs.

FIRE-FIGHTING MEASURES: Non-flammable solid. Does not burn. Firefighters should use standard protective equipment and self-contained breathing apparatus (SCBA) in enclosed areas. Use water spray, fog, or standard extinguishing agents suitable for surrounding materials. Cool containers exposed to fire with water.

ACCIDENTAL RELEASE MEASURES: Wear appropriate protective equipment (gloves, safety glasses, dust mask). Avoid generating dust. Sweep or vacuum spilled material using equipment with HEPA filtration. Place in suitable closed container for disposal. Prevent material from entering drains or waterways.

HANDLING AND STORAGE: Handle in well-ventilated areas. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Wash hands thoroughly after handling. Store in a cool, dry, well-ventilated place in tightly closed containers. Keep away from strong acids or reducing agents.

EXPOSURE CONTROLS/PERSONAL PROTECTION: Engineering Controls: Use local exhaust ventilation where dust is generated. Personal Protective Equipment (PPE): Safety glasses with side shields or chemical goggles. Gloves (nitrile or neoprene recommended). Dust mask or respirator (NIOSH N95 or equivalent) if ventilation is inadequate. Lab coat or work clothing.

STABILITY AND REACTIVITY: Stable under normal temperatures and pressures. Conditions to Avoid: Strong reducing agents, strong acids. Hazardous Decomposition Products: None known under normal use. Not combustible.

TOXICOLOGICAL INFORMATION: Low oral, dermal, and inhalation toxicity. Primary concern is mechanical irritation from dust particles. Not expected to be a skin sensitizer. No significant systemic toxicity reported from typical occupational exposure. Chronic effects not well documented; minimize exposure.

DISPOSAL CONSIDERATIONS: Dispose of in accordance with local, state, and federal regulations. Consult waste management authorities. Not classified as hazardous waste in many jurisdictions, but confirm locally.


wo3 msds

(wo3 msds)

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