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Chemical Name: Ammonium Polyvanadate
Formula: (NH4)2(VO3)n
Physical Appearance: Pale yellow to orange crystalline powder
Odor: Faint ammonia-like
Common Uses: Found in chemical synthesis, catalyst manufacturing, and ceramics processing
Main Risks: Irritates eyes, skin, and respiratory tract on contact; can cause coughing or shortness of breath if inhaled
Classification: Considered harmful if swallowed, toxic to aquatic life
Precautionary Symbols: Corrosive, health hazard, environmental toxicity
Chronic Effects: Prolonged exposure carries potential for vanadium poisoning, which may show up as nerve problems, digestive upset, or changes in blood chemistry
Component: Ammonium Polyvanadate
CAS Number: 7803-55-6
Concentration: Solid; typical grades contain vanadium as the primary active component along with trace impurities depending on synthesis route
Main Impurities: Often minimal, but occasionally traces of other vanadium oxides or ammonium salts depending on production controls
Eye Contact: Flush immediately with running water for 15 minutes; seek medical help
Skin Contact: Remove any contaminated clothing, wash exposed area thoroughly with soap and water
Inhalation: Move to fresh air, keep at rest, and seek attention if symptoms persist
Ingestion: Rinse mouth with water, avoid inducing vomiting, and get medical attention quickly
Note for Responders: Those giving first aid should wear gloves and goggles to avoid secondary contamination; medical follow-up for prolonged contact is crucial because vanadium compounds can be tricky in the human body
Suitable Extinguishing Media: Dry chemical powder, foam, or CO2 preferred; water spray might carry dust into the air
Special Hazards: Heating can create toxic fumes like vanadium oxides and ammonia, which carry health risks
Advice for Firefighters: Full protective gear including a self-contained breathing apparatus is necessary
Additional Considerations: Contaminated runoff must be collected to keep surrounding soil and waterways clear of toxic residues
Personal Precautions: Wear masks with particulate filters, chemical-resistant gloves, and goggles
Spill Response: Sweep up gently to avoid raising dust, transfer into labelled containers for safe disposal
Environmental Protection: Prevent entry into sewage, drains, or waterways because even small quantities threaten aquatic organisms
Cleanup: Wash area with copious water after physical removal, ventilate space, and avoid use of dry sweeping if dust clouds form
Safe Handling Practices: Work in well-ventilated spaces, minimize dust creation, avoid eating or drinking during handling, always wash hands after activities
Storage Conditions: Keep in tightly closed containers, store away from heat and strong acids, avoid damp areas to limit hydrolysis and clumping
Segregation: Store separately from oxidizers and reducing agents because chemical reactions can happen unexpectedly
Advice for Workers: Implement procedures for rotating stock regularly and inspecting containers for signs of leaks or corrosion caused by moisture
Engineering Controls: Use local exhaust ventilation to capture airborne dust near handling points
Respiratory Protection: Use NIOSH-approved particulate respirators if airborne levels approach exposure limits
Eye/Face Protection: Splash-proof safety goggles are required in all handling areas
Skin Protection: Chemical-resistant gloves like nitrile or neoprene, and long-sleeved lab coats
Work Hygiene: Regular handwashing, immediate laundering of lab coats after spills, and access to eye wash stations in the same room as chemical storage
Appearance: Yellow to orange powder with a crystalline structure
Solubility in Water: Slightly soluble at room temperature, more soluble in hot water
Melting Point: Decomposes before melting at high temperatures, releasing toxic fumes
Boiling Point: Not applicable; compound breaks down before boiling
Odor: Reminds one faintly of ammonia
pH Characteristics: Aqueous solutions often register slightly acidic to neutral depending on precise composition
Vapor Pressure: Essentially zero at ambient temperatures due to non-volatile nature
Chemical Stability: Stable under standard room conditions; moisture and high temperatures start decomposition
Reactivity: Reacts with strong acids to release toxic vanadium oxides and ammonia gas
Incompatible Materials: Strong reducing agents, organic combustibles, and acids all present risk of hazardous reaction
Hazardous Byproducts: Thermal decomposition may release nitrogen oxides, ammonia, and vanadium pentoxide
Acute Toxicity: Harmful if swallowed or inhaled; vanadium compounds can produce gastrointestinal distress, headache, and dizziness
Chronic Exposure: Repeated contact builds up vanadium in the body, sometimes leading to persistent nosebleeds, greenish tongue, or nerve changes
Sensitization: Some people develop dermatitis after repeated skin contact
Carcinogenicity: No direct evidence ties this compound to cancer in humans, but similar vanadium salts link to tumors in certain animal studies
Medical Monitoring: Periodic health checks for workers in contact with vanadium, including blood count and respiratory assessments, catch early warning signs
Aquatic Toxicity: Ammonium polyvanadate makes even low concentrations in water toxic to fish, aquatic invertebrates, and plants
Persistence and Degradability: Vanadium ions linger in sediments and don’t break down quickly; soil bacteria take time to process them
Bioaccumulation: Organisms like shellfish and aquatic plants pick up vanadium over time, which impacts food chains
Spillage Impact: Even minor leaks require careful cleanup because runoff spreads fast through storm drains to rivers or streams
Waste Treatment: Collect all residues and contaminated materials for specialized chemical disposal, never pour into drains or landfill
Incineration: Only allowed if equipped with high-temperature scrubbers for toxic vanadium oxides
Container Handling: Rinse empty packaging, treat wash water as hazardous, and dispose via approved chemical waste processors correct for vanadium compounds
Classification: Transported as an environmentally hazardous substance; subject to controls based on vanadium content
Packing Considerations: Use sealed, clearly labeled drums or bottles, handle with care to avoid on-the-road spills
Transport Hazards: Dust escape poses breathing problems for handlers, so secondary containment methods are recommended
International Regulations: Many countries require declaration of vanadium content due to aquatic toxicity risks on import/export
Workplace Limits: Occupational guidelines limit airborne vanadium at levels set by agencies like OSHA and ACGIH, reflecting health risks after long-term exposure
Chemical Listings: Included in several hazardous substance inventories due to environmental and human health risks
Reporting Requirements: Facilities using significant quantities must keep records and report accidental releases quickly
Legal Obligations: Employers follow specific labeling, training, and storage regulations meant to protect both workers and communities downstream
