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Name: Platinum supported on activated carbon
Form: Black or gray powdered solid
Main Use: Catalyst for industrial processes, chemical synthesis, and emissions treatment
Common Appearance: Fine, granular, or slightly dusty
Smell: Odorless
Core Ingredients: Platinum particles deposited across a porous carbon substrate
Main Hazards: Dust inhalation, eye irritation, skin contact risks
Platinum Dangers: Rare skin allergies, respiratory irritation if inhaled
Activated Carbon Dangers: Can act as an asphyxiant in poorly ventilated spaces
Fire and Explosion: Dry carbon may spark or combust if exposed to open flame or high heat; platinum poses minimal flammability risk
Health Effects: Symptoms can include coughing, dry throat, or red eyes for those working directly with loose powder
Primary Component: Activated carbon (85–98 percent by mass)
Active Metal: Metallic platinum (typically 0.5–10 percent by mass depending on grade)
Other Trace Elements: Tin, iron, or other metals may show up based on source of carbon
Purity: Intended to maximize platinum surface area while using as little structural binder as possible
Inhalation: Move affected person to fresh air; seek medical help if breathing becomes difficult
Eye Contact: Rinse eyes gently with clean water for several minutes; remove contact lenses if possible
Skin Contact: Wash exposed skin with mild soap and water; persistent irritation may need medical advice
Ingestion: Rinse mouth with water; medical consultation may be wise if symptoms bother the individual
Suitable Extinguishing Media: Water spray, foam, dry chemical, or carbon dioxide
Special Precautions: Firefighters should wear full protective equipment and breathing apparatus
Combustion Risks: Releases smoke, possible carbon monoxide if burned without enough oxygen
Heat Sensitivity: Carbon dust may promote flash fires in confined spaces
Personal Precautions: Wear respiratory protection, gloves, and safety goggles when cleaning up spills
Environmental Protection: Prevent dust from entering drains or air vents; dilute with water only if local rules allow
Cleanup Methods: Shovel spilled powder into well-sealed, labeled containers; vacuum only with equipment rated for combustible dusts
Safe Handling: Work in areas with strong ventilation; avoid generating dust or letting fine particles scatter
Prohibited Activities: No open flames, smoking, or heat sources close to storage or handling sites
Container Advice: Use tight-fitting lids and non-metallic containers to protect against accidental ignition
Storage Environment: Store away from oxidizers, acids, or active chemicals; keep stock dry and room temperature
Engineering Controls: Use local exhaust ventilation or fume hoods for dusty jobs
Personal Protection: NIOSH-approved respirators, gloves made from nitrile or latex, chemical splash goggles
Uniforms and Aprons: Recommended for bulk transfer operations
Hygiene: Wash hands and face after contact, don’t eat or drink before thoroughly cleaning up
Appearance: Black to charcoal-gray solid, odorless, tasteless
Density: Varies from 0.4 to 0.6 grams per cubic centimeter
Melting Point: Platinum content: over 1500 degrees Celsius; carbon content: oxidizes above 600–700 degrees Celsius in air
Solubility: Not soluble in water or most solvents
Reactivity: Stable under recommended storage but burns rapidly in high heat
Chemical Stability: Stable at room temperature when kept dry; moisture and open flame create risks
Incompatible Materials: Strong oxidizers, acids, halogens
Decomposition Products: Extended heat or burning can release carbon monoxide, carbon dioxide, trace platinum compounds
Reactivity: May catalyze exothermic reactions with oxidizing gases
Acute Effects: Respirable dust can aggravate asthma or cause discomfort in sensitive lungs
Chronic Effects: Rare sensitization to platinum; skin rashes or respiratory allergies show up in a small share of repeat-exposed workers
Carcinogenicity: No evidence for activated carbon or platinum as direct carcinogens in humans
Ingestion: Considered low toxicity, though not safe for regular consumption
Mutagenicity and Teratogenicity: No strong links for platinum or carbon catalysts in standard research
Persistence: Both platinum and carbon stay in the environment for long periods
Mobility: Dust can travel in wind or by water runoff if not contained
Aquatic Effects: High concentrations disrupt aquatic filter feeders, but platinum itself has low water solubility
Soil Effects: Carbon may alter soil chemistry near spills; platinum can persist as a trace metal
Preferred Methods: Recover platinum by sending used material for refining or metal reclamation
Solid Waste: If recycling is impossible, landfill disposal under hazardous waste permits
Environmental Responsibility: Never flush into sewer or natural water; always consult local solid waste rules
Empty Containers: Decontaminate or triple-rinse before recycling or disposal
UN Status: Typically not regulated as hazardous under standard shipment rules
Bulk Handling: Use sealed drums or lined sacks to reduce dust and prevent moisture pickup
In-transit Risks: Avoid load shifting, puncture, or rough handling
Workplace Limits: No strict occupational exposure limit for activated carbon; platinum dust or fume limits sit at 2 mg/m³ according to OSHA
Environmental Rules: Countries may require notification for bulk import and use
Hazard Classifications: Not considered a dangerous good for transit, but fire codes apply in storage areas
Labeling: Clear identification required for bulk or laboratory use to reduce risk of accidental chemical mixing
