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Product Name: Tantalum Pentachloride
Chemical Formula: TaCl₅
Synonyms: Tantalum(V) Chloride
Recommended Use: Laboratory reagent, catalyst, inorganic synthesis
Manufacturer Details: Refer to supplier documentation for address and emergency contact
CAS Number: 7721-01-9
Emergency Telephone: National poison control center or local emergency number
Classification: Corrosive to metals, Causes severe skin burns and eye damage, Harmful if inhaled or swallowed
Hazard Statements: Contact with water releases hydrochloric acid, Vapors or dust can burn the respiratory tract, Strong oxidizer
Signal Word: Danger
Pictograms: Corrosion, Exclamation Mark
Precautionary Statements: Avoid all contact with water or moisture, Wear full protective gear, Only handle with proper fume extraction
Notable Symptoms: Burning sensation, coughing, breathing difficulty, eye redness, skin blisters
Medical Conditions Aggravated: Chronic pulmonary, dermal, or eye conditions
Chemical Name: Tantalum Pentachloride
Purity: >99% by weight
CAS Number: 7721-01-9
EINECS Number: 231-749-6
Other Constituents: May include trace acids or hydrolysis byproducts in improperly stored containers
Impurities: Typically under 1%, mainly related to manufacturing process
Inhalation: Move to fresh air, seek immediate medical attention. If breathing stops, use artificial respiration
Skin Contact: Remove contaminated clothing, rinse skin under running water for at least 15 minutes, get medical help
Eye Contact: Rinse eyes cautiously under running water for at least 15 minutes, hold eyelids apart, seek medical aid
Ingestion: Rinse mouth thoroughly, do not induce vomiting, seek immediate medical advice
Notes to Physician: Respiratory complications require oxygen therapy, treat burns aggressively, monitor for corrosive injury complications
Flammability: Not flammable, but may react violently with water
Specific Hazards: Releases hazardous gases like hydrogen chloride when in contact with moisture
Suitable Extinguishing Media: Use dry powder or sand, avoid water or foam
Unsuitable Extinguishing Media: Water, high-pressure water jet
Special Protective Equipment for Firefighters: Self-contained breathing apparatus, fully sealed chemical suit
Thermal Decomposition Products: Hydrogen chloride, tantalum oxides, other toxic fumes
Safety Measures: Fight fire from a safe distance or protected location, evacuate area if needed
Personal Precautions: Isolate spill, keep unprotected people away, wear chemical suit, gloves, eye/face protection, use respirator in confined spaces
Environmental Precautions: Prevent from entering waterways, drains, soil, or vegetation
Clean-up Methods: Use inert, dry absorbent for small spills; transfer residue to a chemically safe container for disposal
Spill Response: Ventilate the area, avoid raising dust, do not allow water to contact the chemical, decontaminate tools with dry material
Additional Advice: Notify local safety officials if large quantities are released, coordinate with hazardous waste teams
Handling: Use only in completely dry, well-ventilated conditions. Wear personal protective equipment at all times. Handle away from all sources of moisture, oxidizers, and incompatible materials
Storage: Store in tightly closed containers made from compatible, corrosion-proof material. Segregate from water, acids, bases, and organics
Storage Conditions: Keep in a dry, cool, well-ventilated place, protected from physical damage
Incompatible Materials: Water, alcohols, strong acids and bases, combustible materials
Labeling: Clear hazard communication, keep MSDS accessible to all handlers
Occupational Exposure Limits: No established exposure limits, use as low as reasonably achievable
Engineering Controls: Use gloveboxes, fume hoods, or dry air enclosures
Respiratory Protection: Full-face respirator with acid gas cartridge when engineering controls cannot eliminate exposure
Eye Protection: Chemical splash goggles plus face shield
Hand Protection: Nitrile or neoprene gloves, double-gloving recommended
Skin and Body Protection: Full coverage chemical-resistant suit and boots
Workplace Hygiene: Wash hands and face before eating, remove contaminated clothing, regularly check for leaks in storage
Appearance: White to pale yellow crystalline solid
Odor: Pungent, chlorine-like
Odor Threshold: Not applicable
pH: Decomposes in water
Melting Point: 216°C
Boiling Point: 246°C (decomposes)
Vapor Pressure: Sublimes easily at room temperature
Solubility: Reacts violently with water, insoluble in most organic solvents
Density: 2.68 g/cm³
Partition Coefficient (n-octanol/water): Not applicable, decomposes in water
Evaporation Rate: Data not available
Flash Point: Not flammable
Autoignition Temperature: Not applicable
Decomposition Temperature: Above 216°C releases corrosive fumes
Chemical Stability: Stable under strictly dry, inert conditions
Reactivity: Highly reactive with water, acids, bases, and reducing agents
Hazardous Reactions: Violent chemical reaction with even small amounts of water
Conditions to Avoid: Moisture, humidity, temperature extremes
Incompatible Materials: Water, alcohols, strong oxidizers, flammable materials
Decomposition Products: Hydrochloric acid, tantalum oxides, toxic fumes
Polymerization: Not expected
Routes of Exposure: Inhalation, ingestion, skin and eye contact
Acute Effects: Severe tissue corrosion, respiratory tract irritation, pulmonary edema, burns
Chronic Effects: Potential for persistent respiratory problems, skin sensitization
Symptoms: Pain, blistering, ulceration, coughing, difficulty breathing, visual impairment if eyes are exposed
Toxicity Data: Oral LD50 (rat): Not precisely established, corrosive effects at very low doses
Carcinogenicity: Not classified by IARC, NTP, or OSHA
Mutagenicity: Not classified; no data available
Other Health Hazards: May exacerbate pre-existing lung or skin conditions, and pose long-term risk if exposure not properly managed
Environmental Effects: Very toxic to aquatic life due to acidification and metal toxicity
Persistence and Degradability: Hydrolyzes rapidly in water, forming hydrochloric acid and insoluble tantalum compounds
Bioaccumulative Potential: Unlikely for tantalum metal, but accumulation of acidic byproducts possible
Mobility in Soil: Low, forms insoluble precipitates
Other Adverse Effects: Large spills threaten aquatic ecosystems, releases acid which devastates pH balance in water bodies
Precautionary Measures: Prevent spillage, avoid contamination of local stormwater and soil systems
Waste Treatment Methods: Treat as hazardous waste using approved chemical neutralization or stabilization methods
Waste Code: US EPA RCRA D002 (corrosive waste)
Contaminated Packaging: Rinse only if safe, otherwise dispose of containers via a licensed hazardous waste contractor
Additional Recommendations: Do not discharge waste to environment, incinerate only if facility is equipped for halogenated wastes
Regulatory Guidance: Follow all federal, state, and local regulations for disposal of corrosive and metal waste
UN Number: 3260
UN Proper Shipping Name: Corrosive Solid, Acidic, Inorganic, N.O.S. (Tantalum Pentachloride)
Transport Hazard Class: 8 (Corrosive substances)
Packing Group: II
Required Labeling: Corrosive
Hazard Identification Number: 80
Special Transport Precautions: Secure containers, avoid rough handling or exposure to moisture, provide emergency response information
Environmental Hazards: Regulated as dangerous goods by land, air, and sea due to high reactivity
OSHA Status: Regulated under Hazard Communication Standard
SARA Title III: Not listed as an extremely hazardous substance, but may be reportable due to hazardous characteristics
TSCA Inventory Status: Listed
REACH Registration: Exempt for research quantities, otherwise subject to registration under EC 1907/2006
WHMIS Classification (Canada): Class E – Corrosive Material
Other Regulations: Subject to local, state, and national hazardous material regulations, environmental emissions controls apply
Label Information: Clear hazard communication, warning statements, emergency contacts required on all containers
Worker Training: All handlers must receive documented training on chemical risk and proper PPE
