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Material Safety Data Sheet for Benzbromarone

Identification

Product Name: Benzbromarone
Synonyms: 3,5-Dibromo-4-hydroxybenzoyl(2-ethylphenyl)methane
Chemical Formula: C17H12Br2O3
Molecular Weight: 424.09 g/mol
CAS Number: 3562-84-3
Recommended Use: Pharmaceutical intermediate, treatment of gout through uricosuric action
Supplier: Chemical supply companies or research labs specializing in active pharmaceutical ingredients
Contact Information: Emergency contact and company information printed on shipping documentation

Hazard Identification

Classification: Harmful if swallowed, hazardous to aquatic life, possible risk of respiratory and skin irritation, possible reproductive effects
Label Elements: Skull and crossbones pictogram, exclamation mark for warning
Hazard Statements: Exposure may irritate the respiratory tract, skin, or eyes; toxic to aquatic organisms; ingestion can harm internal organs; dust formation can impair breathing
Precautionary Statements: Avoid all unnecessary contact, wash hands after handling, use personal protective equipment, protect from environmental release

Composition / Information on Ingredients

Chemical Identity: Benzbromarone
Concentration: Above 99% in pure ingredient form
Impurities: Trace levels of related brominated and phenolic compounds below 1% total
Additives: None in standard preparations

First Aid Measures

Inhalation: Move to fresh air, keep at rest, seek medical attention if breathing difficulty or coughing persists
Skin Contact: Rinse thoroughly with plenty of water, remove contaminated clothing, consult medical staff for stubborn irritation
Eye Contact: Flush with plenty of water for at least 15 minutes, lift eyelids occasionally, contact a physician promptly
Ingestion: Rinse mouth, do not induce vomiting, seek emergency medical treatment, keep patient calm and quiet

Fire-Fighting Measures

Suitable Extinguishing Media: Water spray, dry chemical, carbon dioxide, foam
Unsuitable Media: Direct water jets on product powder can spread dust and encourage chemical reaction
Special Hazards: Can generate toxic fumes of bromine and carbon oxides under fire conditions
Protective Equipment: Full protective clothing including self-contained breathing apparatus, gloves, eye shield

Accidental Release Measures

Personal Precautions: Wear gloves, goggles, dust mask; avoid breathing dust or vapors; evacuate non-essential personnel
Environmental Precautions: Prevent spill from entering drains or waterways, use absorbent barriers around drains if needed
Cleanup Methods: Collect solid or powder using wet methods to prevent dust generation, scoop into labeled containers for disposal, ventilate area, decontaminate floors with soap solution

Handling and Storage

Handling: Keep containers tightly closed, avoid dust and vapor formation, work in well-ventilated areas, wear protective gear at all times
Storage: Store at 15–25°C in dry, cool locations, away from sunlight, acids, and incompatible chemicals, keep separate from food and feedstuff containers, ensure containers remain correctly labeled and sealed
Specific End Uses: Only qualified personnel handle the material in controlled environments

Exposure Controls and Personal Protection

Exposure Limits: No established occupational exposure limits; treat as nuisance dust for general particulate matter
Engineering Controls: Work under local exhaust ventilation or fume hood, use dust suppression methods
Personal Protective Equipment: Latex or nitrile gloves, safety goggles, lab coat, NIOSH-approved respirator for dust or aerosol exposure
Hygiene Measures: Do not eat, drink, or smoke during handling, wash hands and face thoroughly after use, remove contaminated garments before leaving work area

Physical and Chemical Properties

Appearance: Crystalline powder, white to pale yellow
Odor: Odorless
Melting Point: 141–144°C
Boiling Point: Not available
Solubility: Slightly soluble in water, soluble in alcohol and acetone
Density: 1.77 g/cm³ at 20°C
pH: Not applicable in solid form
Partition Coefficient (Log Kow): 4.4
Flash Point: Above 150°C

Stability and Reactivity

Chemical Stability: Stable under normal use and storage conditions
Reactivity: May react with strong oxidizing agents and strong acids
Hazardous Decomposition Products: Releases carbon oxides and hydrogen bromide when burned
Polymerization: No hazardous polymerization expected
Incompatibilities: Strong acids, bases, oxidizers, and moisture

Toxicological Information

Routes of Exposure: Inhalation, skin and eye contact, ingestion
Acute Effects: Respiratory, skin, or eye irritation possible; harmful if swallowed
Chronic Effects: Prolonged or repeated exposure may damage liver, testicular tissue, or trigger photosensitivity; data from animal studies show reproductive toxicity
Carcinogenicity: Not listed as carcinogen by major agencies
LD50: Oral (rat) 440 mg/kg as reported in published literature

Ecological Information

Aquatic Toxicity: Highly toxic to aquatic organisms, potential to bioaccumulate
Persistence and Degradability: Slow degradation in soil and water, may persist in the environment
Mobility in Soil: Low to moderate, leaching possible under certain conditions
Bioaccumulative Potential: High, due to lipophilicity
Other Adverse Effects: Avoid large releases to sewage systems or water bodies as ripple impact on aquatic community can occur

Disposal Considerations

Waste Treatment Methods: Chemical residues and contaminated containers classified as hazardous waste, dispose by incineration at licensed chemical destruction facility
Contaminated Packaging: Clean with appropriate solvent, collect rinse waters for disposal, do not re-use containers
Regulatory Control: Comply with local, national, and international hazardous waste disposal regulations and transport rules

Transport Information

UN Number: See specific shipping documentation, as not all formulations require a UN number
Proper Shipping Name: Benzbromarone, chemical, n.o.s.
Transport Hazard Class: 6.1 (Toxic substances, if required)
Packing Group: III
Environmental Hazards: Considered marine pollutant; mark packaging accordingly
Special Transport Precautions: Secure tightly in original containers, keep upright, avoid heat and shocks in transit

Regulatory Information

Global Inventories: Not universally listed, check jurisdiction requirements for pharmaceutical and chemical substances
Labelling Requirements: Skull and crossbones, aquatic hazard, hazard statements required for packaging in workplace settings
Restrictions: Approval for use and disposal handled by health, toxic substances, and environmental regulators
Worker Safety: Rules on workplace exposure, training, and reporting in regulated sectors; proper documentation required for use in pharmaceutical processes