Material Safety Data Sheet (MSDS): Hydrobromic Acid 33% Solution in Acetic Acid

1. Identification

Product Name: Hydrobromic Acid 33% Solution in Acetic Acid
Synonyms: Hydrobromic acid in acetic acid solution
Recommended Use: Laboratory reagent, chemical synthesis
Company Identification: Manufacturer or supplier info available on container label
Emergency Telephone: Emergency contact listed on MSDS provided with purchase

2. Hazard Identification

Classification: Corrosive to skin and eyes, causes respiratory irritation, acetic acid adds flammability concern
Signal Word: Danger
Hazard Statements: Causes severe skin burns and eye damage; may cause respiratory irritation; flammable liquid and vapor; harmful if swallowed; may damage mucous membranes
Pictograms: Corrosive, flame, health hazard
Precautionary Statements: Avoid inhalation, keep away from heat or sparks, wear protective garment, wash thoroughly after handling
Health Effects: Inhalation burns the respiratory tract, launch into a coughing fit, and inflames the throat; skin contact can blister quickly; eye exposure risks blindness; ingestion damages gastrointestinal tract

3. Composition / Information on Ingredients

Hydrobromic Acid: 33% (CAS No. 10035-10-6)
Acetic Acid: 67% (CAS No. 64-19-7)
Additives or Impurities: None reported in standard lab-grade material
Physical Form: Clear, colorless to pale yellow liquid

4. First Aid Measures

Inhalation: Remove victim to fresh air, keep at rest, get immediate medical attention, provide oxygen if breathing difficult
Skin Contact: Remove contaminated clothing, flush exposed area with water for at least fifteen minutes, seek medical help
Eye Contact: Rinse cautiously with water for several minutes, remove contact lenses, get emergency medical care at once
Ingestion: Rinse mouth, do not induce vomiting, immediate medical attention required
Advice to Physician: Treat as corrosive ingestion and exposure, monitor for respiratory distress

5. Fire-Fighting Measures

Suitable Extinguishing Media: Use dry chemical, carbon dioxide, or alcohol-resistant foam
Unsuitable Extinguishing Media: Do not use water jet, may spread flammable liquid
Hazardous Combustion Products: Hydrogen bromide, carbon monoxide, acetic acid fumes, irritating or toxic gases
Protective Equipment for Firefighters: Full self-contained breathing apparatus, chemical-resistant suit, and gloves
Special Firefighting Procedures: Move containers from fire area if safe, cool containers with flooding quantities of water, avoid breathing vapors, fight from maximum distance

6. Accidental Release Measures

Personal Precautions: Evacuate unnecessary personnel, ventilate area, wear respiratory protection, chemical-resistant clothing and eye protection
Environmental Precautions: Prevent further leakage or spillage, do not let product enter drains, waterways, or soil
Methods for Containment and Clean Up: Absorb with inert dry material (sand, earth), neutralize with sodium bicarbonate, place in chemical waste container, ventilate area, do not return spilled material to original containers, dispose as hazardous waste

7. Handling and Storage

Safe Handling: Operate in chemical fume hood, keep containers tightly closed, avoid breathing vapors, prevent skin and eye contact, do not mix with incompatible substances such as strong oxidizers or bases
Storage Conditions: Store in corrosion-resistant containers, keep away from heat and sources of ignition, segregate from bases and oxidizing agents, store in cool, dry, well-ventilated area, label containers clearly, use secondary containment

8. Exposure Controls and Personal Protection

Exposure Limits: Acetic acid: ACGIH TLV 10 ppm (TWA), OSHA PEL 10 ppm; Hydrobromic acid: no specific limit but treat as strong acid
Engineering Controls: Chemical fume hood, eyewash station, safety showers, appropriate exhaust ventilation
Personal Protection: Chemical splash goggles, face shield, gloves (nitrile or butyl rubber), lab coat or apron, closed-toe shoes
Respiratory Protection: Full-face respirator with acid gas cartridge for high vapor or spill situations
Hygiene Measures: Wash hands and forearms thoroughly after handling, remove contaminated clothing and wash before reuse

9. Physical and Chemical Properties

Appearance: Clear, colorless to pale yellow liquid
Odor: Sharp, pungent, vinegar-like
Odor Threshold: Acetic acid odor noticeable below 1 ppm
pH: Strongly acidic
Melting Point/Freezing Point: Below 0°C
Boiling Point/Range: 100-120°C (affected by composition)
Flash Point: 40°C (acetic acid component)
Evaporation Rate: Not established
Flammability: Flammable
Vapor Pressure: Elevated at room temperature
Vapor Density: Heavier than air
Solubility: Fully miscible in water
Partition Coefficient (n-octanol/water): Not determined
Decomposition Temperature: Data not available
Viscosity: Similar to water but slightly higher due to acid content

10. Stability and Reactivity

Chemical Stability: Stable under normal storage conditions
Possibility of Hazardous Reactions: Reacts violently with bases, strong oxidizers, and some metals, producing toxic fumes
Conditions to Avoid: Heat, sparks, open flame, incompatibles (base, oxidizer, metal powders)
Incompatible Materials: Alkali metals, amines, strong bases, strong oxidizers (peroxides, permanganates), reactive metals
Hazardous Decomposition Products: Hydrogen bromide, carbon monoxide, carbon dioxide, acetic acid fumes

11. Toxicological Information

Acute Toxicity: Hydrobromic acid is corrosive, causing rapid tissue damage; acetic acid ingestion or inhalation leads to systemic toxicity
Routes of Exposure: Inhalation, ingestion, skin, and eye contact
Symptoms: Severe burns, coughing, choking, abdominal pain, chest tightness, loss of consciousness after inhaling high concentrations; delayed pulmonary edema possible
Chronic Effects: Possible chronic bronchitis, dental erosion, skin irritation from repeated exposure
Carcinogenicity: Not evaluated as carcinogenic by major agencies
Mutagenicity: No mutagenic effects established
Reproductive Toxicity: No definitive reproductive risk reported for exposures within controlled environments

12. Ecological Information

Aquatic Toxicity: Harmful to aquatic life due to acidity, low dilutions can kill fish and invertebrates
Persistence and Degradability: Organic acids degrade over time, hydrobromic acid fully dissociates in water
Bioaccumulation: Low potential, as components do not persist significantly in biota
Mobility: High in soil and water, acid runoff possible
Other Adverse Effects: Can contribute to acidification of water sources, disrupts local ecosystems if released without neutralization

13. Disposal Considerations

Waste Disposal Methods: Coordinate disposal with hazardous waste contractor, neutralize with soda ash or lime in controlled environment, collect resulting salts and residues for local hazardous waste disposal, do not dispose to sewers or natural waters
Container Disposal: Triple-rinse empty containers, offer for recycling or certified hazardous-waste disposal, label as hazardous
Regulatory Requirements: Follow all local, regional, national, and international regulations

14. Transport Information

UN Number: 1788 (Hydrobromic Acid Solution)
UN Proper Shipping Name: Hydrobromic Acid, Solution
Transport Hazard Class: 8 (Corrosive)
Packing Group: II
Environmental Hazards: Regulated as marine pollutant if shipped in large quantity
Special Precautions for User: Ship in approved corrosive-resistant packaging, mark container with hazard class and UN number, emergency spill procedures must be available during transport

15. Regulatory Information

Occupational Safety and Health Administration (OSHA): Corrosive, hazardous chemical
Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA): Acetic acid reportable quantity 5000 lbs; hydrobromic acid not listed separately
Toxic Substances Control Act (TSCA): Both components listed
European Inventory of Existing Commercial Chemical Substances (EINECS): Present
Other National/International Regulations: Follow country-specific chemical safety rules