Product Name: Mucobromic Acid
Chemical Name: 2,3-Dibromo-4-oxobut-2-enoic acid
CAS Number: 3296-90-0
EC Number: 221-938-7
Synonyms: 2,3-Dibromo-crotonic acid, Muco dibromide
Recommended Use: Laboratory chemicals, research and development
Manufacturer: Chemical suppliers specializing in laboratory and industrial reagents
Contact for Emergency: Poison Control Centers, local authorities familiar with chemical emergencies
Address: Listed on the supplied material packaging or corresponding company website
GHS Classification: Acute Toxicity Oral (Category 3), Skin Corrosion/Irritation (Category 1B), Serious Eye Damage (Category 1), Specific Target Organ Toxicity (Category 3)
Signal Word: Danger
Hazard Statements: Causes severe skin burns and eye damage, toxic if swallowed, may cause respiratory irritation
Pictograms: Corrosive, Skull and Crossbones, Exclamation Mark
Effects of Exposure: Skin blistering, deep tissue burns, vision impairment, severe respiratory distress, nausea, possible organ damage
Precautionary Statements: Avoid all contact with skin, eyes, and clothing; do not ingest or inhale; always use with adequate ventilation
Chemical Name: Mucobromic Acid
CAS Number: 3296-90-0
Concentration: 98-100% (pure form sold for laboratory use)
Molecular Formula: C4H2Br2O3
Molecular Weight: 273.87 g/mol
Impurities: May include minute traces of hydrobromic acid or related brominated organics depending on source
Inhalation: Move exposed individual to fresh air immediately, loosen tight clothing, keep warm, seek immediate medical help; rescue breathing if breathing stops
Skin Contact: Remove contaminated clothing and shoes; flush affected skin thoroughly with running water for at least 15 minutes, monitor for persistent irritation, seek hospital care
Eye Contact: Rinse eyes with plenty of water for at least 20 minutes, keep eyelids apart, avoid rubbing eyes, get urgent specialist attention
Ingestion: Do not induce vomiting, rinse mouth with water, keep head low if vomiting occurs naturally, call poison control or emergency services straight away
Important Symptom Information: Chemical burns, ulcerations, respiratory distress, risk of shock
Advice for Doctors: Supportive care, possible gastric lavage, airway management, hydration monitoring
Suitable Extinguishing Media: Dry chemical, carbon dioxide, alcohol-resistant foam, water spray
Unsuitable Media: Direct water jet since it may spread chemical contamination
Specific Hazards: Releases toxic, corrosive bromine vapors; thermal decomposition can yield carbon monoxide, carbon dioxide, hydrogen bromide gases
Protective Equipment: Firefighters should wear full protective gear and self-contained breathing apparatus
Special Procedures: Remove containers from fire area if safe, stay upwind, contain run-off water due to environmental concerns
Personal Precautions: Evacuate unnecessary personnel, avoid breathing vapors, avoid skin and eye contact, use personal protective equipment—gloves, goggles, impervious clothing
Environmental Precautions: Prevent entry into sewers, soil, and water systems; notify local authorities if substantial spillage occurs
Containment Methods: Neutralize spills with sodium bicarbonate or similar inorganic alkaline material
Clean-Up Procedures: Absorb liquid with inert absorbent (sand, earth, vermiculite), shovel chemical into containers for disposal following local regulations, ventilate area
Decontamination: Wash spill area with large amounts of water blended with mild detergent, collect washings for safe disposal, avoid discharge to environment
Handling: Use only in chemical fume hood, avoid inhalation, splash, and prolonged contact by working with gloves, goggles, lab coats and respiratory protection if ventilation is inadequate
Safe Storage Conditions: Store in original tightly closed containers, away from incompatible substances such as bases, oxidizers, strong reducing agents
Storage Temperature: Keep at controlled room temperature (15–30°C), ensure dry, well-ventilated, and locked storage
Technical Measures: Segregate from acids and bases, keep container upright to avoid leaks, use chemical-resistant shelving
Additional Precautions: Clearly label all containers, restrict access to authorized and trained personnel only
Engineering Controls: Local exhaust ventilation, automatic air draw systems, closed transfer systems for bulk handling
Occupational Exposure Limits: No American Conference of Governmental Industrial Hygienists (ACGIH) limit set; minimize exposure as much as possible
Personal Protective Equipment: Nitrile or neoprene gloves, chemical-resistant apron, impact/splash goggles, face shield, if airborne risk exists—NIOSH-approved respirator
Hygiene Measures: Wash hands before eating, after handling; do not eat or drink in work area
Monitoring Procedures: Use direct-reading instruments to check for vapor leaks in work areas
Appearance: White to pale yellow crystalline solid
Odor: Faint, sweet, pungent
pH: Strongly acidic (below 2 in 10% water solution)
Melting Point: 120–123°C
Boiling Point: Data not available, decomposes before boiling
Flash Point: Not readily flammable
Solubility in Water: Moderate
Vapor Pressure: Low at room temperature
Density: Approximately 2.35 g/cm³
Partition Coefficient (log Kow): Estimated -1.8 (poor lipid solubility)
Other Data: Reacts with strong bases, degrades at elevated temperature or in alkaline pH, may stain skin
Chemical Stability: Stable in solid and dry form at room temperature, decomposes under strong heat or on wet exposure
Incompatible Materials: Strong acids, ammonia solutions, oxidizing or reducing agents, reactive metals
Hazardous Decomposition: Carbon monoxide, carbon dioxide, hydrogen bromide, oxides of bromine on thermal breakdown
Polymerization: Not likely to polymerize under normal conditions
Reactivity Profile: Reacts with alkalis, may generate heat and toxic fumes, sensitive to moisture
Acute Toxicity: Oral rat LD50 = 70 mg/kg (highly toxic); causes corrosive damage to mucous membranes
Chronic Effects: Not well studied—persistent dermatitis, reversible eye damage, respiratory irritation in animal models
Skin Corrosion/Irritation: Rapid blistering, scarring, ulceration possible with prolonged exposure
Eye Damage: Severe burn risk, blurred or lost vision on contact
Inhalation: Sore throat, chest tightness, coughing, chemical pneumonitis at high concentration
Carcinogenicity: Not included in IARC, NTP, or OSHA lists as carcinogen
Sensitization: No definitive reports; repeated contact should be avoided
Other Effects: Nausea, vomiting, risk of shock if large amounts absorbed
Ecotoxicity: Very toxic to aquatic life; potential to damage fish, invertebrates, aquatic plants
Persistence and Degradability: Hydrolyzes in water, breaks down to brominated acids that persist in environment
Bioaccumulative Potential: Unlikely due to weak lipid solubility
Mobility in Soil: Dissolves, may move rapidly through moist soil if spilled
Other Adverse Effects: May lower pH of surface water, impacting aquatic ecosystems; contact local authorities about remediation if contamination occurs
Disposal Methods: Collect and dispose of as hazardous waste in accordance with local, state, and national laws
Contaminated Packaging: Rinse containers, clean only by certified facilities, never reuse for food or drink storage
Incineration: Approved chemical incinerators, ensuring hydrogen bromide scrubbing systems
Precautions: Avoid direct release to environment, label all outgoing waste packages clearly, store for disposal away from general trash
UN Number: UN 3261
Proper Shipping Name: Corrosive Solid, Acidic, Organic, N.O.S. (Mucobromic Acid)
Transport Hazard Class: 8 (Corrosive substances)
Packing Group: II
Hazard Labels: Corrosive
Special Precautions for User: Use leak-proof, tightly closed packaging, transport only by persons trained in chemical safety
Additional Regulations: Ensure documentation meets international requirements for chemical shipments (IATA, ADR, IMDG)
OSHA Status: Hazardous under the Hazard Communication Standard (29 CFR 1910.1200)
TSCA Status: Listed in the TSCA Chemical Substance Inventory
SARA Title III: Not a listed Extremely Hazardous Substance or Section 313 Chemical, but report releases as required
EC Regulations: Classified as hazardous according to Regulation (EC) No 1272/2008 (CLP/GHS)
Other Local and International Regulations: Compliance with workplace control requirements, chemical incident reporting laws, and export/import controls
Labeling Requirements: Product must carry full hazard and precautionary statements, risk and safety phrases where applicable, pictograms for corrosive and toxic hazards
