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Name: 2-Bromoacetophenone
Chemical Formula: C8H7BrO
CAS Number: 70-11-1
Common Uses: Laboratory chemical, intermediate in organic synthesis, sometimes found as a lachrymatory agent
This substance often sits on the shelf in research labs, waiting for its call in synthetic chemistry. Its utility spreads in making pharmaceutical compounds or in certain specialty chemical processes, but its hazards can’t hide behind its small label.
Main Risks: Harmful if inhaled, toxic by skin contact, severe eye irritant, potential respiratory tract irritant
GHS Classification: Acute Toxicity (oral, dermal, inhalation), Eye Irritation, Skin Corrosion/Irritation
Signal Word: Danger
Many overlook how quickly exposure gets out of hand. 2-Bromoacetophenone packs a punch, attacking the eyes and lungs almost immediately. Its tear-producing effect earns it a notorious reputation. Accidental splashes shoot straight to severe irritation, far beyond mere nuisance.
Chemical: 2-Bromoacetophenone
Purity: Often above 97% in lab supply
Impurities: Small amounts of benzaldehyde, acetic acid, or dibromo derivatives may appear during improper storage
Careless handling during synthesis or storage can enhance the risk by building up more reactive impurities, making an already tricky compound even less predictable.
Eye Contact: Immediate and copious flushing with water for at least 15 minutes, medical attention required
Skin Contact: Remove contaminated clothing, rinse skin with soap and water
Inhalation: Move to fresh air, assist breathing if necessary, seek urgent medical help
Ingestion: Rinse mouth, never induce vomiting, immediate medical evaluation
Delay magnifies the damage here. Splashing eyes or inhaling vapors means pain hits fast and help cannot wait. Emergency showers and eyewashes need to be ready, as response time is critical to protect vision and respiratory function.
Suitable Extinguishers: Dry chemical, CO2, alcohol-resistant foam
Hazardous Combustion Products: Releases hydrogen bromide, carbon oxides, noxious fumes
Protective Equipment: Full-face self-contained breathing apparatus, full protective gear
Lab fires involving 2-Bromoacetophenone turn dangerous, feeding toxic fumes into the air. Firefighters need heavy shielding to avoid the acute effects, and anyone nearby draws risk of exposure, not just burns but corrosive and systemic poisoning.
Personal Protection: Respiratory mask, chemical resistant gloves, safety goggles
Spill Cleanup: Ventilate area, avoid breathing dust or vapor, absorb with inert material, collect for disposal
Environment Protection: Prevent leakage into drains and sewers
Spills aren’t minor inconveniences. The vapor irritates workers and bystanders, and any leak moves swiftly through air or water. Laboratories need clear procedures with proper tools. Cleaning is only safe for staff who understand the immediate risks.
Safe Handling: Work in a chemical fume hood, avoid skin and eye contact, do not breathe vapors
Storage Needs: Store in tightly closed container, cool dry place, away from light and incompatible substances (oxidizers, acids, base)
Even tight storage can become a liability if people grow complacent. A lapse in closing containers or stacking chemicals nearby can change a routine night into an emergency, so regular checks and proper labeling should be common practice.
Engineering Controls: Fume hood, adequate ventilation
Personal Protective Equipment: Nitrile gloves, lab coat, goggles, face shield in splash risk scenarios
Respiratory Protection: NIOSH-approved cartridge respirators for organic vapors
It pays to invest in high-quality PPE, not just minimum standards. Many cases of exposure come not from lack of gear but from overconfidence and taking shortcuts. Training also trumps warning posters, because direct instruction connects the risks to daily habits.
Appearance: Pale yellow crystalline solid
Odor: Pungent, tear-producing
Melting Point: 51–54 °C
Boiling Point: 260–262 °C
Solubility: Limited in water, better in organic solvents (ethanol, ether)
The stinging vapor makes its presence felt right away, which helps catch notice before more serious exposure stacks up. Its volatility deserves respect since even small spills vaporize enough to cause trouble.
Chemical Stability: Stable under recommended storage, but decomposes with excessive heat or prolonged light exposure
Reactive With: Strong bases, strong oxidizers, reducing agents
Hazardous Decomposition: Hydrogen bromide, carbon monoxide, carbon dioxide
Thermal breakdown, even from poor storage near heat, produces nasty gases. Researchers who cut corners on storage wind up courting preventable accidents, since waste heat, old lights, or incompatible materials crack down on stability.
Routes of Exposure: Inhalation, skin, eyes, ingestion
Acute Effects: Causes severe irritation to eyes, skin, respiratory tract; strong lachrymatory action
Chronic Effects: Repeated exposure may produce dermatitis, lung irritation, or allergic reactions
Repeated cases of minor contact or inhalation turn up among busy labs, often because people focus more on results than routine safety checks. Long-term care depends on stopping these small mistakes before health problems add up.
Aquatic Toxicity: Harmful to aquatic organisms, possible long-term effects in water environments
Environmental Fate: Persistence likely due to low solubility and slow degradation; potential for bioaccumulation
Disposal into drains or improper waste streams causes more than just personal harm — here, the broader ecosystem bears the impact. Chemical runoff, even in small volumes, adds to waterway toxicity and puts aquatic life at risk, reinforcing the need for containment.
Waste Method: Handle as hazardous waste, send to licensed chemical incinerator
Do Not: Pour down drains or add to regular trash
The temptation to cut costs or save time in disposal often stems from not seeing the result. Every shortcut risks future contamination, fines, or worse, long-term damage to local water or landfill sites. Training custodial staff and enforcing strong waste management in all labs limits the harm and long-term costs.
UN Number: 2810
Classification: Toxic Substance
Packing Group: III
Transport in sealed, user-proof containers is required, with clear hazard labeling on all surfaces. Movement between sites isn’t just a paperwork game, it’s a community safety issue. One careless transport, one leaky drum, spells disaster for the handlers and the community around them.
Regulatory Status: Subject to local, national, and international controls as a hazardous chemical
Restriction: Listed as acutely hazardous in several chemical inventories
There’s no “gray area” with toxic chemicals like this. Policy exists for good reason. Enforcement falls not just to agencies but to employees, supervisors, and procurement teams. Regular updates on regulations, combined with immediate access to compliance resources, keeps dangerous lapses off the record.
