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Chemical Name: O,O-Dimethyl-O-(1,2-dibromo-2,2-dichloroethyl) phosphate
Chemical Family: Organophosphate pesticide
Common Applications: Deployed mainly for agricultural pest control and sometimes in vector management programs, this compound has drawn regulatory attention due to its toxicity profile.
CAS Number: 300-76-5
Appearance: Typically found as a colorless or pale yellow liquid, with a faint, somewhat chemical odor familiar to those who have handled similar organophosphates.
Main Hazards: Acute poisoning, skin and eye irritation, and risks related to nervous system disruption dominate concern around this compound.
Signal Words: Danger, Toxic
Routes of Exposure: Inhalation, ingestion, absorption through skin, even accidental splashing or spills pose health risks.
Critical Health Hazards: Cholinesterase inhibition, which leads to muscular tremors, respiratory distress, convulsions, or in high enough doses, fatality.
Environmental Hazards: High aquatic toxicity means runoff or spills often threaten local waterways and wildlife.
Main Ingredient: O,O-Dimethyl-O-(1,2-dibromo-2,2-dichloroethyl) phosphate, often found in high concentrations.
Impurities: Sometimes, trace amounts of other organohalide contaminants occur during manufacturing processes.
Skin Contact: Immediate decontamination with plenty of soap and water, removing contaminated clothing on the spot.
Eye Contact: Prolonged rinsing under running water, ideally with eyelids held open for several minutes.
Inhalation: Moving to fresh air, artificial respiration if breathing stops, oxygen support as necessary, plus urgent medical evaluation.
Ingestion: Rinsing the mouth and prompt transport to emergency facilities, as symptoms can escalate quickly.
Symptoms to Watch For: Nausea, dizziness, bronchoconstriction, sweating, muscle twitches, pinpoint pupils — a cluster pointing to possible organophosphate poisoning.
Suitable Extinguishing Media: Foam, carbon dioxide, or dry chemical powder serve best; water spray might spread spilled chemicals.
Hazards During Fire: Burning generates toxic fumes — including hydrogen bromide, hydrogen chloride, and phosphorus oxides.
Protective Gear: Full body bunker gear, self-contained breathing apparatus, chemical-resistant boots and gloves.
Special Practices: Use water mist for cooling and to knock down vapors, and never overlook the need for decontamination after the fire is controlled.
Spill Response: Evacuate the area, control the source, absorb with inert material like diatomaceous earth, and shovel into secure, clearly labeled containers for safe disposal.
Ventilation: Strong ventilation prevents vapor buildup.
Environmental Precautions: Stop material from reaching nearby water, soil, or sewer systems; always notify local environmental authorities in case of significant release.
Personal Protection During Cleanup: Chemical-resistant gloves, full-face respirators, impervious clothing.
Handling Practices: Always work in a well-ventilated area, avoid direct contact, never eat, drink, or smoke around materials, and minimize time spent handling open containers.
Storage Conditions: Secure facilities at controlled temperatures away from food, beverages, feed, or incompatible reactive agents like strong oxidizers.
Packaging: Corrosion-resistant containers, tightly sealed, stored off the ground with spill containment measures in place.
Engineering Controls: Fume hoods, closed transfer systems, and exhaust fans lower airborne particles to safer levels.
Personal Protection: Respirators approved for organophosphate vapors, sturdy nitrile or butyl gloves, long-sleeved chemical-resistant coveralls, splash-proof goggles or face shields.
Decontamination: Facilities providing emergency eyewash stations and showers on site are essential to minimize harm from accidental splashes.
Monitoring: Regular cholinesterase tests for workers who may experience repeated exposure as part of routine health oversight.
State: Liquid under standard conditions
Color: Colorless to pale yellow
Odor: Faint chemical scent
Boiling Point: Relatively high, but decomposition may start before boiling
Solubility: Limited in water, more soluble in organic solvents
Vapor Pressure: Low, but enough to require good ventilation in processing areas
Stability: Generally stable under cool, dry, and controlled environments
Reactivity: Reacts with strong bases or oxidizers; hydrolysis risk if exposed to water over time
Decomposition Products: Hazardous gases — including bromides, chlorides, and phosphorus compounds — under fire or prolonged heat
Incompatible Materials: Avoid mixing with strong acids, alkalis, or oxidizing agents to sidestep dangerous reactions
Short-Term Effects: Acute toxicity carries a risk of rapid-onset symptoms typical of cholinesterase inhibitors
Long-Term Effects: Chronic exposure can depress nervous system function, possibly triggering persistent neurological deficits
Sensitive Populations: Children and workers with compromised liver function face greater risk
Absorption: Skin and lung absorption pose real danger, not just oral intake
Medical Surveillance: Ongoing worker health checks, especially of neurotransmitter levels
Mobility: Moves easily in soil and water; persisting in the environment brings risk to aquatic life and non-target species
Bioaccumulation: Some evidence points to uptake in aquatic organisms, raising questions about food chain impacts
Persistence and Degradability: Breaks down slowly in the environment, extending contamination potential
Hazard to Wildlife: Highly toxic to fish, amphibians, and invertebrates
Disposal Methods: Incineration at approved hazardous waste facilities or secure chemical landfill disposal for residues
Container Disposal: Decontaminate and puncture containers before disposal to prevent unauthorized reuse
Prohibition: Never pour chemical waste into drains, natural waterways, or regular garbage streams — strong penalties for violations
UN Number: Classified as a hazardous material for shipping by ground, sea, or air
Packing Group: Strict requirements for containment, clear hazard labeling, and certified spill kits accompanying any shipment
Handling in Transit: Trained carriers with chemical emergency protocols safeguard against accidents
Scope of Regulation: Numerous international, national, and local agencies tightly control this agent as a hazardous chemical due to poisoning records and environmental persistence
Worker Safety Laws: Employers must provide hazard communication, training, and PPE for all employees
Sale and Use Restrictions: Some countries ban or sharply restrict agricultural and residential application to limit health dangers
Discharge Reporting: Mandatory notification protocols for accidental releases or spills, with required documentation and investigation
Ongoing Research: Regulatory bodies continue to evaluate health and ecosystem data as more long-term impacts become clear
