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Chemical Name: 1,3-Dichloropropene
Chemical Formula: C3H4Cl2
Common Use: Soil fumigant in agriculture, especially for nematode control
Synonyms: Telone, D-D, Telone II
Appearance: Clear to amber liquid, sharp irritating odor reminiscent of chloroform
Boiling Point: Just under 109°C, so workers outdoors may notice quick vapor formation on warm days
Acute Health Effects: Contact with eyes or skin spells trouble—redness, severe irritation, and burns can happen fast; breathing vapor brings coughing, nose irritation, and feeling unwell
Chronic Risks: People around this chemical for long jobs report dry or cracked skin, headaches, and potential impacts on lung health
Flammability: Vapors catch fire easily, flashpoint sits surprisingly low (23°C), and that means risk grows around hot engines or welding
Environmental Harm: Waterways exposed to spills may see direct hits on fish populations, with small creatures and invertebrates taking a hit first
Health Symbols: Corrosive, toxic, environmental hazard
Main Component: 1,3-Dichloropropene (usually >90%)
Isomer Details: Mixture of cis- and trans-isomers, though typical products tilt toward the cis side
Impurities: Often includes trace amounts of 1,2-dichloropropane and stabilized with an antioxidant, though these rarely top 2%
Inhalation: Move to clean air at once. Remove contaminated clothing, give oxygen if breathing is hit. Coughing and throat pain linger for hours, so checking in with paramedics brings peace of mind.
Skin Contact: Rinse thoroughly for at least 20 minutes under running water. Long exposures may bring blisters or burns, and covering exposed areas with loose dressings, not ointments, helps until a doctor sees the injury.
Eye Contact: Flush eyes with water—hold lids open, keep cool. Even minor splashes can mean lingering pain and blurred vision.
Ingestion: Rinse mouth, do not induce vomiting. Doctors will want to monitor for lung injury via ingestion due to the high risk of chemical pneumonia.
Suitable Extinguishing Media: Use dry powder, foam, or CO₂; water spray works to cool drums but can spread the liquid
Hazardous Combustion Products: Burning releases hydrochloric acid fumes, carbon monoxide, and black smoke
Personal Protection for Firefighters: Self-contained breathing apparatus and full chemical-resistant suit; direct exposure or vapor clouds put lungs at risk
Special Hazards: Leaking containers may create explosive vapor-air mixes that settle in low spots or flow along surfaces
Personal Protection: Ventilating the area quickly matters most. Standard nitrile gloves just don’t cut it for heavy duty—special chemical-resistant gloves and splash goggles protect skin and eyes. Breathing protection (cartridges for organic vapors) is required in enclosed spaces.
Spill Cleanup: Absorb smaller spills with sand or earth, then scoop into separate drums. Shovel up soil surrounding bigger spills, since this liquid seeps down and keeps threatening ground water.
Environmental Precautions: Fence off contaminated zones. Prevent runoff into storm drains; ditching quick action lessens the blow to local ponds and stream life.
Handling Precautions: Pour with splash protection and keep work upwind. Never smoke or use flame nearby, because vapors build fast and light up just as quick.
Storage Conditions: Store in cool, well-ventilated areas, preferably separate from food or feed. Metal corrosion shortens container lifespans, so drum checks beat surprises. Keep tightly sealed and away from sunlight.
Incompatibilities: Avoid mixing with strong bases, oxidizers, or copper alloys; otherwise, the risk of violent reactions rises sharply.
Workplace Limits: OSHA sets the permissible exposure limit at 1 ppm time-weighted average. This feels low, but headaches show up in real jobs even under this level if ventilation fails.
Engineering Controls: General and local exhaust ventilation both matter; negative pressure rooms give the best safety in closed warehouses.
Personal Protective Equipment: Full face shields, chemical-resistant gloves (butyl rubber recommended), sturdy aprons, and boots. Organic vapor respirators matter for the short haul; supplied air for big jobs or poor ventilation.
Hygiene Practices: Wash hands and face after work, change out of contaminated clothing before leaving worksite to limit take-home exposure
Physical State: Oily liquid at room temperature
Odor: Strong, sharp, stinging
Boiling Point: Around 109°C
Melting Point: Below -100°C
Density: About 1.2 g/cm³, slightly heavier than water
Solubility: Modest in water; mixes easily with many organic solvents
Vapor Pressure: High enough that vapor fills storage spaces without proper seals
Chemical Stability: Breaks down slowly in heat and sunlight; stability drops near open flames or strong alkali
Conditions to Avoid: Sparks, heat, flames, strong sunlight, contact with bases or oxidizers
Hazardous Decomposition: HCl, dioxins, and phosgene may form if burned or mixed with strong chemicals
Routes of Exposure: Inhalation, skin absorption, eye contact, ingestion
Acute Toxicity: Eye and respiratory tract irritation common at low exposure, high-dose inhalation linked to central nervous system effects including dizziness and headache
Long-Term Effects: Prolonged contact can scar lungs, damage liver and kidneys, and possibly affect fertility based on animal testing
Cancer Risk: IARC groups 1,3-dichloropropene as possibly carcinogenic to humans, so the exposure risks grow for people handling it every season over years
Aquatic Toxicity: Fish kills occur with modest spills—rain or runoff amplifies the effect
Soil Impact: Fumigant properties mean it lingers in ground, breaking down to short-chain hydrocarbons; movement through soil depends on moisture and temperature
Persistence: Not persistent in the atmosphere, but groundwater threat sticks around if leaks seep deep
Waste Treatment: Anything contaminated—soil, clothing, absorbents—needs hazardous waste disposal. Incineration under tightly controlled conditions works best.
Container Disposal: Triple-rinse drums, don’t reuse for water or food, and send to approved reclaimer if possible for metal recovery.
Regulatory Jump: Improper dumping costs local water and the farmer’s bottom line; getting rid of even small batches legally goes a long way for community goodwill.
UN Number: Listed under hazardous material codes in most international agreements
Class: Flammable liquid, toxic hazard
Packaging Group: II, signals substantial danger during trucking or shipping
Labeling: “Flammable” and “Toxic” stickers must be visible; truck cabs need plackards for both hazards
Transport Risk: Hot weather boosts vapor risk; mechanical handling with leaks spells trouble for road crews and local residents alike
Worker Safety Rules: Covered tightly by national occupational health standards, with training required annually for handlers and applicators. Record-keeping tracks use and worker exposure over time.
Pesticide Approvals: Approved in some markets for specific crops but banned altogether in parts of Europe due to groundwater and health concerns
Community Right-to-Know: Public disclosure required in various countries for storage volumes and spill notifications, driven by community demand for transparency
Air and Water Standards: Maximum contaminant levels set for public drinking water; frequent reevaluation means standards keep getting tighter as new science comes in.
