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Chemical Name: Phosphorus Trichloride
Formula: PCl3
Form: Colourless to pale yellow fuming liquid
Smell: Pungent, suffocating
Use: Commonly found as a reagent making organophosphorus compounds, agrochemicals, and other industrial chemicals
Hazard Class: Corrosive substances
Main Health Dangers: Severe burns to skin and eyes, respiratory tract irritation, pulmonary edema possible after inhalation
Environmental Danger: Toxic to aquatic life
Flammability: Not flammable yet reacts violently with water and many organic materials, releasing toxic gases
Labeling: Corrosive, toxic, environment hazard
Main Content: Phosphorus trichloride, content above 99% in industrial grades
Impurities: Small amounts of phosphorous oxychloride or hydrochloric acid in technical grades
Inhalation: Get to fresh air immediately, loosen clothing, support breathing and watch out for delayed lung symptoms
Skin Contact: Remove contaminated clothing, wash skin with lots of water, seek medical help for burns or strong pain
Eye Contact: Rinse eyes gently with water at least 15 minutes, call emergency help
Swallowing: Do not induce throwing up, rinse mouth and get rapid medical attention
Extinguishing Media: Use dry chemical, foam, or carbon dioxide – never water
Harmful Gases: Fires produce poisonous fumes including phosphorus oxides and hydrochloric acid
Protective Gear: Firefighters put on full gear with breathing apparatus
Special Issues: In contact with water, releases hazardous gases quickly
Personal Protection: Shield skin and eyes, use chemical resistant gloves, and wear a proper respirator
Evacuation: Move people away from spill area
Spill Control: Soak up with absorbent material like dry sand or lime, pack in tight containers
Clean Up: Do not let residue touch water, keep it away from sewers and drains
Ventilation: Keep area with lots of airflow to avoid gas buildup
Handling: Always work in a chemical hood or ventilated spot, avoid breathing vapors or getting any liquid on skin
Storage: Store in well-sealed, corrosion-proof containers under dry, cool conditions, away from water and humidity
Compatibility: Do not store with water, oxidizers, or strong bases
Labeling: Make sure containers are clearly marked and checked regularly for leaks and corrosion
Work Practices: Use only in places with strong ventilation
Personal Safety: Wear chemical splash goggles, resistant gloves, and full apron or suit
Respiratory Safety: Use a certified respirator for hazardous chemicals when handling large amounts or where engineering controls can't keep vapors below safe levels
Hygiene: Wash thoroughly after handling, keep work clothes separate from street clothes, never eat or smoke near work area
Appearance: Colourless to slightly yellow liquid
Smell: Strong, pungent, irritating
Boiling Point: Around 76°C
Melting Point: -94°C
Density: Roughly 1.574 g/cm³
Solubility: Reacts rapidly and violently with water, producing heat and toxic gases
Vapor Pressure: Elevated at room temperature, promotes rapid evaporation
Stability: Keeps stable under dry, controlled conditions
Dangerous Reactions: Violent chemical action with water, steam, moist air, and many organic chemicals
Hazardous Decomposition: Produces phosphorus oxychloride, hydrochloric acid, and other toxic products when exposed to heat or water
Incompatible Substances: Strong oxidizers, strong bases, metals, water-bearing materials
Routes of Exposure: Inhalation, skin contact, eye contact, ingestion
Acute Symptoms: Burns, blisters, breathing distress, coughing, delayed lung effects
Long-term Effects: Chronic bronchitis, potential sensitivity of airway, possible permanent eye damage
Lethal Dose: Low — takes only small amounts to cause serious poisoning by mouth or breathing
Cancer Risk: Not classed as a carcinogen, but repeated exposure brings lasting harm
Harm to Aquatic Life: Highly toxic, endangers fish and water organisms quickly
Environmental Persistence: Reacts with water to make acids that lower water pH and damage streams and soil
Bioaccumulation: No strong data, but threat rises with repeated spills and run-off
Spill Risk: Fast reaction with water means leaks near waterways are emergencies
General Practice: Never pour down drains or dispose of with household waste
Waste Handling: Collect with dry, inert absorbent, contain in tight chemical drums
Legal Requirements: Follow local, state, or national hazardous waste rules
Advice: Hand off to licensed waste handlers trained for chemical disposal
Classification: Regulated as a dangerous good on roads, trains, boats, and planes
Packing Groups: High hazard; uses certified chemical safe tanks and drums
Label Requirements: Marked as toxic, corrosive, dangerous to the environment
Precautions: Keep away from water, moisture, food, and incompatible chemicals during shipping
Regulation: Strict controls in many places under hazardous chemicals laws
Workplace Safety: Companies mandate protective measures, safety training, and emergency response plans
Chemical Bans: Forbidden for general public use or open sale
Exposure Limits: Local authorities or agencies may set workroom concentration limits; review regularly and monitor workplace air
