- Phosphoryl chloride
- Phosphoryl trichloride
- Trichlorophosphorus oxide
- Trichlorophosphine oxide
A colorless fuming liquid with a pungent odor.
Solvent in cryoscopy.
Registry Numbers and Inventories.
EC Index Number
Reacts violently with water; Contact with water liberates toxic gas; Very toxic; Toxic; Harmful; Corrosive
R 14 22 26 35 48/23
S 7/8 26 36/37/39 45
Swiss Giftliste 1
Japan ENCS (MITI)
Melting point, °C
1 - 2
Boiling point, °C
Decomposition point, °C
Vapor pressure, mmHg
35 (25 C)
Vapor density (air=1)
1.645 g/cm3 (20 C)
Solubility in water
Partition coefficient, pKow
Heat of vaporization
Hazards and Protection.
Store in a cool, dry, well-ventilated area away from incompatible substances. Corrosives area. Store in a suitable container in a dry area above the substance's freezing point. Keep containers tightly closed.
Wash thoroughly after handling. Wash hands before eating. Remove contaminated clothing and wash before reuse. Use only in a well ventilated area. Follow all MSDS and label precautions even after container is emptied because they may contain product residues. Do not get in eyes, on skin, or on clothing. Keep container tightly closed. Do not ingest or inhale. Do not allow contact with water.
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Avoid runoff into storm sewers and ditches which lead to waterways. Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Provide ventilation.
Stable at room temperature in closed containers under normal storage and handling conditions. Combines vigorously with water with the evolution of heat.
Metals, acids, alcohols, aluminum, amines, phenols. Explosive reactions with 2,6-Dimethylpyridine N-Oxide, Dimethyl Sulfoxide, Ferrocene-1,1'Dicarboxylic Acid, Pyridine N-Oxide (above 60 C), Sodium + Heat. Violent reactions with BI3, Carbon Disulfide, 2,5-Dimethylpyrrole + Dimethyl Formamide, Organic Matter, Zinc Powder. Reacts violently with water and/or steam to produce heat and toxic corrosive fumes.
Hydrogen chloride, phosphine, oxides of phosphorus, irritating and toxic fumes and gases, phosphorous fumes.
Extinguish by smothering with suitable dry chemical. Use water on combustibles burning in vicinity of this material. Use dry chemical, carbon dioxide, or dry sand; do not use water on material itself; if large quantities of combustibles are involved, use water in flooding quantities as spray and fog; use water spray to absorb vapors; cool all affected containers with flooding quantities of water; apply water from as far a distance as possible.
May burn but not ignite readily. May ignite combustibles (wood, paper, oil, clothing, etc.).
Poisonous, corrosive, and irritating gases are generated when this material is heated or is in contact with water. It may ignite other combustible materials (wood, paper, oil, etc.). It reacts violently with water. When heated to decomposition, it emits toxic fumes of chlorides and oxides of phosphorus; it will react with water or steam to produce heat and toxic and corrosive fumes. Incompatible with carbon disulfide; N,N-dimethylformamide; 2,5-dimethylpyrrole; 2,6-dimethyl- pyridine N-oxide; dimethylsulfoxide; Ferrocene-1,1-dicarboxylic acid; water; and zinc. Do not store with combustible materials, particularly fibrous organic materials, or with electrical or other equipment that can be corroded. Reacts violently with moisture.
Fire will produce irritating, corrosive and/or toxic gases. Reaction with water may generate much heat which will increase the concentration of fumes in the air.
TLV: 0.1 ppm; 0.63 mg/m3 (as TWA) (ACGIH 1997). NIOSH REL: TWA 0.1 ppm (0.6 mg/m3) ST 0.5 ppm (3 mg/m3)
May cause liver and kidney damage. Chronic exposure can lead to necrosis of the jaw, or 'phossy-jaw'.
Harmful if swallowed. Causes gastrointestinal irritation with nausea, vomiting and diarrhea. Causes digestive tract burns with immediate pain, swelling of the throat, convulsions, and possible coma.
May be fatal if inhaled. May cause severe irritation of the respiratory tract with sore throat, coughing, shortness of breath and delayed lung edema. May cause severe irritation of the upper respiratory tract with pain, burns, and inflammation. Vapors may cause dizziness or suffocation. May cause nausea, dizziness, and headache. Exposure may produce pulmonary edema which may progress to pneumonia, and cardiac failure may intervene.
Causes severe skin irritation and burns. Causes redness and pain.
Causes severe eye irritation and burns.
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water. Call a poison control center.
Get medical aid immediately. Remove from exposure to fresh air immediately. If breathing is difficult, give oxygen. DO NOT use mouth-to-mouth respiration.
Get medical aid immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Remove all contaminated clothing immediately.
Get medical aid immediately. Do NOT allow victim to rub or keep eyes closed. Extensive irrigation is required (at least 30 minutes).
USCG CHRIS Code
2812 10 11
Std. Transport #