Phosphorus oxychloride3

Phosphorus oxychloride

Phosphoric trichloride;Phosphoryl chloride;Phosphorus oxychloride;Phosphorus oxytrichloride;Phosphorus chloride oxide (POCl3);Trichlorophosphine oxide;Phosphoryl trichloride;Phosphorus oxide trichloride;Phosphoroxychloride;Trichlorophosphorus oxide;Phosphoric chloride;Phosphorus trichloride oxide;Phosphoroxytrichloride;Phosphorus chloride oxide (PCl3O);Phosphorus monoxide trichloride;Phosphonyl trichloride;Phosphorous chloride oxide (POCl3);39380-77-3;1258871-72-5

10025-87-3

Cl3OP

InChIKey=XHXFXVLFKHQFAL-UHFFFAOYSA-N

153.33

153.33

233-046-7

9XM78OL22K

0190

1810

DTXSID5029710

Clear, colorless to yellow, oily liquid [Note: A solid below 34 degrees F].|Mobile, fuming liquid

2812102000

Coating Additive

17.1

1.26

Colorless Liquid

1.645 g/cm³ @ Temp: 25 °C

1.25 °C

105.8 °C

105.8°C

1.453

H2O: reacts exothermically;Phosphorus(V) oxychloride is soluble in many organic solvents.

Store below +30°C.

104 mm Hg ( 50 °C)

5.3 (vs air)

Oral-Rat LD50: 380 mg/kg

It will explode in the heat of water, and emit toxic chloride and phosphorus oxide gas

POOR STIRRING DURING FORMYLATION OF 2,5-DIMETHYLPYRROLE WITH THE PREFORMED COMPLEX OF DIMETHYLFORMAMIDE WITH PHOSPHORYL CHLORIDE CAUSED ERUPTION OF FLASK CONTENTS. REACTION OF COMPLEX WITH LOCAL EXCESS OF PYRROLE MAY HAVE BEEN INVOLVED.

Pungent & musty odor

Ratio of specific heats of vapor (gas): 1.290 Cv/Cp (est)|Heat of formation = -597.1 kJ/mol|Very reactive to nucleophiles, hydrolyzed rapidly by water at room temperature|Hydroxyl radical reaction rate constant = 4X10-14 cu cm/molec-sec at 25 °C

Fumes in air. Reacts exothermically (with possible spattering) with water to form fumes of phosphoric acid and hydrochloric acid. Phosphorus oxychloride reacts vigorously with water to generate gaseous HCl. Based on a scenario where the chemical is spilled into an excess of water (at least 5 fold excess of water), half of the maximum theoretical yield of Hydrogen Chloride (hydrochloric acid) gas will be created in 0.12 minutes. Experimental details are in the following: "Development of the Table of Initial Isolation and Protective Distances for the 2008 Emergency Response Guidebook", ANL/DIS-09-2, D.F. Brown, H.M. Hartmann, W.A. Freeman, and W.D. Haney, Argonne National Laboratory, Argonne, Illinois, June 2009.

Acyl Halides, Sulfonyl Halides, and Chloroformates

Water-Reactive

PHOSPHORUS OXYCHLORIDE is water reactive. Incompatible with strong oxidizing agents, alcohols, bases (including amines). May react vigorously or explosively if mixed with diisopropyl ether or other ethers in the presence of trace amounts of metal salts [J. Haz. Mat., 1981, 4, 291]. Combining the chloride with zinc dust caused immediate ignition, due to the formation of phosphine gas which ignites, [Mellor, 1940, Vol. 8, 1025]. An exotherm starting with the mixing of phosphorus oxychloride with acetone (a ketone) lead to an explosion, may behave similarly with other ketones, [Organic Process Research and Development, Vol.4, No. 6,200, "Phosphorus Oxychloride and Acetone: An Incompatibility Investigation Using ARC."]

Not flammable (USCG, 1999)

Noncombustible Liquid, but may set fire to combustible materials.

The vapour is heavier than air.

PRODUCTS OF ITS REACTION WITH WATER RAPIDLY CORRODE STEEL & MOST METALS

97 BTU/LB= 54 CAL/G= 2.3X10+5 JOULES/KG

Critical temperature: 331.8 °C