EPA Extremely Hazardous Substances List. Reported in EPA TSCA Inventory.

OSHA PEL: TWA 0.1 ppm
ACGIH TLV: TWA 0.1 ppm
DFG MAK: 0.2 ppm (1 mg/m³)
DOT Classification:  8; Label: Corrosive, Poison

The Phosphorus oxychloride with CAS registry number of 10025-87-3 is also known as Trichlorophosphine oxide. The systematic name is Phosphoric trichloride. Its EINECS registry number is 233-046-7. In addition, the formula is Cl₃OP and the molecular weight is 155.33. This chemical reacts violently with water and incompatible with many metals, alcohols, amines, phenol, dmso and strong bases. It should be sealed in ventilated, cool, dry place away from heat. What's more, this chemical can be used for preparation of diphenyl-ethylhexyl ester, phosphate, plasticizer, organic pesticide and long-acting sulfa drugs. It also is used as dye intermediates, chlorinating agent and catalyst for organic synthesis.

Physical properties about Phosphorus oxychloride are: (1)ACD/LogP: 0.357; (2)ACD/LogD (pH 5.5): 0.36; (3)ACD/LogD (pH 7.4): 0.36; (4)ACD/BCF (pH 5.5): 1.10; (5)ACD/BCF (pH 7.4): 1.10; (6)#H bond acceptors: 1; (7)Index of Refraction: 1.453; (8)Molar Refractivity: 23.47 cm³; (9)Molar Volume: 86.837 cm³; (10)Polarizability: 9.304 10-24cm³; (11)Surface Tension: 40.890998840332 dyne/cm; (12)Density: 1.766 g/cm³; (13)Enthalpy of Vaporization: 34.35 kJ/mol; (14)Boiling Point: 105.3 °C at 760 mmHg; (15)Vapour Pressure: 34.5709991455078 mmHg at 25°C

Preparation of Phosphorus oxychloride: it is prepared by the reaction of phosphorus trichloride with oxygen at the temperature of 20-50 °C.

2 PCl₃ + O₂ → 2 O=PCl₃

When you are using this chemical, please be cautious about it. As a chemical, it is harmful if swallowed and very toxic by inhalation. When contacting with water, it liberates toxic gas and it can cause severe burns. Furthermore, it has danger of serious damage to health by prolonged exposure through inhalation. During using it, wear suitable protective clothing, gloves and eye/face protection. Keep container tightly closed and dry. If contact with eyes accidently, rinse immediately with plenty of water and seek medical advice. In case of accident or if you feel unwell seek medical advice immediately.

You can still convert the following datas into molecular structure:
1. Canonical SMILES: O=P(Cl)(Cl)Cl
2. InChI: InChI=1S/Cl3OP/c1-5(2,3)4
3. InChIKey: XHXFXVLFKHQFAL-UHFFFAOYSA-N

The toxicity data is as follows: