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Phosphorus oxychloride

  • Name Phosphorus oxychloride
  • EINECS233-046-7
  • CAS No. 10025-87-3
  • Density1.765 g/cm3
  • PSA26.88000
  • LogP2.81090
  • SolubilityExothermic reaction with water
  • Melting Point1.25 °C
  • FormulaCl3OP
  • Boiling Point105.3 °C at 760 mmHg
  • Molecular Weight153.332
  • Flash PointNon-combustible
  • Transport InformationUN 1810 8/PG 2
  • AppearanceClear to pale yellow Liquid
  • Safety26-45-7/8-36/37/39
  • Risk Codes14-22-26-35-48/23
  • Molecular Structure
    Molecular Structure of 10025-87-3 (Phosphorus oxychloride)
  • Hazard SymbolsVeryT+,CorrosiveC
  • SynonymsVeryT+,CorrosiveC
  • Article Data475

Phosphorus oxychloride Consensus Reports

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

Phosphorus oxychloride Standards and Recommendations

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

Phosphorus oxychloride Specification

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: 

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
guinea pig LC50 inhalation 53ppm/4H (53ppm) BEHAVIORAL: IRRITABILITY

SENSE ORGANS AND SPECIAL SENSES: OTHER: EYE

LUNGS, THORAX, OR RESPIRATION: DYSPNEA
American Industrial Hygiene Association Journal. Vol. 25, Pg. 470, 1964.
 
mouse LC50 inhalation 404mg/m3/2H (404mg/m3)   Weisheng Dulixue Zazhi. Journal of Health Toxicology. Vol. 6, Pg. 98, 1992.
mouse LD50 oral 327mg/kg (327mg/kg)   Weisheng Dulixue Zazhi. Journal of Health Toxicology. Vol. 6, Pg. 98, 1992.
rabbit LDLo skin 1gm/kg (1000mg/kg) BEHAVIORAL: MUSCLE WEAKNESS

LIVER: OTHER CHANGES
National Technical Information Service. Vol. OTS0534840,
rat LC50 inhalation 32ppm/4H (32ppm)   "Sbornik Vysledku Toxixologickeho Vysetreni Latek A Pripravku," Marhold, J.V., Institut Pro Vychovu Vedoucicn Pracovniku Chemickeho Prumyclu Praha, Czechoslovakia, 1972Vol. -, Pg. 17, 1972.
rat LD50 oral 36mg/kg (36mg/kg)   National Technical Information Service. Vol. OTS0534840,
rat LD50 oral 36mg/kg (36mg/kg) LIVER: OTHER CHANGES

GASTROINTESTINAL: OTHER CHANGES
National Technical Information Service. Vol. OTS0534840,

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