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ChemicalBook > Product Catalog >Inorganic chemistry >Inorganic salts >Metal halide and Halogen salt >Non-metal halides, sulfides or sulfonated >Phosphorus oxychloride

Phosphorus oxychloride

Phosphorus oxychloride Structure
CAS No.
10025-87-3
Chemical Name:
Phosphorus oxychloride
Synonyms
POCl3;PHOSPHORYL CHLORIDE;PHOSPHOROUS OXYCHLORIDE;PHOSPHORYL TRICHLORIDE;oxychloride;PHOSPHORUS(V) OXYCHLORIDE;PHOSPHOROXYCHLORIDE;phosphoric trichloride;Phosphoryl oxychloride;OPCl3
CBNumber:
CB5218244
Molecular Formula:
Cl3OP
Molecular Weight:
153.33
MOL File:
10025-87-3.mol
Modify Date:
2024/12/18 14:08:52
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Phosphorus oxychloride Properties

Melting point 1.25 °C(lit.)
Boiling point 107 °C
Density 1.645 g/mL at 25 °C(lit.)
vapor density 5.3 (vs air)
vapor pressure 104 mm Hg ( 50 °C)
refractive index n20/D 1.461
Flash point 105.8°C
storage temp. Store below +30°C.
solubility Phosphorus(V) oxychloride is soluble in many organic solvents.
form Liquid
Specific Gravity 1.692 (15/15℃)
color Colorless
Odor Pungent odour
PH 1.0 (5g/l, H2O, 25℃)
Water Solubility reacts exothermically
Sensitive Moisture Sensitive
Merck 14,7349
Exposure limits TLV-TWA0.628 mg/m3 (0.1 ppm)(ACGIH).
Dielectric constant 14.0（22℃）
Stability Stable. Reacts violently with water. Incompatible with many metals, alcohols, amines, phenol, DMSO, strong bases.
InChIKey XHXFXVLFKHQFAL-UHFFFAOYSA-N
LogP 0.357 (est)
CAS DataBase Reference 10025-87-3(CAS DataBase Reference)
NIST Chemistry Reference Phosphoryl chloride(10025-87-3)
EPA Substance Registry System Phosphorus oxychloride (10025-87-3)

SAFETY

Risk and Safety Statements

Symbol(GHS) 
GHS05,GHS06,GHS08
Signal word  Danger
Hazard statements  H302-H314-H330-H372
Precautionary statements  P280-P301+P312-P303+P361+P353-P304+P340+P310-P305+P351+P338-P314
Hazard Codes  T+,C
Risk Statements  14-22-26-29-35-48/23-25
Safety Statements  26-45-7/8-36/37/39
RIDADR  UN 1810 8/PG 2
OEB C
OEL TWA: 0.1 ppm (0.6 mg/m3), STEL: 0.5 ppm (3 mg/m3)
WGK Germany  1
RTECS  TH4897000
F  19-21
TSCA  Yes
HazardClass  8
PackingGroup  II
HS Code  28121020
Hazardous Substances Data 10025-87-3(Hazardous Substances Data)
NFPA 704
0
4 2

Phosphorus oxychloride price More Price(3)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich(India) 8.22339 Phosphoryl chloride for synthesis 10025-87-3 1L ₹16460 2022-06-14 Buy
Sigma-Aldrich(India) 8.22339 Phosphoryl chloride for synthesis 10025-87-3 8223399300 ₹1057570.01 2022-06-14 Buy
ottokemi P 1755 Phosphorous oxychloride 98% 10025-87-3 500mL ₹2790 2022-05-26 Buy
Product number Packaging Price Buy
8.22339 1L ₹16460 Buy
8.22339 8223399300 ₹1057570.01 Buy
P 1755 500mL ₹2790 Buy

Phosphorus oxychloride Chemical Properties,Uses,Production

Chemical Properties

Phosphorus oxychloride is a clear, colorless to yellow, fuming, oily liquid with a pungent and musty odor.

Physical properties

Colorless fuming liquid with a pungent odor; density 1.645 g/mL; freezes at 1°C; boils at 105.5°C; reacts with water and ethanol.

Uses

Phosphorus oxychloride is an important intermediate in the production of triarylphosphate esters (e.g., triphenyl phosphate and tricresyl phosphate), which have been used as flame retardants and plasticizers for PVC. It is acutely toxic to the eyes, throat, and respiratory tract. Phosphorus oxychloride is also used in nuclear reprocessing, as chlorinating agent, especially to replace oxygen in organic compounds, as solvent in cryoscopy and the semiconductor industry.

Preparation

Phosphorus oxychloride can be prepared from phosphorus trichloride or phosphorus pentachloride. It can be obtained from phosphorus trichloride by cautious addition of potassium chlorate:
3PCl3 + KClO3 → 3POCl3 + KCl
The oxychloride also is obtained by the action of boric acid or oxalic acid with phosphorus pentachloride:
3PCl5 + 2B(OH）3 → 3POCl3 + B2O3 + 6HCl
PCl5 + (COOH）2 → POCl3 + CO + CO2 + 2HCl
Phosphorus oxychloride also is made by heating calcium phosphate in a current of chlorine and carbon monoxide at 350°C:
2Ca3(PO4）2 + 9Cl2 + 6CO → 4POCl3 + 6CaCO3
Alternatively, heating a mixture of calcium phosphate and carbon in a current of chlorine at 750°C yields the oxychloride.

Definition

A white crystalline solid. It is a monobasic acid forming the anion H2PO2 – in water. The sodium salt, and hence the acid, can be prepared by heating yellow phosphorus with sodium hydroxide solution. The free acid and its salts are powerful reducing agents.

Reactivity Profile

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."]

Hazard

The compound is highly irritating to skin, eyes and mucous membranes. Inhaling its vapors can cause pulmonary edema.

Health Hazard

Inhalation of vapors of phosphorus oxychloride produced acute and chronic toxicity in test subjects. In humans, exposure to its vapors may cause headache, dizziness, weakness, nausea, vomiting, coughing, chest pain, bronchitis, and pulmonary edema. Most of these symptoms are manifested from chronic exposure to its vapors.
LC50 value, inhalation (rats): 48 ppm (301 mg/m3)/4 h
Vapors of this compound are an irritant to the eyes and mucous membranes. The liquidis corrosive and can cause skin burns. An oral LD50 value for rats is documented to be 380 mg/kg (NIOSH 1986)..

Fire Hazard

Poisonous, corrosive, and irritating gases are generated when Phosphorus oxychloride is heated or is in contact with water. Phosphorus oxychloride may ignite other combustible materials (wood, paper, oil, etc.). Phosphorus oxychloride reacts violently with water. When heated to decomposition, Phosphorus oxychloride emits toxic fumes of chlorides and oxides of phosphorus; Phosphorus oxychloride 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.

Potential Exposure

Phosphorus oxychloride is used in the manufacture of pesticides, pharmaceuticals, plasticizers, gasoline additives; and hydraulic fluids.

Shipping

UN1810 Phosphorus oxychloride, Hazard class: 6.1; Labels: 6.1-Poisonous materials, 8-Corrosive material, Hazard Zone B.

Purification Methods

Distil the liquid under reduced pressure to separate it from the bulk of the HCl and the phosphoric acid (from hydrolysis); the middle fraction is re-distilled into ampoules containing a little purified mercury. These ampoules are sealed and stored in the dark for 4-6weeks with occasional shaking to facilitate reaction of any free chloride with the mercury. The POCl3 is then again fractionally distilled and stored in sealed ampoules in the dark until required [Herber J Am Chem Soc 82 792 1960]. Lewis and Sowerby [J Chem Soc 336 1957] refluxed their distilled POCl3 with Na wire for 4hours, then removed the Na and again distilled. Use Na only with almost pure POCl3 to avoid explosions. HARMFUL VAPOURS; work in an efficient fume cupboard.

Incompatibilities

A powerful oxidizer. Violently decomposes in water, forming heat and hydrochloric and phosphoric acids. Violent reaction with alcohols, phenols, amines, reducing agents; combustible materials; carbon disulfide; dimethylformamide, and many other many materials. Rapid corrosion of metals, except nickel and lead.

Waste Disposal

Pour onto sodium bicarbonate. Spray with aqueous ammonia and add crushed ice. Neutralize and pour into drain with running water. In accordance with 40CFR165, follow recommendations for the disposal of pesticides and pesticide containers. Must be disposed properly by following package label directions or by contacting your local or federal environmental control agency, or by contacting your regional EPA office.

Phosphorus oxychloride Preparation Products And Raw materials

Raw materials

Distillation equipment Sulfur dioxide Chlorine Oxygen Phosphorus pentachloride
Phosphorus trichloride Dilute hydrochloric acid White phosphorus Quartz
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Preparation Products

2,4-DICHLOROTHIENO[3,2-D]PYRIMIDINE DICAPTHON 2,2'-BITHIOPHENE-5-CARBOXALDEHYDE 5-METHYL-2-METHYLSULFANYL-PYRIMIDINE BENZALDEHYDE NITROGEN MUSTARD
2-Trifluoromethylbenzylsulfonyl chloride 4,6-Dichloro-5-methoxypyrimidine 2-CHLORO-4-METHYLQUINOLINE-3-CARBONITRILE 4-(4-(BIS-(2-CHLOROETHYL)AMINO)BENZYLIDENE-2-PHENYL-OXAZOLINE-5-ONE HEXAFLUOROGLUTARIC ANHYDRIDE
6-N-HEXYLAMINOPURINE 2,4-Dichlorothieno[3,2-d]pyrimidine Starch, hydrogen phosphate, 2-hydroxypropyl ether 2,6-Dichloro-4,8-dipiperidinopyrimidino[5,4-d]pyrimidine 2,4-Dichloro-5-nitropyrimidine
Disodium 4-nitrophenylphosphate 4-tert-Butylphenyl Salicylate Tris(2-ethylhexyl) phosphate 2-ETHOXY-1-NAPHTHALDEHYDE Chlorambucil
4-Chloro-7-azaindole Basic Blue 7 2-(Chloromethyl)-5-propoxypyridine Niclosamide 2-Chloro-4-methylpyrimidine
4-Chloro-3,5-dinitrobenzaldehyde 6-CHLORO-5-CYANO-4-METHOXYMETHYL-3-NITRO-2-PICOLINE 2-Chloro-3',4'-dihydroxyacetophenone 2,4,6-Trichloropyridine DISTARCH PHOSPHATE
Quinazoline, 2-methyl- (6CI,7CI,8CI,9CI) Acetylated Dishtarch Phosphate Pyridine-3-sulfonyl chloride hydrochloride 4-(Dimethylamino)benzophenone 2-Chloro-5-thiophenecarboxaldehyde
P-TOLYL-ACETYL CHLORIDE CHROMONE-3-CARBOXALDEHYDE 3-CHLORO-1H-INDAZOLE 4-TRIFLUOROMETHYLBENZYLSULFONYL CHLORIDE 2-CHLOROLEPIDINE
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Phosphorus oxychloride Suppliers

Global( 416)Suppliers
Supplier Tel Country ProdList Advantage Inquiry
GLR Innovations +91 9891111994 New Delhi, India 4535 58 Inquiry
ANJI BIOSCIENCES +91-9000100077 +91-9000100077 Hyderabad, India 429 58 Inquiry
Nikava Pharmaceutical Industries +91-9653317212 +91-9653317212 Mumbai, India 20 58 Inquiry
JSK Chemicals +919879767970 Gujarat, India 3753 58 Inquiry
LANXESS India Pvt. Ltd. +91-8356878763 +91-8356878763 Maharashtra, India 190 58 Inquiry
United Phosphorus Limited +91-2271528737 +91-9004390689 Mumbai, India 32 58 Inquiry
Sandhya Group +91-9167722041 +91-9167722043 Maharashtra, India 22 58 Inquiry
Namau Chem Pvt Ltd +91-9867360331 +91-9820230331 Maharashtra, India 4 58 Inquiry
Prasol Chemicals Pvt Ltd 91-22-27782555 Maharashtra, India 27 58 Inquiry
Vital Alkoxides Pvt. Ltd. (Vital Group) +91-7929709525 +91-9376624525 Gujarat, India 7 58 Inquiry
Supplier Advantage
GLR Innovations 58
ANJI BIOSCIENCES 58
Nikava Pharmaceutical Industries 58
JSK Chemicals 58
LANXESS India Pvt. Ltd. 58
United Phosphorus Limited 58
Sandhya Group 58
Namau Chem Pvt Ltd 58
Prasol Chemicals Pvt Ltd 58
Vital Alkoxides Pvt. Ltd. (Vital Group) 58

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