Phosphorpentafluorid

Toxic Gases & Vapors -> Corrosive Gases

Reactive agents - 2nd degree

-84.6 °C

-75 °C @760 [mm Hg]

-93.8 °C

-83 °C

Phosphorus pentafluoride is a colorless, poisonous, nonflammable, compressed gas with a pungent odor. It is extremely irritating to skin, eyes and mucus membranes. It is very toxic by inhalation and can cause pulmonary edema. Toxic and corrosive fumes are generated when this material is exposed to water or steam. Prolonged exposure of the containers to fire or heat may result in their violent rupturing and rocketing. It is used as a polymerization catalyst.

Colorless gas with an unpleasant odor; [HSDB]

TROUTON CONSTANT 21.8; DIPOLE MOMENT 0; DOES NOT ATTACK DRY GLASS EVEN AT 250 °C, BUT A SLIGHT TRACE OF MOISTURE LEADS TO FORMATION OF POTASSIUM OXYTRIFLUORIDE (POF3) AND HYDROGEN FLUORIDE (HF); WATER HYDROLYSIS ULTIMATELY YIELDS PHOSPHORIC ACID; INTERMEDIATES ARE OXYFLUORPHOSPHATES; LEWIS ACID ... FORMS CRYSTALLINE ADDN PRODUCT PHOSPHORUS PENTAFLUORIDE-NITROGEN DIOXIDE (PF5-NO2) AT -10 °C WHICH DISSOCIATES ON WARMING

Reacts immediately with water to hydrolyze, first to POF3 and then to the fluorophosphonic acids.

Heat of fusion 12.1 kJ/mol; Heat of formation 1210 kJ/mol

... Behaves as a Lewis Acid showing electron-accepting properties, generally in a ratio of 1:1 with Lewis bases. It forms complexes with amines, ethers, nitriles, sulfoxides, and other bases.

Danger

H280 (81.8%): Contains gas under pressure; may explode if heated [Warning Gases under pressure]

P260, P264, P271, P280, P284, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P320, P321, P363, P403+P233, P405, P410+P403, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 143 reports by companies from 5 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Excerpt from ERG Guide 125 [Gases - Toxic and/or Corrosive]:

· Some may burn but none ignite readily.

Excerpt from ERG Guide 125 [Gases - Toxic and/or Corrosive]:

· TOXIC and/or CORROSIVE; may be fatal if inhaled, ingested or absorbed through skin.

PHOSPHORUS PENTAFLUORIDE is a colorless, toxic gas, when exposed to air it strongly fumes. Vigorous reaction with water or steam leads to decomposition (hydrolysis) producing toxic and corrosive fumes. When heated to decomposition it emits toxic fumes of fluoride and oxides of phosphorus [Lewis, 3rd ed., 1993, p. 1034].

If ... THERE IS NO FIRE, go directly to the Table of Initial Isolation and Protective Action Distances /(see table below)/ ... to obtain initial isolation and protective action distances. IF THERE IS A FIRE, or IF A FIRE IS INVOLVED, go directly to the appropriate guide /(see guide(s) below)/ and use the evacuation information shown under PUBLIC SAFETY. /Phosphorus pentafluoride; Phosphorus pentafluoride, compressed/

/GUIDE 125: GASES - CORROSIVE/ Health: TOXIC; may be fatal if inhaled, ingested or absorbed through skin. Vapors are extremely irritating and corrosive. Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite. Fire will produce irritating, corrosive and/or toxic gases. Runoff from fire control may cause pollution. /Phosphorus pentafluoride; Phosphorus pentafluoride, compressed/

/GUIDE 125: GASES - CORROSIVE/ Fire or Explosion: Some may burn, but none ignite readily. Vapors from liquefied gas are initially heavier than air and spread along ground. Some of these materials may react violently with water. Cylinders exposed to fire may vent and release toxic and/or corrosive gas through pressure relief devices. Containers may explode when heated. Ruptured cylinders may rocket. /Phosphorus pentafluoride; Phosphorus pentafluoride, compressed/

/GUIDE 125: GASES - CORROSIVE/ Public Safety: CALL Emergency Response Telephone Number ... . As an immediate precautionary measure, isolate spill or leak area for at least 100 meters (330 feet) in all directions. Keep unauthorized personnel away. Stay upwind. Many gases are heavier than air and will spread along ground and collect in low or confined areas (sewers, basements, tanks). Keep out of low areas. Ventilate closed spaces before entering. /Phosphorus pentafluoride; Phosphorus pentafluoride, compressed/

For more DOT Emergency Guidelines (Complete) data for PHOSPHORUS PENTAFLUORIDE (9 total), please visit the HSDB record page.

Phosphorus Pentafluoride

UN2198

Div 2.3 Poisonous gas (49 eCFR § 173.115)

Div 2.3 Poisonous gas (49 eCFR § 173.115)

Phosphorus pentafluoride, adsorbed

UN3524

· CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not available or no answer, refer to appropriate telephone number listed on the inside back cover.

· Do not touch or walk through spilled material.

Excerpt from ERG Guide 125 [Gases - Toxic and/or Corrosive]:

General First Aid:

· Wear positive pressure self-contained breathing apparatus (SCBA).

TIH (Toxic Inhalation Hazard) - Term used to describe gases and volatile liquids that are toxic when inhaled. Some are TIH materials themselves, e.g., chlorine, and some release TIH gases when spilled in water, e.g., chlorosilanes. [ERG 2016].

1.0 [mg/m3], as F, inhalable fraction[German Research Foundation (DFG)]

If material involved in fire: Do not use water on material itself. Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.) Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Do not apply water to point of leak in tank car or container.

MAY BE STORED IN STEEL CYLINDERS.

IN GENERAL, MATERIALS ... TOXIC AS STORED OR WHICH CAN DECOMP INTO TOXIC COMPONENTS DUE TO CONTACT HEAT, MOISTURE, ACIDS OR ACID FUMES, SHOULD BE STORED IN COOL WELL-VENTILATED PLACE, OUT OF ... SUN, AWAY FROM ... FIRE HAZARD & SHOULD BE PERIODICALLY INSPECTED & MONITORED. INCOMPATIBLE MATERIALS SHOULD BE ISOLATED ...

SRP: At the time of review, criteria for land treatment or burial (sanitary landfill) disposal practices are subject to significant revision. Prior to implementing land disposal of waste residue (including waste sludge), consult with environmental regulatory agencies for guidance on acceptable disposal practices.

SRP: The scientific literature for the use of contact lenses in industry is conflicting. The benefit or detrimental effects of wearing contact lenses depend not only upon the substance, but also on factors including the form of the substance, characteristics and duration of the exposure, the uses of other eye protection equipment, and the hygiene of the lenses. However, there may be individual substances whose irritating or corrosive properties are such that the wearing of contact lenses would be harmful to the eye. In those specific cases, contact lenses should not be worn. In any event, the usual eye protection equipment should be worn even when contact lenses are in place.

SRP: Local exhaust ventilation should be applied wherever there is an incidence of point source emissions or dispersion of regulated contaminants in the work area. Ventilation control of the contaminant as close to its point of generation is both the most economical and safest method to minimize personnel exposure to airborne contaminants.

If material not involved in fire: Keep material out of water sources and sewers. Attempt to stop leak if without undue personnel hazard. Do not use water on material itself.

Personnel protection: Avoid breathing vapors. Keep upwind. ... Avoid bodily contact with the material ... Do not handle broken packages unless wearing appropriate personal protective equipment. Wash away any material which may have contacted the body with copious amounts of water or soap and water.

Evacuation: If material leaking (not on fire) consider evacuation from downwind area based on amount of material spilled, location and weather conditions.

Excerpt from ERG Guide 125 [Gases - Toxic and/or Corrosive]:

Immediate precautionary measure

INTENSELY IRRITATING TO SKIN, EYES, MUCOUS MEMBRANES. INHALATION MAY CAUSE PULMONARY EDEMA.

SYMPTOMATOLOGY: 1. Severe gastritis or gastroenteritis with abdominal pain, retching, and prolonged vomiting, beginning 10-60 min after ingestion. Vomitus may become bloody. Diarrhea is sometimes violent; the feces are watery and later tarry. Dehydration becomes intense. 2. Shock, pallor, cyanosis and coldness. Rapid, weak or imperceptible pulse, low blood pressure, rapid and shallow respirations. 3. Sometimes breathing is deep and rapid, reflecting an accompanying metabolic acidosis. 4. Drowsiness, hyporeflexia, dilated pupils, coma. Vasomotor instability, shock or coma and a serum iron level in great excess of the total iron-binding capacity are poor prognostic signs. /Fluoride/

SYMPTOMATOLOGY: 5. Liver injury, consisting of hemorrhagic necrosis which is usually reversible. 6. Death from shock, usually in 4-5 hr. Sometimes following apparent recovery, pneumonia with fever or secondary shock may cause death 1-3 days later. 7. Among survivors pyloric stenosis and mild hepatic cirrhosis may be encountered as persistent sequelae, but recovery is usually complete. /Fluoride/

Corrosive to eyes and skin.

INHALATION MAY CAUSE PULMONARY EDEMA.

Used as a catalyst, a fluorinating agent, and a source of phosphorus for ion implantation in semi-conductor manufacturing; [HSDB]

Semiconductor Manufacturing [Category: Industry]

Used as a source of phosphorus for ion implantation in semi-conductors; an excellent catalyst, especially in ionic polymerizations

Phosphorus pentafluoride is a relatively mild fluorinating agent of very minor industrial importance.

... FROM PHOSPHORYL FLUORIDE, HYDROGEN FLUORIDE & SULFUR TRIOXIDE.

Phosphorus pentafluoride was first prepared in 1876 through fluorination of phosphorus pentachloride using arsenic trifluoride. Other routes to PF5 have included fluorination of PCl5 by HF, AgF, benzoyl fluoride, SbF3, PbF2, or CaF2. It can also be made by the reaction of PF3 and fluorine, chlorine, or chlorine in contact with calcium fluoride; by the reaction of FSO3H on fluoride and phosphate-containing rocks; by the reaction of SF6 and PF3 at high (about 400 °C) temperature; VF5 and POF3, and Ca3P2 and NF3; by the reaction of alkali or alkaline- earth metal fluorides or fluorosulfonate fluorides with P2O5 or H3PO4 at 180-200 °C; by the reaction of POF3 and HF at 60-80 °C; HPF6.XH2O and SO3 or HSO3F; by reaction of POF3.SO3 adduct with HF; and by the reaction of carbonyl fluoride with POF3. From 1968-1973 a series of patents reported the production of PF5, PF3, POF3, and the hexa-, di-, and monofluorophosphoric acids by fluorination of phosphoric and phosphorus acids using calcium fluorosulfate fluoride, CaFSO3F, produced by reaction of CaF2 and SO3.