Chemical Datasheet


ChemicalIdentifiers | Hazards | ResponseRecommendations |PhysicalProperties |RegulatoryInformation | AlternateChemicalNames

Chemical Identifiers

What is this information?

The Chemical Identifier fields include common identification numbers, theNFPA diamond U.S. Department of Transportation hazard labels, and a general description of the chemical. The information in CAMEO Chemicals comes from a variety of data sources.

CAS Number UN/NA Number DOT Hazard Label USCG CHRIS Code
  • 7647-19-0 PHOSPHORUS PENTAFLUORIDE | CAMEO Chemicals (3)
  • 2198
  • Poison Gas
  • Corrosive
NIOSH Pocket Guide International Chem Safety Card
none none

NFPA 704

data unavailable

General Description

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.


What is this information?

The Hazard fields include special hazard alerts air and water reactions, fire hazards, health hazards, a reactivity profile, and details about reactive groups assignments and potentially incompatible absorbents. The information in CAMEO Chemicals comes from a variety of data sources.

Reactivity Alerts

  • Water-Reactive
  • Air-Reactive

Air & Water Reactions

Fumes strongly in air, with traces of moisture forming POF3 and HF (corrosive). Decomposed in water or moist air to form phosphoric acid and hydrofluoric Acid, corrosive [Merck 11th ed. 1989].

Fire Hazard

(Video) Fluxionality in phosphorus pentafluoride

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

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. For UN1005: Anhydrous ammonia, at high concentrations in confined spaces, presents a flammability risk if a source of ignition is introduced. (ERG, 2020)

Health Hazard

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

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 or dilution water may cause environmental contamination. (ERG, 2020)

Reactivity Profile

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].

Belongs to the Following Reactive Group(s)

  • Acids, Strong Non-oxidizing
  • Oxidizing Agents, Strong
  • Halogenating Agents

Potentially Incompatible Absorbents

Use caution: Liquids with this reactive group classification have been known to react with the absorbents listed below. More info about absorbents, including situations to watch out for...

  • Cellulose-Based Absorbents
  • Mineral-Based & Clay-Based Absorbents
  • Expanded Polymeric Absorbents
  • Dirt/Earth

Response Recommendations

What is this information?

The Response Recommendation fields include isolation and evacuation distances, as well as recommendations for firefighting, non-fire response, protective clothing, and first aid. The information in CAMEO Chemicals comes from a variety of data sources.

Isolation and Evacuation

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

IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area for at least 100 meters (330 feet) in all directions.

(Video) How to Write the Formula for Phosphorus pentafluoride

SPILL: See ERG Table 1 - Initial Isolation and Protective Action Distances on the UN/NA 2198 datasheet.

FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 1600 meters (1 mile) in all directions; also, consider initial evacuation for 1600 meters (1 mile) in all directions. (ERG, 2020)


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

SMALL FIRE: Dry chemical or CO2.

LARGE FIRE: Water spray, fog or regular foam. If it can be done safely, move undamaged containers away from the area around the fire. Do not get water inside containers. Damaged cylinders should be handled only by specialists.

FIRE INVOLVING TANKS: Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles. Cool containers with flooding quantities of water until well after fire is out. Do not direct water at source of leak or safety devices; icing may occur. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks engulfed in fire. (ERG, 2020)

Non-Fire Response

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

Do not touch or walk through spilled material. Stop leak if you can do it without risk. If possible, turn leaking containers so that gas escapes rather than liquid. Prevent entry into waterways, sewers, basements or confined areas. Do not direct water at spill or source of leak. Use water spray to reduce vapors or divert vapor cloud drift. Avoid allowing water runoff to contact spilled material. Isolate area until gas has dispersed. (ERG, 2020)

Protective Clothing

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

Wear positive pressure self-contained breathing apparatus (SCBA). Wear chemical protective clothing that is specifically recommended by the manufacturer when there is NO RISK OF FIRE. Structural firefighters' protective clothing provides thermal protection but only limited chemical protection. (ERG, 2020)

DuPont Tychem® Suit Fabrics

No information available.

First Aid

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

Call 911 or emergency medical service. Ensure that medical personnel are aware of the material(s) involved and take precautions to protect themselves. Move victim to fresh air if it can be done safely. Give artificial respiration if victim is not breathing. Do not perform mouth-to-mouth resuscitation if victim ingested or inhaled the substance; wash face and mouth before giving artificial respiration. Use a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult. Remove and isolate contaminated clothing and shoes. In case of contact with liquefied gas, thaw frosted parts with lukewarm water. In case of contact with substance, immediately flush skin or eyes with running water for at least 20 minutes. In case of skin contact with hydrogen fluoride, anhydrous (UN1052), if calcium gluconate gel is available, rinse 5 minutes, then apply gel. Otherwise, continue rinsing until medical treatment is available. Keep victim calm and warm. Keep victim under observation. Effects of contact or inhalation may be delayed. (ERG, 2020)

(Video) Phosphorus pentabromide: PBr5. Chemical reactions

Physical Properties

What is this information?

The Physical Property fields include properties such as vapor pressure and boiling point, as well as explosive limits and toxic exposure thresholds The information in CAMEO Chemicals comes from a variety of data sources.

Chemical Formula:
  • F5P

Flash Point: data unavailable

Lower Explosive Limit (LEL): data unavailable

Upper Explosive Limit (UEL): data unavailable

Autoignition Temperature: data unavailable

Melting Point: data unavailable

Vapor Pressure: data unavailable

Vapor Density (Relative to Air): data unavailable

Specific Gravity: data unavailable

Boiling Point: data unavailable

Molecular Weight: 125.97

Water Solubility: data unavailable

Ionization Energy/Potential: data unavailable

IDLH: data unavailable

AEGLs (Acute Exposure Guideline Levels)

No AEGL information available.

ERPGs (Emergency Response Planning Guidelines)

No ERPG information available.

(Video) Molecular Geometry of PF5 (phosphorus pentafluoride)

PACs (Protective Action Criteria)

Chemical PAC-1 PAC-2 PAC-3
Phosphorous pentafluoride (7647-19-0) 2 ppm 22 ppm 130 ppm

(DOE, 2018)

Regulatory Information

What is this information?

The Regulatory Information fields include information from the U.S. Environmental Protection Agency's Title III Consolidated List of Lists, the U.S. Cybersecurity and Infrastructure Security Agency's Chemical Facility Anti-Terrorism Standards, and the U.S. Occupational Safety and Health Administration's Process Safety Management of Highly Hazardous Chemicals Standard List (see more about these data sources).

EPA Consolidated List of Lists

No regulatory information available.

CISA Chemical Facility Anti-Terrorism Standards (CFATS)

No regulatory information available.

OSHA Process Safety Management (PSM) Standard List

No regulatory information available.

Alternate Chemical Names

What is this information?

This section provides a listing of alternate names for this chemical, including trade names and synonyms.


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CAMEO Chemicals version 2.8.0 rev 1.

(Video) Chemistry - Molecular Structure (34 of 45) s-p3-d Hybridization - Phosphorus Pentachloride, PCl5


What is the chemical formula for phosphorus pentafluoride? ›

What is phosphorus pentafluoride used for? ›

Phosphorus Pentafluoride is a colorless gas with an unpleasant odor. It is used as a source of Phosphorus in semi- conductors and as a catalyst in ionic polymerization.

Is phosphorus pentachloride safe? ›

* Phosphorus Pentachloride is a CORROSIVE CHEMICAL and contact can severely irritate and burn the skin and eyes with possible eye damage. * Breathing Phosphorus Pentachloride can irritate the nose and throat. * Breathing Phosphorus Pentachloride can irritate the lungs causing coughing and/or shortness of breath.

Which of the following is the correct name for PF5? ›

The name of the compound is Phosphorus pentafluoride.

What is the common name of pcl5? ›


Is phosphorus pentafluoride toxic? ›

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.

What is phosphorus used for in the military? ›

White phosphorus munitions can be used on battlefields to make smoke screens, generate illumination, mark targets or burn bunkers and buildings. Because it has legal uses, white phosphorus is not banned as a chemical weapon under international conventions.

What is phosphorus acid good for? ›

Uses. Phosphoric acid is a component of fertilizers (80% of total use), detergents, and many household cleaning products. Dilute solutions have a pleasing acid taste; thus, it's also used as a food additive, lending acidic properties to soft drinks and other prepared foods, and in water treatment products.

Which phosphorus is most toxic? ›

Yellow phosphorus (white phosphorus) is a significantly more hazardous form of the element and may be present as a contaminant in red phosphorus. This allotrope of phosphorus is extremely toxic and the estimated human lethal dose is 50 - 100 mg.

Which phosphorus is toxic? ›

DESCRIPTION: White phosphorus is a toxic substance produced from phosphate-containing rocks. Industries use white phosphorus to manufacture chemicals used in fertilizers, food additives, and cleaning compounds. In the past, it was used as a pesticide and in fireworks.

Why is pcl5 unstable in nature? ›

Axial bonds are longer than conventional bonds because electrons in them experience higher repulsion. As a result, axial bonds in $ PC{l_5} $ are longer than equatorial ones. As a result, these axial linkages are weak bonds that may readily be broken.

Why all PF5 are not equivalent? ›

PF5 is made up of two types of bond namely covalent and coordinate, hence are not equivalent.

How many bonds are formed in the compound PF5? ›

PF5 Phosphorus Pentafluoride

Phosphorus pentafluoride has 5 regions of electron density around the central phosphorus atom (5 bonds, no lone pairs).

Does PF5 have dipole dipole? ›

The PF5 molecule has a trigonal bipyramidal geometry that makes the arrangement that opposite bonds cancel the dipole moment of each other. Phosphorus pentafluoride is a nonpolar molecule because of the symmetrical structure and even distribution of charges in the molecule.

What happens when PCl5 reacts with water? ›

In its most characteristic reaction, PCl5 reacts upon contact with water to release hydrogen chloride and give phosphorus oxides.

Is PCl5 an acid or base? ›

Phosphorus in Phosphorous pentachloride takes electrons easily from other compounds. As a result, it is classified as a Lewis acid.

What happens when PCl5 is heated? ›

Hence, \[PC{l_5}\] decomposes to form its trihalide when strongly heated. Note: We should note that on heating lightly, phosphorus pentachloride generally sublimates, that is the solid substance changes to its gaseous state. It is only on heating strongly that it decomposes.

Why PCl5 is known? ›

PCl5 forms five bonds by using the d-orbitals to "expand the octet" and have more "places" to put bonding pairs of electrons. NCl5 does not exist because there are no d-orbitals in the second energy level. Therefore there is no way to arrange five pairs of bonding electrons around a nitrogen atom.

What kind of structure is PCl5? ›

PCl 5 shape is trigonal bipyramidal. The molecular geometry of is PCl5 trigonal bipyramid.

Which statement is correct PCl5? ›

The bond length of all P - Cl bonds is same . Solution : In `PCl_(5)` three axial and two equatorial bonds are present.

What is the name for PF3? ›

Phosphorus trifluoride | Phosphorus(III) fluoride | PF3 - Ereztech.

What is the chemical name of pi5? ›

Chemical Component Summary
7 more rows


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