Iron pentacarbonyl

  • Iron carbonyl
  • Pentacarbonyl iron
Formula
Fe(CO)5
Structure
Description
A yellow to dark red liquid.
Uses
To make finely divided iron, so-called carbonyl iron, which is used in the manufacture of powdered iron cores for high frequency coils used in the radio and television industry, as antiknock agent in motor fuels, as catalyst and reagent in organic reactions.

Registry Numbers and Inventories.
CAS
13463-40-6
EC (EINECS/ELINCS)
236-670-8
RTECS
NO4900000
RTECS class
Organometallic
UN (DOT)
1994
Merck
12,5111
Beilstein/Gmelin
3567 (G)
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C5FeO5
Formula mass
195.9
Melting point, °C
-21.0
Boiling point, °C
103
Vapor pressure, mmHg
40
Vapor density (air=1)
6.74
Critical temperature
285-288
Critical pressure
29.6
Density
1.457 g/cm3 (20 C)
Solubility in water
Insoluble
Refractive index
1.453 (20 C)
Heat of vaporization
40.1 kJ/mol
Heat of combustion
-1617 kJ/mol

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Keep container closed when not in use. Refrigerator/flammables. Store under nitrogen. Store in a cool, dry area away from incompatible substances.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use only in a well ventilated area. Ground and bond containers when transferring material. Use spark-proof tools and explosion proof equipment. Do not get in eyes, on skin, or on clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid contact with heat, sparks and flame. Do not ingest or inhale. Use and store under nitrogen. Use only in a chemical fume hood. Discard contaminated shoes. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames. Do not breathe vapors.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective gloves and clothing to prevent skin exposure.
Respirators
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Small spills/leaks
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Clean up spills immediately, using the appropriate protective equipment. Remove all sources of ignition. Use a spark-proof tool. Provide ventilation. A vapor suppressing foam may be used to reduce vapors.
Stability
Powder or liquid is pyrophoric. Decomposes on exposure to air and light. Reacts violently with water.
Incompatibilities
Strong oxidizing agents, strong bases, amines, halogens, hydrogen, carbontetrachloride, alkalies, mercaptans, mercury salts.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
-15
Autoignition, °C
49
Upper exp. limit, %
12.5
Lower exp. limit, %
3.7
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Water runoff can cause environmental damage. Dike and collect water used to fight fire. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Will burn if involved in a fire. Use water spray to keep fire-exposed containers cool. Containers may explode in the heat of a fire. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. For large fires, use water spray, fog, or alcohol-resistant foam. Use water spray to cool fire-exposed containers. Water may be ineffective.
Fire potential
Flammable, dangerous fire risk. Pyrophoric in air; burns to Fe2O3.
Hazards
This material may be ignited by heat, sparks, or flames. Vapors may travel to ignition source and flash back. Containers may explode in the heat of fire. Evolution of carbon monoxide may create a poison hazard. This material presents a vapor explosion and poison hazard indoors, outdoors, or in sewers. Evolves carbon monoxide on exposure to air or to light. Emits carbon monoxide when heated to decomposition. Avoid acetic acid, water, nitrogen oxide, transition metal halides, and zinc and it burns in air. Decomposes in acids and alkalies. Protect from light and air.
Combustion products
Fire will produce irritating, corrosive and/or toxic gases.
Health
1
 
Flammability
3
 
 
Reactivity
1
 

Health.
Exposure limit(s)
TLV (as Fe): 0.1 ppm; 0.23 mg/m3 (STEL : 0.2 ppm; 0.45 mg/m3) (ACGIH 1994). NIOSH REL: TWA 0.1 ppm (0.23 mg/m3) ST 0.2 ppm (0.45 mg/m3)
Exposure effects
Effects may be delayed. In 12-36 hours fever, cyanosis, cough, chest pain, shortness of breath , and circulatory collapse may occur. Death may occur from overexposu re within 4-11 days due to pneumonia, liver and kidney damage, vascula r injury and CNS degeneration.
   Ingestion
May be fatal if swallowed. May cause central nervous system depression, kidney damage, and liver damage. May cause gastrointestinal irritation with nausea, vomiting and diarrhea. Immediate symptoms include headache and dizziness.
   Inhalation
May be fatal if inhaled. Vapors may cause dizziness or suffocation. Can produce delayed pulmonary edema. Vapors have strong effect on respiratory organs and mucous membranes. May cause nausea and vomiting. Continued inhalation causes unconscio usness.
   Skin
May be fatal if absorbed through the skin. May cause severe skin irritation and burns. Substance is readily absorbed through the skin. May cause cyanosis of the extremities.
   Eyes
May cause eye irritation and possible burns. May cause chemical conjunctivitis and corneal damage.

First aid
 
   Ingestion
Never give anything by mouth to an unconscious person. Get medical aid immediately. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. Do not use mouth-to-mouth respiration if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device.
   Skin
Get medical aid immediately. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. SPEEDY ACTION IS CRITICAL!
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number
1994
Response guide
Hazard class
6.1
PRTC
T
Packing Group
I
 
USCG CHRIS Code
PCI
 
Std. Transport #
4927004