Chemistry informtion about Nickel Carbonyl (CAS NO.13463-39-3) is:
IUPAC Name: Carbon Monoxide ; Nickel
Synonyms: (Beta-4)-Nickelcarbonyl(Ni(Co)₄ ; (T-4)-Nickelcarbonyl(Ni(Co)₄ ; Ni(Co)₄ ; Nichel Tetracarbonile ; Nicheltetracarbonile ; Nickel Carbonyl (Ni(Co)₄) ; Nickel Carbonyl (Ni(Co)₄), (T-4)- ; Nickel Carbonyle
Product Categories: Organometallics 
MF: C₄NiO₄
MW: 170.73
EINECS: 236-669-2 
Density: 1,32 g/cm³ 
Melting Point: -19°C
Flash Point: <-20°C
Boiling Point: 43°C
Stability: Stable. Highly flammable and highly reactive. Explosion hazard.
Following is the molecular structure of Nickel Carbonyl (CAS NO.13463-39-3) is:

 Nickel Carbonyl (CAS NO.13463-39-3) can be used to nickel coat steel and other metals and to make very pure nickel.

 Preparation Products are Acrylic acid --> Propionic acid --> Ethyl acrylate .

Nickel Carbonyl is highly hazardous, much more so than implied by its CO content, reflecting the effects of the nickel if it were released in the body. Nickel carbonyl may be fatal if absorbed through the skin or more likely, inhaled due to its high volatility. Its LC50 for a 30-minute exposure has been estimated at 3 ppm, and the concentration that is immediately fatal to humans would be 30 ppm. Some subjects exposed to puffs up to 5 ppm described the odour as musty or sooty, but since the compound is so exceedingly toxic its smell provides no reliable warning against a potentially fatal exposure. Historically, laboratories that used Ni(CO)₄ would keep a canary in the lab as an indicator of nickel carbonyl toxicity, due to the higher sensitivity of birds to this toxin。The vapours of Ni(CO)₄ can autoignite. Nickel carbonyl poisoning is characterized by a two-stage illness. The first consists of headaches and chest pain lasting a few hours, usually followed by a short remission. The second phase is a chemical pneumonitis which starts after typically 16 hours with symptoms of cough, breathlessness and extreme fatigue. These reach greatest severity after four days, possibly resulting in death from cardiorespiratory or renal failure. Convalescence is often extremely protracted, often complicated by exhaustion, depression and dyspnea on exertion. Permanent respiratory damage is unusual. The carcinogenicity of Ni(CO)₄ is a matter of debate.

NTP 10th Report on Carcinogens. IARC Cancer Review: Animal Sufficient Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 7 ,1987,p. 264.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Animal Limited Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 49 ,1990,p. 257.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) . EPA Extremely Hazardous Substances List. Nickel and its compounds are on the Community Right-To-Know List. Reported in EPA TSCA Inventory.

Confirmed carcinogen with experimental carcinogenic, tumorigenic, and teratogenic data. A human poison by inhalation. Poison experimentally by inhalation, intravenous, subcutaneous, and intraperitoneal routes. An experimental teratogen. Other experimental reproductive effects. Human systemic effects by inhalation: somnolence, fever, and other pulmonary changes. Vapors may cause coughing, dyspnea (difficult breathing), irritation, congestion and edema of the lungs, tachycardia (rapid pulse), cyanosis, headache, dizziness, and weakness. Toxicity by inhalation is believed to be caused by both the nickel and carbon monoxide liberated in the lungs. Chronic exposure may cause cancer of lungs, nasal sinuses. Sensitization dermatitis is fairly common. Probably the most hazardous compound of nickel in the workplace. A common air contaminant. It is lipid soluble and can cross biological membranes (e.g., lung alveolus, blood-brain barrier, placental barrier).
A very dangerous fire hazard when exposed to heat, flame, or oxidizers. Moderate explosion hazard when exposed to heat or flame. Explodes when heated to about 60°. Explosive reaction with liquid bromine, mercury + oxygen, oxygen + butane. Violent reaction with dinitrogen tetraoxide, air, oxygen. Reacts with tetrachloropropadiene to form the extremely sensitive explosive dicarbonyl trichloropropenyl dinickel chloride dimer. Can react with oxidizing materials. To fight fire, use water, foam, CO₂, dry chemical. When heated to decomposition or on contact with acid or acid fumes, it emits highly toxic fumes of carbon monoxide. See also NICKEL COMPOUNDS and CARBONYLS.
Hazard Codes:
F
T+
N
Risk Statements:
R11:Highly flammable. 
R26:Very toxic by inhalation. 
R40:Limited evidence of a carcinogenic effect. 
R50/53:Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. 
R61:May cause harm to the unborn child.
Safety Statements:
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) 
S53:Avoid exposure - obtain special instructions before use. 
S60:This material and its container must be disposed of as hazardous waste. 
S61:Avoid release to the environment. Refer to special instructions / safety data sheets.
RIDADR: 1259
HazardClass: 6.1(a)
PackingGroup: I

OSHA PEL: TWA 0.001 ppm (Ni)
ACGIH TLV: TWA 0.05 mg(Ni)/m³
DFG MAK: DFG TRK: Animal Carcinogen, Suspected Human Carcinogen
NIOSH REL: (Nickel Carbonyl) TWA 0.001 ppm
DOT Classification:  6.1; Label: Poison, Flammable Liquid

For occupational chemical analysis use NIOSH: Nickel Carbonyl, 6007.
Nickel Carbonyl (CAS NO.13463-39-3) was first synthesised in 1890 by Ludwig Mond by the direct reaction of nickel metal with CO. This pioneering work foreshadowed the existence of many other metal carbonyl compounds, including those of V, Cr, Mn, Fe, and Co. At 323 K (50 °C (122 °F)), carbon monoxide is passed over impure nickel. The optimal rate occurs at 130 °C. Ni(CO)₄ is not readily available commercially. It is conveniently generated in the laboratory by carbonylation of commercially available bis(cyclooctadiene)nickel(0).

Nickel Carbonyl (CAS NO.13463-39-3) is a clear colorless to yellow liquid. It is very toxic by ingestion and inhalation and carcinogenic. Its denser than water and insoluble in water. Its vapors heavier than air. It flammable over a wide range of vapor-air concentrations. It is peroxidized by air to give a solid deposit that tends to decompose and ignite.It is easily oxidized. It presents a very serious fire hazard if exposed to heat, flame, sparks, oxidizing agents. Explodes when heated to about 60°C. Reacts explosively with bromine (liquid), oxygen in the presence of mercury, or hydrocarbons (butane) mixed with oxygen. Undergoes violent reactions with air, oxygen, dinitrogen tetraoxide. Caused an explosion when added to an n-butane-oxygen at 20-40°C [J. Am. Chem. Soc. 70:2055-6. 1948]. Reacts with tetrachloropropadiene to form an extremely explosive dinickel chloride dimer. Emits highly toxic fumes of carbon monoxide when heated to decomposition or in contact with mineral acids or acid fumes [Bretherick, 5th ed., 1995, p. 1734]. Vapor explodes in air or oxygen at 20°C and a partial pressure of 15 mm. Probable oral lethal dose for a human is between 50 and 500 mg/kg, between one teaspoon and one ounce per 150 lb. person. Nickel Carbonyl  has also been estimated to be lethal in man at atmospheric exposures of 30 ppm for 20 minutes. Autopsies show congestion, collapse, and tissue destruction, as well as hemorrhage in the brain. Dermatitis, recurrent asthmatic attacks, and increased number of white blood cells (eosinophils) in respiratory tract are acute health hazards. Nickel Carbonyl is poisonous. It can be fatal if inhaled, swallowed, or absorbed through skin. Vapors may cause irritation, congestion, and edema of lungs.Vapor forms explosive mixtures with air. Vapor is heavier than air and may travel a considerable distance to source of ignition and flash back. Liquid may explode when heated under confinement. Vapor explosion and poison hazard indoors, outdoors, or in sewers. Runoff to sewer may create fire and explosion. May explode at 68F in presence of air or oxygen. Avoid contact with heat, acid or acid fumes as these cause the emission of highly toxic fumes. Avoid contact with air, ignition sources and vapors entering a confined space.