Molecular Structure of Triiron dodecarbonyl (CAS NO.17685-52-8):

Systematic Name: Carbon monooxide - iron (4:1) 
Molecular Formula: Fe₃(CO)₁₂
Molecular Weight: 503.66 
EINECS: 241-668-5
Melting Point: 165 °C (dec.)(lit.)
Density: 1.99
storage temp.: 2-8 °C
Sensitive: Air Sensitive 
Solubility in water: insoluble
Appearance: black powder or crystals

Safety Information of Triiron dodecarbonyl (CAS NO.17685-52-8):
Hazard Codes: F,Xn,T
Risk Statements: 11-23/24/25-36/37/38-20/22 
R11:Highly flammable. 
R23/24/25:Toxic by inhalation, in contact with skin and if swallowed. 
R20/22:Harmful by inhalation and if swallowed. 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 16-26-28-33-36/37/39-45-7/9-24 
S16:Keep away from sources of ignition. 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S28:After contact with skin, wash immediately with plenty of soap-suds. 
S33:Take precautionary measures against static discharges. 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection. 
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) 
S24:Avoid contact with skin. 
S7:Keep container tightly closed. 
S9:Keep container in a well-ventilated place.
RIDADR: UN 3175 4.1/PG 2
WGK Germany: 3
F: 10-23
HazardClass: 6.1
PackingGroup: II

  Triiron dodecarbonyl (CAS NO.17685-52-8), its Synonyms are Di-mu-carbonyldecacarbonyl-triangulo-triiron ; Iron, di-m-carbonyldecacarbonyltri-,triangulo ; Ironcarbonyl (Fe3(CO)12) (6CI) ; Iron, di-m-carbonyldecacarbonyltri-, triangulo- (8CI) ; Dodecacarbonyl-triangulo-triiron ; Dodecacarbonyltriiron;Dodecacarbonyltriiron(0) . It is soluble in nonpolar organic solvents to give intensely green solutions. Most low nuclearity clusters are pale yellow or orange. Hot solutions of Triiron dodecarbonyl decompose to an iron mirror, which can be pyrophoric in air. The solid decomposes slowly in air, and thus samples are typically stored cold under an inert atmosphere.