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Dicobalt octacarbonyl

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Name

Dicobalt octacarbonyl

EINECS 233-514-0
CAS No. 10210-68-1 Density 1.81
PSA 0.00000 LogP -1.66400
Solubility Insoluble in water. Soluble in alcohol, ether and carbon disulfideSoluble in ether, naphtha and carbon disulfide. Slightly soluble in alcohol. Insoluble in water. Melting Point 51-52 °C
Formula C8Co2 O8 Boiling Point 52 deg C
Molecular Weight 341.94 Flash Point -13 °C
Transport Information UN 3190 4 Appearance crystalline solid
Safety Poison by inhalation and intraperitoneal routes. Questionable carcinogen. Decomposes in air to form a product that ignites spontaneously in air. When heated to decomposition it emits acrid smoke and fumes. See also CARBONYLS and COBALT COMPOUNDS.

Analytical Methods:

   

For occupational chemical analysis use OSHA: #ID-125 g.

Risk Codes 11-22-40-43-48/20-52/53-62
Molecular Structure Molecular Structure of 10210-68-1 (COBALT CARBONYL) Hazard Symbols TLV: 0.1 mg(Co)/m3.
Synonyms

Cobaltcarbonyl (Co2(CO)8); Cobalt octacarbonyl (Co2(CO)8); Cobalt tetracarbonyldimer; Di-m-carbonylhexacarbonyldicobalt;Dicobalt carbonyl (Co2(CO)8); Dicobalt octacarbonyl; Octacarbonyldicobalt

 

Dicobalt octacarbonyl Synthetic route

10210-68-1

dicobalt octacarbonyl

77217-45-9

1-methyl-1-(2-propynyl)-3,3,5,5-tetrachlorocyclotriphosph(PV)azene

88131-25-3

Co2(CO)6C2HCH2PCH3N3P2Cl4

Conditions
ConditionsYield
In hexane byproducts: CO; The mixt. was stirred for 30 min at 20-25°C (N2 atm.);; evapd., sublimed, chromd. on silica gel with hexane-CH2Cl2;;80%
10210-68-1

dicobalt octacarbonyl

77217-54-0

1-ethyl-1-(prop-1-ynyl)tetrachlorocyclotriphosphazene

88131-32-2

Co2(CO)6C2CH3PC2H5N3P2Cl4

Conditions
ConditionsYield
In hexane byproducts: CO; The mixt. was stirred for 30 min at 20-25°C (N2 atm.);; evapd., sublimed, chromd. on silica gel with hexane-CH2Cl2;;
10210-68-1

dicobalt octacarbonyl

77217-46-0

1-ethyl-1-(prop-2-ynyl)tetrachlorocyclotriphosphazene

88131-26-4

Co2(CO)6C2HCH2PC2H5N3P2Cl4

Conditions
ConditionsYield
In hexane byproducts: CO; The mixt. was stirred for 30 min at 20-25°C (N2 atm.);; evapd., sublimed, chromd. on silica gel with hexane-CH2Cl2;;
10210-68-1

dicobalt octacarbonyl

77217-57-3

1-isopropyl-1-(prop-1-ynyl)tetrachlorocyclotriphosphazene

88131-34-4

Co2(CO)6C2CH3PC3H7N3P2Cl4

Conditions
ConditionsYield
In hexane byproducts: CO; The mixt. was stirred for 30 min at 20-25°C (N2 atm.);; evapd., sublimed, chromd. on silica gel with hexane-CH2Cl2;;
10210-68-1

dicobalt octacarbonyl

77217-49-3

1-isopropyl-1-(prop-2-ynyl)tetrachlorocyclotriphosphazene

88131-27-5

Co2(CO)6C2HCH2PC3H7N3P2Cl4

Conditions
ConditionsYield
In hexane byproducts: CO; The mixt. was stirred for 30 min at 20-25°C (N2 atm.);; evapd., sublimed, chromd. on silica gel with hexane-CH2Cl2;;
10210-68-1

dicobalt octacarbonyl

77217-53-9

1-methyl-1-(prop-1-ynyl)tetrachlorocyclotriphosphazene

88131-31-1

Co2(CO)6C2CH3PCH3N3P2Cl4

Conditions
ConditionsYield
In hexane byproducts: CO; The mixt. was stirred for 30 min at 20-25°C (N2 atm.);; evapd., sublimed, chromd. on silica gel with hexane-CH2Cl2;;
10210-68-1

dicobalt octacarbonyl

77217-47-1

1-propyl-1-(prop-2-ynyl)tetrachlorocyclotriphosphazene

88156-67-6

Co2(CO)6C2HCH2PC3H7N3P2Cl4

Conditions
ConditionsYield
In hexane byproducts: CO; The mixt. was stirred for 30 min at 20-25°C (N2 atm.);; evapd., sublimed, chromd. on silica gel with hexane-CH2Cl2;;
10210-68-1

dicobalt octacarbonyl

77217-52-8

1-allyl-1-(prop-2-ynyl)tetrachlorocyclotriphosphazene

88131-30-0

Co2(CO)6C2HCH2PC3H5N3P2Cl4

Conditions
ConditionsYield
In hexane byproducts: CO; The mixt. was stirred for 30 min at 20-25°C (N2 atm.);; evapd., sublimed, chromd. on silica gel with hexane-CH2Cl2;;
10210-68-1

dicobalt octacarbonyl

77217-60-8

1-allyl-1-(prop-1-ynyl)tetrachlorocyclotriphosphazene

88131-37-7

Co2(CO)6C2CH3PC3H5N3P2Cl4

Conditions
ConditionsYield
In hexane byproducts: CO; The mixt. was stirred for 30 min at 20-25°C (N2 atm.);; evapd., sublimed, chromd. on silica gel with hexane-CH2Cl2;;
10210-68-1

dicobalt octacarbonyl

77217-55-1

1-propyl-1-(prop-1-ynyl)tetrachlorocyclotriphosphazene

88131-33-3

Co2(CO)6C2CH3PC3H7N3P2Cl4

Conditions
ConditionsYield
In hexane byproducts: CO; The mixt. was stirred for 30 min at 20-25°C (N2 atm.);; evapd., sublimed, chromd. on silica gel with hexane-CH2Cl2;;

Dicobalt octacarbonyl Chemical Properties

Molecular formula: Co2(CO)8
Molar mass: 341.95 g/mol
Appearance: red-orange crystals ( when pure )
Density: 1.87 g/cm3
Melting point: 51–52 °C
Boiling point: decomp. ca. 52 oC
Solubility in water : insoluble

Dicobalt octacarbonyl Uses

COBALT CARBONYL is used as a catalyst for hydroformylation, the conversion of alkenes to aldehydes.

Dicobalt octacarbonyl Consensus Reports

IARC Cancer Review: Group 2B IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 52 , 1991,p. 363.(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) ; Human Inadequate Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 52 , 1991,p. 363.(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) .

Dicobalt octacarbonyl Safety Profile

Questionable carcinogen. When heated to decomposition it emits toxic vapors .
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