MANGANESE CARBONYL Property

Melting point:

154 °C(lit.)

Boiling point:

80°C/1mm

Density 

1.75

Flash point:

80°C/1mm subl.

storage temp. 

2-8°C

solubility 

Chloroform (Slightly), Methanol (Slightly)

form 

crystal

color 

yellow

Water Solubility 

Soluble in organic solvents. Insoluble in water

Sensitive 

Air Sensitive

Merck 

14,5727

Exposure limits

ACGIH: TWA 0.02 mg/m3; TWA 0.1 mg/m3
OSHA: Ceiling 5 mg/m3
NIOSH: IDLH 500 mg/m3; TWA 1 mg/m3; STEL 3 mg/m3

Stability:

Air Sensitive

CAS DataBase Reference

10170-69-1

EPA Substance Registry System

Manganese, decacarbonyldi-, (Mn-Mn) (10170-69-1)

Safety

Hazard Codes 

T

Risk Statements 

23/24/25

Safety Statements 

22-26-36/37/39-45

RIDADR 

UN 3288 6.1/PG 2

WGK Germany 

3

F 

1-10

TSCA 

Yes

HazardClass 

6.1

PackingGroup 

II

HS Code 

29319090

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H331Toxic if inhaled

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P271Use only outdoors or in a well-ventilated area.

P403+P233Store in a well-ventilated place. Keep container tightly closed.

P405Store locked up.

P501Dispose of contents/container to..…

MANGANESE CARBONYL Chemical Properties,Usage,Production

Chemical Properties

yellow crystalline powder

Uses

It is used as a catalyst and a fuel additive toincrease octane number.

Uses

MANGANESE CARBONYL can be used as Catalyst; antiknock additive.

Hazard

Toxic material.

Health Hazard

Toxicity data are not available for this compound.Chronic exposure to its dusts has thepotential to produce damaging effects on thepulmonary system and the central nervous system.Skin or eye contact can cause irritation.When heated, it emits toxic carbon monoxide.

Fire Hazard

There is no report of any fire or explosion hazard. However, on the basis of its structure and analogy with dirhenium decacarbonyl, it may be anticipated to ignite when heated above 150°C (302°F). The fine powder is susceptible to produce pyrophoric tetramer.

Purification Methods

Golden yellow crystals which in the absence of CO begin to decompose at 110o, and on further heating yield a metallic mirror. In the presence of 3000psi of CO it does not decompose on heating to 250o. It is soluble in common organic solvents, insoluble in H2O, not very stable in air, to heat or UV light. It dissolves in a lot of *C6H6 and can be crystallised from it. It distils with steam at 92-100o. It can be purified by sublimation under reduced pressure (<0.5mm) at room temperature to give well-formed golden yellow crystals. If the sample is orange coloured, this sublimation leads to a mixture of golden-yellow and dark red crystals of the carbonyl and carbonyl iodide, respectively, which can be separated by hand picking under a microscope. Separation followed by resublimations provides the pure compounds. POISONOUS. [Brimm et al. J Am Chem Soc 76 3831 1954, Closson et al. J Am Chem Soc 80 6167 1958, 82 1325 1960.]