Methylcyclopentadienyl maganese tricarbonyl

  • MMT
  • Tricarbonyl(methylcyclopentadienyl)manganese
Formula
C9H7MnO3
Structure
Description
An orange liquid with a pleasant odor.
Uses
Smoke abater additive for use in fuels.

Registry Numbers and Inventories.
CAS
12108-13-3
EC (EINECS/ELINCS)
235-166-5
RTECS
OP1450000
RTECS class
Organometallic; Primary Irritant
UN (DOT)
2810
Merck
12,6307
Beilstein/Gmelin
NA
Swiss Giftliste 1
G-9510
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C9H7MnO3
Formula mass
218.09
Melting point, °C
1.1
Boiling point, °C
233
Vapor pressure, mmHg
0.05
Density
1.39 g/cm3 (20 C)
Solubility in water
Insoluble
Viscosity
5.0 cp @ 20C
Partition coefficient, pKow
3.7

Hazards and Protection.
Storage
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Attempt to stop leak if without undue personnel hazard. Apply water spray or mist to knock down vapors. Land spill: Dig a pit, pond, lagoon, holding area to contain liquid or solid material. Dike surface flow using soil, sand bags, foamed polyurethane, or foamed concrete. Absorb bulk liquid with fly ash, cement powder, or commercial sorbents. Water spill: Use natural barriers or oil spill control booms to limit spill travel. Remove trapped material with suction hoses.
Stability
No data.
Incompatibilities
Avoid contact with light (decomposes).
Decomposition
Decomposes rapidly in sunlight.

Fire.
Flash Point,°C
96
Fire fighting
Extinguish with water, dry chemicals, foam, or carbon dioxide. Wear goggles and self-contained breathing apparatus.
Fire potential
Combustible material: may burn but does not ignite readily.
Hazards
When heated to decomposition, this compound emits toxic fumes of carbon monoxide.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
3
 
Flammability
0
 
 
Reactivity
0
 

Health.
Exposure limit(s)
TLV (as Mn): ppm; 0.2 mg/m3 (skin) (ACGIH 1994-1995). OSHA PEL: C 5 mg/m3 NIOSH REL: TWA 0.2 mg/m3 skin
Poison_Class
2
Exposure effects
Headache and giddiness were noted in one human dermal exposure. Experimental animals have developed excitement, hyperactivity, muscle spasms, tremors, seizures, and coma after lethal doses.
   Ingestion
Nausea has occurred in humans. Anorexia and weight loss occurred after both acute and chronic exposures in experimental animals.
   Inhalation
Experimental animals exposed to lethal doses develop slow and labored respiration. Chronic inhalation produced chronic bronchitis, lung abscesses, and interstitial pneumonia.
   Skin
Mmt is readily absorbed through intact skin when dissolved in petroleum distillates. It is not irritating on single skin contact and is not known to be a skin sensitizing agent. Mmt induced mild skin irritation in the rabbit in the standard draize test.
   Eyes
MMT is a moderate eye irritant.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method 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. Administer oxygen if breathing is difficult.
   Skin
Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists.
   Eyes
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.

Transport.
UN number
2810
Response guide
Hazard class
6.1
Packing Group
I; II; III
 
USCG CHRIS Code
MCT
 
Std. Transport #
4921578
 
IMO Chemical Code
17
IMO Pollution Category
A
IMO Hazard code
S/P