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.
NFPA 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 153
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