Shandong Dongchang Fine Chemical Technology Co., Ltd.

Gasoline antiknock

• Category :

  Catalyst and Auxiliary

• Synonyms :

  Methylcyclopentadienyl manganese tricarbonyl;(1-Methyl-2,4-cyclopentadien-1-yl)manganese tricarbonyl;(eta5-Methylcyclopentadienyl) manganese tricarbonyl-;(methylcyclopentadienyl)manganesetricarbonyl[qr];(methylcyclopentadienyl)tricarbonyl-manganes;(Methylcyclopentadienyl)tricarbonylmanganese;(methylcyclopentadienyl)tricarbonylmanganese[qr];2-methylcyclopentadienyl;2-methylcyclopentadienylmanganesetricarbonyl[qr];Gasoline antiknock;carbon monoxide;manganese;5-methylcyclopenta-1,3-diene;carbon monoxide, manganese, methylcyclopentane;Methylcyclopentadienylmanganes Tricarbonyl;MMT;

• CAS NO :

  12108-13-3

• EC NO :

  235-166-5

• Molecular Formula :

  C₉H₇MnO₃

• Molecular Weight :

  218.0881

• Main Specifications :

• InChI :

  InChI=1/C6H7.3CO.Mn/c1-6-4-2-3-5-6;3*1-2;/h2-5H,1H3;;;;

• Product description :

  KT9262 & KT9298

     Dongchang MMT, a compound with gasoline antiknock properties, was developed to effectively enhance the gasoline octane number and greatly reduce the harmful discharge amount of automobile exhaust emissions such as NOx, CO, and HC. 
   Note: MMT means the compounding of first letters of three words in English, that is, Methylcyclopentadienyl Manganese Tricarbonyl. MMT neither represents brands, nor comprehends other significations.
  1.Physio-chemical Property
      Dongchang MMT is mainly divided into two types, i.e. KT9298 and KT9262. They bring different properties (i.e. freezing point& Manganese content) for different using circumstances as the below table shows.

  Physio-chemical Properties

  Item	Unit	Specifications
  		KT9298	KT9262
  Appearance		Orange liquid	Orange liquid
  Manganese content(20℃)	Weight,%	≥24.4	≥15.1
  Density(20℃)	g/cm3(20℃)	1.36～1.39	1.10～1.30
  Freezing  point (initial)	℃	≤-1	≤-25
  Flash point of closed entry	℃(20℃)	≥80	≥50

  2.Chemical Structures
      Formula: C₉H₇O₃Mn
      The formula shows that Dongchang MMT is an organometallic compound with one (1) central manganese coordinated among one methylcyclopentadienyl group and three (3) carbon monoxide groups.

  3.Mechanism
     Dongchang MMT is decomposed to form active manganese oxides under combustion process. Its surface reaction results in declining peroxide concentration which have already established in the engine combustion chamber at the front of flame and selectively cuts off some free-radical chain reaction. Therefore, it inhibits the automated ignition and slows the velocity of the energy release so as to enhance its antiknock capability.
  4.Receptivity to various hydrocarbons
   The receptivity of Dongchang MMT to various hydrocarbons is shown as follows：
  ● Paraffins > Olefins > Aromatics (i.e, straight-run gasoline > catalytic gasoline > reformed gasoline)
  ● Low octane number fuel > High octane number fuel
  ● Research method (RON) > Motor method (MON)
  5.Advantages
     Dongchang MMT has good matching capability with MTBE and ethanol to enhance the gasoline octane number. Second, Dongchang MMT solves the trouble of insufficient vehicle dynamic power due to overloading MTBE. Third, the catalytic converter of automobile tail gas is effectively improved by Dongchang MMT during its combustion process. Finally, it helps to improve the refining operation, enhance the flexibility of blending operation, and reducing the difficulty in reforming process.
  Handling instructions
  1. Packaging
  Dongchang MMT is packed by galvanized iron drums, IBC drums, or ISO tanks.
  2. Transportation
  Shipping Name (IMO): 6.1.UN3281, PG II, MARINE POLLUTANT.
  3. Storage
  ● Keep containers in a cool, dry and well-ventilated place, and keep them away from heat/sparks/open flames/hot surfaces.
  Handling & blending temperature: -25℃ -50℃
  Shelf life: 12 months
  ● keep containers tightly closed and store it with inert gas (i.e. nitrogen) if it is not used;
  ● As Dongchang MMT is light sensitive to be decomposed if it is exposed to sunshine, its samples or its gasoline samples shall be kept in brown container.
  ● Dongchang MMT shall not be directly contacted with eye and skin, or inhaled and ingested because it belongs to toxic category.
  As for more details about MSDS for Dongchang MMT, please do not hesitate to let us know.

• Molecular Structure :