borsht
All-Star Author
Oakland
Posts:812
Points:193,615
Joined:Aug 2012
|
Message Posted: Dec 6, 2012 12:53:02 AM
Methylcyclopentadienyl manganese tricarbonyl (MMT or MCMT) is an organomanganese compound with the formula (CH3C5H4)Mn(CO)3. Marketed as a supplement to the gasoline additive tetraethyl lead to increase a fuel's octane rating, MMT was later used in unleaded gasoline. Following the implementation of the Clean Air Act (United States) (CAA) in 1970, MMT continued to be used alongside TEL in the US during the phase-out of leaded gasoline (prior to TEL being finally banned from US gasoline in 1995) and was also used in unleaded gasoline until 1977. Ethyl Corporation obtained a waiver from EPA in 1995. The waiver allows the use of MMT in US unleaded gasoline (not including reformulated gasoline) at a treat rate equivalent to 8.3 mg Mn/l.[1]
MMT has been used in Canadian gasoline since 1976 at a concentration up to 18 mg Mn/l (though the importation and interprovincial trade of gasoline containing MMT was restricted briefly during the period 1997-1998)[2][3] and was introduced into Australia in 2000. It is sold under the tradename HiTEC® 3000.[4] It was also marketed as Ecotane by T2 Labs.[5]
|
JediKnight
Champion Author
Wisconsin
Posts:4,848
Points:2,034,735
Joined:May 2004
|
Message Posted: Dec 5, 2012 11:30:22 PM
Not to pile on top of oilpan4...
But oilpan4 might have thought/confused MMT and MTBE which was used as an Oxygenate but was largely discontinued/limited as concerns over Ground Water Contamination was raised. Although to be fair... Gasoline ain't exactly Water Friendly either.
|
BluestarCK
Rookie Author
Vancouver
Posts:4
Points:11,830
Joined:Aug 2012
|
Message Posted: Nov 10, 2012 12:49:25 PM
Thanks guys, appreciate all the info.
Cheers
CK
|
oilpan4
Champion Author
Virginia
Posts:12,062
Points:306,900
Joined:Jul 2006
|
Message Posted: Nov 8, 2012 9:35:33 PM
RFG = Reduced Fueleconomy Guaranteed
|
rumbleseat
Champion Author
Winnipeg
Posts:22,942
Points:3,532,320
Joined:Oct 2002
|
Message Posted: Nov 8, 2012 8:25:48 AM
RFG - Reformulated Gasoline, blended to burn more cleanly. It reduces the pollutants that form smog and the toxicity of the air we breathe.
RFG was mandated by Congress in the 1990 Clean Air Act amendments. The first phase of the program began in 1995 and the second, and current, phase beegan in 2000.
RFG is required in US cities with high smog levels and is optional elsewhere.
|
BluestarCK
Rookie Author
Vancouver
Posts:4
Points:11,830
Joined:Aug 2012
|
Message Posted: Nov 7, 2012 9:22:26 PM
Just curious what is RFG?
|
rumbleseat
Champion Author
Winnipeg
Posts:22,942
Points:3,532,320
Joined:Oct 2002
|
Message Posted: Nov 7, 2012 7:10:34 PM
ah, no oilpanan, MMT is still used in the US. As in Canada, the only fuels guaranteed to have no MMT or other metallics are the top tier fuels. It is currently manufactured for the US market by the Afton Chemical Corporation and the EPA allows the use of MMT in US unleaded gasoline at a treat rate equivalent to 8.3 mg Mn/l.
RFG apparently doesn't contain MMT, about 30% of the gasoline sold in the US is reformulated, according to the EPA.
|
oilpan4
Champion Author
Virginia
Posts:12,062
Points:306,900
Joined:Jul 2006
|
Message Posted: Nov 7, 2012 6:13:26 PM
I am pretty sure the U.S. went away from MMT about the time we went to RFG.
If I remember right MMT is a pretty nasty ground water contaminant and that was one of the reasons for going away from it.
|
Banjoe
Champion Author
Winnipeg
Posts:4,279
Points:617,270
Joined:Apr 2011
|
Message Posted: Nov 5, 2012 5:35:23 PM
Thomas Midgley, Jr. should figure in here somewhere.
|
BluestarCK
Rookie Author
Vancouver
Posts:4
Points:11,830
Joined:Aug 2012
|
Message Posted: Nov 4, 2012 8:56:48 PM
Thank you for the information, very informative. Do you know what the standing is with the Canadian government now? Curious if anything has changed.
Cheers
CK
|
rumbleseat
Champion Author
Winnipeg
Posts:22,942
Points:3,532,320
Joined:Oct 2002
|
Message Posted: Nov 4, 2012 8:22:43 PM
MMT is approved for use in both Canada and the US, and now Australia as well.
Known top tier gasoline brands in Canada are Esso, Chevron, Petro-Can, and Shell.
Yes, one of the requirements to meet top tier standards, and keep the certification, is to have no metallic additives.
Just because a station isn't branded one of the above 4, doesn't mean it is supplied with fuel containing MMT.
|
SilverStreaker
Champion Author
Twin Cities
Posts:11,952
Points:2,219,425
Joined:Mar 2006
|
Message Posted: Nov 4, 2012 7:14:42 PM
BluestarCK, welcome to GasBuddys! You will be able to post links after you graduate from rookie status. Until then, just copy and paste the link into your message.
In found an interesting article by the Canadian Environmental Law Association How Canada Became a Shill for Ethyl Corp
|