Paul, PET will work for methoxide. It is a more brittle plastic than HDPE so I would not perpetually rely on the same bottle batch in and batch out.
Also, mixing methoxide in a bottle or jug that can be sealed is not advisable, as the tendency is for the operator to seal the jug and shake until the catalyst dissolves. This is extremely dangerous. The dissolution of catalyst into alcohol generates heat and pressure in a sealed container. Vigorous shaking of the mixture further increases this pressure. Presuming the container does not split or the cap pop, the pressure will have to be relased manually. This can create a thin mist that can get on hands and surfaces. As well, after initially releasing pressure, there may still be some undisolved catalyst remaining in the jug. The temptation is to continue shaking the bottle after the pressure is released. Unfortunately, it is quite possible that the operator might get distracted and fail to retighten the cap before shaking, causing distribution of methoxide into the surrounding area. I've seen some of the most careful people make this mistake. Fortunately there was no human toll as a result. If the choice is made to prepare methoxide in such a manner, a swirling motion is far safer than wild agitation of a supposedly sealed jug. Todd Swearingen ----- Original Message ----- From: Paul Gobert To: biofuel@yahoogroups.com Sent: Monday, April 08, 2002 7:06 PM Subject: Re: [biofuel] Plastic Types ----- Original Message ----- From: "Christian" <[EMAIL PROTECTED]> > Does anyone know if: > > PC (polycarbonate), > PP (polypropylene), or > PET (polyethylene therfthalate -plastic coke bottles-) > are suitable for the methoxide mix? (snip) Have mixed BD in PET bottles but not shure how they cope with methoxide. Have mixed methoxide in domestic plastic buckets, white translucent plastic 20L bins and pyrex glass ware all without problems. Some basic information on plastics identification and recycling. http://www.wollongong.nsw.gov.au/docum More detailed Information at Mid Michigan branch of Society of plastic Engineers. Some great teaching resources here. http://www.midmichiganspe.org/education/identification.pdf here is one for kieth with no pdf. http://packaging.hp.com/evsec06.htm That could be /eusec06.htm Never did learn to read my own writing. Info on other packaging material at that last site too. Regards, Paul Gobert. Yahoo! Groups Sponsor ADVERTISEMENT Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Please do NOT send "unsubscribe" messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. [Non-text portions of this message have been removed] ------------------------ Yahoo! Groups Sponsor ---------------------~--> Buy Stock for $4 and no minimums. FREE Money 2002. http://us.click.yahoo.com/k6cvND/n97DAA/ySSFAA/FGYolB/TM ---------------------------------------------------------------------~-> Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Please do NOT send "unsubscribe" messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
