How can I tell if plastic storage containers are made from polyhydrocarbon plastic?
Or better yet, do you guys know of any that aren't made of polyhydrocarbon?
I'm trying to store some MEKP for a short while, and can't find anything suitable for short time storage.not_important - 25-6-2007 at 18:10
polyhydrocarbon? Do you mean polyolefin? Polystyrene is also a polyhydrocarbon, as it contains only C and H.12AX7 - 25-6-2007 at 18:45
If you mean polyethylene, milk jugs are HDPE, as labeled. Many household products are HDPE, LDPE, polypropylene, polystyrene or PET (a polyester).
TimJohnWW - 25-6-2007 at 21:36
Polyethylene degrades in no time on exposure to the UV light in direct sunlight, unless it is filled with a black pigment.flashpoint - 26-6-2007 at 05:18
No, I mean Polyhydrocarbon, such as polyisobutylene, etc.
Have you ever put acetone on a piece of PVC piping? It softens it and melts it.
Thus why I wouldn't want to put any MEKP or wet ap into a polyhydrocarbon plastic.
[Edited on by flashpoint]not_important - 26-6-2007 at 08:37
Quote:
Originally posted by flashpoint
No, I mean Polyhydrocarbon, such as polyisobutylene, etc.
...
[Edited on by flashpoint]
which however doesn't mention http://en.wikipedia.org/wiki/Butyl_rubber which is also a polyolefin, which because of the methyls sticking out form a soft rubbery material.
PVC is properly not a "Polyhydrocarbon" because of the chlorines, nor is nylon, PET and other polyesters, polycarbonate, acrylics, polysulfonones,
silicones, and so on.
About the only place the term "Polyhydrocarbon" shows up in regards to plastics is on patents and occasionally research papers. It is not commonly
used in the English speaking world as a term for plastics because it is too general, as I already said it covers the polyolefins/polyalkenes,
polystyrene, and several other uncommon plastics containing only carbon and hydrogen; it is just not a specific term.
If you mean "hydrocarbon" in the most general terms, ie 'organic', then almost all plastics are organic.
So, using terms common in the plastics industry, what is it you are after?flashpoint - 26-6-2007 at 15:56
I'm not sure now what I need.
I read throughout the posts I've read on MEKP not to store it in a polyhydrocarbon...so I'm guessing in any Poly's?
If you know how acetone softens/melts some plastics, but not others...this is why I suspect that it not be used to store MEKP, as it does the same to
plastics.unionised - 26-6-2007 at 23:54
IIRC MEKP is usually stored as a mixture with something else for stabillity reasons. On of the things they use is dibutyl phthalate which is also used
as a plasticiser for PVC so I doubt that PVC would be suitable.
Have you tried searching for compatibility data for MEKP? Anyway, polypropylene, polyethylene, or PTFE are the most commonly used materials for
storing the stuff.
Oh, and BTW "Polyethylene degrades in no time on exposure to the UV light in direct sunlight, unless it is filled with a black pigment." is only going
to matter if you store ypour MEKP in direct sunlight and I really wouldn't advise doing that.cool_arrow - 27-6-2007 at 04:11
so why is a glass container not suitable?sparkgap - 27-6-2007 at 08:12
^ as has oft been repeated, glass shrapnel is a terrible complication to have when your AP or MEKP suddenly decides not to play nice just because it
feels like it.
