c****u
发帖数: 584 | 1
Petroleum Ether. I am not sure of the spelling. That is nothing but
mixture of hydrocarbon. They are labeled by boing points.
I will never try to put them in my mouth.//hehe |
c****u
发帖数: 584 | 2
1st: Most of them are not "clean" enough, they may have some poisonus
impurity, I don't know if there are some kinds using for food product.
2nd: Even they are clean, they are mixture of decane, dodecane...I am not
sure, they are not good for health, although not poisonous. At least they
will dissolve the fat. However they are easy to be evaporated.
you can check the CRC safty handbook about petroleum ether. |
c****u
发帖数: 584 | 3
I think so.
You can try it. I remember we use cyclohexane or absolute alcohol to
dissolve the fat for bio sample using for TEM. |
j**i
发帖数: 419 | 4
a little bit,not very.
more expensive than petroleum ether(shi You mi)
-mixed alkanes from SHI YOU
,but still not expensive bah.
you can find its industry price.
I am not very clear here.
if in china ,I know how to search.:)
【在 c****u 的大作中提到】
:
: I think so.
: You can try it. I remember we use cyclohexane or absolute alcohol to
: dissolve the fat for bio sample using for TEM.
|
j**i
发帖数: 419 | 5 in china,there are three kinds of petroleum ether:
30-60 OC
60-90
90-120
their boiling point is not the same lah.
But as we know they are mixtures so they are not pure.
Generally when we use it we need to distill it.
They may contaim some aromatic compounds such as benzene etc.
Generally they are very easy to evaprate especially the first two kings.
sometimes people prefer the hexane or cyclohexane for these two solvents have
similiar characters as PE but they are more pure.
Alcohol is more pola
【在 c****u 的大作中提到】
:
: I think so.
: You can try it. I remember we use cyclohexane or absolute alcohol to
: dissolve the fat for bio sample using for TEM.
|
