Gargamel
Hazard to Others
Posts: 166
Registered: 9-3-2013
Member Is Offline
Mood: No Mood
|
|
Removing oil residues: ethanol vs. isopropanol
I'd just like to know what is the stronger solvent for oil:
Isopropanol or ethanol, lets assume both are 99%.
|
|
|
Ubya
International Hazard
Posts: 1247
Registered: 23-11-2017
Location: Rome-Italy
Member Is Offline
Mood: I'm a maddo scientisto!!!
|
|
ethanol is more polar, but now by very much, so in theory IPA should be better to remove oils
---------------------------------------------------------------------
feel free to correct my grammar, or any mistakes i make
---------------------------------------------------------------------
|
|
|
fusso
International Hazard
Posts: 1922
Registered: 23-6-2017
Location: 4 ∥ universes ahead of you
Member Is Offline
|
|
What oil? alkanes, alkenes and triglycerides are all different.
|
|
|
Gargamel
Hazard to Others
Posts: 166
Registered: 9-3-2013
Member Is Offline
Mood: No Mood
|
|
Hi,
well in this case it's some kind of mineral oil, petroleom kind of stuff.
|
|
|
Deathunter88
National Hazard
Posts: 519
Registered: 20-2-2015
Location: Beijing, China
Member Is Offline
Mood: No Mood
|
|
Neither will be your best choice, naphtha/xylene/toluene will give you much better results.
|
|
|
Gargamel
Hazard to Others
Posts: 166
Registered: 9-3-2013
Member Is Offline
Mood: No Mood
|
|
| Quote: |
Neither will be your best choice, naphtha/xylene/toluene will give you much better results. |
Also better results in destroying plastic and rubber parts.
No, the question here is really only isopropyl VS ethyl alcohol for mineral oils.
|
|
|
happyfooddance
National Hazard
Posts: 530
Registered: 9-11-2017
Location: Los Angeles, Ca.
Member Is Offline
Mood: No Mood
|
|
Quote: Originally posted by Gargamel  |
| Quote: |
Neither will be your best choice, naphtha/xylene/toluene will give you much better results. |
Also better results in destroying plastic and rubber parts.
No, the question here is really only isopropyl VS ethyl alcohol for mineral oils.
|
Do you not have access to IPA/etOH/and mineral oil to see for yourself?
Mineral oil is not well-defined so what mineral oil you have might not be the same as someone elses'.
|
|
|
Amos
International Hazard
Posts: 1406
Registered: 25-3-2014
Location: Yes
Member Is Offline
Mood: No
|
|
Call me crazy but it might not be a bad idea to douse the affected surfaces with a vegetable oil first and then remove excess vegetable oil with an
alcohol. Mineral oils aren't super soluble in either of the alcohols you mention, and even though they do have some sparing solubility, you'll find by
testing it yourself that they are very stubborn to dissolve.
|
|
|
SWIM
National Hazard
Posts: 970
Registered: 3-9-2017
Member Is Offline
|
|
If the alcohol doesn't do the trick, and you can access these parts well enough to scrub them a bit, you might want to consider dishwashing liquid.
The stuff people use at the sink, not the stuff they use in the dishwasher.
Here in the US it's stuff like Palmolive, or Dawn.
Just rub it into the oil without adding water and it will tend to emulsify the oil into a goop which cab then be rinsed off with water. It really does
cut oils and stubborn tars very well when applied undiluted.
I do this to get engine grease and motor oil off my hands without resorting to harsh chemicals. (Yeah, I know they have commercial mechanic's hand
cleaners, but I'm too cheap for that.)
|
|
|
Amos
International Hazard
Posts: 1406
Registered: 25-3-2014
Location: Yes
Member Is Offline
Mood: No
|
|
| Quote: Originally posted by SWIM |
If the alcohol doesn't do the trick, and you can access these parts well enough to scrub them a bit, you might want to consider dishwashing liquid.
The stuff people use at the sink, not the stuff they use in the dishwasher.
Here in the US it's stuff like Palmolive, or Dawn.
Just rub it into the oil without adding water and it will tend to emulsify the oil into a goop which cab then be rinsed off with water. It really does
cut oils and stubborn tars very well when applied undiluted.
I do this to get engine grease and motor oil off my hands without resorting to harsh chemicals. (Yeah, I know they have commercial mechanic's hand
cleaners, but I'm too cheap for that.) |
Honestly yes, I second this. No need to resort to "chemical" means.
|
|
|
TmNhRhMgBrSe
Hazard to Others
Posts: 112
Registered: 4-7-2019
Member Is Offline
|
|
Why not just use soap?
|
|
|
Gargamel
Hazard to Others
Posts: 166
Registered: 9-3-2013
Member Is Offline
Mood: No Mood
|
|
Well it's about hydraulic fluid in tubings that should be used for air afterwards. So the tubes should be - well, not absolutely oil free but dry...
At work I only have isopropanol or ethanol. So question is only which one is better, even if both suck
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
