• Neuroscience & Pharmacology Discussion Welcome Guest
    Posting Rules Bluelight Rules
    Recent Journal Articles Chemistry Mega-Thread
    FREE Chemistry Databases! Self-Education Guide

  • N&PD Moderators: Skorpio

rose oil and salt extraction

panic in paradise

panic in paradise

Bluelighter
Joined
May 3, 2000
Messages
18,854
Location
by the dawns early light
so yes, i believe in aroma therapy, because i know that certain plants can cause physical, and mental changes to us by being introduced into our bodies.

that is my justification for creating this thread here.

my question is, simple, i have several mason jars that have been stored for several years - each contains rose petals, sea salt rocks, and now rose oil.

i want every drop of that oil, and in its purist form. i could crudely dump it into something to be strained, but the salts are saturated in oil as well, i presume oil not some impurity(water).

i need to do this right, i could guess around and have some product, but, why not ask a pro or a good know it all...?
 
For essential oil extraction, you need to do it using steam distillation. This gets the stuff to vapourize at a lower temp (something to do with combined vapour pressures of otto of rose - or whatever oil - and water). If you want details of what's needed, look up steam distillation of aniline (phenylamine/aminobenzene)
 
well, i mean the oil is already present, the 3 jars have been sitting 4 years already, and there is about 1 tbsp of oil visible per jar(maybe 12 oz jars) - the rest is rock salt and rose petals.

i could drip it from the jar, but there must be a better way of moderate difficulty to rid of the salt, and leave only the oil.

i have heard it takes 250lbs of petals to make 4tbsp of rose otto atar. but i want this oil here.
 
Read the book "Perfume", or watch the movie. Distillation is you're best bet for separating the oil from the contaminants. It's not too difficult, and you'll end up with some awesome essential oils. *Try lavender next if you're interested in the effects scents can have on the human brain
 
fastandbulbous said:
I'm trying to get together enough fresh catnip to steam distill it's essential oil. How to get cats to take to their new bedding in under a minute!
Click to expand...

That's gotta be the funniest shit i've heard all month! PS: Perfume is a really good read, and the movie actually does it justice. Seriously, go check it out at Blockbuster!
 
no no no catnip oil here.

i can not even imagine the fury and bizaro primal instincts that would over come my cat if she got a whiff of that stuff! she goes nuts if dried out leafs are any where near.

but, i dont think i am explaining this right.

the oil is already made, my next step is to make all that salt disapear. what liquid if any, would dissolve and evaporate it, leaving only the oil.

heres a pic -

 
Pour water in there, shake it up really really hard, pour this into a plastic bag. Let the plastic bag sit pinned to your wall for a while. Two layers will separate. The salt will be in the water layer. Keep the oil layer, discard the water layer.
 
You've seen DXM extractions right? It's similar to that kind of thing. You are basically separating two layers.
 
Rose oil, unlike rose absolute, has a relatively low phenylethanol content. Rose oil (from Rosa X Damascena) is predominately (-) -citonellol, geraniol and nerol. In contrast, rose absolute (made from the concrete preparation of blossoms) contains significantly more phenylethanol. Smaller fractions found in steam distill rose oil include important terpenes such as beta Damascenone and rose oxide (Tetrahydro-4-methyl-2-(2-methylpropen-1-yl)pyran) which add much to the overall scent. Rose oil is a partly crystallised yellow liquid with an odour containing distinctive elements of roses, tea and honey.

As mentioned, rose oil is normally prepared via steam distillation. Some phenylethanol and other components will be lost in the water if this is not redistilled (Merck lists phenylethanol as slightly soluble in water (2ml in 100ml with shaking).

If only a little water is present in the rose oil/ salt mixture, I would use a minimal amount of cold ethanol and extract the oil. Sodium Chloride is only very slightly soluble in ethanol. If you use the bag method a sep funnel, remember, some of the more water soluble compounds will be lost, and this may in turn affect the odour. An alternative would be to steam distill your oil/salt/ water mixture and redistill under vacuum to reclaim any oil lost in the water.
 
Would a hexane extraction work? I'm not really knowledgable on this subject, ut I though oils from plant material can be easily extracted with hexane... I wonder if that stuff is hard to get, it would be great for BHO (HHO) extractions too I would imagine.
 
I'm pretty sure the original poster wouldn't be able to do volatile gas extractions......
 
You must log in or register to reply here.
Top