Solvent residuals in vape concentrates, odor detectability and toxicity levels

My thoughts on the odor detectability and toxicity levels of residual butane in a dab are found in this ICMAG thread entitled, “At what ppm can you taste butane?”

The odor detection tables, and FDA Q3C residual standards, along with my dilution factor calculation can also be used to determine theoretically the levels for other solvents.

The odor detection tables Gray Wolf provided are the best available at this time.

The FDA Q3C residual standards for toxicity are the USA standard at this time.

A dilution factor calculation is necessary because the residuals only come into contact with the body post vaporization.

A sample of my presentation (post #13,)

"At sea level and at 15°C air has a density of approximately 1.225 kg/m3

One cubic meter equals 1000 liters

The average total lung capacity of an adult human male is about 6 litres of air.
(For convenience and to be conservative I’ll be assuming in my calculation only a single liter of dilution.)

A residual level of 5,000 ppm is .005 of a gram of butane in a gram of BHO. A tenth of a gram dab would contain .0005 of a gram of butane.
(decimal point > tenths > hundredths > thousandths > ten-thousandths > hundred- thousandths > millionths)

Conversion of kilograms of air to grams: 1.225kg x 1,000g/kg = 1,225g

Weight of a cubic meter of air factored to the weight of a single liter: 1,225g/m3 x m3/1,000L = 1.225g/L

Weight of a liter of air and a tenth of a gram dab: 1.225g + .1g = 1.325g

Butane residue proportion: .0005g/1.325g = .000377 = 377 ppm

A tenth of a gram dab containing a butane residue of 5,000 ppm presents only several hundred ppm of butane when consumed as intended.

The table GW provided indicates an odor threshold of 1,200 ppm for butane.


No odor, no toxicity."

Enjoy the spiced pecans!! (post #41)


Thank you for that IC mag post a lot of bro science Posters Mixing emotions And opinions with false facts

Generally speaking the nose will detect toxic fume LONG before damaging exposure takes place. As a rule of thumb any sort of chemical that is capable of harming humans but without being detected is either banned, tightly controlled, or altered to become detectable. Case in point is propane in which the gas has additives to allows us to detect it.

What happens if exposed to toxic fume is nearly out of a persons control in terms of the gag response. The body will recoil at toxic levels and it cannot be stopped very easy. As a young Marine I was required yearly to undergo gas mask training. This meant donning the mask, walking into a hut filled with CS mil grade tear gas, removing the mask after the door closed and then ordered to do jumping jacks. With training and in such an extreme example it is possible to maintain body control which is the point to learn how to then don and clear the mask. Fun is not associated with this excersize.

When you speak of residuals I assume that to mean a fraction of the medicine. Irregardless of how huge a dab you can gulp down the reality is we are talking micro grams and in the same sentence speaking toward toxic exposure? If jumping jacks inside a quonset hut exposed to mil grade CS gas is tolerated by human lungs (although I must say it is among the most unpleasent thing in life I know) then it is impossible for me to believe a trace of anything in my extract is really going to harm me.

All generations have different attitudes about things and when I was shoiwng vids on youtube the demographics told me the age of the viewers. The other site you mentioned viewer age was 17-25 and from my viewpoint as an older gen it just seems to me the younger crowd is gripped with fear over just about everything.

Try hitting a bong with a zippo lighter lolz if you want to test the idea of residual solvents hehe. Those of us who grew up with zippo lighters get a giggle watching the young folk fret about a few micro grams of butane hehe.