SweetSue's Cannabis Oil Study Hall

SweetSue;3832436 said:

At freepatentsonline.com I found a reprint of the work I believe was done by GWPharmaceuticals on decarb. This appears to be the closest thing to authority out there. Everything's years old. It'll be nice when we have current testing results.

Therefore laboratory studies demonstrate the optimum conditions for the decarboxylation of:

Chemovar producing primarily CBD is 1 hour at 120° C. or 0.5 hour at 140° C.

Chemovar producing primarily THC to minimise CBN formation, is 1 to 2 hours at 105° C. or 1 hour at 120° C.

Thin layer chromatography reveals that virtually all of the THCA has disappeared after 4 hours at 105° C. and after 1 hour at 120° C. No THCA is visible at any time point when the herb is heated at 140° C. A small amount of residual staining at this retention value on TLC and the presence at low levels of a peak coincident with THCA on HPLC analysis may indicate the presence of a minor cannabinoid rather than residual THCA.

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