Primarily because running the THCA through a gas chromotograph is a heat process that decarboxylates the sample.
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Lab Testing on concentrates
- Thread starter TickleMyBalls
- Start date
Primarily because running the THCA through a gas chromotograph is a heat process that decarboxylates the sample.
gc's just are not giving correct readings either due to retention times or something.
There was an issue here lately with some high cbd oils. The gc's are only recording about half of the actual thc-a number.
If they are testing for terpinoids and the like too, decarboxilated oils should be high in Phenol
There was an issue here lately with some high cbd oils. The gc's are only recording about half of the actual thc-a number.
If they are testing for terpinoids and the like too, decarboxilated oils should be high in Phenol
vertigo0007
Member
dCarboxyL8
New member
Enough to know its limitations
vertigo0007
Member
..
to be honest, as hamma pointed out, if your dispensary cant discern whether or not their are mercaps in their oil, you probably dont want to buy....anything from them...
gotta have that lab tested bullshit tho dont we? just dont feel good about myself unless there is a big ORGANIC stamped across the top. just as long as someone else is telling me its safe, its ok. lol.
anyone else find it laughable how these labs come under the guise of "safety", but end up being a marketing tool?
vertigo0007
Member
..
Sour Deez
Member
I have a question about that chart with terps boiling points, for example,
d-limonene
Boiling point: 177*C / 350.6 degree Fahrenheit
This is what gives cannabis its lemony fragrance right? I was told when making bho with lemony strains to keep the purge temp low or else i might lose that lemony fragrance since limonene is one of the first terps to boil away. 350F seems kind of high?
d-limonene
Boiling point: 177*C / 350.6 degree Fahrenheit
This is what gives cannabis its lemony fragrance right? I was told when making bho with lemony strains to keep the purge temp low or else i might lose that lemony fragrance since limonene is one of the first terps to boil away. 350F seems kind of high?
I was curious about that to, recently I was running alot of jack herer flowers, very lemony and any temps above 135F seemed to loose alot of its lemony smell and taste.
Physical state and appearance: Liquid.
Odor: Citrus
Taste: Citrus
Molecular Weight: 136.23 g/mole
Color: Clear. almost Colorless.
pH (1% soln/water): Not applicable.
Boiling Point: 175°C (347°F) - 176 C
Melting Point: -40°C (-40°F)
Critical Temperature: Not available.
Specific Gravity: 0.8402 (Water = 1)
Vapor Pressure: 0.2 kPa (@ 20°C)
Vapor Density: 4.7 (Air = 1)
Volatility: Not available.
Odor Threshold: Not available.
Water/Oil Dist. Coeff.: Not available.
Ionicity (in Water): Not available.
Dispersion Properties: See solubility in water, diethyl ether.
Volatile aromatic compounds regularly cast of molecules below their boiling points, which is why they are aromatic. It is their molecules colliding withour noses that creates the smell.
i think there are a few lemony terpenes as well, not just the one.
The amount in the material is probably very small already, and for comparison, the seemingly low vapor pressure of ice at 0C is three times higher.
There's no reason why you can't add limonene if you want more.
Yeah, I was worried by that vapor pressure too, so I did more research and note that D Limonene actually only has the faint odor of orange, while its chiral pair L Limonene smells of evergreen. D Limonene isn't all that aromatic.
To see what else was present in citrus, I looked up orange oil ( citrus sinensis) in The Chemistry of Essential Oils, and discovered that in addition to D Limonene, it contains over 150 identified constitutes and Stewart estimated over 200 go. So far they have identified 36 different terpenoids, 34 alcohols, 30 esters, 20 aldehydes, 14 ketones, 10 carboxylic acids.
I could find so such indepth study on cannabis, but will dig further.
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D limonene smells very strongly like orange peel. I just picked up a gallon for a different project of mine, and I've been working with it all day. I've washed my hands a few times, but they still smell like I just peeled an orange.
Does anyone know if this changes the high at all? An earlier post mentioned something about it being a cannabinoid receptor agonist. I was thinking of adding a drop to a bud and vaporizing.
After further research, it appears my d-limonene is extracted from orange oil and is about 98.5% pure. The strong orange smell and flavor might be affected by some other orange oil component in the other 1.5%.
I don't think it has any psychoactive effects, but this bowl had a major creeper effect. 20 minutes later and blammo, it's all over. I don't remember this bud having this effect before. At the same time, I don't remember this bud not having it. I forgot where I was going with this.
I don't think it has any psychoactive effects, but this bowl had a major creeper effect. 20 minutes later and blammo, it's all over. I don't remember this bud having this effect before. At the same time, I don't remember this bud not having it. I forgot where I was going with this.
How would one adjust these numbers for various amounts of vacuum?
A nomograph may or may not be accurate, the more vacuum the less accuracy. Caryophyllene's number already has been adjusted - that's the recorded b.p. at 29.5" vacuum, 9.7 torr in the Merck Index. Apigenin's m.p. is 345-350°, and quercetin's m.p. is 316.5°. The values given for cannflavin A and for beta-sitosterol are their m.p.'s.
