What dab temperature preserves THC best?
Set your dab between 315°F and 400°F (157°C to 204°C). THC vaporizes at about 315°F, so a cooler nail leaves active cannabinoids sitting in the banger as a puddle. Push past 450°F and THC starts breaking down into CBN while harsh irritants form.
That range protects three things at once: full THC vaporization, terpene survival, and a hit that does not scorch your throat. Most people running a torch at 550°F to 700°F are burning concentrate that would have worked at half the heat.
Why does heat degrade THC?
THC vaporizes at 315°F
Tetrahydrocannabinol turns to vapor at roughly 315°F at normal air pressure. Below that point your oil melts and pools, and the vapor you see comes from terpenes rather than THC. This is why a lukewarm dab feels light and leaves residue behind.
THC converts to CBN above 450°F
Past 450°F, THC oxidizes into cannabinol (CBN). CBN is a real cannabinoid with a heavier, sleepier profile, but it is not the THC you paid for. Heat plus oxygen drives that conversion, so a glowing red banger is the fastest route to lost potency.
Combustion byproducts appear past 500°F
Quartz heated until it glows sits well above 600°F. At those temperatures, cannabis smoke testing has found benzene and other thermal breakdown products. A dab at that heat tastes like ash and hits the lungs harder than it needs to.
Dab temperature chart: what each range does
- 315°F to 350°F: heaviest terpene retention, thin vapor, small clouds. Best for delicate live resin and rosin.
- 350°F to 400°F: the standard low-temp dab. Complete THC vapor, most terpenes intact, smooth inhale.
- 400°F to 450°F: denser clouds, some terpene loss, THC still largely intact.
- 450°F to 550°F: visible CBN conversion, harsher taste, fewer active milligrams per hit.
- 550°F and up: heavy degradation, irritant formation, and concentrate you cannot get back.
How do you take a low-temp dab?
- Heat the banger until it just starts to glow, then let it cool. For a 3mm to 4mm quartz banger, count 45 to 60 seconds off the torch.
- Check the surface with an infrared thermometer or a dab timer. Aim for 380°F before you drop anything in.
- Load the dab and cap it right away. A carb cap holds heat in and stops oil from climbing the walls.
- Swab the banger with a dry cotton swab while it is still warm. Burnt residue from leftover oil changes the taste of your next dab.
Why do people dab too hot?
Torch and quartz takes a timer, a thermometer, and patience. Convenience wins instead. E-rigs ship with preset profiles at 450°F to 600°F because those settings make a thick cloud on the first pull, and a thick cloud reads as a good hit.
The cost of that shortcut stays hidden. You cannot taste missing THC. You just get fewer active milligrams from each gram, which makes hot dabbing the pricier habit across a month of use.
Does your rig change the right temperature?
No. What matters is the temperature of the surface the oil touches, not the brand of the device. An e-nail or e-rig holds a set number, so it removes most of the guesswork.
Torch and quartz takes practice. An infrared gun can read 50°F or more off target because quartz reflects heat rather than emitting it clean. Cold-start dabs sidestep the problem: load the oil first, heat the banger until the oil bubbles, then cap and inhale.
Does a low-temp dab waste concentrate?
Only if you go below the THC boiling point. Under 315°F, a puddle stays in the banger after your hit, and that puddle holds active THC. Clear or pale amber residue means you left something behind.
Dark brown residue means you scorched it instead. Clean vapor leaves a thin, light film on the quartz.
Does temperature matter more than the concentrate?
Temperature matters a lot, but your starting material sets the ceiling. Live resin and rosin carry more terpenes than shatter or distillate, so they reward low temps with flavor you can actually notice. Distillate has little terpene content to protect, so the choice is mostly about comfort.
Frequently asked questions
What is the best temperature for dabbing?
350°F to 400°F. That band vaporizes THC without pulling it apart into CBN.
At what temperature does THC burn?
THC does not burn at one number. It vaporizes near 315°F and degrades into CBN above 450°F.
Is 600°F too hot for a dab?
Yes. At 600°F you lose THC, terpenes, and lung comfort in the same hit.
Do terpenes need lower heat than THC?
Many do. Pinene and myrcene vaporize between 310°F and 340°F, close to THC. Heavier terpenes such as linalool need closer to 390°F.
How long should you wait after torching?
For a standard quartz banger, 45 to 60 seconds. Thick walls need longer, thin bangers need less.