How to read a butane Certificate of Analysis
What each line on a butane CoA means: purity by gas chromatography, sulfur, moisture, BTEX, lot numbers and the lab. A checklist for bulk buyers.
Butane guides
Practical guides on butane purity, lab reports, blends, cylinder valves and safe handling, from the team at Puretane.
N-butane vs. isobutane vs. 70/30 butane/propane blends
Boiling points, vapor pressures and where each fits: n-butane, isobutane, propane and 70/30 n-butane/propane blends, with NIST data.
CGA-555 vs. CGA-510 valves on butane cylinders
Why bulk butane cylinders use CGA-555 liquid-withdrawal valves instead of CGA-510 (POL) vapor valves, and what that means for your fittings.
Closed-loop hydrocarbon extraction and solvent quality
How closed-loop hydrocarbon extraction works, why open-loop is unsafe, and why extraction-grade butane purity, sulfur and residue matter.
Where is your butane made? And why it matters
Where butane is refined, filled and stored affects what ends up in your process. What to ask suppliers about origin, filling and lab testing.
The complete guide to butane torch safety and maintenance
How to use, refill, clean and store a butane torch safely, why fuel quality matters, and how to troubleshoot weak or sputtering flames.
Where to buy butane near you
How to buy clean butane: cases of cans shipped to your door, or pallets of 120 lb n-butane and 70/30 cylinders delivered across the US and Canada.