The "Delta" cannabinoids — Δ8, Δ9, and Δ10 — show up on a lot of hemp product labels. They're related but distinct compounds, and the law treats them differently.
Delta-9 THC (Δ9)
Delta-9 is the cannabinoid most people picture when they think of "THC." It's the dominant intoxicating compound in marijuana. In hemp, the 2018 Farm Bill caps Delta-9 at 0.3% by dry weight; anything over that line is federally classified as marijuana, not hemp.
Hemp-derived Delta-9 products on shelves rely on this 0.3% threshold combined with serving size — a large gummy can contain a meaningful amount of Delta-9 while staying within 0.3% of total product weight.
Delta-8 THC (Δ8)
Delta-8 is a minor cannabinoid that occurs in trace amounts in cannabis. Most commercial Delta-8 is produced by converting hemp-derived CBD through a chemical process. Many users report it as less intense than Delta-9.
State law for Delta-8 is patchy — some states allow it under the hemp framework, others have explicitly banned or restricted it. Check your jurisdiction before ordering.
Delta-10 THC (Δ10)
Delta-10 is another minor isomer, also typically produced by converting hemp-derived CBD. It's less common than Delta-8 and reported as the mildest of the three.
Why the distinctions matter at the shelf
- Potency feels different. A Delta-8 gummy and a Delta-9 gummy at the same milligram dose can feel very different. Start small with anything new.
- Legality differs by state. A product legal in Texas may not be legal across the state line.
- Drug tests don't care which Delta. Most standard immunoassay screens can't distinguish between Δ8, Δ9, and Δ10 — they all carry drug-test risk.
Reading the label
A trustworthy label will tell you which Delta is dominant, the per-serving milligrams, and the source (hemp-derived). The COA will confirm those numbers in writing.