Yes, HHC is legal in Maine. Under its revised statutes , all hemp derivatives with a THC concentration of less than 0.3% by dry weight are legal. This includes extracts, cannabinoids, isomers, and salts of isomers.
Topical application products, food additives, and hemp-derived food products are also legal in Maine, as long as they do not exceed the 0.3% THC threshold.
Most US states don’t have any laws covering HHC. Despite this compound being around for decades, it seems lawmakers haven’t heard of it yet. Because of this, HHC is legal in most but not all US states. Here’s a snapshot of the current state of HHC legality in the United States.