Great resource link! I poached it get the LD50 for delta-9 tetrahydrocannabinol which is the psychoactive property the plant has been bred for. That number is actually higher at 1270 mg/kg.

And as you stated, it would have to be 100% purity concentrate in a vein.

That’s why cannabis fear mongering is utter nonsense. Yes, there can be seriously deleterious effects for heavy, chronic users. But unless you’re really trying, a toxic dose is almost impossible.