It sure is and they sure are. As you well know.

Boiled and oxidized linseed oil has many industrial uses. For linoleum, it's blended with tree resins, cork, wood pulp and etc ..

Many food oils and fats are also used in industry and cosmetics, and have been used thus for centuries. For example, animal fats have been blended with potash and lye to make soap, or boiled and rendered to make tallow for candles. Castille soap is made from olive oil. Etc, etc ...

Industrial linseed oil is a highly refined, processed product, intentionally treated with high heat and rolled in thin layers to expose to as much oxygen as possible, in order to develop its sealant properties. It bears little resemblance to fresh expeller-pressed nutritional flax oil that's carefully bottled in the absence of air and light.

Doreen

p.s. - How's that chocolate tooth of yours doing?