3-MCPD
Wikipedia:
It is a colorless liquid. It is a versatile multifunctional building block. The compound has attracted attention as the most common member of chemical food contaminants known as chloropropanols. It is suspected to be carcinogenic in humans.
It is produced in foods treated at high temperatures with hydrochloric acid to speed up protein hydrolysis. As a byproduct of this process, chloride can react with the glycerol backbone of lipids to produce 3-MCPD. 3-MCPD can also occur in foods that have been in contact with materials containing epichlorohydrin-based wet-strength resins which are used in the production of some tea bags and sausage casings.
It is able to cross the blood-testis barrier] and blood–brain barrier
Revised safe intake for 3-MCPD in vegetable oils and food
3-MCPD and glycidol in infant formula
The Origin and Formation of 3-MCPD in Foods and Food Ingredients