As an impurity in medicines (certain APIs and drug products). In processed foods and smoked meats in trace amounts. In chlorinated water and industrial processes. During chemical manufacturing involving dimethylamine compounds.

Quality control and impurity monitoring. Regulatory safety testing. Ensuring medicines meet acceptable impurity limits.

N-Nitrosodimethylamine (NDMA) is a nitrosamine impurity that can form unintentionally during the manufacture or storage of certain pharmaceuticals chemicals foods and water treatment products. Semi-volatile organic compound. Classified as a probable human carcinogen.