Zinc Lactate Dihydrate (CAS-No 16039-53-5). It is also stated to be a new product that Jungbunzlauer Inc. has prepared for market sale. The Zinc Lactate Dihydrate is produced by the neutralization of Lactic Acid with a high purity zinc source and subsequent crystallization and is mainly used in dental care products such as toothpaste or mouthwash. It comes in a granular or powder form and is soluble in water.
[1] Please importantly note that only the relevant portion of the related is displayed above. You may refer to the said customs ruling for the entire ruling explanation.
[1]. https://rulings.cbp.gov/ruling/N307745