DL-Lysine monohydrochloride

DL-Lysine monohydrochloride (CAS 70-53-1, EC 200-739-0) is the racemic hydrochloride salt form of the amino acid lysine, also referenced under the names Lysine Hydrochloride and NSC 46705. It carries no assigned E-code and is distinct from the L-form used in nutritional supplementation.

In personal care formulations, it functions as a hair and skin conditioner by interacting with keratin structures, while its buffering capacity makes it suitable for stabilising pH-sensitive cosmetic and pharmaceutical systems. As a humectant, it attracts and retains moisture within topical preparations, and its antioxidant activity helps protect formulations against oxidative degradation.

DL-Lysine monohydrochloride is available in pharmaceutical and cosmetic grades, with compliance references including Ph.Eur. and FCC standards where applicable. It is subject to REACH registration requirements within the European Economic Area. Procurement teams should confirm grade specifications and packaging formats directly with the supplier.