D-Aspartic acid

D-Aspartic acid (CAS 1783-96-6) is the D-enantiomer of aspartic acid, supplied as a crystalline powder under the abbreviations DAS, D-Asp, and H-D-Asp-OH. It carries no assigned E-code and is distinct from its L-form counterpart in both biological activity and regulatory classification.

In personal care formulations, D-Aspartic acid functions as a chelator by binding divalent metal ions that would otherwise destabilise emulsions or discolour finished products. It also acts as a humectant and pH buffer in skin and hair conditioner systems, drawing moisture to the substrate while maintaining target formulation pH within a defined range.

The material is available in pharmaceutical and cosmetic grades, with supply conforming to REACH registration requirements for the European market. Standard packaging formats include fibre drums and multi-layer bags. Procurement teams should confirm grade-specific documentation, including certificate of analysis and safety data sheet, prior to ordering.