Dimethylolbutanoic acid

Dimethylolbutanoic acid (CAS 10097-02-6, also known as DMBA or 2,2-Dimethylolbutyric acid) is a bifunctional hydroxy acid carrying two hydroxymethyl groups and one carboxylic acid group. It is commercially available under trade names including Nikkamer Ba and holds no assigned E-code, placing it outside food additive classifications.

In waterborne polyurethane dispersions, the carboxylic acid group is neutralised to introduce ionic stabilisation into the polymer backbone, enabling stable aqueous coatings without solvent. In personal care formulations, it functions as a pH buffer and skin conditioner by moderating acidic equilibria at the skin surface, supporting product stability across a defined pH range.

Dimethylolbutanoic acid is supplied as a powder or crystalline solid and is subject to REACH registration within the EU. It falls under HS code 29181990 for customs classification. Buyers should confirm grade specifications and lot documentation directly with the supplier to meet formulation or quality system requirements.