How do I cite a SDS in AMA format?
You should cite it as a book and include additional information if it is electronically available.


  Author Surname Author Initial. Title. City: Publisher; Year Published:Pages Used. [Available at: http://Website URL. Accessed Month DD, YYYY.]


Example:


  Lenga RE and Votoupal KL. The Sigma-Aldrich library of regulatory and safety data. Milwaukee: Aldrich Chemical Company; 1993:23-34