ASTM D 465 - 05 Standard Test Methods for Acid Number of Naval Stores Products Including Tall Oil and Other Related Products

American Society for Testing and Materials (ASTM). Current edition approved Dec. 1, 2005. Published January 2006. Originally approved in 1937. Last previous edition approved in 2001 as D 465 – 01. 4 p. These test methods are intended for determining the acid number of naval store products as defined in Terminology D 804 including tall oil products, wood and gum rosin, and other related materials. These test methods may not be applicable to all modified rosin products. Two test methods are covered, as follows:
1. Potentiometric method (referee), and
2. Internal indicator method (alternate).