ASTM D 3722 - 05 Standard Specification for Natural Red and Brown Iron Oxide Pigments

American Society for Testing and Materials (ASTM). Current edition approved Sept. 1, 2005. Published September 2005. Originally approved in 1978. Last previous edition approved in 1999 as D 3722 – 82 (1999). 2 p. This specification covers dry and wet ground naturally occurring iron oxide, dry and wet ground calcined naturally occurring iron oxide, and mixtures of these with synthetic iron oxides. These pigments are suitable for use in paints, coatings, and many other applications.