Original 1970 chemical trade vintage catalog for GREFCO, INC.  Main office and plant were located at 630 Shatto Place, Los Angeles, CA.

Manufacturers of Dicalite - 'Filteraids and Fillers'.

Diatomite is the most widely used type of filteraid. Dicalite diatomite as it comes from the quarry, is a soft, friable mineral superficially resembling chalk. It is composed of the siliceous 'skeletons' of microscopic plants deposited on the bottom of the oceans and lakes after and during the Miocene Age 100,000 to 15,000,000 years ago. Under the microscope, these particles of diatomite show up in a great variety of forms, of which more than 15,000 had been classified. The shape factor, combined with the rigidity of the particles, makes diatomite an excellent raw material for the production of filteraids.

Has product images, description, applications and specifications to provide product details. Some products mention they contain asbestos fibers.

Unbound from a large rare 1970 Chemical Materials Catalog, this unique old eight-page technical brochure would display beautifully matted and framed. Awesome cover graphics. A fabulous addition to your retro chemical library. Pages are loose.