Original 1970 chemical trade vintage catalog for the PHILADELPHIA QUARTZ COMPANY. (PQ Chemicals). Main office was located in the Public Ledger Building, Philadelphia, PA. (Established 1831).

Manufacturers of Soluble Silicates.

Products include Sodium Silicates and Potassium Silicates; both are fully featured.

Has product description, applications and specifications to provide product details.

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