Philadelphia Quartz

Antimony pentoxide is priced about two to three times higher than the trioxide. However, because it is more efficient than the trioxide, the pentoxide is at least cost-equivalent. Antimony pentoxide is manufactured by both Philadelphia Quartz and Laurel Industries under the Nyacol and Fkeshield trade names. 

The Philadelphia Quartz Company in USA produces Q-Cel quartz micro-spheres 20,21. These have an apparent density of 300 kg/m3, a bulk density of 100 kg/m3, and an average diameter of 75 pm. They are mechanically very strong and are very cheap (half the price of glass and one third of the price of phenolic microspheres). 

Philadelphia Quartz Co. Pittsburgh Plate Glass Co. Reynolds Metals Co. 

Carbide and Carbon Chemicals Corp. Linde Air Products Co. Foote Mineral Co. Dow Chemical Co. Borden Co. Crown Cork Seal Co. Koppers Co. Foster D. Snell, Inc. Minnesota Mining Mfg. Co. Solvay Sales Div. National Distillers Co. Hercules Powder Co. Mathieson Chemical Corp. Philadelphia Quartz Co. Meflford Chemical Co. 

What 1 want to cover is something of the industrial beginnings of the soluble silicates, how their use has grown, perhaps a feeling of the burgeoning optimistic aspect of the world in which it took root and of the people who influenced and led its growth. Much reference is made to the Philadelphia Quartz Co. (PQ Co.) - now the PQ Corporation because this company has been a major factor throughout the whole period and because it has been able to make much more early data avail able.(0... 

Many companies had exhibits including Feuchtwanger and the Elkinton brothers. The Philadelphia Quartz Co. received the highest award of merit for "a most beautiful exhibit of silicate of soda" according to one commentator. They had an arresting experiment in which black, oily cotton rags used to wipe clean the many steam engines at the exhibition were washed with silicate and turned out a lovely soft white cotton. 

Elkinton of the production by the Philadelphia Quartz Co., primarily for the Elkinton Soap Co., but for many other customers. It does not include imported material or the production by known competitors such as Fortville in 1896 or around Boston. I would suggest that the line represents from 50 to 75% of the silicate used up to 1900. This growth was primarily for use in soap. 

Chester L. Baker, after an early indoctrination in the crystallization of commercial borax and other salts of Searles Lake, CA, in 1927, became Chief Chemist of the Philadelphia Quartz Co. of California, an affiliate formed in 1917 and owned 50% by the Stauffers. Baker arid later his assistant, Ralph Jue, worked long hours developing the phase relationships for the crystallization of hydrated metasilicates of sodium over... 

S-35, a Philadelphia Quartz sodium silicate solution, into polyethylene molds (1 1/2" diameter) to a depth approximating one millimeter and storing in controlled relative humidity desiccators at room temperature. Dehydration of the S-35 solution produced solid glass samples. Thicker S-35 hydrosilicate was produced by dehydration in an autoclave to avoid wrinkled surfaces. 

Fierce, R. 1975. Process for making granular hydrated alkali metal silicate. US3918921. Philadelphia Quartz Company. 

Pierce, R. H. 1976. Compacted alkali metal silicate. US3931036. Philadelphia Quartz Company. 

Curll, D. B. 1941. Manufacture of silicates. US2239880. Philadelphia Quartz Company. 

Baker, C. L., Holloway, P. W. 1965. Spherical particles of anhydrous sodium metasUicate and method of manufacture thereof US3208822. Philadelphia Quartz Company. 

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