Document r6EqomZXbxYVQ0opvML7YR0aq

OWENS-ILLINOIS GLASS COMPANY oxmsjui. omens Toledo u ohio September 21, 19U8 Dr. A. J. Vorwald The Saranac Laboratory Saranac Lake, Hew Toxic Dear Dr. Vorwald: whp Qr. shook was at Saranac recently he talked with certain persons who were conducting tha anlaal experiments on Kaylo dust. Some questions eai up as to the composition of Xaylo--and to are listing thorn below with answers: 1. Is the dost now being need of the same compo sition as the material that was originally supplied? There was, to the best of our knowledge, no significant difference in the canpositions of the lots of Xaylo dost supplied, with this possible exception: the asbestos portion of tha wore recent dost nay hare containad a greater ratio of amosite to chryaotlle. 2. Does Xaylo contain tri- or dl-ealdum silicate? Apparently a ccaparison of ths effaot of portland cement and of kaylo dost gave rise to the inquiry if Xaylo contains tri- or dl-ealclus silicate. Tbs answer is no. Xaylo contains a bydrated mono-caldtm silicate. This coapound to hydrolyis In water to give a aaxiatai . pH of about 10.5 Tbs anhydrous tri- and di- ealdw silicates, wfaleh are constituents of eent, glee rise to pH Tallies of 12.3 and of 11.5 respeetlTely. 3. Is Santocal, on which the Trudeau Laboratory la now conducting similar tests, about ths seme In eabolition as Xaylo? Santocal la essentially 1005 amorphous silica. Kaylo, on the other hand, contains no free silica except for only occasional grains of residual or unreacted quarts. These grains o OWENS-ILLINOIS GLASS COMPANY Dr. A. J. Vorwald 2 September 21, 19U8 are, for the aoet part, relatively coarse. Tatyla may be considered as being 80 to 85 pereent of bydrated mono-calciun silicate of subnieroscopic crystal sise, and of 15 to 20 per cent of asbestos of the aaosite and chrysotile varieties. If there are any farther questions an the above, we hope you will drop us a lino. 11th kindest regards. Sincerely yours, V.Q.BasardtX (JJ. 't/, TumaTBTiT. BEULTZOnS DT7ISIC cc - Dr. C. F. Shook - Toledo Mr. D. I. Bowes - Toledo 00020) Asbestos Litig* Saranac Lake 1989 Depos. Exhibit p.77