Document 6RayG931jn5JeaDXybNr5b5gm
FILE NAME: RT Vanderbilt (RTV)
DATE: 1956 Oct 8
DOC#: RTV137
DOCUMENT DESCRIPTION: Confidential J-M Memo RE Particle Size Distribution of J-M Talc
Tioehsenasr-MchaCnveniteer
Report l'io.
Date
0&tohRff.-.a>-JL35.
Title; PARTICLE SIZE DISTRIBUTION OF JOHNS-MANVILLE TALC
Requested by: C. Sheckler, Manvllle Plant
* . SUMMARY
A sample of powdered talc, supplied by Eastern Magnesia Talc Company and U3ed by Johns-Manville ilorporation, was submitted for a determination of particle size dis tribution. _ Distribution was determined by the Klein Hydrometer method in Isopropyl alcohol using 5 per cent Triton K-100 as a dispefsant. The results of the deter-
m .nation are as follows:
>20 microna
20-10 microns
10-8 microns
8-6 microns-
<6
microns
35 $ weight
63 % weight
0.5$ weight
0 ,l& weight
1.1$ weight
Contents: Summary only.
F. Rassveiler, GH C* Sheckler, Manvllle (3) E. R. Williams A, S. Cummins H. L`King
File; A12 (7)
Reported by:
F. L. Kadey, Jr.
WirflKKSi 7 5 , P* l.U*.
CRMC-HT-TALC-000044