1. Caryl, C. R., and Ericks, W. P., Ind. Eng. Chem.,31, 44–47 (1939).
2. Corrin, M. L., Klevens, H. B., and Harkins, W. D., J. Chem. Phys.,14, 480–486 (1946).
3. Draves, C. Z., Am. Dyestuff Reptr.,28, 425–428 (1939). See also A.A.T.C.C. Tech. Manual and Yearbook,1960, 161–163; Test Method 17-52.
4. Draves, C. Z., and Sherburne, O. L., Am. Dyestuff Reptr.,39, 771–772 (1950).
5. Dreger, E. E., Keim, G. I., Miles, G. D., Shedlovsky, L., and Ross, J., Ind. Eng. Chem.,36, 610–617 (1944).