Chemistry for Toxicity Testing by C.W. Jameson and Douglas B. Walters (Eds.)

By C.W. Jameson and Douglas B. Walters (Eds.)

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The batches of desalted material recovered from the dialysis were combined and processed in a ball mill for ~ 4 to 8 hr to reduce particle size to less than 60 mesh. The samples were then sealed in double plastic bags and kneaded for about 10 min to homogenize. As shown in Table 3-2, the final products contained much less salt than the press cakes, with corresponding increases in the organic constituents present. Table 3-2. Analytical Summary for Direct Blue N o . 15 and Acid Red N o . 114 Direct Blue N o .

It appears from our analysis that new nodes should be constructed to accommodate the structural features represented by single, aromatic ring nitro compounds and amino- or nitro-substituted anthraquinones. These two groups were not classified distinctly by the activity tree. The gaps in knowledge that have been identified by the aromatic amines/nitros analysis of our data base include fused-ring compounds and amino-and nitro-substituted aromatic heterocyclics. 26 GENERAL CHEMISTRY CONSIDERATIONS Table 2-5.

S. Standard ( U S S ) sieves. The calculated values are shown in Table 5-1. The values in Table 5-1 apply only to chemicals with the same crystalline form as the model. 4g/cc Figure 5-1. Crystal model. METHODS DEVELOPMENT FOR MIXING CHEMICALS IN RODENT FEED 61 Table 5-1. 053 per-milligram values shown in the table could be less than one-half the values shown. Also, since no lot of chemical is all one screen size, the actual number of crystals per milligram is a weighted average value depending on the screen analysis profile for that chemical.

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