Radioactivity reproductive toxicity

Exposure to the radioactive form, cesium-137, can result in an increased risk of cancer. No data on long-term exposure, genotoxicity, mutagenicity, carcinogenicity, and reproduction toxicity have been found for cesium hydroxide. 

Diffusion Experiment Results of the diffusion experiment are shown in Table VI. One or more cm of untreated soil covering 20 g of soil treated with 100 ppm c DDT was very effective in preventing toxic concentrations of DDT from diffusing into water for one year. If any DDT did diffuse through the soil into water, the concentration was not sufficiently high to affect the survival or reproduction of daphnids. A 60% reproductive impairment has been reported when daphnids were exposed to 100 ng/L DDT W. Therefore, on the basis of the daphnid bioassay, the concentration of DDT in water over the 1 cm of soil was at or below 100 ng/L. On the other hand, where untreated soil did not cover the DDT layer, daphnids never survived more than 7 days. This result is very similar to those from the microecosystem experiment. The 1-ml water samples indicated a total DDT concentration of 10 to 20 ppb. In addition, TLC analysis of treated soil extracts after one year showed the expected conversion of DDT to DDD, but only when covered by 1 or more cm of soil. For the uncovered soil, 87% of the radioactivity was DDT. Apparently, 1 cm of soil was sufficient to produce the anaerobic conditions known to be necessary for conversion of DDT to DDD (j 2). 

DOT CLASSIFICATION 7 Label RADIOACTIVE, Oxidizer SAFETY PROFILE Poison by intraperitoneal, intravenous, and intratracheal routes. Moderately toxic by ingestion. Experimental reproductive effects. Radioactive. An oxidizing material when in contact with readily combustible substances will cause violent combustion or ignition. When heated to decomposition it emits toxic fumes of NOx. See also THORIUM and NITRATES. 

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