Uranyl acetate,.dihydrate

Uranium Dissolve 2.1095 g U02(N03)2 6H2O (or 1.7734 g uranyl acetate dihydrate) in water... 

Oral administration of 3 mg uranium/ %/day as uranyl acetate dihydrate to pregnant mice on gestation days 6-15 caused an increase in fetotoxicity (stunted fetuses, external and skeletal malformations, and developmental variations) and maternal toxicity." In reproductive studies, no adverse effects were observed in testicular function or spermatogenesis in male mice treated with up to 80mg/kg/day uranyl acetate dihydrate for 64 days."... 

Uranyl acetate (0-1m). Dissolve 42-4 g uranyl acetate dihydrate, U02(CH3C00)2.2H20, in a mixture of 200 ml water and 30 ml concentrated acetic acid. After dissolution dilute the solution with water to 1 litre. 

Emission Spectra. The emission spectra of the uranyl acetate dihydrate in solution and in the solid state are shown in Figure 1. The fine structure in the solid state spectrum is not observed in solution. The corresponding emission spectra of uranyl-exchanged zeolites. A, Y, mordenite and ZSM-5 are shown in Figures 2-4. Excitation is carried out at 366 nm. The emission spectra have been scanned in all cases between 450 nm and at least 630 nm. 

The emission spectra for uranyl-exchanged zeolites Y, mordenite and X all have differences but do show some fine structure and therefore resemble the solid state spectrum of uranyl acetate dihydrate. In fact, the spectrum of uranyl ions exchanged into sodium mordenite is very similar to that of the uranyl acetate dihydrate solid spectrum shown in Figure 1. Further support for our belief that some zeolites have a solution like environment and others have a solid like environment comes from the correlation between the crystallinity of these uranyl-exchanged zeolites and the appearance of some fine structure in the emission spectrum. We find no apparent correlation between this fine structure and the concentration of the uranyl ion in the zeolites even with a ten-fold change in the concentration of the uranyl ion. 

Respiratory Effects. Respiratory effects from oral exposure to uranium are unlikely. In an acute-duration animal study, no adverse effects on the respiratory system were reported in rats given single oral doses of 118 mg uranium per kilogram body weight per day (U/kg/day) as uranyl acetate dihydrate (Domingo et al. 1987). 

In another study, the mean litter size of the offspring of female Sprague-Dawley rats was significantly lower (p<0.05) at an oral exposure of 28 mg U/kg/day uranyl acetate dihydrate on postnatal day 21 when a group of rats were exposed to 0.028, 0.38, 2.8, or 28 mg U/kg/day for 30 days. The viability index (day 21 day 0) and lactation index were also significantly reduced at this exposure level. No differences in the... 

Chemically induced renal failure caused 100% mortality in male Wistar rats after 5 daily exposures to 237 or 1,928 mg U/kg/day as uranyl nitrate hexahydrate or ammonium uranyl tricarbonate, respectively, applied in a water-Vaseline emulsion (De Rey et al. 1983). A 60% mortality rate was also reported for other male Wistar rats that received daily applications of 1,965 mg U/kg as uranyl acetate dihydrate for 1-11 days. No deaths were reported for other Wistar rats similarly treated with 2,103 mg U/kg/day as ammonium diuranate or to an unspecified dose of uranium dioxide (De Rey et al. 1983). 

No dermal effects were seen following application of a single dose of 618 mg U/kg as uranyl fluoride, 666 mg U/kg as uranium trioxide, 195 mg U/kg as sodium diuranate, 198 mg U/kg as ammonium diuranate, 410 mg U/kg as uranium peroxide, 458 mg U/kg as uranium dioxide, or 147 mg U/kg as triuranium octaoxide in 50% aqueous solution to the shaved skin of New Zealand white rabbits (Orcutt 1949). No dermal effects were observed on the shaved backs of New Zealand white rabbits to which a single dose of 98 mg U/kg as a 65% concentration of the uranium tetrafluoride in lanolin was applied (Orcutt 1949). Similarly, application of 3,929 mg U/kg as uranyl acetate dihydrate or 2,103 mg U/kg as ammonium uranyl tricarbonate in water-Vasehne emulsion to a 3 cm shaved area of the uncovered backs of 20 male Wistar rats in 1-10 daily applications had no effect on the skin of the rats (De Rey et al. 1983). 

Preparation in high yield from ethyl 2-hydroxyethylthiol carbonate (1) by catalytic rearrangement with uranyl acetate dihydrate. 

Uranyl acetate dihydrate CgHioOgU 6169-44-0 424.146 ye cry (HOAc) 80 dec 2.89 si EtOH... 

Ethyl 2-hydroxyethylthiolcarbonate containing 12.5 mg. per 750 g. uranyl acetate dihydrate heated with distillation of the product through a glass-helices-packed column in vacuo until the stillhead temp, rises above 84°/9 mm ethyl 2-mercaptoethylcarbonate (startg. m. f. 398). Y 97%. Also use of other catalysts s. D. D. Reynolds, D. L. Fields, and D. L. Johnson, J. Org. Ghem. 26, 5125 (1961). 

Undecylethylene Undecylic Alcohol Unslaked Lime Uranium Acetate Uranium Acetate Dihydrate Uranium Nitrate Uranium Oxyacetate Dihydrate Uranium Sulfate Uranium Sulfate Trihydrate Uranyl Acetate Uranyl Acetate Dihydrate Uranyl Nitrate... 

Uranyl acetate dihydrate Urazole Urea Urea hydrochloride Urea nitrate... 

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