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Drug disposal is the discarding of drugs. Individuals commonly dispose of unused drugs that remain after the end of medical treatment. [1] Health care organizations dispose of drugs on a larger scale for a range of reasons, including having leftover drugs after treating patients and discarding of expired drugs.
The U.S. Environmental Protection Agency (EPA) prohibits disposing of certain materials down drains. [4] Therefore, when hazardous chemical waste is generated in a laboratory setting, it is usually stored on-site in appropriate waste containers, such as triple-rinsed chemical storage containers [5] or carboys, where it is later collected and disposed of in order to meet safety, health, and ...
Requirements for LLW disposal sites have been established by the NRC and use a series of natural and engineered barriers to prevent any radioactive waste from escaping into the environment. [3] Currently, the United States has four low-level waste disposal facilities that accept various levels of LLW, all are located in agreement states. [11]
Acetonitrile is used mainly as a solvent in the purification of butadiene in refineries. Specifically, acetonitrile is fed into the top of a distillation column filled with hydrocarbons including butadiene, and as the acetonitrile falls down through the column, it absorbs the butadiene which is then sent from the bottom of the tower to a second separating tower.
log 10 of Acetonitrile vapor pressure. ... 50 (UTC). Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
In contrast, the chlorination of acetonitrile saturated with hydrogen chloride leads to pure trichloroacetonitrile even at 50–80 °C in good yields. [ 4 ] Like other halogenated acetonitriles, trichloroacetonitrile is produced from organic substances such as algae , humic acids and proteinaceous material in the disinfecting chlorination of ...
In fact, the 2008–2009 acetonitrile shortage was caused by a decrease in demand for acrylonitrile. [10] 2 CH 3 −CH=CH 2 + 2 NH 3 + 3 O 2 → 2 CH 2 =CH−C≡N + 6 H 2 O. In the SOHIO process, propylene, ammonia, and air (oxidizer) are passed through a fluidized bed reactor containing the catalyst at 400–510 °C and 50–200 kPa g. The ...
Tetrakis(acetonitrile)copper(I) tetrafluoroborate can be prepared starting from nitrosyl tetrafluoroborate, which is obtained from dinitrogen tetroxide and tetrafluoroboric acid. The nitrosyl salt is then reacted with metallic copper in acetonitrile , initially producing a green-blue copper(II) complex.