Webphenol in the environment is mostly as a result of human activity and most of this enters the environment by air low level exposure from the correct use of products that contain … WebStudies show that urinary phenol levels are not reliable indicators of airborne benzene exposures below approximately 5 ppm.(1-6) This commentary presents the urinary phenol and ttMA results of one volunteer (first author) exposed to low levels of airborne benzene while simulating historical occupational exposure to Liquid Wrench. These results ...
Elevated urinary phenol levels not related to benzene exposure
WebEach indicator changes colors within a different pH range. Outside of that range, they are either the initial or final color. The exception to this rule is phenolphthalein, which is colorless when outside of its range. The pH range and color changes for each indicator are as follows: thymol blue, 1.2–2.8, red-yellow. Phenol is an organic compound appreciably soluble in water, with about 84.2 g dissolving in 1000 mL (0.895 M). Homogeneous mixtures of phenol and water at phenol to water mass ratios of ~2.6 and higher are possible. The sodium salt of phenol, sodium phenoxide, is far more water-soluble. Acidity … Zobraziť viac Phenol (systematically named Benzenol, also called carbolic acid or phenolic acid) is an aromatic organic compound with the molecular formula C6H5OH. It is a white crystalline solid that is volatile. The molecule … Zobraziť viac Because of phenol's commercial importance, many methods have been developed for its production, but the cumene process is the dominant technology. Cumene process Accounting for … Zobraziť viac Phenol was discovered in 1834 by Friedlieb Ferdinand Runge, who extracted it (in impure form) from coal tar. Runge called phenol "Karbolsäure" (coal-oil-acid, carbolic acid). Coal tar remained the primary source until the development of the Zobraziť viac Phenol and its vapors are corrosive to the eyes, the skin, and the respiratory tract. Its corrosive effect on skin and mucous membranes is due to a protein-degenerating … Zobraziť viac The major uses of phenol, consuming two thirds of its production, involve its conversion to precursors for plastics. Condensation with … Zobraziť viac Phenol is a normal metabolic product, excreted in quantities up to 40 mg/L in human urine. The Zobraziť viac Cryptanaerobacter phenolicus is a bacterium species that produces benzoate from phenol via 4-hydroxybenzoate. Rhodococcus phenolicus is a bacterium species able to … Zobraziť viac edwards cinema silber
ATSDR Phenol ToxGuide - Agency for Toxic Substances and …
WebPhenol has a distinct odor that is sickeningly sweet and tarry. You can taste and smell phenol at levels lower than those that are associated with harmful effects. Phenol … WebPhenol is a common contaminant of disused gasworks sites. It is estimated that 0.8 to 1.5 kg of phenol is produced per tonne of coke produced (Crookes & Howe 1996). There are … WebUrinary phenol levels above 81.5 mg/L or creatinine levels above 250 mg/g suggest overexposure. Disposition and Follow-up Consider hospitalizing patients who have … edwards cinema san marcos movies