• Pentachlorophenol (PCP) is a group of polychlorinated compounds used as preservatives for wood, leather and textiles to shield against the attack of moulds, fungus and bacteria. (tuv-sud.cn)
  • What is pentachlorophenol and its potential health hazard? (tuv-sud.cn)
  • The process for synthesizing pentachlorophenol often results in the production of ppm levels of polychlorinated dibenzodioxins (PCDD) and polychlorinated dibenzofurans (PCDF) with six or more chlorine substituents. (google.com)
  • A method for reducing contaminants during synthesis of pentachlorophenol includes providing a phenol-based starting material and a catalyst, which form a reaction mixture. (google.com)
  • Damage to the thyroid and reproductive system has been observed in laboratory animals exposed to high doses of pentachlorophenol. (cdc.gov)
  • Increases in liver, adrenal gland, and nasal tumors have been found in laboratory animals exposed to high doses of pentachlorophenol. (cdc.gov)
  • Death, low body weights, decreased growth, and skeletal effects have been observed in laboratory animals exposed to high levels of pentachlorophenol during development. (cdc.gov)
  • The present disclosure relates generally to synthesis of pentachlorophenol, and more particularly to method(s) for reducing microcontaminants during synthesis of pentachlorophenol. (google.com)
  • Reduction of the microcontaminant levels in the pentachlorophenol product is desirable for many reasons, and in particular, for environmental purposes. (google.com)
  • People who work or live near a wood treatment facility or in the production of utility poles, railroad ties, or wharf pilings may be exposed to pentachlorophenol in the air or by coming in contact with the treated wood. (cdc.gov)
  • Pentachlorophenol is broken down by sunlight, other chemicals, and microorganisms to other chemicals within a couple of days to months. (cdc.gov)
  • High concentrations of pentachlorophenol (130-970 μg liter −1 ) in effluents and the receiving stream likely caused mortality during the 7-day tests. (usgs.gov)
  • Pentachlorophenol is found in fish and other foods, but tissue levels are usually low. (cdc.gov)
  • People living near hazardous waste sites may also be exposed to higher than usual levels of pentachlorophenol. (cdc.gov)
  • As such, it would be desirable to provide a method for synthesizing pentachlorophenol with substantially reduced amounts of microcontaminants. (google.com)
  • The pathway for degradation of pentachlorophenol (PCP) by Sphingobium chlorophenolicum ( Fig. 1 ) ( 2 , 3 ) includes the remarkably toxic intermediate tetrachlorobenzoquinone (TCBQ). (pnas.org)
  • Generally, such processes have a large increase in the toxic equivalent (TEQ) concentration during a narrow window in time near the maximum pentachlorophenol yield. (google.com)
  • Soybean peroxidase (SBP) has been employed for the treatment of aqueous solutions containing pentachlorophenol (PCP) in the presence of hydrogen peroxide at pH range 5-7. (springer.com)