Just a heads up for all you homebrewers who use any PVC or polyethylene:
Bis(2-Ethylhexyl)phthalate leaches out of anything made of PVC. I'm an environmental scientists and anywhere there is PVC around, there's this compound. Usually i complete water sampling at the ambient outside temperature, but being many times you are heating up the PVC/poly/plastic, i imagine even more might leach out of the plastics. I would imagine this includes water coolers used for all grain systems as well.
Here's some info on this compound, Bis(2-Ethylhexyl)phthalate.
http://www.epa.gov/ttn/atw/hlthef/eth-phth.html
http://en.wikipedia.org/wiki/Bis(2-ethylhexyl)_phthalate
"DEHP has a low vapor pressure, but the temperatures for processing PVC articles are often high, leading to release of elevated levels, raising concerns about health risks (see outgassing). It can be absorbed from food and water. Higher levels have been found in milk and cheese. It can also leach into a liquid that comes in contact with the plastic; it extracts faster into nonpolar solvents (eg. oils and fats in foods packed in PVC). Food and Drug Administration (FDA) therefore permits use of DEHP-containing packaging only for foods that primarily contain water. In soil, DEHP contamination moves very slowly because of its low solubility in water. Therefore, leaching from disposed plastics in landfills is generally slow. The US EPA limits for DEHP in drinking water is 6 ppb (now 3ppb). The U.S. agency OSHA's limit for occupational exposure is 5 mg/m3 of air."
"Bis(2-ethylhexyl) phthalate (DEHP) is used in the production of polyvinyl chloride (PVC). It exhibits low toxicity from acute (short-term) and chronic (long-term) exposures. Acute exposure to large oral doses of DEHP can cause gastrointestinal distress in humans. No information is available on the chronic, reproductive, developmental, or carcinogenic effects of DEHP in humans. Animal studies have reported increased lung weights and increased liver weights from chronic inhalation exposure to DEHP. Oral exposure has resulted in developmental and reproductive effects in rats and mice. A study by the National Toxicology Program (NTP) showed that DEHP administered orally increased the incidence of liver tumors in rats and mice. EPA has classified DEHP as a Group B2, probable human carcinogen."
"DEHP metabolites measured from the blood of pregnant women have been significantly associated with the decreased penis width (anything but that!!), shorter anogenital distance, and the incomplete descent of testes of their newborn sons, replicating effects identified in animals."
Bis(2-Ethylhexyl)phthalate leaches out of anything made of PVC. I'm an environmental scientists and anywhere there is PVC around, there's this compound. Usually i complete water sampling at the ambient outside temperature, but being many times you are heating up the PVC/poly/plastic, i imagine even more might leach out of the plastics. I would imagine this includes water coolers used for all grain systems as well.
Here's some info on this compound, Bis(2-Ethylhexyl)phthalate.
http://www.epa.gov/ttn/atw/hlthef/eth-phth.html
http://en.wikipedia.org/wiki/Bis(2-ethylhexyl)_phthalate
"DEHP has a low vapor pressure, but the temperatures for processing PVC articles are often high, leading to release of elevated levels, raising concerns about health risks (see outgassing). It can be absorbed from food and water. Higher levels have been found in milk and cheese. It can also leach into a liquid that comes in contact with the plastic; it extracts faster into nonpolar solvents (eg. oils and fats in foods packed in PVC). Food and Drug Administration (FDA) therefore permits use of DEHP-containing packaging only for foods that primarily contain water. In soil, DEHP contamination moves very slowly because of its low solubility in water. Therefore, leaching from disposed plastics in landfills is generally slow. The US EPA limits for DEHP in drinking water is 6 ppb (now 3ppb). The U.S. agency OSHA's limit for occupational exposure is 5 mg/m3 of air."
"Bis(2-ethylhexyl) phthalate (DEHP) is used in the production of polyvinyl chloride (PVC). It exhibits low toxicity from acute (short-term) and chronic (long-term) exposures. Acute exposure to large oral doses of DEHP can cause gastrointestinal distress in humans. No information is available on the chronic, reproductive, developmental, or carcinogenic effects of DEHP in humans. Animal studies have reported increased lung weights and increased liver weights from chronic inhalation exposure to DEHP. Oral exposure has resulted in developmental and reproductive effects in rats and mice. A study by the National Toxicology Program (NTP) showed that DEHP administered orally increased the incidence of liver tumors in rats and mice. EPA has classified DEHP as a Group B2, probable human carcinogen."
"DEHP metabolites measured from the blood of pregnant women have been significantly associated with the decreased penis width (anything but that!!), shorter anogenital distance, and the incomplete descent of testes of their newborn sons, replicating effects identified in animals."