• This article is about the class of chemicals containing a phenol group. (wikipedia.org)
  • For the group of chemicals containing a phenol group, see Phenols . (wikipedia.org)
  • If you work in an industry that uses phenol, please read chemical labels and the accompanying Safety Data Sheet for hazard information. (cdc.gov)
  • A significant amount may enter through your skin when you come into contact with phenol vapor, liquid phenol or liquids containing phenol. (cdc.gov)
  • Persons whose clothing or skin is contaminated with liquid phenol can secondarily contaminate personnel by direct contact or through off-gassing vapor. (cdc.gov)
  • 7. The tar processing method according to claim 1, wherein the amount of steam added to the tar is 1% to 15% by weight of the phenol tar introduced into the reactor. (freepatentsonline.com)
  • 13. The process according to claim 10, wherein the amount of steam added to the tar is 1% to 15% by weight of the phenol tar. (freepatentsonline.com)
  • In a specific aspect, the phenol resin composition of the present invention is characterized in that it contains boehmite having an aspect ratio within a range from 1 to 100 and also contains an alumina-based compound as a filler, an amount of the boehmite being from 1 to 150 parts by weight based on 100 parts by weight of the phenol resin. (google.com.au)
  • 5 . A phenol resin composition comprising a phenol resin and acicular or cylindrical boehmite having an average particle diameter (minor diameter) of 100 nm or less, the amount of the boehmite being from 1 to 150 parts based on 100 parts by weight of the phenol resin. (google.com.au)
  • Bis(phenol) substrates undergo oxidative coupling under these conditions. (wikipedia.org)
  • 3) Oxidative coupling of bis(phenols) takes place in the presence of iodine(III) reagents. (wikipedia.org)
  • 10) Oxidative phenol coupling has been used for the synthesis of alkaloids related to morphine. (wikipedia.org)
  • The biosynthesis of erysodienone involves a key step of oxidative phenol coupling. (wikipedia.org)
  • Starting with S-norprotosinomenine precursor A, cyclization via oxidative phenol coupling forms intermediate B, which in turn can be rearranged to form intermediate C. Hydrogenation of C forms the diphenoquinone intermediate E. An intramolecular Michael addition reaction converts E to the final product, erysodienone. (wikipedia.org)
  • A biomimetic synthesis route for erysodienone was developed based on a similar oxidative phenol coupling mechanism. (wikipedia.org)
  • Barton and co-workers found that treating bisphenolethylamine precursor F with oxidants such as K3Fe(CN)6 initiated oxidative phenol coupling to form the 9-membered ring structure in intermediate D that itself undergo a Michael addition to give erysodienone. (wikipedia.org)
  • The net reaction is as follows: 2 PhOH + COCl2 → PhOCO2Ph + 2 HCl The use of toxic phosgene can be avoided by the oxidative carbonylation of phenol: 2 PhOH + CO + [O] → PhOCO2Ph + H2O Dimethyl carbonate can also be transesterified with phenol: CH3OCO2CH3 + 2 PhOH → PhOCO2Ph + 2 MeOH The kinetics and thermodynamics of this reaction are not favorable For example, at higher temperatures, dimethyl carbonate undesirably methylates phenol to give anisole. (wikipedia.org)
  • The force majeure has been declared only for phenol and will not impact shipments of other products produced at the Company's Frankford facility, including acetone and alpha-methylstyrene due to adequate inventory levels. (yahoo.com)
  • In making this conclusion, we cite the pK a of acetone enol, which is 10.9 (in comparison to phenol with a pK a of 10.0). (newworldencyclopedia.org)
  • In support of the second explanation, the p K a of the enol of acetone in water is 10.9, making it only slightly less acidic than phenol (p K a 10.0). (wikipedia.org)
  • Phenol tar is a heavy, viscous byproduct produced in the industrial synthesis of phenol and acetone from cumene. (freepatentsonline.com)
  • The cumene process (cumene-phenol process, Hock process) is an industrial process for developing phenol and acetone from benzene and propylene. (wikipedia.org)
  • This process converts two relatively cheap starting materials, benzene and propylene, into two more valuable ones, phenol and acetone. (wikipedia.org)
  • In order for this process to be economical, there must also be demand for the acetone by-product as well as the phenol. (wikipedia.org)
  • Cumene hydroperoxide is then hydrolysed in an acidic medium (the Hock rearrangement) to give phenol and acetone. (wikipedia.org)
  • As shown below, the resulting carbocation is then attacked by water, a proton is then transferred from the hydroxy oxygen to the ether oxygen, and finally the ion falls apart into phenol and acetone. (wikipedia.org)
  • The present invention is particularly useful for separating valuable products from phenol tar and/or mixtures of phenol tar with bisphenol-A tar. (freepatentsonline.com)
  • The following section provides additional detail about the potential health hazards of skin contact with phenol and the rationale behind the SK assignment. (cdc.gov)
  • To calculate phenol coefficient, the concentration of phenol at which the compound kills the test organism in 10 minutes, but not in 5 minutes, is divided by the concentration of the test compound that kills the organism under the same conditions (or, probably more common, dividing the dilution factor at which the tested substance shows activity by the dilution factor at which phenol shows comparable activity). (wikipedia.org)
  • After the 30 ton spill, in places the phenol concentration in the tap water went up to 0.11 ppm, which was 22 times the maximum allowed concentration of phenol in South Korea (0.005 ppm) and 110 times the maximum concentration set by the World Health Organization (0.001 ppm). (wikipedia.org)
  • Ingestion of high concentrations of phenol has resulted in internal burns and death. (cdc.gov)
  • Exposure to high concentrations of phenol in the air for several weeks caused paralysis and severe injury to the heart, liver, kidneys, and lungs, and in some cases, death. (cdc.gov)
  • Some animals that drank water with very high concentrations of phenol suffered muscle tremors and loss of coordination. (cdc.gov)
  • A critical review of available data indicates that contact of a significant area of skin with subjectively low concentrations of phenol (5-6%) may be extremely hazardous and life-threatening [ATSDR (cdc.gov)
  • Interesting, we distill enough phenol for over 6 months (eg. (bio.net)
  • By the time the plot was discontinued, it had succeeded in diverting enough phenol, according to Albert, to make about 4.5 million pounds of explosives. (wikipedia.org)
  • The public pressure soon forced Schweitzer and Edison to end the phenol deal, with the embarrassed Edison subsequently sending his excess phenol to the U.S. military, but by that time the deal had netted the plotters over two million dollars and there was already enough phenol to keep Bayer's aspirin plant running. (wikipedia.org)
  • A recent in silico comparison of the gas phase acidities of the vinylogues of phenol and cyclohexanol in conformations that allow for or exclude resonance stabilization leads to the inference that about ​ 1 ⁄ 3 of the increased acidity of phenol is attributable to inductive effects, with resonance accounting for the remaining difference. (wikipedia.org)
  • Phenol is designated as "Poison B" by the Department of Transportation (DOT), but no special containers are required due to its modest fire hazard and low reactivity. (cdc.gov)
  • The biochemical action of vitamin E , for example, depends largely on the reactivity of the phenol functional group. (britannica.com)
  • Copper complexation increases the reactivity of phenols towards this reagent. (wikipedia.org)
  • The sodium salt of phenol, sodium phenoxide , is far more water-soluble. (wikipedia.org)
  • Phenol-Soluble Modulin α Peptide Toxins from Aggressive Staphylococcus aureus Induce Rapid Formation of Neutrophil Extracellular Traps through a Reactive Oxygen Species-Independent Pathway. (gu.se)
  • We show here that NET-like structures can also be formed by neutrophils after interaction with phenol-soluble modulin α (PSMα) that are cytotoxic membrane-disturbing peptides, secreted from community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA). (gu.se)
  • In several sources, the structure of phenol red is shown with the sulfur atom being part of a cyclic group, similar to the structure of phenolphthalein. (wikipedia.org)
  • The present invention relates to a phenol resin composition comprising a phenol resin and boehmite having an average particle diameter (minor diameter) of 100 nm or less, and a phenol resin composition further comprising a benzooxazine resin in a weight ratio of the phenol resin to the benzooxazine resin. (google.com.au)
  • 1 . A phenol resin composition comprising a phenol resin and acicular or cylindrical boehmite having an average particle diameter (minor diameter) of 100 nm or less. (google.com.au)
  • 2 . A phenol resin composition comprising a phenol resin and acicular or cylindrical boehmite having an average particle diameter (minor diameter) of 100 nm or less, wherein the boehmite has an aspect ratio of 1 to 100. (google.com.au)
  • 9 . The phenol resin composition according to any one of claims 1 to 8 , which has thermosetting properties. (google.com.au)
  • 10 . The phenol resin composition according to any one of claims 1 to 4 , further comprising a benzooxazine resin in a weight ratio of the phenol resin to the benzooxazine resin within a range from 95/5 to 25/75. (google.com.au)
  • Phenol, formaldehyde, water and catalyst are mixed in the desired amount, depending on the resin to be formed, and are then heated. (wikipedia.org)
  • Phenol can have beneficial effects when used medically as an antiseptic or anesthetic. (cdc.gov)
  • Phenol was once an important antiseptic and is still used as a preservative in injectables. (cdc.gov)