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Refrigerating machines, containing nonflammable, nontoxic, liquefied gas or ammonia solution (UN2672) UN 2858: 4.1: Zirconium, dry, coiled wire, finished metal sheets, strip (thinner than 254 micrometres but not thinner than 18 micrometres) UN 2859: 6.1: Ammonium metavanadate: UN 2860: 6.1
Phenol is a component in liquid–liquid phenol–chloroform extraction technique used in molecular biology for obtaining nucleic acids from tissues or cell culture samples. Depending on the pH of the solution either DNA or RNA can be extracted. Phenol is so inexpensive that it also attracts many small-scale uses.
An example SDS, including guidance for handling a hazardous substance and information on its composition and properties. A safety data sheet (SDS), [1] material safety data sheet (MSDS), or product safety data sheet (PSDS) is a document that lists information relating to occupational safety and health for the use of various substances and products.
The industrial synthesis of 4,4′-biphenol was developed by Allan Hay in the 1960s. [2] [3] As the direct oxidative coupling of phenol gives a mixture of isomers, [4] [5] 4,4′-biphenol is instead prepared from 2,6-di-tert-butylphenol, where para-coupling is the only possibility. [3]
The primary use of 2-phenylphenol is as an agricultural fungicide. It is generally applied post-harvest. It is a fungicide used for waxing citrus fruits.It is no longer a permitted food additive in the European Union, but is still allowed as a post-harvest treatment in 4 EU countries.
Sodium phenoxide is a moderately strong base. Acidification gives phenol: [5] PhOH ⇌ PhO − + H + (K = 10 −10) The acid-base behavior is complicated by homoassociation, reflecting the association of phenol and phenoxide. [6] Sodium phenoxide reacts with alkylating agents to afford alkyl phenyl ethers: [2]
The simplest is phenol, C 6 H 5 OH. Phenolic compounds are classified as simple phenols or polyphenols based on the number of phenol units in the molecule. Phenol – the simplest of the phenols Chemical structure of salicylic acid, the active metabolite of aspirin. Phenols are both synthesized industrially and produced by plants and ...
The cyclohexadienones, also referred to in the literature as Chinolether, cleave the 4-position tert-butyl group upon heating under acidic conditions and aromatizes back to the substituted phenol. The reaction can be used for the synthesis of 2,6-di- tert -butyl-4-methoxyphenol, which is frequently used as an antioxidant.