Phe nol is one of the main components of co al tar, and Runge discovered phe nol from co al tar in 1834, and Laurent first made crystalline phe nol in 1841. Phe nol is the product of a hydrogen atom on the benzene ring being replaced by a hydroxyl group. Phe nols exist in nature either in their free form or in the form of derivatives (more often in the form of derivatives). The pure product is white or colorless and easy to deliquescence. In the air or in case of unclean substances, it gradually turns into reddish crystals. It has a special odor, is toxic and highly corrosive. The relative molecular mass is 94.11. The relative density is 1.0576. Melting point 43 ° CChemicalbook. Boiling point 181.7 °C, 120.7 °C (13.3×104Pa), 90.2 °C (3.33×103Pa), 70.9 °C (1.33×103Pa), 33.6 °C (1.33×102Pa). The freezing point is 40.85 °c. Flash point 85 °c. The refractive index is 1.5418 (41 °C). Vapor pressure 70.7Pa (25°C). Soluble in water, miscible with ethanol, ether, acetic acid, benzene and carbon disulfide. Azeotropic mixture with water, at this time the content of this product is 9.2%, and the azeotropic point is 99.6 °C.
The reactivity of phe nol is mainly the reaction of hydroxyl groups and aromatic rings. The hydrogen of the hydroxyl group is easily dissociated into hydrogen ions, so it is acidic, and reacts with sodi um hydroxide to generate sodium ph enol; However, the acidity of phe nol is lower than that of carboxylic acid and carbonic acid, so sodium phen ol is free phen ol in carbonated aqueous solution;which is further oxidized to form brown polymers; React with metal zinc, can be reduced to benzene; Under the action of nickel catalyst, hydrogenation can be reduced to cyclohexanol; Hydroxyl groups can also form ethers or esters; The reaction on the ph enolic aromatic ring of benzene Chemicalbook is mainly manifested as electrophilic substitution reactions, such as halogenation, nitrification, sulfonation, alkylation, acylation, carboxylation and coupling reaction with diazo salt, these electrophilic reactions mainly occur on the o-and para-position of hydroxyl groups; The aromatic ring has a high reaction ability to the carbonyl groups of ketones and aldehydes, such as reacting with to generate bisphe nol A; Under the catalytic action of acid and alkali, ph enol and formaldehyde can form phe nolic polymers. Ph enol is a food spice temporarily allowed in China's GB2760-1996 regulations.
| Ph enol Basic information |
| Chemical Properties Uses Production Toxicity |
| Product Name: |
P henol |
| Synonyms: |
Phe nol, water saturated, stabilized;hydroxybenzol;PH ENOL, LOOSE CRYSTALS A.C.S. REAGENT;PHE NOL - CRYSTALLINE PURE DAB, PH. EUR., USP;PH ENOL USP;LIQUEFIEDPHE NOL,LIQUEFIED,USP;PH ENOL,FUSEDCRYSTAL,BIOTECHGRADE;PHE NOL,FUSEDCRYSTAL,TECHNICAL |
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| MF: |
C6H6O |
| MW: |
94.11 |
| EINECS: |
203-632-7 |
| Product Categories: |
Chemical Synthesis;Aromatics;Phen ol;Aromatics Compounds;Chemistry;Electrophoresis Materials;Bioactive Small Molecules;Building Blocks;C6 to C8;Cell Biology;Chemical Synthesis;Organic Building Blocks;Oxygen Compounds;P henols;2000/60/EC;International Standards;NIOSH and OSHA Methods;OSHA 32: Analysis of Phe nol in Indoor AirVolatiles/ Semivolatiles;PER - POLAMethod Specific;Alpha Sort;European Community: ISO and DIN;P;P-SAlphabetic;N-PAlphabetic;Molecular Biology;Alphabetical Listings;Flavors and Fragrances;O-P;alcohol;fine chemical;Acids and BasesMolecular Biology;Biochemicals and Reagents;Denaturation;DNA&RNA Purification;Plant Nucleic Acid Purification;Reagents;ReagentsPlant Molecular Biology;Pesticides&Metabolites;PER - POLAEPA; |
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