PARA PHENYL PHENOL
4-Phenylphenol
CAS: 92-69-3
Molecular Formula: C12H10O
PARA PHENYL PHENOL - Names and Identifiers
PARA PHENYL PHENOL - Physico-chemical Properties
| Molecular Formula | C12H10O |
| Molar Mass | 170.21 |
| Density | 1.0149 (rough estimate) |
| Melting Point | 164-166 °C (lit.) |
| Boling Point | 321 °C (lit.) |
| Flash Point | 330°F |
| Water Solubility | 0.7 g/L (20 ºC) |
| Solubility | Soluble in ethanol, ether, alkali hydroxide solution and organic solvent, insoluble in water. |
| Vapor Presure | 0Pa at 25℃ |
| Appearance | White or yellowish crystals or crystalline powder. |
| Color | White to slightly yellow |
| Merck | 14,7305 |
| BRN | 1907452 |
| pKa | 9.55(at 25℃) |
| PH | 7 (0.7g/l, H2O, 20℃) |
| Storage Condition | Sealed in dry,Room Temperature |
| Stability | Stable. Incompatible with strong oxidizing agents, strong bases, halogens. Combustible. |
| Refractive Index | 1.6188 (estimate) |
| MDL | MFCD00002347 |
| Physical and Chemical Properties | p-phenylphenol is a white flaky solid, tasteless, m.p.159 ~ 160 ℃, pure product m.p.166 ℃, B. p.323 ℃, relative density 1.24, almost insoluble in water, but easily soluble in organic solvents such as alcohol, ketone, ether and alkaline solution. |
| Use | Used in the preparation of oil-soluble resin and emulsifier, used as a component of corrosion-resistant paint, printing and dyeing carrier, etc |
PARA PHENYL PHENOL - Risk and Safety
| Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R51/53 - Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R38 - Irritating to the skin |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37 - Wear suitable protective clothing and gloves. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S36 - Wear suitable protective clothing. |
| UN IDs | UN3077 |
| WGK Germany | 2 |
| RTECS | DV5850000 |
| TSCA | Yes |
| HS Code | 29071900 |
| Hazard Class | 9 |
| Packing Group | III |
| Toxicity | LD50 ipr-mus: 150 mg/kg NTIS** AD691-490 |
PARA PHENYL PHENOL - Introduction
Colorimetric determination of acetaldehyde and lactic acid, quantitative determination of cell wall acid. An inhibitor of deoxyribonuclease I. It is also used as an analytical reagent.
Last Update：2022-10-16 17:30:09
PARA PHENYL PHENOL - Reference Information
| LogP | 3.6 at 25℃ |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Use | p-hydroxybiphenyl is used as an intermediate for dyes; Resins and rubbers. Synthesis of p-hydroxybiphenyl red sensitization; Green sensitization dye is one of the main raw materials of color films, also used as analytical reagents. Colorimetric Determination of acetaldehyde and lactic acid, quantitative determination of teichoic acid. Inhibitors of deoxyribonuclease I. Dyes, resins and rubber intermediates, fungicides, water-soluble paint solubilizers. biphenol, also known as P-Phenylphenol, is an intermediate of bactericide biphenyltriazole alcohol. for the preparation of oil-soluble resin and emulsifier, used as a component of corrosion-resistant paint, printing and dyeing carrier, etc. as a preservative, China's provisions can be used for citrus preservation, the maximum amount of 1.0g/kg, the residue is not more than 12 mg/kg. used as an intermediate for dyes, resins and rubbers. The synthetic red sensitizing and green sensitizing dyes are one of the main raw materials for color films and are also used as analytical reagents. It is used in the synthesis of pesticides and photosensitive dyes, and the synthesis of polymer liquid crystal monomers. Resin and rubber intermediates. This product synthesizes red light sensitizing, Green Light sensitizing dye is one of the main raw materials of color films, and is also used as an analytical reagent. |
| synthesis method | The distillation residue, a by-product of phenol production by sulfonation, was used as the raw material, and the phenyl phenol fraction was cut off by vacuum distillation, the solubility difference of O-Phenylphenol and p-Phenylphenol in trichloroethylene was used to separate the isomers. It can also be obtained by hydrolysis of p-chlorobiphenyl at high temperature. |
| production method | can be recovered from the distillation residue of the sulfonation process to produce phenol. The distillation residue of the sulfonation process to produce phenol contains about 40% of mixed-position (P-position and O-position) Phenylphenol, and the P-position product is separated and recovered by the difference of fractional distillation and solubility in trichloroethylene. See 2-phenylphenol sodium salt (17020). There are two preparation methods. Separation of by-products of phenol production by sulfonation by-products of phenol production by sulfonation distillation, the residue contains p-Phenylphenol and O-Phenylphenol, first the residue is heated, vacuum distillation, the vacuum degree is controlled at 53.3~66.7kPa, and the temperature gradually increases from 65~75 ℃ to more than 100 ℃, but not more than 135 ℃, the solubility of p-Phenylphenol in Trichloroethylene is different for separation, I .e., the mixed Phenylphenol is heated and dissolved in trichloroethylene, and crystals of p-Phenylphenol are precipitated by cooling, and the product is obtained by filtration and drying. Biphenyl sulfonation alkali fusion method biphenyl dissolved in acetic acid, sulfonated with sulfur trioxide, sulfonated product after separation and 20% NaOH aqueous solution to salt, and solid NaOH in 100~350 ℃ alkali fusion, acidification was then performed to obtain the product. |
| category | toxic substances |
| toxicity grade | high toxicity |
| Acute toxicity | intraperitoneal-mouse LD50; 150 mg/kg |
| flammability hazard characteristics | flammable; Combustion-induced irritating smoke |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; Stored separately from food raw materials |
| fire extinguishing agent | dry powder, foam, sand, carbon dioxide, water mist |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 22:29:15
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