Aromatic hydrocarbons, biphenyl-rich
Biphenyl
CAS: 92-52-4;68409-73-4
Molecular Formula: C12H10
Aromatic hydrocarbons, biphenyl-rich - Names and Identifiers
| Name | Biphenyl |
| Synonyms | Biphenyl Diphenyl 1,1'-Biphenyl Diphenyl Mixture Distilled hydrodealkylized toluene Biphenyl rich aromatic hydrocarbons Aromatic hydrocarbons, biphenyl-rich |
| CAS | 92-52-4 68409-73-4 |
| EINECS | 270-059-7 |
| InChI | InChI=1/C12H10/c1-3-7-11(8-4-1)12-9-5-2-6-10-12/h1-10H |
Aromatic hydrocarbons, biphenyl-rich - Physico-chemical Properties
| Molecular Formula | C12H10 |
| Molar Mass | 154.2078 |
| Density | 0.992 |
| Melting Point | 68.5-71℃ |
| Boling Point | 255℃ |
| Flash Point | 113℃ |
| Water Solubility | insoluble |
| Vapor Presure | 0.0227mmHg at 25°C |
| Refractive Index | 1.571 |
| Physical and Chemical Properties | Characteristics of white or slightly yellow scaly crystals, with a unique flavor. solubility insoluble in water, acid and alkali, soluble in alcohol, ether, benzene and other organic solvents. |
| Use | Engineering Plastics polysulfone raw materials, the preparation of three chlorine biphenyl, five chlorine biphenyl, as a heat carrier, preservatives, dyes, etc |
Aromatic hydrocarbons, biphenyl-rich - Risk and Safety
| Hazard Symbols | Xi - Irritant N - Dangerous for the environment  |
| Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| Safety Description | S23 - Do not breathe vapour. S60 - This material and its container must be disposed of as hazardous waste. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. |
| UN IDs | UN 3077 |
Aromatic hydrocarbons, biphenyl-rich - Introduction
Nature:
1. It is a colorless liquid with a sweet and aromatic aroma.
2. Volatile, highly flammable, soluble in organic solvents and inorganic acids.
Usage:
1. As an organic solvent widely used in the chemical industry, it plays an important role in solvent extraction, degreasing, and preparation of cleaning agents.
2. Biphenyl can also be used as a raw material and intermediate for various chemical substances, used in the synthesis of dyes, plastics, rubber and other products.
3. It can also be used as a fuel additive, automotive coolant, and a component of plant protectants.
Method:
There are multiple pathways, the most common of which is the cracking of coal tar. Through coal tar cracking reaction, a mixed fraction containing biphenyl can be obtained, and then high-purity biphenyl can be obtained through purification and separation techniques.
Security information:
1. Biphenyl is a flammable liquid that can cause fires when exposed to sources of fire or high temperatures. Therefore, it is important to stay away from open flames, heat sources, and static electricity.
2. Biphenyl vapor has certain toxicity and can irritate the respiratory system, nervous system, and skin. Therefore, appropriate protective equipment should be worn and a well ventilated working environment should be ensured.
3. Biphenyls can also cause damage to aquatic organisms, so they should be avoided from being discharged into water bodies.
4. When handling and storing biphenyls, strict adherence to relevant safety operating procedures should be followed to avoid leakage and accidents.
Last Update：2024-05-08 11:41:16
Aromatic hydrocarbons, biphenyl-rich - Nature
Open Data Verified Data
white or yellowish scaly crystals with a unique flavor. Melting point 71 °c. Boiling point 255.9 °c. The relative density was 0.992. Refractive index 475. Flash point 113 °c. Insoluble in water, acid and alkali, soluble in alcohol, ether, benzene and other organic solvents. It is chemically similar to benzene and can be chlorinated, nitrated, sulfonated and hydrogenated.
Last Update：2024-01-02 23:10:35
Aromatic hydrocarbons, biphenyl-rich - Preparation Method
Open Data Verified Data
in high temperature tar containing about 3.0%, after fractionation, can also be used as raw materials for benzene synthesis.
- with the wash oil fraction as the raw material, the 250~260 ℃ fraction was cut and then distilled, and the 253~257 ℃ fraction was cut and separated by cooling and crystallization to obtain the finished product.
- benzene via pyrolysis dehydrogenation
Last Update：2022-01-01 10:39:46
Aromatic hydrocarbons, biphenyl-rich - Use
Open Data Verified Data
organic heat carrier is also the raw material of high quality insulation liquid; Used as plasticizer, preservative; Also used in the manufacture of dyes, engineering plastics and high energy fuels.
Last Update：2022-01-01 10:39:45
Aromatic hydrocarbons, biphenyl-rich - Safety
Open Data Verified Data
- This product has a stimulating effect, damage to the heart muscle, liver and kidney, rat oral LD50 3280mg/kg (25% olive oil solution), the rabbit 2400mg/kg.
- This product is flammable, exposed to high temperature, open flame, oxidant burning danger, should be stored in a cool, ventilated warehouse away from the fire, heat source, and oxidant, strong acid substances stored separately, light loading and unloading, keep the package intact.
Last Update：2022-01-01 10:39:46
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