3,3'-difluorobiphenyl - Names and Identifiers
3,3'-difluorobiphenyl - Physico-chemical Properties
Molecular Formula | C12H8F2
|
Molar Mass | 190.19 |
Density | 1,21 g/cm3 |
Melting Point | 7-8°C |
Boling Point | 130 °C |
Flash Point | 130°C/14mm |
Solubility | Difficult to mix. |
Vapor Presure | 0.018mmHg at 25°C |
Specific Gravity | 1.21 |
BRN | 2046445 |
Storage Condition | Sealed in dry,Room Temperature |
Refractive Index | 1.568 |
MDL | MFCD00039216 |
3,3'-difluorobiphenyl - Risk and Safety
Hazard Symbols | Xi - Irritant
|
Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin.
|
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36 - Wear suitable protective clothing.
|
UN IDs | 3151 |
Hazard Note | Irritant |
Hazard Class | 9 |
Packing Group | II |
3,3'-difluorobiphenyl - Introduction
3,3 '-difluorobiphenyl is an organic compound with the chemical formula C12H8F2. It consists of two benzene rings connected by a difluoro atom. The following is a description of the nature, use, preparation and safety information of 3,3 '-difluorobiphenyl:
Nature:
-Appearance: colorless or light yellow liquid
-Boiling point: about 230 degrees Celsius
-Density: about 1.225 g/ml
-Solubility: Soluble in organic solvents such as ethanol, acetone and ether, insoluble in water
-Stability: stable at room temperature, but may decompose when heated
Use:
- 3,3 '-difluorobiphenyl is often used as starting material and intermediate in organic synthesis
-It is widely used in the pharmaceutical, pesticide and dye industries
-As one of the components of liquid crystal materials, used in display technology and optical fields
Preparation Method:
- 3,3 '-difluorobiphenyl can be obtained by the reaction of phenylacetylene and fluorine gas. First, phenylacetylene is hydrogenated under the action of a copper chloride catalyst to obtain semi-hydrogenated phenylacetylene. Then, the semihydrogenated phenylacetylene is reacted with fluorine gas to obtain 3,3 ′-difluorobiphenyl.
Safety Information:
- 3,3 '-difluorobiphenyl has low toxicity, but it is still necessary to pay attention to safe operation.
-Avoid direct contact with skin, eyes and respiratory tract.
-Wear appropriate personal protective equipment such as goggles, gloves and protective masks when used.
-Operate in a well-ventilated place to avoid inhaling its vapors.
-Store away from ignition and oxidizing agents.
Last Update:2024-04-10 22:29:15