3 5-difluoropyridine（CAS# 71902-33-5)
| Risk Codes | R36/37/38 – Irritating to eyes, respiratory system and skin. R50 – Very Toxic to aquatic organisms R20/21/22 – Harmful by inhalation, in contact with skin and if swallowed. R11 – Highly Flammable |
| Safety Description | S26 – In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 – Wear suitable protective clothing, gloves and eye/face protection. S61 – Avoid release to the environment. Refer to special instructions / safety data sheets. S36/37 – Wear suitable protective clothing and gloves. |
| UN IDs | 1993 |
| WGK Germany | 3 |
| HS Code | 29333990 |
| Hazard Note | Highly Flammable/Irritant |
| Hazard Class | 3 |
| Packing Group | II |
Introduction
3,5-Difluoropyridine is an organic compound with the chemical formula C5H3F2N. The following is a description of its nature, use, formulation and safety information:
Nature:
-Appearance: colorless liquid
-Melting point:-53 ℃
-Boiling point: 114-116 ℃
-Density: 1.32g/cm³
-Solubility: Soluble in water and most organic solvents.
Use:
- 3,5-Difluoropyridine is mainly used as an important raw material in organic synthesis. It can be used in the synthesis of pesticides, pharmaceuticals and other organic compounds.
-It can also be used as a chemical reagent for analysis and chemical research.
Preparation Method:
The preparation of 3,5-Difluoropyridine is usually carried out by one of the following methods:
-Starting from pyrimidine, first introduce fluorine atoms on pyrimidine, and then add fluorine atoms to the 3 and 5 positions.
-obtained from 3,5-difluoro chloropyrimidine or 3,5-difluoro bromopyrimidine reaction.
Safety Information:
- 3,5-Difluoropyridine may be harmful to the human body. Exposure to the compound may cause eye and skin irritation reactions. Therefore, it is necessary to take necessary protective measures, such as wearing appropriate gloves, goggles and protective clothing.
-When touching or inhaling 3,5-Difluoropyridine, the affected area should be cleaned immediately and advised by a doctor.
-During storage and handling, care should be taken to avoid contact with strong oxidants and strong acids.
Please note that when using and handling 3,5-Difluoropyridine, always follow the correct laboratory safety procedures and refer to the relevant safety data sheets and instructions.
