3 4-Difluorotoluene(CAS# 2927-34-6)
| Hazard Symbols | F – Flammable |
| Risk Codes | 10 – Flammable |
| Safety Description | S16 – Keep away from sources of ignition. S29 – Do not empty into drains. S33 – Take precautionary measures against static discharges. |
| UN IDs | UN 1993 3/PG 3 |
| WGK Germany | 3 |
| HS Code | 29039990 |
| Hazard Note | Flammable |
| Hazard Class | 3 |
| Packing Group | II |
Introduction
3,4-difluorotoluene is an organic compound with the chemical formula C7H6F2. It is a colorless liquid with a special aromatic smell. The following is a detailed description of the nature, use, preparation and safety information of 3,4-difluorotoluene:
Nature:
-Appearance: colorless liquid
-Taste: Special aromatic smell
-Boiling point: 96-97 ° C
-Density: 1.145g/cm³
-Solubility: Insoluble in water, soluble in organic solvents
Use:
-3,4-difluorotoluene can be used as an important intermediate in organic synthesis.
-It can be used to synthesize drugs, dyes, pesticides and other chemicals.
-It can also be used as a raw material for electronic materials.
Method:
-3,4-difluorotoluene has many preparation methods, the most common is obtained by hydrogenation reduction reaction of p-nitrotoluene. Specific steps are:
1. First, P-nitrotoluene reacts with excess iron diammonium sulfate to obtain p-nitrotoluene iron diammonium salt.
2. Hydrogen is added, and the p-nitrotoluene iron diammonium salt is subjected to a reduction reaction in the presence of an iron catalyst.
3. Finally, 3,4-difluorotoluene was purified by distillation.
Safety Information:
-3,4-difluorotoluene is generally considered to be relatively safe under normal conditions of use. However, it is still necessary to comply with the relevant safety procedures.
-It is a flammable liquid and should avoid contact with fire and high temperature.
-Appropriate protective gloves, goggles and protective clothing are recommended for use and handling.
-Keep away from food, water and children’s reach.
-In the event of accidental exposure or accidental swallowing, seek medical help immediately and display the product label or container to a health care provider.



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