3 4-Difluorobenzoic acid（CAS# 455-86-7)
| Hazard Symbols | Xn – Harmful |
| Risk Codes | R22 – Harmful if swallowed R36/37/38 – 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. S37/39 – Wear suitable gloves and eye/face protection |
| UN IDs | UN 2811 |
| WGK Germany | 3 |
| HS Code | 29163900 |
Introduction
3,4-Difluorobenzoic acid. The following is an introduction to its nature, use, manufacturing method and safety information:
Quality:
- 3,4-Difluorobenzoic acid is a white crystalline solid with a pungent odor.
- It is solid at room temperature and can be soluble in organic solvents such as alcohols, ethers, etc., and has limited solubility in water.
- 3,4-Difluorobenzoic acid is acidic and reacts with alkali to form the corresponding salt.
Use:
- 3,4-difluorobenzoic acid is widely used as an important intermediate and raw material in organic synthesis.
Method:
- There are many preparation methods for 3,4-difluorobenzoic acid, one of which is commonly used by fluorinating fluorinated acid.
- The specific preparation method includes the selection of fluorinating agent and the control of reaction conditions, common fluorinating agents are hydrogen fluoride, sulfur polyfluoride, etc.
Safety Information:
- 3,4-Difluorobenzoic acid is a chemical and should be followed in accordance with relevant safety procedures and appropriate chemical protective equipment.
- It may have an irritating effect on the eyes, skin, and respiratory tract and should be washed promptly after contact.
- During treatment, contact with strong oxidants and strong acids should be avoided to prevent dangerous reactions.
- 3,4-Difluorobenzoic acid should be stored in a cool, dry, well-ventilated place, away from fire and heat sources.
