5 6-Dichloronicotinic acid（CAS# 41667-95-2)
| Hazard Symbols | Xi – Irritant |
| Risk Codes | 36/37/38 – Irritating to eyes, respiratory system and skin. |
| Safety Description | S22 – Do not breathe dust. S24/25 – Avoid contact with skin and eyes. S36 – Wear suitable protective clothing. S26 – In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| WGK Germany | 3 |
| HS Code | 29339900 |
| Hazard Class | IRRITANT |
Introduction
5,6-Dichloronicotinic acid is an organic compound. The following is a detailed description of its nature, use, preparation method and safety information:
Quality:
- Appearance: 5,6-Dichloronicotinic acid is colorless to light yellow crystals or crystalline powder.
- Solubility: soluble in alcohols and ethers, slightly soluble in water.
Use:
- 5,6-Dichloronicotinic acid is often used as a chemical reagent as an oxidant, reducing agent and catalyst in organic synthesis reactions.
Method:
- 5,6-dichloronicotinic acid can usually be prepared by nitroreduction of p-nitrophenol. Nitrophenol is treated with nitrous acid to produce 5,6-dinitrophenol. Then, 5,6-dinitrophenol is reduced to 5,6-dichloronicotinic acid using chlorine or nitroreducing agents.
Safety Information:
- The dust or crystals of 5,6-dichloronicotinic acid have an irritating effect and may cause irritation to the eyes, skin and respiratory tract.
- Wear appropriate personal protective equipment such as protective eyewear, gloves and respirators when in use.
- Avoid inhaling dust and avoid skin contact.
- During storage and handling, avoid contact with strong oxidizing agents or flammable materials.
- In case of accidental exposure to 5,6-dichloronicotin, rinse the affected area immediately with plenty of water and seek medical advice.
