2-Bromophenylhydrazine hydrochloride（CAS# 50709-33-6)
| Risk Codes | R34 – Causes burns R20/21 – Harmful by inhalation and in contact with skin. R31 – Contact with acids liberates toxic gas R20 – Harmful by inhalation |
| Safety Description | S26 – In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S27 – Take off immediately all contaminated clothing. S36/37/39 – Wear suitable protective clothing, gloves and eye/face protection. S45 – In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S23 – Do not breathe vapour. |
| UN IDs | UN 1759 8/PG 2 |
| WGK Germany | 3 |
| HS Code | 29280000 |
| Hazard Note | Corrosive |
| Hazard Class | IRRITANT |
| Packing Group | Ⅱ |
Introduction
O-bromophenylhydrazine hydrochloride. Its properties are as follows:
1. Appearance: O-bromophenylhydrazine hydrochloride is a colorless to light yellow crystalline powder.
2. Solubility: soluble in water, ethanol and chloroform, slightly soluble in ether.
3. Stability: It is relatively stable at room temperature, and is easy to decompose when exposed to light, high temperature and oxidant.
4. Chemical reaction: o-bromophenylhydrazine hydrochloride can react with copper(II) ions to form reddish-brown or brown precipitates.
The main uses of o-bromophenazine hydrochloride are as follows:
1. Chemical reagent: o-bromophenazine hydrochloride can be used as a reducing agent, coordination reagent and raw material for organic synthesis.
2. Electrochemical applications: o-bromophenylhydrazine hydrochloride can be used for electrochemical analysis and batteries.
Preparation method of o-bromophenylhydrazine hydrochloride:
The preparation of o-bromophenylhydrazine hydrochloride is generally obtained by the reaction of bromophenylhydrazine with hydrochloric acid. In an appropriate solvent, bromophenylhydrazine is suspended in acetic acid, and then concentrated hydrochloric acid is slowly added, and precipitate is obtained after reaction, and o-bromophenylhydrazine hydrochloride can be obtained after drying, crystallization and other steps.
Safety Information:
1. O-bromophenylhydrazine hydrochloride requires precautions to avoid contact with skin and eyes during handling and storage. In case of accidental contact, rinse immediately with water.
2. Avoid inhaling the vapor of its dust or solution during operation to avoid respiratory discomfort.
3. Avoid contact with combustibles and oxidants to avoid fire or explosion.
4. Waste should be disposed of in accordance with local regulations, and it is forbidden to dump or discharge into the environment at will.
