4-Bromo-1-butyne（CAS# 38771-21-0)
| Hazard Symbols | T – Toxic |
| Risk Codes | R10 – Flammable R25 – Toxic if swallowed R43 – May cause sensitization by skin contact |
| Safety Description | S36/37 – Wear suitable protective clothing and gloves. S45 – In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | UN 1992 6.1(3) / PGIII |
| WGK Germany | 3 |
| HS Code | 29039990 |
| Hazard Class | 3 |
| Packing Group | III |
Introduction
4-Bromo-n-butyne is an organic compound. The following is an introduction to its properties, uses, manufacturing methods and safety information:
Quality:
- 4-bromo-n-butyne is a colorless liquid with a pungent and pungent odor.
- 4-Bromor-n-butyne is a volatile organic compound that reacts with oxygen in the air.
Use:
- 4-Bromo-n-butyne is often used as an intermediate in organic synthesis and participates in various organic chemical reactions.
- It can be used in the preparation of other organobromine compounds such as ethyl bromide, etc.
- It has a spicy and pungent smell and is sometimes used as one of the ingredients in anti-wolf sprays.
Method:
- 4-Bromo-n-butyne can be obtained by the reaction of 4-bromo-2-butyne with alkali metal bromides such as sodium bromide.
- This reaction generates a lot of heat and needs to be cooled to control the reaction temperature.
Safety Information:
- 4-Bromo-butyne is irritating and should be avoided in contact with skin, eyes and mucous membranes.
- Gloves, goggles, and protective clothing should be worn when using and handling 4-bromo-n-butyne.
- Avoid inhaling its vapors and ensure that the operation is carried out in a well-ventilated area.
- 4-Bromo-n-butyne is a flammable substance and should be kept away from fire and heat sources and stored in a cool, dry place.
- When handling and disposing of 4-bromo-n-butyne, relevant safety operating protocols should be followed.
