38771-21-0
38771-21-0 structure
- Name: 4-Bromo-1-butyne
- Chemical Name: 4-bromobut-1-yne
- CAS Number: 38771-21-0
- Molecular Formula: C4H5Br
- Molecular Weight: 132.986
- Create Date: 2018-09-18 11:18:48
- Modify Date: 2026-07-02 10:10:45
| Name | 4-bromobut-1-yne |
|---|---|
| Synonyms |
4-Bromo-1-butyne >
1-Butyne, 4-bromo- (6CI,9CI) 1-Butyne,4-bromo 4-bromobutyne 4-bromo-but-1-yne 1-Bromo-3-butyne 4-bromo-butyne 4-BROMO-1-BUTYNE, 4-BROMO-1-BUTYNE, 4-BROMO-1-BUTYNE, 4-BROMO-1-BUTYNE 4-Bromo-1-butyne,1-Bromo-3-butyne 3-Butynyl Bromide 4-Bromobut-1-yne 1-bromo-3-butynol 4-broMobut-1-yne homopropargyl bromide |
| Density | 1.5±0.1 g/cm3 |
|---|---|
| Boiling Point | 118.3±23.0 °C at 760 mmHg |
| Molecular Formula | C4H5Br |
| Molecular Weight | 132.986 |
| Flash Point | 32.3±17.0 °C |
| Exact Mass | 131.957458 |
| LogP | 1.72 |
| Vapour Pressure | 20.0±0.2 mmHg at 25°C |
| Index of Refraction | 1.483 |
| Storage condition | 2~8℃ |
| Hazard Codes | T: Toxic; |
|---|---|
| Risk Phrases | R10;R25;R43 |
| Safety Phrases | S36/37-S45 |
| RIDADR | 2811.0 |
| HS Code | 2903399090 |
| Precursor 2 | |
|---|---|
| DownStream 7 | |
| HS Code | 2903399090 |
|---|---|
| Summary | 2903399090. brominated,fluorinated or iodinated derivatives of acyclic hydrocarbons. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:5.5%. General tariff:30.0% |