21251-20-7
21251-20-7 structure
- Name: but-2-ynedial
- Chemical Name: but-2-ynedial
- CAS Number: 21251-20-7
- Molecular Formula: C4H2O2
- Molecular Weight: 82.05750
- Create Date: 2017-12-06 07:21:17
- Modify Date: 2024-01-02 11:49:57
| Name | but-2-ynedial |
|---|---|
| Synonyms |
acetylenedicarbaldehyde
2-Butynedial ACETYLENEDICARBOXALDEHYDE Butynedial |
| Density | 1.131 g/cm3 |
|---|---|
| Boiling Point | 154.5ºC at 760 mmHg |
| Molecular Formula | C4H2O2 |
| Molecular Weight | 82.05750 |
| Flash Point | 47.6ºC |
| Exact Mass | 82.00550 |
| PSA | 34.14000 |
| HS Code | 2912190090 |
|---|
|
~55%
21251-20-7 |
| Literature: Stephan, Dominique; Gorgues, Alain; Belyasmine, Ahmed; Coq, Andre Le Journal of the Chemical Society, Chemical Communications, 1988 , # 4 p. 263 - 264 |
|
~%
21251-20-7 |
| Literature: Dunn, Peter J.; Rees, Charles W. Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1987 , p. 1579 - 1584 |
|
~%
21251-20-7 |
| Literature: Gorgues, A.; Simon, A.; Coq, A. Le; Hercouet, A.; Corre, F. Tetrahedron, 1986 , vol. 42, # 1 p. 351 - 370 |
| Precursor 2 | |
|---|---|
| DownStream 0 | |
| HS Code | 2912190090 |
|---|---|
| Summary | 2912190090 acyclic aldehydes without other oxygen function。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0% |