反式2-戊烯（CAS 646-04-8）：分子式 C5H10、分子量 70.13。
| CAS号 | 646-04-8 |
|---|---|
| 分子式 | C5H10 |
| 分子量 | 70.13 |
| 熔点 | -140.2 °C |
| 沸点 | 36.3 °C |
| LogP | 2.1 |
| 应用领域 | 用作polymerization 抑制剂、溶剂、and to make petroleum 树脂 and sec-amyl alcohols |
登记用途：用作polymerization 抑制剂、溶剂、and to make petroleum 树脂 and sec-amyl alcohols。
反式2-戊烯 是一种化工化合物，登记 CAS 号为 646-04-8，分子式 C5H10（分子量 70.13）。
登记 CAS 号：646-04-8
其分子式 C5H10 由 5 个碳、10 个氢 组成。
别名/同义词：反式2-戊烯 · trans-2-Pentene
反式2-戊烯 的 CAS 登记号为 646-04-8。
分子式 C5H10，分子量 70.13。
别名/同义词：反式2-戊烯、trans-2-Pentene。
登记用途：用作polymerization 抑制剂、溶剂、and to make petroleum 树脂 and sec-amyl alcohols。
反式2-戊烯（CAS 646-04-8）的独立参考数据，整理自公开化学数据库。
| CAS Registry Number | 646-04-8 |
|---|---|
| PubChem CID | 5326161 |
| Molecular formula | C5H10 |
| IUPAC name | (E)-pent-2-ene |
| UNII (FDA) | YCO1SJQ98H |
| Molecular Weight | 70.13 |
|---|---|
| XLogP3 | 2.1 |
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 0 |
| Rotatable Bond Count | 1 |
| Exact Mass | 70.078250319 |
| Monoisotopic Mass | 70.078250319 |
| Topological Polar Surface Area | 0 |
| Heavy Atom Count | 5 |
| Boiling Point | 36.3 °C |
|---|---|
| Melting Point | -140.2 °C |
| Flash Point | less than -4 °F (NFPA, 2010) |
| Solubility | In water, 203 mg/l @ 25 °C |
| Density | 0.6431 @ 25 °C/4 °C |
| Density | Density: 0.6482 @ 20 °C/4 °C; 0.5824 @ 80 °C/4 °C; 0.6675 @ 0 °C/4 °C |
| Vapor Density | 2.4 (Air= 1) |
| Vapor Pressure | 506.0 [mmHg] |
| Vapor Pressure | 5.06X10+2 mm Hg @ 25 °C |
| Surface Tension | 16.41 dyne/cm @ 25 °C |
trans-2-Pentene; 646-04-8; (E)-2-Pentene; (E)-pent-2-ene; 2-PENTENE; 2-Pentene, (E)-; Methylbut-1-ene; 2-Pentene, (2E)-; (2E)-2-Pentene; 3-Pentene; MFCD00009384; sym-Methylethylethylene; EINECS 261-403-7; YCO1SJQ98H; 58718-78-8; trans-beta-Amylene
| GHS notification summary | 1.2% (1 / 84) |
|---|
| GHS notification summary | 1.2% (1 / 84) |
|---|---|
| Reported hazard statements | H224 (75%), H225 (23.8%), H302 (26.2%), H304 (70.2%), H315 (56%), H319 (56%), H332 (26.2%), H335 (54.8%) |
This chemical does not meet GHS hazard criteria for 1.2% (1 of 84) of reports.
H224 (75%): Extremely flammable liquid and vapor [Danger Flammable liquids]
trans-2-Pentene · CAS 646-04-8 · C5H10. UNII YCO1SJQ98H. Boiling Point: 36.3 °C; Melting Point: -140.2 °C; Flash Point: less than -4 °F (NFPA, 2010).
数据来源：PubChem / Wikidata；与随货 COA 不一致时以 COA 为准。
English page: trans-2-Pentene