trans-2-Pentene (CAS 646-04-8) — formula C5H10, molecular weight 70.13; category organic chemicals.
| CAS Number | 646-04-8 |
|---|---|
| Molecular Formula | C5H10 |
| Molecular Weight | 70.13 |
| Melting Point | -140.2 °C |
| Boiling Point | 36.3 °C |
| LogP | 2.1 |
| Category | Organic Chemicals |
trans-2-Pentene is a carbon-based organic compound with CAS registry number 646-04-8 and molecular formula C5H10 (molecular weight 70.13), belonging to the organic chemicals segment of chemical raw materials.
CAS number: 646-04-8
Its molecular formula C5H10 comprises 5 C, 10 H atoms.
Also known as: trans-2-Pentene · 反式2-戊烯
Category: organic chemicals
The CAS registry number of trans-2-Pentene is 646-04-8.
Molecular formula C5H10, molecular weight 70.13.
It is also registered under: trans-2-Pentene, 反式2-戊烯.
Category: Organic Chemicals.
Independent reference data for trans-2-Pentene (CAS 646-04-8), compiled from public chemistry databases.
| 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).
Source: PubChem / Wikidata; the batch COA governs where values differ.
Supplier: Jinan Shenghe Chemical Co., Ltd.
中文页面: 反式2-戊烯