cis-2-Butene
ALDRICH/400890 - ≥99%
Synonym: (2Z)-2-Butene; (Z)-2-Butene; Z-Butene; cis-
CAS Number: 590-18-1
Empirical Formula (Hill Notation): C4H8
Molecular Weight: 56.11
EC Number: 209-673-7
MDL Number: MFCD00009294
Linear Formula: CH3CH=CHCH3
Product Type: Chemical
| assay | ≥99% |
| autoignition temp. | 615 °F |
| bp | 3.7 °C (lit.) |
| expl. lim. | 9.7 % |
| form | gas |
| InChI | 1S/C4H8/c1-3-4-2/h3-4H,1- |
| InChI key | IAQRGUVFOMOMEM-ARJAWSKDSA |
| mp | −139 °C (lit.) |
| SMILES string | [H]C(C)=C(/[H])C |
| vapor density | 2 (vs air) |
| vapor pressure | 1414 mmHg ( 21 °C) |
| Application: | cis-2-Butene is an unsaturated olefinic hydrocarbon used as a precursor in the polymerization of gasoline. It is also used to synthesize butadiene and other aliphatic C4/C5 organic molecules. It is also employed as a cross-linking agent. |
| Legal Information: | Aldrich is a registered trademark of Sigma-Aldrich Co. LLC |
| Legal Information: | Sure/Pac is a trademark of Sigma-Aldrich Co. LLC |
| Packaging: | 25, 100 g in Sure/Pac™ |
| Packaging: | Supplied in a Sure/Pac™ cylinder and has a brass needle valve with a male 1/4" NPTF outlet thread installed. Before using the cylinder, ensure that the valve is closed, then remove the galvanized steel hex cap that seals the outlet valve. Compatible with the following: • Aldrich® Sure/Pac™ station for liquefied gases Z566446  • PTFE Sealing tape Z104388 or Z221880 • Brass hose adapter Z146811 • Aldrich® mini gas regulator Z513539 |
| Symbol |   GHS02,GHS04 |
| Signal word | Danger |
| Hazard statements | H220 - H280 |
| Precautionary statements | P210 - P410 + P403 |
| Hazard Codes | F+ |
| Risk Statements | 12 |
| Safety Statements | 9-16-33 |
| RIDADR | UN1012 - class 2 - Butylene |
| WGK Germany | WGK 3 |
| Flash Point(F) | 10.4 °F - closed cup |
| Flash Point(C) | -12 °C - closed cup |
| Purity | ≥99% |
| bp | 3.7 °C (lit.) |
| mp | −139 °C (lit.) |
| UNSPSC | 12142100 |