2-Methylbutane
SIGALD/59070 - puriss. p.a., ≥99.5% (GC)
Synonym: Isopentane
CAS Number: 78-78-4
Empirical Formula (Hill Notation): C5H12
Molecular Weight: 72.15
EC Number: 201-142-8
MDL Number: MFCD00009338
Linear Formula: CH3CH2CH(CH3)2
Product Type: Chemical
| assay | ≥99.5% (GC) |
| autoignition temp. | 788 °F |
| bp | 30 °C (lit.) |
| cation traces | Al: ≤0.5 mg/kg |
| Ba: ≤0.1 mg/kg | |
| Bi: ≤0.1 mg/kg | |
| Ca: ≤0.5 mg/kg | |
| Cd: ≤0.05 mg/kg | |
| Co: ≤0.02 mg/kg | |
| Cr: ≤0.02 mg/kg | |
| Cu: ≤0.02 mg/kg | |
| Fe: ≤0.1 mg/kg | |
| K: ≤0.5 mg/kg | |
| Li: ≤0.1 mg/kg | |
| Mg: ≤0.1 mg/kg | |
| Mn: ≤0.02 mg/kg | |
| Mo: ≤0.1 mg/kg | |
| Na: ≤0.5 mg/kg | |
| Ni: ≤0.02 mg/kg | |
| Pb: ≤0.1 mg/kg | |
| Sr: ≤0.1 mg/kg | |
| Zn: ≤0.1 mg/kg | |
| density | 0.62 g/mL at 25 °C (lit.) |
| evapn. residue | ≤0.001% |
| expl. lim. | 8.3 % |
| form | liquid |
| grade | puriss. p.a. |
| impurities | ≤0.05% water |
| InChI | 1S/C5H12/c1-4-5(2)3/h5H,4 |
| InChI key | QWTDNUCVQCZILF-UHFFFAOYSA |
| mp | -160 °C |
| Quality Level | 200  |
| refractive index | n |
| n |
|
| SMILES string | CCC(C)C |
| storage temp. | 2-8°C |
| technique(s) | GC/GC: suitable |
| vapor density | 2.6 (vs air) |
| vapor pressure | 11.17 psi ( 20 °C) |
| Application: | 2-Methylbutane may be used in the following studies: • As starting reagent for the synthesis of isoprene. • Preparation of C5 and C6 alkyl nitrates. |
| General description: | 2-Methylbutane (Isopentane) is a branched chain alkane. It undergoes bromination at 75°C to afford 2-bromo-2-methyl butane. Its Raman spectra in vapor and solid phases at low temperatures (-196°C) have been investigated. |
| Symbol |     GHS02,GHS07,GHS08,GHS09 |
| Signal word | Danger |
| Hazard statements | H224 - H304 - H336 - H411 |
| Precautionary statements | P210 - P233 - P273 - P301 + P310 - P331 - P403 + P233 |
| Hazard Codes | F+,Xn,N |
| Risk Statements | 12-51/53-65-66-67 |
| Safety Statements | 9-16-29-33-61-62 |
| RIDADR | UN1265 - class 3 - PG 1 - Pentanes |
| WGK Germany | WGK 2 |
| Flash Point(F) | -59.8 °F - closed cup |
| Flash Point(C) | -51 °C - closed cup |
| Supplemental Hazard Statements | EUH066 |
| Purity | ≥99.5% (GC) |
| bp | 30 °C (lit.) |
| mp | -160 °C |
| Density | 0.62 g/mL at 25 °C (lit.) |
| Refractive Index | n |
| Storage Temp. | 2-8°C; 2-8°C |
| UNSPSC | 12191502 |