295450

2-Methylpropane

99%

• Synonym(s): Isobutane
• Linear Formula: (CH₃)₃CH
• CAS Number: 75-28-5
• Molecular Weight: 58.12
• Beilstein/REAXYS Number: 1730720
• EC Number: 200-857-2
• MDL number: MFCD00008926
• UNSPSC Code: 12142100
• PubChem Substance ID: 24857785
• NACRES: NA.22

Properties

• vapor density: 2.01 (21 °C, vs air)
• vapor pressure: 72.2 psi ( 37.7 °C)
• assay: 99%
• autoignition temp.: 860 °F
• expl. lim.: 8.3 %
• bp: −12 °C (lit.)
• mp: −160 °C (lit.)
• density: 2.064 g/mL at 25 °C (lit.)
• SMILES string: CC(C)C
• InChI: 1S/C4H10/c1-4(2)3/h4H,1-3H3
• InChI key: NNPPMTNAJDCUHE-UHFFFAOYSA-N

Description

Application

2-Methylpropane can be used as a starting material to prepare:

• Isobutylene by catalytic dehydrogenation using various catalysts.
• Isopropyl methyl ketone by formylation reaction with carbon monoxide in the presence of super acid catalyst.
• tert-Butylhydroperoxide (TBHP) by oxidation.

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

Legal Information

Aldrich is a registered trademark of Sigma-Aldrich Co. LLC

Sure/Pac is a trademark of Sigma-Aldrich Co. LLC

Safety Information

• pictograms: GHS02,GHS04
• signalword: Danger
• hcodes: H220,H280
• pcodes: P210 - P377 - P381 - P410 + P403
• Hazard Classifications: Flam. Gas 1A - Press. Gas Liquefied gas
• Storage Class: 2A - Gases
• wgk_germany: nwg
• flash_point_f: -117.4 °F - closed cup
• flash_point_c: -83 °C - closed cup
• ppe: Eyeshields, Faceshields, Gloves, multi-purpose combination respirator cartridge (US)