Isobutane
From Wikipedia, the free encyclopedia
Isobutane | |
---|---|
General | |
Systematic name | Isobutane 2-Methylpropane |
Molecular formula | C4H10 |
SMILES | C(C)CC |
Molar mass | 58.08 g/mol |
Appearance | Colorless gas |
CAS number | [75-28-5] |
Properties | |
Density and phase | 2.51 g/l, gas (15 °C, 1 atm) |
Solubility in water | Insoluble |
Melting point | −159.6 °C (113.6 K) |
Boiling point | −11.7 °C (261.5 K) |
Hazards | |
MSDS | External MSDS |
EU classification | Highly flammable (F+) |
NFPA 704 | |
R-phrases | R12 |
S-phrases | S2, S9, S16 |
Flash point | flammable gas |
Autoignition temperature | 460 °C |
Explosive limits | 1.8–8.4% |
Supplementary data page | |
Structure and properties |
n, εr, etc. |
Thermodynamic data |
Phase behaviour Solid, liquid, gas |
Spectral data | UV, IR, NMR, MS |
Related compounds | |
Related alkanes | Isopentane Neopentane |
Related compounds | Butane |
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references |
Isobutane, also known as methylpropane or 2-methylpropane, is an alkane, isomeric with butane. Recent concerns with depletion of the ozone layer by freon gases have led to increased use of isobutane as a gas for refrigeration systems, especially in domestic refrigerators and freezers, and as a propellant in aerosol sprays. When used as a refrigerant or a propellant, isobutane is also known as R-600a. It is used as a feedstock in the petrochemical industry, for example in the synthesis of isooctane.[1]
Contents |
[edit] Nomenclature
Isobutane is the name recommended by the International Union of Pure and Applied Chemistry (IUPAC) in its 1993 Recommendations for the Nomenclature of Organic Chemistry.[2]
[edit] See also
[edit] Reference
- ^ Patent Watch, July 31, 2006.
- ^ Panico, R.; & Powell, W. H. (Eds.) (1994). A Guide to IUPAC Nomenclature of Organic Compounds 1993. Oxford: Blackwell Science. ISBN 0-632-03488-2.
[edit] External links
- IUPAC Nomenclature of Organic Chemistry (online version of the "Blue Book")
- Molview from bluerhinos.co.uk See Isobutane in 3D
- Data from Air Liquide
|
||
---|---|---|
Colours (E100-199) • Preservatives (E200-299) • Antioxidants & Acidity regulators (E300-399) • Thickeners, stabilisers & emulsifiers (E400-499) • pH regulators & anti-caking agents (E500-599) • Flavour enhancers (E600-699) • Miscellaneous (E900-999) • Additional chemicals (E1100-1599) | ||
|
||
Waxes (E900-909) • Synthetic glazes (E910-919) • Improving agents (E920-929) • Packaging gases (E930-949) • Sweeteners (E950-969) • Foaming agents (E990-999) | ||
|
||
Argon (E938) • Helium (E939) • Dichlorodifluoromethane (E940) • Nitrogen (E941) • Nitrous oxide (E942) • Butane (E943a) • Isobutane (E943b) • Propane (E944) • Oxygen (E948) • Hydrogen (E949) |