N-hexane
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| Names | |
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IUPAC name
Hexane
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| Other names
Sextane
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| Identifiers | |
110-54-3 
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| 3D model (Jmol) | Interactive image |
| 1730733 | |
| ChEBI |
CHEBI:29021
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| ChEMBL |
ChEMBL15939
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| ChemSpider |
7767
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| DrugBank |
DB02764
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| ECHA InfoCard | 100.003.435 |
| EC Number | 203-777-6 |
| 1985 | |
| KEGG |
C11271
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| MeSH | n-hexane |
| PubChem | 8058 |
| RTECS number | MN9275000 |
| UNII |
2DDG612ED8
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| UN number | 1208 |
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| Properties | |
| C6H14 | |
| Molar mass | 86.18 g·mol−1 |
| Appearance | Colorless liquid |
| Odor | Petrolic |
| Density | 0.6548 g mL−1 |
| Melting point | −96 to −94 °C; −141 to −137 °F; 177 to 179 K |
| Boiling point | 68.5 to 69.1 °C; 155.2 to 156.3 °F; 341.6 to 342.2 K |
| 9.5 mg L−1 | |
| log P | 3.764 |
| Vapor pressure | 17.60 kPa (at 20.0 °C) |
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Henry's law
constant (kH) |
7.6 nmol Pa−1 kg−1 |
| UV-vis (λmax) | 200 nm |
| -74.6·10−6 cm3/mol | |
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Refractive index (nD)
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1.375 |
| Viscosity | 0.3 mPa · s |
| Thermochemistry | |
| 265.2 J K−1 mol−1 | |
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Std molar
entropy (S |
296.06 J K−1 mol−1 |
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Std enthalpy of
formation (ΔfH |
−199.4–−198.0 kJ mol−1 |
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Std enthalpy of
combustion (ΔcH |
−4180–−4140 kJ mol−1 |
| Hazards | |
| Safety data sheet | See: data page |
| GHS pictograms |
   
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| GHS signal word | DANGER |
| H225, H304, H315, H336, H373, H411 | |
| P210, P261, P273, P281, P301+310, P331 | |
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EU classification (DSD)
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 F  Xn  N
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| R-phrases | R11, R38, R48/20, R51/53, R62, R65, R67 |
| S-phrases | (S2), S16, S29, S33, S36/37 |
| NFPA 704 | |
| Flash point | −26.0 °C (−14.8 °F; 247.2 K) |
| 234.0 °C (453.2 °F; 507.1 K) | |
| Explosive limits | 1.2–7.7% |
| Lethal dose or concentration (LD, LC): | |
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LD50 (median dose)
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25 g kg−1(oral, rat) 28710 mg/kg (rat, oral) |
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LDLo (lowest published)
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56137 mg/kg (rat, oral) |
| US health exposure limits (NIOSH): | |
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PEL (Permissible)
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TWA 500 ppm (1800 mg/m3) |
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REL (Recommended)
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TWA 50 ppm (180 mg/m3) |
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IDLH (Immediate danger)
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1100 ppm |
| Related compounds | |
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Related alkanes
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| Supplementary data page | |
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Refractive index (n), Dielectric constant (εr), etc. |
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Thermodynamic
data |
Phase behaviour solid–liquid–gas |
| UV, IR, NMR, MS | |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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 (what is  ?) |
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| Infobox references | |
Hexane /ˈhɛkseɪn/ is an alkane of six carbon atoms, with the chemical formula C6H14.
The term may refer to any of the five structural isomers with that formula, or to a mixture of them. In IUPAC nomenclature, however, hexane is the unbranched isomer (n-hexane); the other four isomers are named as methylated derivatives of pentane and butane. IUPAC also uses the term as the root of many compounds with a linear six-carbon backbone, such as 2-methylhexane (C7H16), which is also called "isoheptane".
Hexanes are significant constituents of gasoline. They are all colorless liquids at room temperature, odorless when pure, with boiling points between 50 and 70 °C. They are widely used as cheap, relatively safe, largely unreactive, and easily evaporated non-polar solvents.
In industry, hexanes are used in the formulation of glues for shoes, leather products, and roofing. They are also used to extract cooking oils (such as canola oil or soy oil) from seeds, for cleansing and degreasing a variety of items, and in textile manufacturing. They are commonly used in food based soybean oil extraction in the United States, and are potentially present as contaminants in all soy food products in which the technique is used; the lack of regulation by the FDA of this contaminant is a matter of some controversy.
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