O-Xylene: Difference between revisions
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| MeltingPtC = -24 |
| MeltingPtC = -24 |
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| BoilingPtC = 144.4 |
| BoilingPtC = 144.4 |
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| Solubility = |
| Solubility = 0.02% (20°C)<ref name=PGCH/> |
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| Solubility1 = very soluble |
| Solubility1 = very soluble |
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| Solvent1 = ethanol |
| Solvent1 = ethanol |
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| RefractIndex = 1.50545 |
| RefractIndex = 1.50545 |
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| Viscosity = 1.1049 c[[Poise|P]] at 0 °C<br>0.8102 c[[Poise|P]] at 20 °C |
| Viscosity = 1.1049 c[[Poise|P]] at 0 °C<br>0.8102 c[[Poise|P]] at 20 °C |
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| VaporPressure = 7 mmHg (20°C)<ref name=PGCH/> |
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| Section3 = {{Chembox Structure |
| Section3 = {{Chembox Structure |
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| PEL = TWA 100 ppm (435 mg/m<sup>3</sup>)<ref name=PGCH>{{PGCH|0668}}</ref> |
| PEL = TWA 100 ppm (435 mg/m<sup>3</sup>)<ref name=PGCH>{{PGCH|0668}}</ref> |
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| ExploLimits = 0.9%-6.7%<ref name=PGCH/> |
| ExploLimits = 0.9%-6.7%<ref name=PGCH/> |
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| IDLH = 900 ppm<ref name=PGCH/> |
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| REL = TWA 100 ppm (435 mg/m<sup>3</sup>) ST 150 ppm (655 mg/m<sup>3</sup>)<ref name=PGCH/> |
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| Section8 = {{Chembox Related |
| Section8 = {{Chembox Related |
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Revision as of 19:09, 26 May 2015
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| Identifiers | |||
|---|---|---|---|
3D model (JSmol)
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| ChEBI | |||
| ChEMBL | |||
| ChemSpider | |||
| DrugBank | |||
| ECHA InfoCard | 100.002.203 | ||
| KEGG | |||
| RTECS number |
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| UNII | |||
CompTox Dashboard (EPA)
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| Properties | |||
| C8H10 | |||
| Molar mass | 106.168 g·mol−1 | ||
| Appearance | Colorless liquid | ||
| Density | 0.88 g/ml | ||
| Melting point | −24 °C (−11 °F; 249 K) | ||
| Boiling point | 144.4 °C (291.9 °F; 417.5 K) | ||
| 0.02% (20°C)[1] | |||
| Solubility in ethanol | very soluble | ||
| Solubility in diethyl ether | very soluble | ||
| Vapor pressure | 7 mmHg (20°C)[1] | ||
Refractive index (nD)
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1.50545 | ||
| Viscosity | 1.1049 cP at 0 °C 0.8102 cP at 20 °C | ||
| Structure | |||
| 0.64 D [2] | |||
| Hazards | |||
| NFPA 704 (fire diamond) | |||
| Flash point | 32 °C (90 °F; 305 K) | ||
| Explosive limits | 0.9%-6.7%[1] | ||
| NIOSH (US health exposure limits): | |||
PEL (Permissible)
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TWA 100 ppm (435 mg/m3)[1] | ||
REL (Recommended)
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TWA 100 ppm (435 mg/m3) ST 150 ppm (655 mg/m3)[1] | ||
IDLH (Immediate danger)
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900 ppm[1] | ||
| Related compounds | |||
| Supplementary data page | |||
| O-Xylene (data page) | |||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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o-Xylene (ortho-xylene) is an aromatic hydrocarbon, based on benzene with two methyl substituents bonded to adjacent carbon atoms in the aromatic ring (the ortho configuration).
It is a constitutional isomer of m-xylene and p-xylene.
o-Xylene is largely used in the production of phthalic anhydride, and is generally extracted by distillation from a mixed xylene stream in a plant primarily designed for p-xylene production.
See also
References
- ^ a b c d e f NIOSH Pocket Guide to Chemical Hazards. "#0668". National Institute for Occupational Safety and Health (NIOSH).
- ^ Rudolph, H.D.; Walzer, K.; Krutzik, Irmhild (1973). "Microwave spectrum, barrier for methyl rotation, methyl conformation, and dipole moment of ortho-xylene". Journal of Molecular Spectroscopy. 47 (2): 314. doi:10.1016/0022-2852(73)90016-7.