106-42-3
Product Name:
P-XYLENE
Formula:
C8H10
Synonyms:
p-Xylene;1;1,4-Dimethylbenzene;Dimethylbenzol;p-Xylene
Inquiry
CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | P-xylene appears as a colorless watery liquid with a sweet odor. Less dense than water. Insoluble in water. Irritating vapor. Freezing point is 56 °F. (USCG, 1999) |
|---|---|
| Color/Form | Colorless plates or prisms at low temp |
| Odor | Sweet |
| Boiling Point | 280.9 °F at 760 mmHg (NTP, 1992) |
| Melting Point | 55.9 °F (NTP, 1992) |
| Flash Point | 81 °F (NTP, 1992) |
| Solubility | Insoluble. (NTP, 1992) |
| Density | 0.861 at 68 °F (USCG, 1999) - Less dense than water; will float |
| Vapor Density | 3.66 (NTP, 1992) - Heavier than air; will sink (Relative to Air) |
| Vapor Pressure | 10 mmHg at 81.1 °F (NTP, 1992) |
| LogP | log Kow = 3.15 |
| Henry's Law Constant | Henry's Law constant = 6.90X10-3 atm-cu m/mol at 25 °C |
| Stability/Shelf Life | Stable under recommended storage conditions. |
| Autoignition Temperature | 984 °F (USCG, 1999) |
| Decomposition | When heated to decomposition it emits acrid smoke and irritating fumes. |
| Viscosity | 0.603 mPa.s at 25 °C |
| Corrosivity | No reaction with common materials |
| Heat of Combustion | -17,559 Btu/lb = -9754.7 cal/g = -408.41X10+5 J/kg |
| Heat of Vaporization | 42.40 kJ/mol at 35 °C; 35.67 kJ/mol at 138.23 °C |
| Surface Tension | 28.01 dynes/cm at 25 °C |
| Ionization Potential | 8.44 eV |
| Odor Threshold | Odor Threshold Low: 0.05 [mmHg] Odor threshold from CHRIS |
| Refractive Index | Index of refraction: 1.49575 at 20 °C/D |
| Relative Evaporation Rate | Evaporation rate: 9.9 (ether= 1) |
| Kovats Retention Index | 862 855 860.4 847 863 849.3 852 856.3 879.49 845.7 851.3 855.5 855.4 854 853.96 854.41 855 854.75 854.85 855 875 855.12 854.3 856 859.7 853.7 855.9 859.8 861.8 864.7 860.8 866.94 842 851.35 854.04 855.8 862 863 864 865 867 871 853 848.4 850.5 852.1 852.3 855.2 856.7 859 863 874.28 857.7 867.5 866 876 876 876 863.3 871.2 856.9 857 857.1 857.4 857.6 859 857 857 867 867 856 866.8 871.3 865.3 865.8 866.2 866.7 866 866 854.2 859 866 879 881 871 866 866 866 866 863 880 863 866 866 868 868 857.1 857.6 860.8 868 864 876 868 872 878 853 867.7 872.5 878.3 859 861 863 864 860 864 864 860.3 882 886 857.8 862 858 861 853 854 853 853 872 864 856.2 856 852 860 861 866 855.6 859.3 866.5 869.4 856 849 848 856.6 848.46 856.7 857 867 864 864.9 857.41 860 857 854.3 862 864.2 864 844 863 870 863 875 861 867 855 866 863 855 854 859 866 868 870 872 860 849 852 851 870 870 848 859 853 853 865.6 870.7 871.3 871.8 847.7 853.8 854 854.9 855.1 866 860 861 852 846 853 860 851 852 858 854 857 860 854 870 839.1 874 870 |
| Other Experimental Properties | Liquid-water interfacial tension: 28.3 dynes/cm = 0.0283 N/m at 20 °C |
| Chemical Classes | Solvents -> Aromatic Solvents |
SAFETY INFORMATION
| Signal word | Danger |
|---|---|
| Pictogram(s) |
 Flame Flammables GHS02  Exclamation Mark Irritant GHS07  Health Hazard GHS08 |
| GHS Hazard Statements |
H226:Flammable liquids H304:Aspiration hazard H315:Skin corrosion/irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation H412:Hazardous to the aquatic environment, long-term hazard |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P273:Avoid release to the environment. P280:Wear protective gloves/protective clothing/eye protection/face protection. P331:Do NOT induce vomiting. P301+P310:IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. |
COMPUTED DESCRIPTORS
| Molecular Weight | 106.16 g/mol |
|---|---|
| XLogP3 | 3.2 |
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 0 |
| Rotatable Bond Count | 0 |
| Exact Mass | 106.078250319 g/mol |
| Monoisotopic Mass | 106.078250319 g/mol |
| Topological Polar Surface Area | 0 Ų |
| Heavy Atom Count | 8 |
| Formal Charge | 0 |
| Complexity | 48.4 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| Covalently-Bonded Unit Count | 1 |
| Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
description
P-xylene appears as a colorless watery liquid with a sweet odor. Less dense than water. Insoluble in water. Irritating vapor. Freezing point is 56 °F. (USCG, 1999)