108-38-3 - ChemicalBook India

CHEMICAL AND PHYSICAL PROPERTIES

Physical Description	M-xylene appears as a colorless watery liquid with a sweet odor. Less dense than water. Insoluble in water. Irritating vapor. (USCG, 1999)
Color/Form	Clear, colorless liquid
Odor	Sweet odor
Taste	Taste threshold: 0.3 ppm
Boiling Point	282.4 °F at 760 mmHg (NTP, 1992)
Melting Point	-54.2 °F (NTP, 1992)
Flash Point	85 °F (NTP, 1992)
Solubility	Insoluble (NTP, 1992)
Density	0.864 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 82.9 °F (NTP, 1992)
LogP	log Kow = 3.20
Henry's Law Constant	Henry's Law constant = 7.18X10-3 atm-cu m/mole at 25 °C
Stability/Shelf Life	Stable under recommended storage conditions.
Autoignition Temperature	982 °F (USCG, 1999)
Decomposition	Hazardous decomposition products formed under fire conditions - Carbon oxides.
Viscosity	0.581 mPa.s at 25 °C
Corrosivity	No reaction with common materials
Heat of Combustion	-17,554 Btu/lb = -9752.4 cal/g = -408.31X10+5 J/kg
Heat of Vaporization	42.65 kJ/mol at 25 °C; 35.66 kJ/mol at 139.07 °C
Surface Tension	28.47 dynes/cm at 25 °C
Ionization Potential	8.56 eV
Odor Threshold	Odor Threshold Low: 0.05 [mmHg] Odor threshold from CHRIS
Refractive Index	Index of refraction: 1.4973 at 20 °C/D
Relative Evaporation Rate	Evaporation rate: 9.2 (Ether = 1)
Kovats Retention Index	853.2 853.2 859.4 838 863 848.2 849 847 847 855.5 879.49 844.6 850.2 853.8 855.4 854 852.91 853.44 854 853.38 853.85 853 861 871 853.96 850.24 852.98 854.72 852 848.4 850.5 852.1 852.3 855.2 856.7 859 863 856.77 865.05 876 876 876 863.3 871.2 855.9 856.1 856.4 856.4 856.6 858 857 857 867 867 856 865.3 865.8 866.2 865.2 866 866 866 865 865 866 866 862 868 880 862 866 866 867 867 856.1 856.6 859.6 864 876 867 871 877 852 866.6 871.1 876.6 859 861 863 864 859 864 864 863 882 886 857.8 861 859 860 877 864 856.2 851 853 860 866 859.9 862.6 855 849 848 864 856.6 847.12 855.7 856 866 864 864.9 846.4 860 857 853.2 863.2 864.2 863 854 856 865 869 871 860 866 866 866 866 867 855 866 863 855 856 866 867 870 871 860 848 851 851 869 871 856 857 852 852 866 849 845 852 863 852 853 849 852 854 858 864 853 858 863 854 871 860 874 874 853.2 857.6 870
Other Experimental Properties	Ratio of specific heats of vapor (gas): 1.071
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 H319:Serious eye damage/eye 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 Å²
Heavy Atom Count	8
Formal Charge	0
Complexity	58.4
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

M-xylene appears as a colorless watery liquid with a sweet odor. The major use of M-xylene is in the production of isophthalic acid, which is used as a copolymerizing monomer to alter the properties of polyethylene terephthalate.