Xylene , AR, 99%(diopenne -like structure+athylene) , 1330-20-7
Synonym(s):
Xylenes in dimethyl sulfoxide;Xylenes solution
CAS NO.：1330-20-7
Empirical Formula: C8H10
Molecular Weight: 106.17
MDL number: MFCD00077264
EINECS: 215-535-7
PRODUCT Properties
| Melting point: | -34 °C |
| Boiling point: | 137-140 °C (lit.) |
| Density | 0.86 g/mL at 25 °C (lit.) |
| vapor density | 3.7 (vs air) |
| vapor pressure | 18 mm Hg ( 37.7 °C) |
| refractive index | n |
| Flash point: | 77 °F(lit.) |
| storage temp. | Flammables area |
| solubility | Chloroform (Soluble), Methanol (Slightly) |
| form | Liquid |
| color | APHA: ≤10 |
| Odor | char. sweet odor |
| explosive limit | 7% |
| Water Solubility | <0.1 g/L (20 ºC) |
| Merck | 14,10081 |
| BRN | 1901563 |
| Exposure limits | ACGIH: TWA 100 ppm; STEL 150 ppm OSHA: TWA 100 ppm(435 mg/m3) |
| Dielectric constant | 10.0（Ambient） |
| Stability: | Volatile, flammable and its vapors form explosive mixtures with air at room temperature. |
| InChIKey | KAKOUNRRKSHVJO-UHFFFAOYSA-N |
| LogP | 3.16 at 20℃ |
Description and Uses
Xylene is used as a solvent. In this application, the mixture of isomers is often referred to
as xylenes or xylol. Solvent xylene often contains a small percentage of ethylbenzene. Like
the individual isomers, the mixture is colourless, sweet smelling, and highly flammable.
Application of xylene is extensive and includes, but is not limited to, printing, rubber, and
leather industries.
Similarly, it is used as a cleaning agent for steel and silicon wafers. In the petroleum
industry, xylene is also a frequent component of paraffin solvents, used when the tubing
becomes clogged with paraffin wax. Xylene is incompatible with strong oxidisers and is
known to cause fires and explosions. There are three forms of xylene in which the methyl
groups vary on the benzene ring: (i) meta-xylene, (ii) ortho-xylene, and (iii) para-xylene.
These forms are referred to as isomers. Xylene is a colourless, sweet-smelling liquid.
Xylene occurs naturally in petroleum and coal tar. Chemical industries produce xylene
from petroleum. It is also used as a cleaning agent and a thinner for paint and in paints,
in glues, in printing inks, and in varnishes. Xylene evaporates quickly from the soil and
surface water into the air.
Aviation gasoline; protective coatings; solvent for alkyd resins, lacquers, enamels, rubber cements; synthesis of organic chemicals.
Safety
| Symbol(GHS) |    GHS02,GHS07,GHS08 |
| Signal word | Danger |
| Hazard statements | H226-H304-H312+H332-H315-H319-H335-H373-H412 |
| Precautionary statements | P210-P273-P280-P301+P310-P303+P361+P353-P331 |
| Hazard Codes | Xn,F |
| Risk Statements | 10-20/21-38-36/38-65-48/20 |
| Safety Statements | 25-36/37-62 |
| OEB | A |
| OEL | TWA: 100.0 ppm; 435.0 mg/m3, STEL: 150.0 ppm; 655.0 mg/m3 |
| RIDADR | UN 1307 3/PG 3 |
| WGK Germany | 2 |
| RTECS | ZE2100000 |
| Autoignition Temperature | 867 °F |
| TSCA | Yes |
| HazardClass | 3 |
| PackingGroup | II |
| HS Code | 29024400 |
| Toxicity | LD50 oral in rat: 4300mg/kg |
