m-Xylene , >99.0%(GC) , 108-38-3
Synonym(s):
m-Xylene;1,3-Dimethylbenzene;m-Xylene
CAS NO.：108-38-3
Empirical Formula: C8H10
Molecular Weight: 106.17
MDL number: MFCD00008536
EINECS: 203-576-3
PRODUCT Properties
| Melting point: | -48 °C (lit.) |
| Boiling point: | 138-139 °C (lit.) |
| Density | 0.868 g/mL at 25 °C (lit.) |
| vapor density | 3.7 (vs air) |
| vapor pressure | 16 mm Hg ( 37.7 °C) |
| refractive index | n |
| Flash point: | 77 °F |
| storage temp. | 2-8°C |
| solubility | Miscible with many organic solvents, including alcohol and ether |
| pka | >15 (Christensen et al., 1975) |
| form | Liquid |
| color | Colorless |
| Odor | Like benzene; characteristic aromatic. |
| Odor Threshold | 0.041ppm |
| explosive limit | 1.1-7%(V) |
| Water Solubility | Miscible with organic solvents. Immiscible with water. |
| Thermal Conductivity | 0.1244 W/(m·K) at 25 ℃ |
| Merck | 14,10081 |
| BRN | 605441 |
| Henry's Law Constant | 14.80 at 45.00 °C, 17.26.4 at 50.00 °C, 19.90 at 55.00 °C, 23.01.3 at 60.00 °C, 27.46.3 at 70.00 °C
(static headspace-GC, Park et al., 2004) |
| Exposure limits | ACGIH TLV-TWA:20 ppm;TLV-STEL:150 ppm (adopted) OSHA PEL-TWA:100 ppm NIOSH REL-TWA:100 ppm (435 mg/m3);REL-STEL:150 ppm (655 mg/m3);IDLH:900 ppm |
| Dielectric constant | 2.3999999999999999 |
| Cosmetics Ingredients Functions | FRAGRANCE PERFUMING SOLVENT |
| InChI | 1S/C8H10/c1-7-4-3-5-8(2)6-7/h3-6H,1-2H3 |
| InChIKey | IVSZLXZYQVIEFR-UHFFFAOYSA-N |
| SMILES | Cc1cccc(C)c1 |
| LogP | 3.16 at 20℃ |
| Surface tension | 28.47mN/m at 298.15K |
| CAS DataBase Reference | 108-38-3(CAS DataBase Reference) |
| NIST Chemistry Reference | Benzene, 1,3-dimethyl-(108-38-3) |
| EPA Substance Registry System | m-Xylene (108-38-3) |
| ECETOC JACC REPORT | m-Xylene (108-38-3) |
Description and Uses
Xylene exists in three isomeric forms, ortho-,meta-, and para-xylene. Commercial xylene is a mixture ofthese three isomers and may also contain ethylbenzene aswell as small amounts of toluene, trimethylbenzene, phenol,thiophene, pyridine, and other nonaromatic hydrocarbons.m-Xylene is predominant in commercial xylene. The physical properties of the three isomers are as follows:Isomer MeltingPoint(℃)BoilingPoint(℃)FlashPoint(℃)LowerExpl.(%)UpperExpl.(%)AutoTemp.(℃)ortho- -25 144 32 0.9 6.7 463meta- -48 139 27 1.1 7.0 527para- 13 138 27 1.1 7.0 528
Meta-Xylene is used for the production of isophthalic acid, of agriculture chemicals as pharmaceuticals. It finds applications in paint and varnish removers and aerosol paint concentrates. Product Data Sheet
Safety
| Symbol(GHS) |    GHS02,GHS07,GHS08 |
| Signal word | Danger |
| Hazard statements | H332-H303-H315-H319-H370-H372-H336-H304-H401-H412-H226 |
| Precautionary statements | P501-P273-P260-P270-P240-P210-P233-P243-P241-P242-P271-P264-P280-P370+P378-P331-P337+P313-P305+P351+P338-P308+P311-P362+P364-P303+P361+P353-P332+P313-P301+P310-P304+P340+P312-P403+P233-P403+P235-P405 |
| target organs | Respiratory system |
| Hazard Codes | Xn,T,F |
| Risk Statements | 10-20/21-38-39/23/24/25-23/24/25-11-36/38 |
| Safety Statements | 25-45-36/37-16-7 |
| RIDADR | UN 1307 3/PG 3 |
| OEB | A |
| OEL | TWA: 100 ppm (435 mg/m3), STEL: 150 ppm (655 mg/m3) |
| WGK Germany | 2 |
| RTECS | ZE2275000 |
| Autoignition Temperature | 982 °F |
| TSCA | TSCA listed |
| HazardClass | 3 |
| PackingGroup | II |
| HS Code | 29024200 |
| Storage Class | 3 - Flammable liquids |
| Hazard Classifications | Acute Tox. 4 Dermal Acute Tox. 4 Inhalation Aquatic Chronic 3 Asp. Tox. 1 Eye Irrit. 2 Flam. Liq. 3 Skin Irrit. 2 STOT SE 3 |
| Hazardous Substances Data | 108-38-3(Hazardous Substances Data) |
| Toxicity | LD50 orally in rats: 7.71 ml/kg (Smyth) |
| REACH Registrations | Active |
