A8435412
1,2-xylene , StandardforGC,≥99%(GC) , 95-47-6
Synonym(s):
o-Xylene;1,2-Dimethylbenzene;Dimethylbenzenes, Dimethylbenzene;Xylene mixture of isomers
CAS NO.：95-47-6
Empirical Formula: C8H10
Molecular Weight: 106.17
MDL number: MFCD00008519
EINECS: 202-422-2
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | -26--23 °C (lit.) |
| Boiling point: | 143-145 °C (lit.) |
| Density | 0.879 g/mL at 20 °C (lit.) |
| vapor density | 3.7 (vs air) |
| vapor pressure | <0.1 atm ( 21.1 °C) |
| refractive index | n |
| Flash point: | 90 °F |
| storage temp. | Store below +30°C. |
| solubility | water: partially soluble0.1705 g/L at 25°C |
| form | Solid or Crystalline Powder |
| pka | >15 (Christensen et al., 1975) |
| color | Yellow to beige |
| Odor | Benzene-like; characteristic aromatic. |
| explosive limit | 1.0-7.6%(V) |
| Odor Threshold | 0.38ppm |
| Water Solubility | Sparingly soluble in water. (0.2g/L) |
| λmax | λ: 288 nm Amax: 1.00 λ: 300 nm Amax: 0.40 λ: 325 nm Amax: 0.05 λ: 350-400 nm Amax: 0.01 |
| Merck | 14,10081 |
| BRN | 1815558 |
| Henry's Law Constant | 14.0 at 45.00 °C, 16.4 at 50.00 °C, 19.0 at 55.00 °C, 21.3 at 60.00 °C, 26.3 at 70.00 °C (static headspace-GC, Park et al., 2004) |
| Exposure limits | NIOSH REL: 100 ppm (435 mg/m3), STEL 150 ppm (655 mg/m3), IDLH 900
ppm; OSHA PEL: TWA 100 ppm; ACGIH TLV: TWA 100 ppm, STEL 150 ppm (adopted). |
| Dielectric constant | 2.5699999999999998 |
| Stability: | Stable. Incompatible with oxidizing agents. Flammable. Hygroscopic. |
| InChIKey | CTQNGGLPUBDAKN-UHFFFAOYSA-N |
| LogP | 3.16 at 20℃ |
| CAS DataBase Reference | 95-47-6(CAS DataBase Reference) |
| NIST Chemistry Reference | Benzene, 1,2-dimethyl-(95-47-6) |
| EPA Substance Registry System | o-Xylene (95-47-6) |
Description and Uses
Preparation of phthalic acid, phthalic anhydride, terephthalic acid, isophthalic acid; solvent for alkyd resins, lacquers, enamels, rubber cements; manufacture of dyes, pharmaceuticals, and insecticides; motor fuels.
Safety
| Symbol(GHS) |    GHS02,GHS07,GHS08 |
| Signal word | Danger |
| Hazard statements | H226-H304-H312+H332-H315-H335-H412 |
| Precautionary statements | P210-P273-P280-P301+P310-P303+P361+P353-P331 |
| Hazard Codes | Xn,T,F |
| Risk Statements | 10-20/21-38-39/23/24/25-23/24/25-11 |
| Safety Statements | 25-45-36/37-16-7 |
| OEB | A |
| OEL | TWA: 100 ppm (435 mg/m3), STEL: 150 ppm (655 mg/m3) |
| RIDADR | UN 1307 3/PG 3 |
| WGK Germany | 2 |
| RTECS | ZE2450000 |
| Autoignition Temperature | 867 °F |
| TSCA | Yes |
| HazardClass | 3 |
| PackingGroup | II |
| HS Code | 29024100 |
| Hazardous Substances Data | 95-47-6(Hazardous Substances Data) |
| Toxicity | Acute oral LD50 in rats is approximately 5 g/kg (quoted, RTECS, 1992). |
| IDLA | 900 ppm |
