p-Xylene CAS#106-42-3
CAS Number: 106-42-3
Chemical Formula: C8H10
Synonyms:
Appearance: Colorless liquid
HS Code: 29024300
MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)
Products Description of p-Xylene CAS#106-42-3
p-Xylene (paraxylene) is a core organic chemical raw material, standing as the key precursor for polyester—via PTA, DMT, and PET synthesis.
It also serves as a high-performance solvent and feedstock for pharmaceuticals, fragrances, inks, and other industries.
As the world’s largest producer and consumer of p-xylene, China boasts mature industrial processes: using toluene and C9 aromatics as raw materials, it’s manufactured through advanced technologies like toluene disproportionation, xylene isomerization, and adsorption separation
Parameters
Melting point | 12-13 °C (lit.) |
Boiling point | 138 °C (lit.) |
density | 0.861 g/mL at 20 °C (lit.) |
vapor density | 3.7 (vs air) |
vapor pressure | 9 mm Hg ( 20 °C) |
refractive index | n20/D 1.495(lit.) |
Fp | 77 °F |
storage temp. | Store at +5°C to +30°C. |
solubility | water: soluble0.2g/L |
form | Liquid |
pka | >15 (Christensen et al., 1975) |
color | Colorless |
Relative polarity | 0.074 |
Odor | Like benzene; characteristic aromatic. |
Odor Threshold | 0.058ppm |
explosive limit | 1.1-7%(V) |
Water Solubility | Miscible with alcohol, ether, acetone, benzene and chloroform. Immiscible with water. |
λmax | λ: 294 nm Amax: 1.00 |
Merck | 14,10081 |
BRN | 1901563 |
Henry's Law Constant | 16.1 at 45.00 °C, 18.6 at 50.00 °C, 20.3 at 55.00 °C, 23.4 at 60.00 °C, 30.5 at 70.00 °C (static headspace-GC, Park et al., 2004) |
Exposure limits | TLV-TWA100 ppm (～434 mg/m3) (ACGIH, MSHA, and OSHA); STEL 150 ppm (～651 mg/m3) (ACGIH); ceiling 200 ppm/ 10 min (NIOSH); IDLH 1000 ppm (NIOSH). |
Dielectric constant | 2.6（20℃） |
Stability: | Stable. Incompatible with oxidizing agents. Hygroscopic. Flammable. |
InChIKey | URLKBWYHVLBVBO-UHFFFAOYSA-N |
LogP | 3.16 at 20℃ |
Surface tension | 28.11mN/m at 298.15K |
CAS DataBase Reference | 106-42-3(CAS DataBase Reference) |
EPA Substance Registry System | p-Xylene (106-42-3) |
Safety Information
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 |
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 | ZE2625000 |
Autoignition Temperature | 984 °F |
TSCA | Yes |
HazardClass | 3 |
PackingGroup | III |
HS Code | 29024300 |
Hazardous Substances Data | 106-42-3(Hazardous Substances Data) |
Toxicity | LD50 orally in Rabbit: 3910 mg/kg |
Product Application of p-Xylene CAS#106-42-3
Solvents for rubber and coatings, plus aviation fuel additives
Factory and Equipment Show
Fast delivery time
Inventory 2-3 working days New production 7-10 working days
