P-XYLENE
- CAS No.
- 106-42-3
- Chemical Name:
- P-XYLENE
- Synonyms
- PARA-XYLENE;1,4-DIMETHYLBENZENE;Benzene, 1,4-dimethyl-;1,4-Xylene;4-xylene;p-Xylene (1.4-;p-Xylol;4-Methyltoluene;p-Dimethylbenzene;p-Xylene, For Gas Chromatography
- CBNumber:
- CB2136488
- Molecular Formula:
- C8H10
- Molecular Weight:
- 106.17
- MOL File:
- 106-42-3.mol
- MSDS File:
- SDS
- Modify Date:
- 2023/12/26 17:07:23
| 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 |
n |
| Flash point | 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. |
| explosive limit | 1.1-7%(V) |
| Odor Threshold | 0.058ppm |
| Water Solubility | Miscible with alcohol, ether, acetone, benzene and chloroform. Immiscible with water. |
| λmax |
λ: 294 nm Amax: 1.00 λ: 320 nm Amax: 0.10 λ: 350 nm Amax: 0.05 λ: 380-400 nm Amax: 0.01 |
| 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) |
| Dielectric constant | 2.6（20℃） |
| 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). |
| Stability | Stable. Incompatible with oxidizing agents. Hygroscopic. Flammable. |
| InChIKey | URLKBWYHVLBVBO-UHFFFAOYSA-N |
| LogP | 3.16 at 20℃ |
| CAS DataBase Reference | 106-42-3(CAS DataBase Reference) |
| EPA Substance Registry System | p-Xylene (106-42-3) |
SAFETY
Risk and Safety Statements
| 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 | ZE2625000 | |||||||||
| Autoignition Temperature | 984 °F | |||||||||
| TSCA | Yes | |||||||||
| HazardClass | 3 | |||||||||
| PackingGroup | III | |||||||||
| HS Code | 29024300 | |||||||||
| Toxicity | LD50 orally in Rabbit: 3910 mg/kg | |||||||||
| NFPA 704 |
|
P-XYLENE price More Price(28)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich(India) | PHR1314 | p-Xylene Pharmaceutical Secondary Standard; Certified Reference Material | 106-42-3 | 1G | ₹6900 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 95682 | p-Xylene puriss. p.a., ≥99.0% (GC) | 106-42-3 | 1L | ₹12010 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 95682 | p-Xylene puriss. p.a., ≥99.0% (GC) | 106-42-3 | 2.5L | ₹15780 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 95680 | p-Xylene analytical standard | 106-42-3 | 5ML | ₹10980 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 8.08691 | p-Xylene for synthesis | 106-42-3 | 1L | ₹7117.12 | 2022-06-14 | Buy |
P-XYLENE Chemical Properties,Uses,Production
Chemical Properties
colourless liquid
Physical properties
Clear, colorless, watery liquid with a sweet odor. Odor threshold concentrations reported in air were 47 ppbv by Leonardos et al. (1969) and 58 ppbv by Nagata and Takeuchi (1990).
Uses
p-Xylene is used as a precursor in the production of benzoic, isophthalic, tetraphillic acids and dimethyle esters, which are used in the manufacture of polyester. It acts as an intermediate in plastic and rubber products.
Definition
ChEBI: A xylene with methyl groups at positions 1 and 4.
Production Methods
Pure p-xylene can be obtained from a mixture of o- and p-xylene by sulfonation and subsequent removal of water-soluble o-xylenesulfonic acid.
General Description
A colorless watery liquid with a sweet odor. Less dense than water. Insoluble in water. Irritating vapor. Freezing point is 56°F.
Air & Water Reactions
Highly flammable. Insoluble in water.
Reactivity Profile
P-XYLENE may react with oxidizing materials. . Acetic acid forms explosive mixtures with P-XYLENE and air (Shraer, B.I. 1970. Khim. Prom. 46(10):747-750.).
Health Hazard
Vapors cause headache and dizziness. Liquid irritates eyes and skin. If taken into lungs, causes severe coughing, distress, and rapidly developing pulmonary edema. If ingested, causes nausea, vomiting, cramps, headache, and coma. Can be fatal. Kidney and liver damage can occur.
Fire Hazard
Behavior in Fire: Vapor is heavier than air and may travel considerable distance to a source of ignition and flash back.
Chemical Reactivity
Reactivity with Water No reaction; Reactivity with Common Materials: No reaction; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent; Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.
Safety Profile
Moderately toxic by intraperitoneal route. Mildly toxic by ingestion and inhalation. An experimental teratogen. Experimental reproductive effects. May be narcotic in hgh concentrations. Chronic toxicity not established, but is less toxic than benzene. A very dangerous fire hazard when exposed to heat or flame; can react with oxidzing materials. Explosive in the form of vapor when exposed to heat or flame. To fight fire, use foam, CO2, dry chemical. Potentially explosive reaction with acetic acid + air, 1,3-dichloro-5,5-dimethyl-2,4- imidazolidinhone, nitric acid + pressure. When heated to decomposition it emits acrid smoke and irritating fumes. See also other xylene entries.
Purification Methods
The general purification methods listed for xylene above are applicable. p-Xylene can readily be separated from its isomers by crystallisation from such solvents as MeOH, EtOH, isopropanol, acetone, butanone, toluene, pentane or pentene. It can be further purified by fractional crystallisation by partial freezing, and stored over sodium wire or molecular sieves Linde type 4A. [Stokes & French J Chem Soc, Faraday Trans 1 76 537 1980, Beilstein 5 H 382, 5 I 185, 5 II 296, 5 III 845, 5 IV 951.]
P-XYLENE Preparation Products And Raw materials
Raw materials
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chevron_right| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| JSK Chemicals | +919879767970 | Gujarat, India | 3756 | 58 | Inquiry |
| Mangalore Refinery and Petrochemicals Ltd | +91-8022642230 +91-8022642239 | Karnataka, India | 7 | 58 | Inquiry |
| Reliance Industries Limited | +91-2235555000 +91-2235555000 | Maharashtra, India | 15 | 58 | Inquiry |
| ASM Organics | 91-9866122393 | Andhra Pradesh, India | 1188 | 58 | Inquiry |
| Indian Commercial Company Pvt. Ltd. (ICC) | 91-22-22854565 | Maharashtra, India | 38 | 58 | Inquiry |
| CLEARSYNTH LABS LTD. | +91-22-45045900 | Hyderabad, India | 6351 | 58 | Inquiry |
| Maas Pharma Chemicals | +91-9958666224 | Delhi, India | 1607 | 58 | Inquiry |
| A.J Chemicals | 91-9810153283 | New Delhi, India | 6124 | 58 | Inquiry |
| INOX Air Products Pvt. Ltd. | 91-22-41252348 | Maharashtra, India | 53 | 58 | Inquiry |
| Sisco Research Laboratories Pvt. Ltd. | +91-22-4268 5800 | Mumbai, India | 4317 | 58 | Inquiry |
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