Mesitylene
- CAS No.
- 108-67-8
- Chemical Name:
- Mesitylene
- Synonyms
- 1,3,5-TRIMETHYLBENZENE;1,3,5-trimethylbenzene (mesitylene);Fleet-X;1.3.5-TriMethy;Trimethylbenzol;1,3,5-Trimethylbenze;sym-Trimethylbenzene;1,3,5-Trimethylbenzene Standard;NSC 9273;Mesitylen
- CBNumber:
- CB5852758
- Molecular Formula:
- C9H12
- Molecular Weight:
- 120.19
- MOL File:
- 108-67-8.mol
- MSDS File:
- SDS
- Modify Date:
- 2024/7/29 17:07:33
| Melting point | -45 °C |
|---|---|
| Boiling point | 163-166 °C(lit.) |
| Density | 0.864 g/mL at 25 °C(lit.) |
| vapor density | 4.1 (vs air) |
| vapor pressure | 14 mm Hg ( 55 °C) |
| refractive index |
n |
| Flash point | 112 °F |
| storage temp. | 2-8°C |
| solubility | Miscible with alcohol, benzene, ether (Windholz et al., 1983), and trimethylbenzene isomers. |
| form | Liquid |
| pka | >14 (Schwarzenbach et al., 1993) |
| color | Clear colorless |
| explosive limit | 0.88-6.1%, 100°F |
| Odor Threshold | 0.17ppm |
| Water Solubility | 2.9 g/L (20 ºC) |
| Merck | 14,5907 |
| BRN | 906806 |
| Henry's Law Constant | 4.03, 4.60, 5.71, 6.73, and 9.63 at 10, 15, 20, 25, and 30 °C, respectively (EPICS, Ashworth et al.,1988) |
| Exposure limits | NIOSH REL: TWA 25 ppm (125 mg/m3); ACGIH TLV: TWA for mixed isomers 25 ppm (adopted). |
| Dielectric constant | 3.4（Ambient） |
| Stability | Stable. Combustible. Incompatible with strong oxidizing agents. |
| InChIKey | AUHZEENZYGFFBQ-UHFFFAOYSA-N |
| LogP | 3.42 at 20℃ |
| CAS DataBase Reference | 108-67-8(CAS DataBase Reference) |
| NIST Chemistry Reference | Benzene, 1,3,5-trimethyl-(108-67-8) |
| EPA Substance Registry System | 1,3,5-Trimethylbenzene (108-67-8) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |     GHS02,GHS07,GHS08,GHS09 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H226-H304-H315-H332-H335-H411 | |||||||||
| Precautionary statements | P210-P273-P301+P310-P303+P361+P353-P304+P340+P312-P331 | |||||||||
| Hazard Codes | Xi,N,F,T | |||||||||
| Risk Statements | 10-37-51/53-39/23/24/25-23/24/25-11-37/38 | |||||||||
| Safety Statements | 61-45-36/37-16-7 | |||||||||
| OEB | A | |||||||||
| OEL | TWA: 25 ppm (125 mg/m3) | |||||||||
| RIDADR | UN 2325 3/PG 3 | |||||||||
| WGK Germany | 2 | |||||||||
| RTECS | OX6825000 | |||||||||
| F | 10 | |||||||||
| Autoignition Temperature | 1022 °F | |||||||||
| Hazard Note | Irritant/Flammable | |||||||||
| TSCA | Yes | |||||||||
| HazardClass | 3 | |||||||||
| PackingGroup | III | |||||||||
| HS Code | 29029080 | |||||||||
| Toxicity | LD50 (inhalation) for rats 24 g/m3/4-h (quoted, RTECS, 1985). | |||||||||
| NFPA 704 |
|
Mesitylene price More Price(14)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich(India) | M7200 | Mesitylene 98% | 108-67-8 | 100ML | ₹1911.15 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | M7200 | Mesitylene 98% | 108-67-8 | 5ML | ₹2034.45 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | M7200 | Mesitylene 98% | 108-67-8 | 500ML | ₹2671.5 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | M7200 | Mesitylene 98% | 108-67-8 | 2.5L | ₹20313.68 | 2022-06-14 | Buy |
| Sigma-Aldrich(India) | 63908 | Mesitylene analytical standard | 108-67-8 | 5ML | ₹19830.75 | 2022-06-14 | Buy |
Mesitylene Chemical Properties,Uses,Production
Chemical Properties
Mesitylene is a clear, colorless liquid. Distinctive, aromatic odor.
Chemical Properties
Aromatic-herbaceous, ethereal odor, comparatively diffusive, reminiscent of Thyme, overall pleasant, not as gassy as Cymene.
Physical properties
Colorless liquid with a peculiar odor. An odor threshold concentration of 170 ppbv was reported by Nagata and Takeuchi (1990).
Uses
Mesitylene is used to make plastics and dyes. It acts as a solvent, ligand in organometallic chemistry and precursor to 2,4,6-trimethylaniline. It is also used as a developer for photopatternable silicones due to its solvent properties in the electronics industry. It is used as an internal standard in nuclear magnetic resonance (NMR) samples due to the presence of three equivalent protons in it. It is involved in the production of trimesic acid and antioxygen, epoxy firming agent and polyester resin stabilizers. Further, it is used as an additive and component in aviation gasoline blends.
Definition
ChEBI: A trimethylbenzene carrying methyl substituents at positions 1, 3 and 5.
General Description
A colorless liquid with a peculiar odor. Insoluble in water and less dense than water. Flash point near 123°F. May be toxic by ingestion and inhalation. Used to make plastics and dyes.
Air & Water Reactions
Flammable. Insoluble in water.
Reactivity Profile
TRIMETHYLBENZENE is incompatible with the following: Oxidizers, nitric acid .
Hazard
Moderate fire hazard. Toxic by inhalation. Central nervous system impairment, asthma, and hematologic effects.
Health Hazard
May cause toxic effects if inhaled or absorbed through skin. Inhalation or contact with material may irritate or burn skin and eyes. Fire will produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution.
Fire Hazard
HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.
Safety Profile
Poison by inhalation. Moderately toxic by intraperitoneal route. Human systemic effects by inhalation: sensory changes involving peripheral nerves, somnolence (general depressed activity), and structural or functional change in trachea or bronchi. Reports of leukopenia and thrombocytopenia in experimental animals. A mild skin and eye irritant. A flammable liquid when exposed to heat or flame; can react vigorously with oxidizing materials. Violent reaction with HNO3. To fight fire, use water spray, fog, foam, CO2. Emitted from modern buildmg materials (CENEAR 69,22,91). When heated to decomposition it emits acrid smoke and irritating fumes.
Potential Exposure
Mesitylene is used as raw material in chemical synthesis and as ultraviolet stabilizer; as a paint thinner, solvent, and motor fuel component; as an intermediate in organic chemical manufacture.
Environmental Fate
Biological. In anoxic groundwater near Bemidji, MI, 1,3,5-trimethylbenzene anaerobically
biodegraded to the intermediate tentatively identified as 3,5-dimethylbenzoic acid (Cozzarelli et
al., 1990).
Photolytic. Glyoxal, methylglyoxal, and biacetyl were produced from the photooxidation of
1,3,5-trimethylbenzene by OH radicals in air at 25 °C (Tuazon et al., 1986a). The rate constant for
the reaction of 1,3,5-trimethylbenzene and OH radicals at room temperature was 4.72 x 10-11
cm3/molecule?sec (Hansen et al., 1975). A rate constant of 2.97 x 10-8 L/molecule?sec was reported
for the reaction of 1,3,5-trimethylbenzene with OH radicals in the gas phase (Darnall et al., 1976).
Similarly, a room temperature rate constant of 6.05 x 10-11 cm3/molecule?sec was reported for the
vapor-phase reaction of 1,3,5-trimethylbenzene with OH radicals (Atkinson, 1985). At 25 °C, a
rate constant of 3.87 x 10-11 cm3/molecule?sec was reported for the same reaction (Ohta and
Ohyama, 1985).
Chemical/Physical. 1,3,5-Trimethylbenzene will not hydrolyze because it does not contain a
hydrolyzable functional group (Kollig, 1993).
Shipping
UN1993 Flammable liquids, n.o.s., Hazard Class: 3; Labels: 3-Flammable liquid, Technical Name Required.
Purification Methods
Dry it with CaCl2 and distil it from Na in a glass helices-packed column. Treat it with silica gel and redistil it. Alternative purifications include vapour-phase chromatography, or fractional distillation followed by azeotropic distillation with 2-methoxyethanol (which is subsequently washed out with H2O), drying and fractional distilling. More exhaustive purification uses sulfonation by dissolving in two volumes of conc H2SO4, precipitating with four volumes of conc HCl at 0o, washing with conc HCl and recrystallising from CHCl3. The mesitylene sulfonic acid is hydrolysed with boiling 20% HCl and steam distilled. The separated mesitylene is dried (MgSO4 or CaSO4) and distilled. It can also be fractionally crystallised from the melt at low temperatures. [Beilstein 5 IV 1016.]
Incompatibilities
Vapors forms explosive mixture with air. Violent reaction with nitric acid. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides
Waste Disposal
Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. All federal, state, and local environmental regulations must be observed.
Mesitylene Preparation Products And Raw materials
Raw materials
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chevron_rightPreparation Products
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chevron_right| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| ULTIMA CHEMICALS | +91 7208029458 | Mumbai, India | 95 | 58 | Inquiry |
| JSK Chemicals | +919879767970 | Gujarat, India | 3756 | 58 | Inquiry |
| Triveni chemicals | 08048762458 | New Delhi, India | 6093 | 58 | Inquiry |
| INOX Air Products Pvt. Ltd. | 91-22-41252348 | Maharashtra, India | 53 | 58 | Inquiry |
| Loba Chemie Pvt Ltd | +91-22-6663 6663 | Mumbai, India | 498 | 58 | Inquiry |
| Anand Agencies | 91-20-24454597 | Maharashtra, India | 2337 | 58 | Inquiry |
| Avra Synthesis Pvt Ltd | +914027175796 | New Delhi, India | 1606 | 30 | Inquiry |
| Brisben Chemicals | 08048963750 | Mumbai, India | 509 | 58 | Inquiry |
| Meru Chem Pvt. Ltd. | 91-22-8037401801 | Maharashtra, India | 175 | 58 | Inquiry |
| Global Impex. | 91-22-67422603 | Maharashtra, India | 38 | 58 | Inquiry |
| Supplier | Advantage |
|---|---|
| ULTIMA CHEMICALS | 58 |
| JSK Chemicals | 58 |
| Triveni chemicals | 58 |
| INOX Air Products Pvt. Ltd. | 58 |
| Loba Chemie Pvt Ltd | 58 |
| Anand Agencies | 58 |
| Avra Synthesis Pvt Ltd | 30 |
| Brisben Chemicals | 58 |
| Meru Chem Pvt. Ltd. | 58 |
| Global Impex. | 58 |
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