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Cas Database |
| Name |
4-Methylstyrene |
EINECS | 210-762-8 |
| CAS No. | 622-97-9 | Density | 0.897 g/cm3 |
| PSA | 0.00000 | LogP | 2.63800 |
| Solubility | insoluble in water | Melting Point |
-34 °C |
| Formula | C9H10 | Boiling Point | 172 °C at 760 mmHg |
| Molecular Weight | 118.178 | Flash Point | 48.7 °C |
| Transport Information | UN 2618 3 | Appearance | Clear colourless to light yellow liquid |
| Safety | 26-36-62 | Risk Codes | 10-36/37/38-65 |
| Molecular Structure |
|
Hazard Symbols |
 Xn
|
| Synonyms |
Styrene,p-methyl- (8CI);(4-Methylphenyl)ethene;(4-Tolyl)ethene;1-Ethenyl-4-methylbenzene;1-Methyl-4-vinylbenzene;1-p-Tolylethene;4-Ethenylmethylbenzene;4-Methylstyrene;4-Methylvinylbenzene;4-Vinyltoluene;PMS;p-Methylstyrene;p-Vinyltoluene; |
Article Data | 334 |
4-Methylstyrene Synthetic route
| Conditions | Yield |
|---|---|
| With methyl tributylammonium chloride; sodium hydroxide at 150℃; for 5h; | 99.1% |
| With hydrogen bromide Behandeln des Reaktionsprodukts mit Soda; | |
| With ferulic acid decarboxylase from Saccharomyces cerevisiae In aq. phosphate buffer; dimethyl sulfoxide at 25℃; pH=7.4; Kinetics; Enzymatic reaction; |
| Conditions | Yield |
|---|---|
| Stage #1: para-bromotoluene With magnesium; lithium chloride In tetrahydrofuran at 0 - 20℃; for 2h; Schlenk technique; Inert atmosphere; Stage #2: vinyl acetate With iron(III) chloride In tetrahydrofuran at 0℃; for 3h; Schlenk technique; Inert atmosphere; | 99% |
| Stage #1: para-bromotoluene With magnesium; lithium chloride In tetrahydrofuran at 20℃; for 2h; Inert atmosphere; Stage #2: vinyl acetate With iron(III) chloride; N,N,N,N,-tetramethylethylenediamine In tetrahydrofuran at 0 - 20℃; for 4h; | 99% |
| With [2,2]bipyridinyl; tetrabutylammonium tetrafluoroborate; cobalt(II) bromide In pyridine; acetonitrile at 20℃; Electrolysis; | 53% |
| Stage #1: para-bromotoluene With magnesium; lithium chloride In tetrahydrofuran at 0 - 20℃; for 2h; Inert atmosphere; Stage #2: vinyl acetate With iron(III) chloride In tetrahydrofuran at 0℃; for 2h; Inert atmosphere; | 49% |
| Conditions | Yield |
|---|---|
| With sodium dodecylbenzenesulfonate; hydrogen; palladium diacetate In water at 25℃; under 760.051 Torr; for 0.75h; | 99% |
| With piperazine; NiO doped titania In methanol at 20℃; for 3h; Inert atmosphere; Sealed tube; UV-irradiation; | 97% |
| With hydrogen In ethanol at 100℃; under 4500.45 Torr; for 24h; chemoselective reaction; | 93% |
- 63918-53-6
vinyl methanesulfonate
- 5720-05-8
4-methylphenylboronic acid
- 622-97-9
1-ethenyl-4-methylbenzene
| Conditions | Yield |
|---|---|
| With sodium tetrachloropalladate(II); cataCXium F sulf; potassium carbonate In water at 100℃; for 16h; Suzuki Miyaura coupling; Inert atmosphere; | 99% |
- 83813-73-4
vinyl 4-methylbenzenesulfonate
- 5720-05-8
4-methylphenylboronic acid
- 622-97-9
1-ethenyl-4-methylbenzene
| Conditions | Yield |
|---|---|
| With sodium tetrachloropalladate(II); cataCXium F sulf; potassium carbonate In water at 100℃; for 16h; Suzuki Miyaura coupling; Inert atmosphere; | 99% |
| Conditions | Yield |
|---|---|
| With sodium hydride In mineral oil at 135℃; for 10h; Inert atmosphere; Schlenk technique; | 99% |
| Conditions | Yield |
|---|---|
| With palladium diacetate; N,N′-bis(2,6-diisopropylphenyl)imidazol-2-ylidene hydrochloride; tetrabutyl ammonium fluoride In tetrahydrofuran; 1,4-dioxane at 80℃; for 48h; | 98% |
| With Pd/Fe3O4; cesium fluoride In 1,4-dioxane at 100℃; for 24h; Stille Cross Coupling; | 75% |
| Conditions | Yield |
|---|---|
| With 1-butyl-3-methyl-3H-imidazol-1-ium fluoride In acetonitrile at 70℃; Hiyama Coupling; Inert atmosphere; | 98% |
| With sodium hydroxide In water at 100℃; for 10h; Hiyama Coupling; | 75% |
| Conditions | Yield |
|---|---|
| With hydrogen In hexane at 40℃; under 760.051 Torr; for 3h; | A 96% B 4% |
| With hydrogen; platinum nanoparticles In methanol at 90℃; under 10343.2 Torr; for 4.5h; Title compound not separated from byproducts.; | A 88 % Spectr. B 12 % Spectr. |
| With hydrogen In hexane under 760.051 Torr; chemoselective reaction; |
- 33491-04-2
1-(chloroethynyl)-4-methylbenzene
- 622-97-9
1-ethenyl-4-methylbenzene
| Conditions | Yield |
|---|---|
| Stage #1: 1-(chloroethynyl)-4-methylbenzene With titanium(IV) isopropylate; isopropylmagnesium bromide In diethyl ether at -50℃; Metallation; Stage #2: With hydrogenchloride; water Hydrolysis; | 95% |
4-Methylstyrene Chemical Properties
Empirical Formula: C9H10
Molecular Weight: 118.1757
EINECS: 210-762-8
Melting point: -34 °C
Storage temp: 2-8°C
Index of Refraction: 1.55
Density: 0.897 g/cm3
Flash Point: 48.7 °C
Enthalpy of Vaporization: 39.16 kJ/mol
Boiling Point: 172 °C at 760 mmHg
Vapour Pressure: 1.81 mmHg at 25 °C
Appearance: A clear colorless liquid with an aromatic odor
Structure of 4-Methylstyrene (CAS.622-97-9):
4-Methylstyrene Uses
4-Methylstyrene (CAS.622-97-9) can be used in making plastics, especially as a monomer for polyesters.
4-Methylstyrene Toxicity Data With Reference
| 1. | cyt-hmn:lyms 330 µmol/L | CRNGDP Carcinogenesis. 2 (1981),237. | ||
| 2. | sce-hmn:lyms 330 µmol/L | CRNGDP Carcinogenesis. 2 (1981),237. | ||
| 3. | orl-rat LD50:2255 mg/kg | JACTDZ Journal of the American College of Toxicology. 1 (1990),77. | ||
| 4. | ipr-rat LD50:2324 mg/kg | JACTDZ Journal of the American College of Toxicology. 1 (1990),77. | ||
| 5. | orl-mus LD50:1072 mg/kg | JACTDZ Journal of the American College of Toxicology. 1 (1990),76. | ||
| 6. | ipr-mus LD50:581 mg/kg | JACTDZ Journal of the American College of Toxicology. 1 (1990),76. | ||
| 7. | ivn-mus LD50:280 mg/kg | JACTDZ Journal of the American College of Toxicology. 1 (1990),76. | ||
| 8. | orl-dog LD50:>5 g/kg | JACTDZ Journal of the American College of Toxicology. 1 (1990),77. | ||
| 9. | skn-rbt LD50:>5 g/kg | JACTDZ Journal of the American College of Toxicology. 1 (1990),77. |
4-Methylstyrene Consensus Reports
Reported in EPA TSCA Inventory.
4-Methylstyrene Safety Profile
Poison by intravenous route. Moderately toxic by ingestion. Slightly toxic by skin contact. Human mutation data reported.
Risk Statements: 10-36/37/38-65
R10:Flammable.
R36/37/38:Irritating to eyes, respiratory system and skin.
R65:Harmful: may cause lung damage if swallowed.
Safety Statements: 26-36-62
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36:Wear suitable protective clothing.
S62:If swallowed, do not induce vomitting; seek medical advice immediately and show this container or label.
4-Methylstyrene Specification
4-Methylstyrene (CAS.622-97-9) also can be called 4-Vinyltoluene ; Styrene, p-methyl- ; and; Benzene, 1-ethenyl-4-methyl- . It may react vigorously with strong oxidizing agents. May react exothermically with reducing agents to release hydrogen gas. In the presence of various catalysts (such as acids) or initiators, may undergo exothermic addition polymerization reactions. May undergo autoxidation upon exposure to the air to form peroxides. These peroxides and polyperoxides are usually extremely unstable and liable to detonation. If polymerization takes place inside a closed container, the container may rupture violently. Vapors irritate the mucous membranes. Less dense than water and insoluble in water.
4-Methylstyrene (CAS.622-97-9) is hazardous,so the first aid measures and others should be known.Such as: When on the skin: first,should flush skin with plenty of water immediatelyfor at least 15 minutes while removing contaminated clothing. Secondly,Get shoesmedical aid . Or in the eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids.Then get medical aid soon.While ,it's Inhaled: Remove from exposure and move to fresh air immediately.Give artificial respiration while not breathing. When breathing is difficult, give oxygen. And as soon as to get medical aid. Then you have the ingesting of the product : Wash mouth out with water,and get medical aid immediately.Notes to physician: Treat supportively and symptomatically.
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