| Identification | More | [Name]
4-Methylstyrene | [CAS]
622-97-9 | [Synonyms]
4-Methylphenylene
4-METHYLSTYRENE
4-VINYLTOLUENE
METHYLSTYRENE
PARA-METHYLSTYRENE
p-Methylphenylene
P-METHYLSTYRENE
P-VINYLTOLUENE
VINYLTOLUENE
1-ethenyl-4-methyl-benzen
1-ethenyl-4-methyl-Benzene
1-methyl-4-ethenylbenzene
1-Methyl-4-vinylbenzene
1-p-Tolylethene
4-ethenylmethylbenzene
4-vinyl
benzene,1-ethenyl-4-methyl-
p-methyl-styren
Styrene, p-methyl-
styrene,p-methyl- | [EINECS(EC#)]
210-762-8 | [Molecular Formula]
C9H10 | [MDL Number]
MFCD00008621 | [Molecular Weight]
118.18 | [MOL File]
622-97-9.mol |
| Chemical Properties | Back Directory | [Appearance]
CLEAR COLOURLESS TO LIGHT YELLOW LIQUID | [Melting point ]
-34 °C | [Boiling point ]
170-175 °C(lit.) | [density ]
0.897 g/mL at 25 °C(lit.)
| [vapor pressure ]
<1 mm Hg ( 20 °C)
| [refractive index ]
n20/D 1.542(lit.)
| [Fp ]
114 °F
| [storage temp. ]
2-8°C
| [solubility ]
0.089g/l | [form ]
Liquid | [color ]
Clear colorless to light yellow | [explosive limit]
1.1-5.2%(V) | [Water Solubility ]
Miscible with benzene. slightly miscible with water. | [BRN ]
1209317 | [LogP]
3.44 at 25℃ | [CAS DataBase Reference]
622-97-9(CAS DataBase Reference) | [NIST Chemistry Reference]
Benzene, 1-ethenyl-4-methyl-(622-97-9) | [EPA Substance Registry System]
622-97-9(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
Xn | [Risk Statements ]
R10:Flammable.
R36/37/38:Irritating to eyes, respiratory system and skin .
R65:Harmful: May cause lung damage if swallowed. | [Safety Statements ]
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 vomiting: seek medical advice immediately and show this container or label . | [RIDADR ]
UN 2618 3/PG 3
| [WGK Germany ]
3
| [RTECS ]
WL5076000
| [Autoignition Temperature]
959 °F | [TSCA ]
Yes | [HazardClass ]
3 | [PackingGroup ]
III | [HS Code ]
29029050 | [Hazardous Substances Data]
622-97-9(Hazardous Substances Data) |
| Hazard Information | Back Directory | [General Description]
A clear colorless liquid with an aromatic odor. Flash point 129°F. Usually shipped with an inhibitor such as tert-butyl catechol added May polymerize if contaminated or subjected to heat. 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. Hence floats on water. Density is 7.6 lb/gal. Used in making plastics, especially as a monomer for polyesters. | [Reactivity Profile]
P-METHYLSTYRENE(622-97-9) 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. The peroxidation of butadiene has been involved in several serious industrial accidents. | [Air & Water Reactions]
Flammable. Insoluble in water. | [Health Hazard]
Inhalation or contact with material may irritate or burn skin and eyes. Fire may produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution. | [Chemical Properties]
CLEAR COLOURLESS TO LIGHT YELLOW LIQUID | [Uses]
4-Methylstyrene is used as a monomer for polyesters and in plastics production. It is also used as an intermediate in paint and coating additives. Further, it is used with other vinyltoluene isomers (3-vinyltoluene) as monomers for the preparation of poly(vinyltoluene). In addition to this, it is employed as a bi- ligand in the preparation of cationic, two-coordinate triphenylphosphine-gold(I)-pi complexes. Further, it is involved in Heck coupling reactions with chlorobenzene. | [Definition]
ChEBI: 4-Methylstyrene is a member of styrenes. | [Purification Methods]
Purify it as the above styrenes and add a small amount of antioxidant if it is to be stored. It has UV in EtOH at max 285nm (log 3.07), and in EtOH + HCl 295nm (log 2.84) and 252nm (log 4.23). [Schwartzman & Carson J Am Chem Soc 78 322 1956, Joy & Orchin J Am Chem Soc 81 305 1959, Buck et al. J Chem Soc 23771949, Beilstein 5 IV 1369.] |
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