If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf
M80903
α-Methylstyrene
99%, contains 15 ppm p-tert-butylcatechol as inhibitor
Synonym(s):
2-Phenylpropene, Isopropenylbenzene
Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
5 mL | Available to ship TODAYfromMILWAUKEE | $58.50 |
100 mL | Available to ship TODAYfromMILWAUKEE | $61.60 |
1 L | Available to ship TODAYfromMILWAUKEE | $66.30 |
About This Item
vapor density
4.1 (vs air)
Quality Segment
vapor pressure
2.1 mmHg ( 20 °C)
assay
99%
form
liquid
autoignition temp.
1065 °F
contains
15 ppm p-tert-butylcatechol as inhibitor
expl. lim.
6.1 %
refractive index
n20/D 1.538 (lit.)
bp
165-169 °C (lit.)
mp
−24 °C (lit.)
density
0.909 g/mL at 25 °C (lit.)
storage temp.
2-8°C
SMILES string
CC(=C)c1ccccc1
InChI
1S/C9H10/c1-8(2)9-6-4-3-5-7-9/h3-7H,1H2,2H3
InChI key
XYLMUPLGERFSHI-UHFFFAOYSA-N
General description
Application
- As a monomer to prepare “Phene” monomer for photopolymerizable dental resin composites to reduce their polymerization shrinkage. α-Methylstyrene has a low double bond concentration suitable for the preparation of low volumetric shrinkage and shrinkage stress resilient resin composites.
- As a monomer to prepare poly(α-methylstyrene) polymer which can be used as an additive to fabricate organic thin film transistors. This polymer promotes the growth of uniformly aligned semiconductor crystals with significantly improved orientation.
- As a precursor to synthesize 3,4-dihydropyrans with therapeutic potential.
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This Item | |||
|---|---|---|---|
| assay 99% | assay 99% | assay 98% | assay ≥98% (CP) |
| storage temp. 2-8°C | storage temp. 2-8°C | storage temp. 2-8°C | storage temp. 2-8°C |
| density 0.909 g/mL at 25 °C (lit.) | density 0.893 g/mL at 25 °C (lit.) | density 0.904 g/mL at 25 °C (lit.) | density 0.917 g/mL at 25 °C |
| bp 165-169 °C (lit.) | bp 168 °C (lit.) | bp 71-72 °C/10 mmHg (lit.) | bp 165-169 °C (lit.) |
| form liquid | form - | form liquid | form - |
| refractive index n20/D 1.538 (lit.) | refractive index n20/D 1.5425 (lit.) | refractive index n20/D 1.539 (lit.) | refractive index - |
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Danger
Hazard Classifications
Aquatic Chronic 2 - Asp. Tox. 1 - Eye Irrit. 2 - Flam. Liq. 3 - Repr. 2 - Skin Sens. 1B - STOT SE 3
target_organs
Respiratory system
Storage Class
3 - Flammable liquids
wgk
WGK 2
flash_point_f
114.8 °F - closed cup
flash_point_c
46 °C - closed cup
ppe
Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
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How is shipping temperature determined? And how is it related to the product storage temperature?
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Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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