Alpha-Methylstyrene
• CAS Number: 98-83-9
• Chemical Formula: C9H10
• Synonyms:
▪ alpha-Methylstyrene
▪ Isopropenylbenzene
• Appearance: Colorless liquid
• HS Code: 2902 90 00
• MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)
Products Description of Alpha-Methylstyrene CAS #98-83-9
α-Methylstyrene is a colorless liquid with a distinct characteristic odor.
Core Physicochemical Properties
Molecular weight: 118.19，Specific gravity (relative to water, H₂O=1): 0.91，Boiling point: 165.6℃
Melting/freezing point: -23.3℃，Vapor pressure: 2 mmHg at 20℃，Flash point: 54℃，Autoignition temperature: 574℃，Explosive limits: Lower Explosive Limit (LEL) = 1.9%; Upper Explosive Limit (UEL) = 6.1%
Parameters
Melting point | −24 °C(lit.) |
Boiling point | 165-169 °C(lit.) |
density | 0.909 g/mL at 25 °C(lit.) |
vapor density | 4.1 (vs air) |
vapor pressure | 2.1 mm Hg ( 20 °C) |
refractive index | n20/D 1.539 |
Fp | 114 °F |
storage temp. | 2-8°C |
solubility | 560mg/l |
form | Liquid |
color | Clear colorless |
PH | 5-6 (500g/l, H2O) |
explosive limit | 0.9-6.6%(V) |
Water Solubility | insoluble |
BRN | 969405 |
Exposure limits | NIOSH REL: TWA 50 ppm (240 mg/m3), STEL 100 ppm (485 mg/m3), IDLH 700 ppm; OSHA PEL: ceiling 100 ppm; ACGIH TLV: TWA 50 ppm, STEL 100 ppm (adopted). |
Dielectric constant | 2.2799999999999998 |
InChIKey | XYLMUPLGERFSHI-UHFFFAOYSA-N |
LogP | 3.48 at 25℃ |
CAS DataBase Reference | 98-83-9(CAS DataBase Reference) |
IARC | 2B (Vol. 101) 2013 |
NIST Chemistry Reference | «alpha»-Methylstyrene(98-83-9) |
EPA Substance Registry System | .alpha.-Methylstyrene (98-83-9) |
Safety Information
Hazard Codes | Xi,N |
Risk Statements | 10-36/37-51/53 |
Safety Statements | 61 |
RIDADR | UN 2303 3/PG 3 |
OEB | A |
OEL | TWA: 50 ppm (240 mg/m3), STEL: 100 ppm (485 mg/m3) |
WGK Germany | 2 |
RTECS | WL5075300 |
Autoignition Temperature | 445 °C |
TSCA | Yes |
HS Code | 2902 90 00 |
HazardClass | 3 |
PackingGroup | III |
Hazardous Substances Data | 98-83-9(Hazardous Substances Data) |
Toxicity | LD50 orally in Rabbit: 4900 mg/kg |
IDLA | 700 ppm |
Product Application of Alpha-Methylstyrene CAS #98-83-9
α-Methylstyrene (CAS No. 98-83-9), also referred to as alpha-methylstyrene, is a key chemical raw material with extensive applications across multiple industries.
Polymer Field Applications
It can undergo copolymerization with various monomers to manufacture products like ABS resin and styrene-butadiene rubber. This copolymerization process effectively improves the material’s hardness, heat resistance, and impact resistance.
Coatings Industry Applications
Its polymer derivatives can act as film-forming agents in coatings. This enhances the coating’s resistance to chemicals and wear, optimizing the overall performance of the finished coating product.
Factory and Equipment Show
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Inventory 2-3 working days New production 7-10 working days
