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Alpha-Methylstyrene CAS #98-83-9
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
Methylstyrene is a colorless liquid with a characteristic odor. Molecular weight = 118.19; Specific gravity(H2O:1) 5 0.91; Boiling point = 165.6℃; Freezing/Meltingpoint 5 2 23.3℃; Vapor pressure 5 2 mmHg at 20℃;Flash point = 54℃; Autoignition temperature 5 574℃.Explosive limits: LEL 5 1.9%; UEL 5 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 | n |
| 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
Alpha-Methylstyrene (CAS #98-83-9), namely α -methylstyrene, as an important chemical raw material, has a wide range of applications. In the field of polymers, it can be copolymerized with various monomers to produce ABS resin, styrene-butadiene rubber, etc., enhancing the hardness, heat resistance and impact resistance of materials. In the coatings industry, its polymers can serve as film-forming substances for coatings, enhancing the chemical resistance and wear resistance of the coating.
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