Styrene
Product Parameter
|
Item |
Index |
|
Melting Point |
-31℃（lit.） |
|
Boiling Point |
145-146℃（lit.） |
|
Density |
0.906 g/ml at 25℃ |
|
Vapor Density |
3.6（vs air) |
|
Vapor pressure |
12.4 mm Hg(37.7℃) |
|
Refractive Index |
n20/D 1.546（lit.） |
|
Flash Point |
88oF |
|
Storage conditions |
Store at<=20℃ |
|
Solubility |
0.24g/L |
|
Form |
liquid |
|
Acidity Coefficient |
>14 (Schwarzenbach et al., 1993) |
|
Proportion |
0.909 |
|
Colour |
colourless |
|
Odor |
0.10% triacetin. Fragrant flower scent |
|
Odor Threshold |
0.035ppm |
|
Flavor |
balsamic |
|
Biological Origin |
synthetic |
|
Explosion Limit Value |
1.1-8.9%(V) |
|
Soluble |
0.3g/L（20℃） |
|
Freezing Point |
-30.6（20℃） |
|
Sensitivity |
Air Sensitive |
|
Merck |
148860 |
|
BRN |
1071236 |
|
Henry's Law Constant |
(x 10-3 atm?m³/mol): 3.91 at 25 ℃(static headspace-GC, Welke et al., 1998) |
|
Exposure Limit |
TLV-TWA 50 ppm(~ 212 mg/m°)(ACGlH and NloSH), 100 ppm(~ 425 mg/m3)(OSHA and MSHA); ceiling 200 ppm, peak 600 ppm/5 min/3 h(OSHA);STEL100 ppm(~425 mg/m3)(ACGIH). |
|
Dielectric Constant |
2.4（25℃） |
|
Stability |
Stable, but may aggregate under light exposure. Usually transported together with dissolved inhibitors. Substances that should be avoided include strong acids, aluminum chloride, strong oxidants, copper, copper alloys, metal salts, polymerization catalysts, and accelerators. Flammable - Steam combustion may spread over considerable distances |
|
InChlKey |
PPBRXRYQALVLMV-UHFFFAOYSA-N |
|
LogP |
2.96 at 25℃ |
|
Carcinogen Classification Schemes |
2A(Vol.60,82,121）2019 |
| Item | Index | Unit | Value | Analytical Methods |
| Lot Number | / | / | SR2025031006 | / |
| Appearance | Colorless transparent liquid | / | Colorless and transparent | Visual Inspection |
| Purity | ≥99.5 | % | 99.8 | Gas chromatography |
| Moisture Content | ≤200 | ppm | 150 | Karl Fischer Method |
| Polymerization inhibitor | 10-50 | TBC,ppm | 35 | Ultraviolet–visible spectroscopy |
| Chroma | ≤15 | PT-Co | 10 | / |
| Acidity | ≤0.01 | % | 0.01 | Acid-base titration method |
| Aldehyde | ≤0.02 | % | 0.02 | / |
| Peroxide content | ≤100 | ppm | 80 | / |
| Density | 0.905-0.910 | 20℃，g/cm³ | 0.907 | / |
| Conclusion: Qualified | ||||