| Property | Specification | Test Method | Units |
|---|---|---|---|
| Appearance | Colorless liquid | Visual | – |
| Assay (as C₆H₅CH₃) | Min 99.5% (typical for ACS/Reagent grade) | Gas Chromatography (GC) | wt% |
| Density (at 20°C) | ~0.86 – 0.87 g/mL | ASTM D4052 | g/mL |
| Boiling Point | ~110°C | ASTM D86 | °C |
| Refractive Index (nD20) | ~1.496 | Refractometer | – |
| Flash Point | <-1°C | Pensky-Martens Closed Cup | – |
| Water Content | Max 0.1% (typical for ACS/Reagent grade) | Karl Fischer Titration (ASTM E1064) | wt% |
| Sulfur Compounds | Free of H₂S & SO₂ | ASTM D853 | Pass/Fail |
| Aromatic Hydrocarbons | Min 99.5% (by GC) | Gas Chromatography (GC) | wt% |
| Non-aromatic Hydrocarbons | Max 0.5% (by GC) | Gas Chromatography (GC) | wt% |
| Color (APHA) | Max 10 (typical for ACS/Reagent grade) | ASTM D1209 | – |
| Acidity (as acetic acid) | No free acid | ASTM D847 | Pass/Fail |
| Copper Corrosion | Class 1a or 1b | ASTM D849 | – |
