CAS Number: 142‑82‑5
Synonyms: n‑Heptane; Normal heptane; Dipropylmethane
Chemical Formula:C₇H₁₆
Molecular Weight:100.20 g/mol
Product Introduction
A colorless, non-polar, highly volatile liquid with a mild gasoline odor. n‑Heptane is used as a reference fuel in octane rating (0 number), non-polar solvent in labs and industry, ink production, and automotive testing.
| Property | Value |
|---|---|
| Appearance | Colorless liquid |
| Odor | Mild gasoline-like |
| Density @ 20 °C | ~0.683–0.69 g/cm³ |
| Melting Point | ~–90.6 to –91 °C |
| Boiling Point | ~98.4 °C |
| Flash Point (CC) | ~–4 °C |
| Vapor Pressure @ 20 °C | ~35–46 mm Hg (40 mm Hg) |
| Refractive Index (n₂₀ᴅ) | ~1.387–1.389 |
| Solubility in Water | <0.01 g/100 mL |
| Vapor Density | ~3 × air |
| Explosion Limits | ~1.1–6.7% |
| Viscosity @ 20 °C | ~0.389 mPa·s |
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