|Heptane Chemical Properties|
|Melting point||−91 °C(lit.)|
|Boiling point||98 °C(lit.)|
|density||0.684 g/mL at 20 °C|
|vapor density||3.5 (vs air)|
|vapor pressure||40 mm Hg ( 20 °C)|
|refractive index||n20/D 1.397|
|storage temp.||Store at +5°C to +30°C.|
|pka||>14 (Schwarzenbach et al., 1993)|
|Specific Gravity||0.684 (20/4℃)|
|Water Solubility||practically insoluble|
|λmax||λ: 200 nm Amax: ≤1.0|
|Henry’s Law Constant||0.901, 1.195, and 1.905(atm?m3/mol) at 26.0, 35.8, and 45.0 °C, respectively (dynamic headspace, Hansen et al., 1995)|
|Exposure limits||NIOSH REL: TWA 85 ppm (350 mg/m3), 15-min ceiling 440 ppm (1,800 mg/m3), IDLH 750 ppm; OSHA PEL: TWA 500 ppm (2,000 mg/m3); ACGIH TLV: TWA 400 ppm, STEL 500 ppm (adopted).|
|Stability:||Stable. Incompatible with oxidizing agents, chlorine, phosphorus. Highly flammable. Readily forms explosive mixtures with air.|
|CAS DataBase Reference||142-82-5(CAS DataBase Reference)|
|NIST Chemistry Reference||Heptane(142-82-5)|
|EPA Substance Registry System||Heptane (142-82-5)|
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