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. Author manuscript; available in PMC: 2018 Feb 21.
Published in final edited form as: Anal Chem. 2015 Feb 10;87(5):2779–2787. doi: 10.1021/ac504101a

Table 2.

Physical Properties of Target Analytes

name molar mass (g/mol) melting point (°C) boiling point (°C) vapor pressure (torr)
methamphetamine 149.2 3 216 0.004
ephedrine 165.2 38 255 0.011
MDMA 193.3 150 283 2 × 10−4
PCP 243.4 47 340 1 × 10−5
morphine 285.3 254 476 2 × 10−10
cocaine 303.4 98 395 1 × 10−5
THC 314.5 160 390 5 × 10−8
heroin 369.4 173 493 6 × 10−8