Tetrahydrofuran

vapor pressure

114 mmHg ( 15 °C), 143 mmHg ( 20 °C)

grade

puriss. p.a.

assay

≥99.9% (GC)

autoignition temp.

610 °F

quality

dried

contains

~250 mg/L 2,6-di-tert.-butyl-4-methylphenol as stabilizer

expl. lim.

1.8-11.8 %

impurities

≤0.001% free acid (as CH₃COOH), ≤0.001% non-volatile matter, ≤0.005% peroxides (as H₂O₂), ≤0.005% water (Karl Fischer), ≤0.005% water

mp

−108 °C (lit.)

density

0.889 g/mL at 25 °C (lit.)

cation traces

Al: ≤0.5 mg/kg, B: ≤0.02 mg/kg, Ba: ≤0.1 mg/kg, Ca: ≤0.5 mg/kg, Cd: ≤0.05 mg/kg, Co: ≤0.02 mg/kg, Cr: ≤0.02 mg/kg, Cu: ≤0.02 mg/kg, Fe: ≤0.1 mg/kg, Mg: ≤0.1 mg/kg, Mn: ≤0.02 mg/kg, Ni: ≤0.02 mg/kg, Pb: ≤0.1 mg/kg, Sn: ≤0.1 mg/kg, Zn: ≤0.1 mg/kg