Tetrahydrofuran inhibitor-free, for HPLC, 4X4L

grade

for HPLC

vapor density

2.5 (vs air)

vapor pressure

114 mmHg ( 15 °C)

143 mmHg ( 20 °C)

assay

≥99.9%

autoignition temp.

610 °F

expl. lim.

11.8 %

impurities

≤0.0005% non-volatile matter

≤0.002% free acid (as CH₃COOH)

≤0.05% peroxides (as H₂O₂)

≤0.05% water (Karl Fischer)

evapn. residue

≤0.0005%

color

APHA: ≤10

refractive index

n20/D 1.407(lit.)

bp

65-67 °C(lit.)

mp

−108 °C(lit.)

density

0.889 g/mL at 25 °C(lit.)

absorption

absorption/212 nm ≤1.0

absorption/245 nm ≤0.26

absorption/250 nm ≤0.18

absorption/275 nm ≤0.046

absorption/300 nm ≤0.02

absorption/315 nm ≤0.0044

absorption/350 nm ≤0.005

absorption/400 nm ≤0.005

UV absorption

λ: 245 nm A_max: ≤0.26

λ: 275 nm A_max: ≤0.046

λ: 315 μm A_max: ≤0.0044

suitability

complies for IR spectroscopy