spectrophotometric grade, ≥99.5%, inhibitor-free

Tetramethylene oxide, THF, Oxolane, Butylene oxide
Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
Beilstein/REAXYS Number:
EC Number:
MDL number:
PubChem Substance ID:


spectrophotometric grade

vapor density

2.5 (vs air)

vapor pressure

114 mmHg ( 15 °C)
143 mmHg ( 20 °C)





autoignition temp.

610 °F

expl. lim.

1.8-11.8 %


UV/Vis spectroscopy: suitable


≤0.015% peroxide (as H2O2)
<0.02% water

evapn. residue


refractive index

n20/D 1.407 (lit.)


65-67 °C (lit.)


−108 °C (lit.)


0.889 g/mL at 25 °C (lit.)


H2O reference

UV absorption

λ: 212 nm Amax: 1.0
λ: 250 nm Amax: 0.18
λ: 300 nm Amax: 0.02
λ: 350-400 nm Amax: 0.005

SMILES string




InChI key


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Other Notes

A -D suffix exists for administrative purposes only.
All -D packages are 100% the same product, same quality, same specification as the package sizes previously sold without a -D.

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

Certificate of Analysis

Certificate of Origin

P T Clayton et al.
The Journal of clinical investigation, 79(4), 1031-1038 (1987-04-01)
Urinary bile acids from a 3-mo-old boy with cholestatic jaundice were analyzed by ion exchange chromatography and gas chromatography-mass spectrometry (GC-MS). This suggested the presence of labile sulfated cholenoic acids with an allylic hydroxyl group, a conclusion supported by analysis...
Ali Ertürk et al.
Nature protocols, 7(11), 1983-1995 (2012-10-13)
The examination of tissue histology by light microscopy is a fundamental tool for investigating the structure and function of organs under normal and disease states. Many current techniques for tissue sectioning, imaging and analysis are time-consuming, and they present major...
Crispin Lichtenberg et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 21(44), 15797-15805 (2015-09-17)
The reactivity of the all-ferrous FeN heterocubane [Fe4 (Ntrop)4 ] (1) with i) Brønsted acids, ii) σ-donors, iii) σ-donors/π-acceptors, and iv) one-electron oxidants has been investigated (trop = 5H-dibenzo[a,d]cyclo-hepten-5-yl). 1 showed self-re-assembling after reactions with i) and proved surprisingly inert in reactions with ii)...
Fabrice Giusti et al.
The Journal of membrane biology, 247(9-10), 909-924 (2014-03-22)
Amphipols are short amphipathic polymers that can substitute for detergents at the hydrophobic surface of membrane proteins (MPs), keeping them soluble in the absence of detergents while stabilizing them. The most widely used amphipol, known as A8-35, is comprised of...
C N Ong et al.
British journal of industrial medicine, 48(9), 616-621 (1991-09-01)
Occupational exposure to tetrahydrofuran (THF) was studied by analysis of environmental air, blood, alveolar air, and urine from 58 workers in a video tape manufacturing plant. Head space gas chromatography (GC) with an FID detector was used for determination of...

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