Reference

1H NMR residual solvent and trace impurity shifts

Chemical shifts for residual solvents and the trace impurities that show up in almost every 1H spectrum, in the eight deuterated solvents used most. Read across the row for the same impurity in a different solvent.

CompoundProtonMult.CDCl3CD2Cl2C6D6(CD3)2CO(CD3)2SOCD3CNCD3ODD2O
Solvent residualresidual-7.265.327.162.052.501.943.314.79
Water (H2O / HDO)OHs1.561.520.402.843.332.134.874.79
AcetoneCH3s2.172.121.552.092.092.082.152.22
AcetonitrileCH3s2.101.970.582.052.071.962.032.06
BenzeneCHs7.367.357.157.367.377.377.33
tert-ButanolCH3s1.281.241.051.181.111.161.401.24
ChloroformCHs7.267.326.158.028.327.587.90
DichloromethaneCH2s5.305.334.275.635.765.445.49
1,2-DichloroethaneCH2s3.733.762.903.873.903.813.78
Diethyl etherCH3t1.211.151.111.111.091.121.181.17
Diethyl etherCH2q3.483.433.263.413.383.423.493.56
1,4-DioxaneCH2s3.713.653.353.593.573.603.663.75
EthanolCH3t1.251.190.961.121.061.121.191.17
EthanolCH2q3.723.663.343.573.443.543.603.65
Ethyl acetateCH3COs2.052.001.651.971.991.972.012.07
n-HexaneCH3t0.880.890.890.880.860.890.90
MethanolCH3s3.493.343.073.313.163.283.343.34
NitromethaneCH3s4.334.342.944.434.424.314.344.40
Silicone greaseCH3s0.070.070.290.130.080.10
TetrahydrofuranOCH2m3.763.693.573.633.603.643.713.74
TolueneCH3s2.362.342.112.322.302.332.32
TriethylamineCH3t1.030.990.960.960.930.961.050.99
DimethylformamideCHOs8.027.967.637.967.957.927.977.92

Notes

  • Shifts are in ppm, referenced as in the source. A blank cell means the source does not report that combination, not that the peak is absent.
  • An unexpected peak is more often water, grease, or the last solvent used on that glassware than a real product signal.

Source

Fulmer et al., Organometallics 2010, 29, 2176-2179, Table 1 (1H NMR), residual-solvent and trace-impurity shifts.

Data revision 2026-06-22.

These values are imported from the same data the Aliquot calculators use, so this page cannot drift away from what the tools compute.

Calculators that use this data

  • NMR impurity finder: Identify a 1H peak from its shift, or look up where a known compound appears (Fulmer table).