NMR impurities in Toluene-d₈
Chemical shifts of common laboratory solvents, organics and gases measured in Toluene-d₈ (deuterated toluene). Use it to identify the peaks in your spectrum that are not your compound.
- Residual solvent, ¹H
- 2.08, 6.97, 7.01, 7.09 ppm
- Residual solvent, ¹³C
- 137.48, 128.87, 127.96, 125.13, 20.43 ppm
- Water, ¹H
- 0.43 ppm
To search these by shift instead of reading the table, open the lookup tool for Toluene-d₈ or view them on a ppm axis.
¹H shifts in Toluene-d₈
72 signals, ordered by chemical shift.
| Impurity | Group | δ (ppm) | Mult. |
|---|---|---|---|
| pyridine | CH(2,6) | 8.47 | m |
| pyrrole | NH | 7.71 | br t |
| dimethylformamide | CH | 7.57 | s |
| imidazole | CH(2) | 7.30 | s |
| benzene | CH | 7.12 | s |
| solvent residual signalssolvent | — | 7.09 | — |
| solvent residual signalssolvent | — | 7.01 | — |
| pyridine | CH(4) | 6.99 | m |
| solvent residual signalssolvent | — | 6.97 | — |
| imidazole | CH(4,5) | 6.86 | s |
| pyridine | CH(3,5) | 6.67 | m |
| pyrrole | CH(2,5) | 6.43 | m |
| pyrrole | CH(3,4) | 6.27 | m |
| chloroform | CH | 6.10 | s |
| propylene | CH | 5.70 | m |
| ethylene | CH₂ | 5.25 | s |
| propylene | CH₂(2) | 4.98 | dm, 17 |
| propylene | CH₂(1) | 4.92 | dm, 10 |
| hydrogen | H₂ | 4.50 | s |
| dichloromethane | CH₂ | 4.32 | s |
| ethyl acetate | CH₂CH₃ | 3.87 | q, 7 |
| 2-propanol | CH | 3.65 | sept, 6 |
| tetrahydrofuran | CH₂(2,5) | 3.54 | m |
| diglyme | CH₂ | 3.43 | m |
| 18-crown-6 | CH₂ | 3.36 | s |
| ethanol | CH₂ | 3.36 | q, 7 |
| ethylene glycol | CH₂ | 3.36 | s |
| 1,4-dioxane | CH₂ | 3.33 | s |
| diglyme | CH₂ | 3.31 | m |
| DME | CH₂ | 3.31 | s |
| diethyl ether | CH₂ | 3.25 | q, 7 |
| diglyme | OCH₃ | 3.12 | s |
| DME | CH₃ | 3.12 | s |
| methanol | CH₃ | 3.03 | s |
| nitromethane | CH₃ | 3.01 | s |
| 1,2-dichloroethane | CH₂ | 2.91 | s |
| pyrrolidine | CH₂(2,5) | 2.54 | m |
| HMPA | CH₃ | 2.42 | d, 9.5 |
| triethylamine | CH₂ | 2.39 | q, 7 |
| dimethylformamide | CH₃ | 2.37 | s |
| hexamethylbenzene | CH₃ | 2.10 | s |
| solvent residual signalssolvent | — | 2.08 | — |
| dimethylformamide | CH₃ | 1.96 | s |
| ethyl acetate | CH₃CO | 1.69 | s |
| acetic acid | CH₃ | 1.57 | s |
| acetone | CH₃ | 1.57 | s |
| propylene | CH₃ | 1.55 | dt, 6.4, 1.5 |
| tetrahydrofuran | CH₂(3,4) | 1.43 | m |
| cyclohexane | CH₂ | 1.40 | s |
| pyrrolidine | CH₂(3,4) | 1.36 | m |
| H grease | CH₂ | 1.33 | br s |
| propane | CH₂ | 1.32 | sept, 7.3 |
| n-pentane | CH₂ | 1.25 | m |
| n-hexane | CH₂ | 1.22 | m |
| diethyl ether | CH₃ | 1.10 | t, 7 |
| tert-butyl alcohol | CH₃ | 1.03 | s |
| ethanol | CH₃ | 0.97 | t, 7 |
| 2-propanol | CH₃ | 0.95 | d, 6 |
| triethylamine | CH₃ | 0.95 | t, 7 |
| ethyl acetate | CH₂CH₃ | 0.94 | t, 7 |
| H grease | CH₃ | 0.89–0.96 | m |
| propane | CH₃ | 0.89 | t, 7.3 |
| n-hexane | CH₃ | 0.88 | t, 7 |
| n-pentane | CH₃ | 0.87 | t, 7 |
| ethanol | OH | 0.83 | s |
| ethane | CH₃ | 0.81 | s |
| acetonitrile | CH₃ | 0.69 | s |
| tert-butyl alcohol | OH | 0.58 | s |
| water | OH | 0.43 | s |
| silicone grease | CH₃ | 0.26 | s |
| methane | CH₄ | 0.17 | s |
| HMDSO | CH₃ | 0.10 | s |
¹³C{¹H} shifts in Toluene-d₈
77 signals, ordered by chemical shift.
| Impurity | Group | δ (ppm) |
|---|---|---|
| acetone | CO | 204.00 |
| carbon disulfide | CS₂ | 192.71 |
| acetic acid | CO | 175.30 |
| ethyl acetate | CO | 170.02 |
| dimethylformamide | CH | 161.93 |
| pyridine | CH(2,6) | 150.25 |
| solvent residual signalssolvent | — | 137.48 |
| imidazole | CH(2) | 135.57 |
| pyridine | CH(4) | 135.17 |
| propylene | CH | 133.61 |
| hexamethylbenzene | C | 131.72 |
| solvent residual signalssolvent | — | 128.87 |
| benzene | CH | 128.57 |
| solvent residual signalssolvent | — | 127.96 |
| solvent residual signalssolvent | — | 125.13 |
| carbon dioxide | CO₂ | 124.86 |
| pyridine | CH(3,5) | 123.46 |
| ethylene | CH₂ | 122.92 |
| imidazole | CH(4,5) | 122.13 |
| pyrrole | CH(2,5) | 117.61 |
| propylene | CH₂ | 115.89 |
| acetonitrile | CN | 115.76 |
| pyrrole | CH(3,4) | 108.15 |
| carbon tetrachloride | CCl₄ | 96.57 |
| chloroform | CH | 77.89 |
| diglyme | CH₂ | 72.39 |
| DME | CH₂ | 72.25 |
| diglyme | CH₂ | 70.92 |
| 18-crown-6 | CH₂ | 70.86 |
| tert-butyl alcohol | (CH₃)₃C | 68.12 |
| tetrahydrofuran | CH₂(2,5) | 67.75 |
| 1,4-dioxane | CH₂ | 67.17 |
| diethyl ether | CH₂ | 65.94 |
| ethylene glycol | CH₂ | 64.29 |
| 2-propanol | CH | 64.12 |
| nitromethane | CH₃ | 61.14 |
| ethyl acetate | CH₂ | 60.08 |
| DME | CH₃ | 58.63 |
| diglyme | CH₃ | 58.62 |
| ethanol | CH₂ | 57.81 |
| dichloromethane | CH₂ | 53.47 |
| methanol | CH₃ | 49.90 |
| pyrrolidine | CH₂(2,5) | 47.12 |
| triethylamine | CH₂ | 46.82 |
| 1,2-dichloroethane | CH₂ | 43.40 |
| HMPA | CH₃ | 36.80 |
| dimethylformamide | CH₃ | 35.22 |
| n-pentane | CH₂(3) | 34.54 |
| n-hexane | CH₂(3,4) | 32.06 |
| dimethylformamide | CH₃ | 30.64 |
| tert-butyl alcohol | (CH₃)₃C | 30.49 |
| H grease | CH₂ | 30.31 |
| acetone | CH₃ | 30.03 |
| cyclohexane | CH₂ | 27.31 |
| tetrahydrofuran | CH₂(3,4) | 25.79 |
| pyrrolidine | CH₂(3,4) | 25.75 |
| 2-propanol | CH₃ | 25.24 |
| n-hexane | CH₂(2,5) | 23.12 |
| n-pentane | CH₂(2,4) | 22.79 |
| ethyl acetate | CH₃CO | 20.46 |
| solvent residual signalssolvent | — | 20.43 |
| acetic acid | CH₃ | 20.27 |
| propylene | CH₃ | 19.32 |
| ethanol | CH₃ | 18.78 |
| hexamethylbenzene | CH₃ | 16.84 |
| propane | CH₃ | 16.65 |
| propane | CH₂ | 16.63 |
| diethyl ether | CH₃ | 15.47 |
| n-hexane | CH₃ | 14.34 |
| n-pentane | CH₃ | 14.27 |
| ethyl acetate | CH₃ | 14.23 |
| triethylamine | CH₃ | 12.39 |
| ethane | CH₃ | 6.94 |
| HMDSO | CH₃ | 1.99 |
| silicone grease | CH₃ | 1.37 |
| acetonitrile | CH₃ | 0.03 |
| methane | CH₄ | −4.34 |
Other solvents
Data reproduced from Fulmer et al., Organometallics 2010, 29, 2176-2179. See about for how to read these values.