NMR impurities in THF-d₈

Chemical shifts of common laboratory solvents, organics and gases measured in THF-d₈ (deuterated tetrahydrofuran). Use it to identify the peaks in your spectrum that are not your compound.

Residual solvent, ¹H: 1.72, 3.58 ppm
Residual solvent, ¹³C: 67.21, 25.31 ppm
Water, ¹H: 2.46 ppm

To search these by shift instead of reading the table, open the lookup tool for THF-d₈ or view them on a ppm axis.

¹H shifts in THF-d₈

72 signals, ordered by chemical shift.

¹H chemical shifts of trace impurities in THF-d₈
Impurity	Group	δ (ppm)	Mult.
pyrrole	NH	9.96	br t
pyridine	CH(2,6)	8.54	m
dimethylformamide	CH	7.91	s
chloroform	CH	7.89	s
pyridine	CH(4)	7.65	m
imidazole	CH(2)	7.48	s
benzene	CH	7.31	s
pyridine	CH(3,5)	7.25	m
toluene	CH(3,5)	7.19	m
toluene	CH(2,4,6)	7.10	m
imidazole	CH(4,5)	6.94	s
pyrrole	CH(2,5)	6.66	m
pyrrole	CH(3,4)	6.02	m
propylene	CH	5.79	m
dichloromethane	CH₂	5.51	s
ethylene	CH₂	5.36	s
propylene	CH₂(2)	4.99	dm, 17
propylene	CH₂(1)	4.89	dm, 10
hydrogen	H₂	4.55	s
nitromethane	CH₃	4.31	s
ethyl acetate	CH₂CH₃	4.04	q, 7
2-propanol	CH	3.82	sept, 6
1,2-dichloroethane	CH₂	3.77	s
solvent residual signalssolvent	—	3.58	—
18-crown-6	CH₂	3.57	s
1,4-dioxane	CH₂	3.56	s
diglyme	CH₂	3.53	m
ethanol	CH₂	3.51	q, 7
ethylene glycol	CH₂	3.48	s
diglyme	CH₂	3.43	m
DME	CH₂	3.43	s
diethyl ether	CH₂	3.38	q, 7
ethanol	OH	3.30	s
diglyme	OCH₃	3.28	s
DME	CH₃	3.28	s
methanol	CH₃	3.27	s
tert-butyl alcohol	OH	3.16	s
methanol	OH	3.02	s
dimethylformamide	CH₃	2.88	s
dimethylformamide	CH₃	2.76	s
pyrrolidine	CH₂(2,5)	2.75	m
HMPA	CH₃	2.58	d, 9.5
triethylamine	CH₂	2.46	q, 7
water	OH	2.46	s
toluene	CH₃	2.31	s
hexamethylbenzene	CH₃	2.18	s
acetone	CH₃	2.05	s
acetonitrile	CH₃	1.95	s
ethyl acetate	CH₃CO	1.94	s
acetic acid	CH₃	1.89	s
solvent residual signalssolvent	—	1.72	—
propylene	CH₃	1.69	dt, 6.4, 1.5
pyrrolidine	CH₂(3,4)	1.59	m
cyclohexane	CH₂	1.44	s
propane	CH₂	1.33	sept, 7.3
n-pentane	CH₂	1.31	m
H grease	CH₂	1.29	br s
n-hexane	CH₂	1.29	m
ethyl acetate	CH₂CH₃	1.19	t, 7
tert-butyl alcohol	CH₃	1.15	s
diethyl ether	CH₃	1.12	t, 7
ethanol	CH₃	1.10	t, 7
2-propanol	CH₃	1.08	d, 6
triethylamine	CH₃	0.97	t, 7
propane	CH₃	0.90	t, 7.3
n-hexane	CH₃	0.89	t, 7
n-pentane	CH₃	0.89	t, 7
H grease	CH₃	0.85–0.91	m
ethane	CH₃	0.85	s
methane	CH₄	0.19	s
silicone grease	CH₃	0.11	s
HMDSO	CH₃	0.07	s

¹³C{¹H} shifts in THF-d₈

77 signals, ordered by chemical shift.

¹³C{¹H} chemical shifts of trace impurities in THF-d₈
Impurity	Group	δ (ppm)
acetone	CO	204.19
carbon disulfide	CS₂	193.37
acetic acid	CO	171.69
ethyl acetate	CO	170.32
dimethylformamide	CH	161.96
pyridine	CH(2,6)	150.57
toluene	C(1)	138.24
pyridine	CH(4)	135.99
imidazole	CH(2)	135.72
propylene	CH	134.02
hexamethylbenzene	C	131.88
toluene	CH(2,6)	129.47
benzene	CH	128.84
toluene	CH(3,5)	128.71
toluene	CH(4)	125.84
carbon dioxide	CO₂	125.69
pyridine	CH(3,5)	124.08
ethylene	CH₂	123.09
imidazole	CH(4,5)	122.20
pyrrole	CH(2,5)	118.03
acetonitrile	CN	116.79
propylene	CH₂	115.74
pyrrole	CH(3,4)	107.74
carbon tetrachloride	CCl₄	96.89
chloroform	CH	79.24
diglyme	CH₂	72.72
DME	CH₂	72.58
18-crown-6	CH₂	71.34
diglyme	CH₂	71.17
1,4-dioxane	CH₂	67.65
tert-butyl alcohol	(CH₃)₃C	67.50
solvent residual signalssolvent	—	67.21
2-propanol	CH	66.14
diethyl ether	CH₂	66.14
ethylene glycol	CH₂	64.35
nitromethane	CH₃	62.49
ethyl acetate	CH₂	60.30
diglyme	CH₃	58.72
DME	CH₃	58.72
ethanol	CH₂	57.60
dichloromethane	CH₂	54.67
methanol	CH₃	49.64
triethylamine	CH₂	47.18
pyrrolidine	CH₂(2,5)	45.82
1,2-dichloroethane	CH₂	44.64
HMPA	CH₃	36.89
dimethylformamide	CH₃	35.65
n-pentane	CH₂(3)	34.87
n-hexane	CH₂(3,4)	32.34
dimethylformamide	CH₃	30.70
tert-butyl alcohol	(CH₃)₃C	30.57
H grease	CH₂	30.45
acetone	CH₃	30.17
cyclohexane	CH₂	27.58
pyrrolidine	CH₂(3,4)	26.17
2-propanol	CH₃	25.70
solvent residual signalssolvent	—	25.31
n-hexane	CH₂(2,5)	23.33
n-pentane	CH₂(2,4)	23.00
toluene	CH₃	21.29
ethyl acetate	CH₃CO	20.45
acetic acid	CH₃	20.13
propylene	CH₃	19.27
ethanol	CH₃	18.90
propane	CH₂	16.82
hexamethylbenzene	CH₃	16.71
propane	CH₃	16.60
diethyl ether	CH₃	15.49
ethyl acetate	CH₃	14.37
n-hexane	CH₃	14.22
n-pentane	CH₃	14.18
triethylamine	CH₃	12.51
ethane	CH₃	6.79
HMDSO	CH₃	1.83
silicone grease	CH₃	1.20
acetonitrile	CH₃	0.45
methane	CH₄	−4.90

Other solvents

Data reproduced from Fulmer et al., Organometallics 2010, 29, 2176-2179. See about for how to read these values.