N,N-di-(ethyl-2-hexyl)isobutyramide

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General infos Separation factors Distribution coefficients Decontamination factors Tests Stability References

Abbreviation(s)

DEHiBA, D2EHIBA

Chemical group

N,N-dialkylamide

Formula

C₂₀H₄₁NO CHON

Molecular mass

311.546 g/mol

Processes

Elements separated

U, [Tc(VII), Np(VI)]

Country of origin

France

Country that has performed tests

France

Separation factors

Factor	Value	Conc.	Aq. acid	Organic diluent	Temp.	Contact time	Additional	Ref.
U/Th	370	1 M	HNO₃ 4 M	n-Dodecane	25°C			[1]
U/Th	3000	0.18 M	HNO₃ 4 M	n-Dodecane	25°C		200 g/L Th	[1]
U/Th	1670	0.5 M	HNO₃ 4 M	n-Dodecane	25°C		200 g/L Th	[1]
U/Th	220	1 M	HNO₃ 4 M	n-Dodecane	25°C		200 g/L Th	[1]
U(VI)/Pu(IV)	≈80	1 M	HNO₃ 3 M	n-Dodecane	25°C	10 min	calculated in the SoA Report (soar-7267)	[2]
U/Zr	134	1 M	HNO₃ 1.0 M	n-Dodecane	25°C	30 min		[3]
U/Zr	793	1 M	HNO₃ 2.0 M	n-Dodecane	25°C	30 min		[3]
U/Zr	1247	1 M	HNO₃ 3.0 M	n-Dodecane	25°C	30 min		[3]
U/Zr	131	1 M	HNO₃ 4.0 M	n-Dodecane	25°C	30 min		[3]
U/Zr	59	1 M	HNO₃ 5.0 M	n-Dodecane	25°C	30 min		[3]
U/Zr	44	1 M	HNO₃ 6.0 M	n-Dodecane	25°C	30 min		[3]
U/Th	120	1 M	HNO₃ 1.0 M	n-Dodecane	25°C	30 min		[3]
U/Th	343	1 M	HNO₃ 2.0 M	n-Dodecane	25°C	30 min		[3]
U/Th	315	1 M	HNO₃ 3.0 M	n-Dodecane	25°C	30 min		[3]
U/Th	370	1 M	HNO₃ 4.0 M	n-Dodecane	25°C	30 min		[3]
U/Th	230	1 M	HNO₃ 5.0 M	n-Dodecane	25°C	30 min		[3]
U/Th	110	1 M	HNO₃ 6.0 M	n-Dodecane	25°C	30 min		[3]

Distribution coefficients

Element	Value	Conc.	Aq. acid	Organic diluent	Temp.	Contact time	Additional	Ref.
U	1.95	1 M	HNO₃ 3 M	n-Dodecane	25°C	2 min		[3]
U	2.01	1 M	HNO₃ 3 M	n-Dodecane	25°C	5 min		[3]
U	2.13	1 M	HNO₃ 3 M	n-Dodecane	25°C	15 min		[3]
U	2.22	1 M	HNO₃ 3 M	n-Dodecane	25°C	30 min		[3]
U	2.16	1 M	HNO₃ 3 M	n-Dodecane	25°C	60 min		[3]
U	2.24	1 M	HNO₃ 3 M	n-Dodecane	25°C	125 min		[3]
U	3.77	1 M	HNO₃ 6 M	n-Dodecane	25°C	2 min		[3]
U	4.08	1 M	HNO₃ 6 M	n-Dodecane	25°C	5 min		[3]
U	4.01	1 M	HNO₃ 6 M	n-Dodecane	25°C	15 min		[3]
U	4.18	1 M	HNO₃ 6 M	n-Dodecane	25°C	30 min		[3]
U	4.18	1 M	HNO₃ 6 M	n-Dodecane	25°C	60 min		[3]
U	4.21	1 M	HNO₃ 6 M	n-Dodecane	25°C	125 min		[3]
U	0.24	0.88 M	HNO₃ 1 M	n-Dodecane	25°C	30 min	Tracer U amounts	[3]
U	1.19	0.65 M	HNO₃ 2 M	n-Dodecane	25°C	30 min	Tracer U amounts	[3]
U	2.37	0.47 M	HNO₃ 3 M	n-Dodecane	25°C	30 min	Tracer U amounts	[3]
U	3.69	0.35 M	HNO₃ 4 M	n-Dodecane	25°C	30 min	Tracer U amounts	[3]
U	4.6	0.26 M	HNO₃ 5 M	n-Dodecane	25°C	30 min	Tracer U amounts	[3]
U	0.22	0.88 M	HNO₃ 1 M	n-Dodecane	25°C	30 min	1g/L U	[3]
U	0.96	0.65 M	HNO₃ 2 M	n-Dodecane	25°C	30 min	1g/L U	[3]
U	2.08	0.47 M	HNO₃ 3 M	n-Dodecane	25°C	30 min	1g/L U	[3]
U	3.17	0.35 M	HNO₃ 4 M	n-Dodecane	25°C	30 min	1g/L U	[3]
U	3.63	0.26 M	HNO₃ 5 M	n-Dodecane	25°C	30 min	1g/L U	[3]
Ce	25000	1 M	HNO₃ 0.01 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Ce	58000	1 M	HNO₃ 0.1 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Ce	52000	1 M	HNO₃ 1.0 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Ce	60000	1 M	HNO₃ 2.0 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Ce	30000	1 M	HNO₃ 3.0 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Ce	51000	1 M	HNO₃ 4.0 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Ce	55000	1 M	HNO₃ 5.0 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Ce	50000	1 M	HNO₃ 6.0 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Zr	<1	1 M	HNO₃ 0.01 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Zr	6	1 M	HNO₃ 0.1 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Zr	450	1 M	HNO₃ 1.0 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Zr	480	1 M	HNO₃ 2.0 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Zr	580	1 M	HNO₃ 3.0 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Zr	480	1 M	HNO₃ 4.0 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Zr	370	1 M	HNO₃ 5.0 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Zr	250	1 M	HNO₃ 6.0 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Eu	19000	1 M	HNO₃ 0.01 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Eu	12000	1 M	HNO₃ 0.1 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Eu	21000	1 M	HNO₃ 1.0 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Eu	10000	1 M	HNO₃ 2.0 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Eu	28000	1 M	HNO₃ 3.0 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Eu	36000	1 M	HNO₃ 4.0 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Eu	77000	1 M	HNO₃ 5.0 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Eu	71000	1 M	HNO₃ 6.0 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Fe	1800	1 M	HNO₃ 0.01 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Fe	2100	1 M	HNO₃ 0.1 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Fe	1100	1 M	HNO₃ 1.0 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Fe	1300	1 M	HNO₃ 2.0 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Fe	4700	1 M	HNO₃ 3.0 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Fe	1300	1 M	HNO₃ 4.0 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Fe	9200	1 M	HNO₃ 5.0 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Fe	9200	1 M	HNO₃ 6.0 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Cs	2300	1 M	HNO₃ 0.01 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Cs	3000	1 M	HNO₃ 0.1 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Cs	2400	1 M	HNO₃ 1.0 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Cs	2400	1 M	HNO₃ 2.0 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Cs	2100	1 M	HNO₃ 3.0 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Cs	2700	1 M	HNO₃ 4.0 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Cs	3000	1 M	HNO₃ 5.0 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Cs	1400	1 M	HNO₃ 6.0 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Ce	40000	1 M	HNO₃ 0.01 M	n-Dodecane	25°C	30 min	250g/L Th; Tracer Ce amounts	[3]
Ce	30000	1 M	HNO₃ 0.1 M	n-Dodecane	25°C	30 min	250g/L Th; Tracer Ce amounts	[3]
Ce	29000	1 M	HNO₃ 1.0 M	n-Dodecane	25°C	30 min	250g/L Th; Tracer Ce amounts	[3]
Ce	72000	1 M	HNO₃ 2.0 M	n-Dodecane	25°C	30 min	250g/L Th; Tracer Ce amounts	[3]
Ce	43000	1 M	HNO₃ 3.0 M	n-Dodecane	25°C	30 min	250g/L Th; Tracer Ce amounts	[3]
Ce	61000	1 M	HNO₃ 4.0 M	n-Dodecane	25°C	30 min	250g/L Th; Tracer Ce amounts	[3]
Ce	52000	1 M	HNO₃ 5.0 M	n-Dodecane	25°C	30 min	250g/L Th; Tracer Ce amounts	[3]
Ce	31000	1 M	HNO₃ 6.0 M	n-Dodecane	25°C	30 min	250g/L Th; Tracer Ce amounts	[3]
Zr	10000	1 M	HNO₃ 0.1 M	n-Dodecane	25°C	30 min	250g/L Th; Tracer Zr amounts	[3]
Zr	1800	1 M	HNO₃ 1.0 M	n-Dodecane	25°C	30 min	250g/L Th; Tracer Zr amounts	[3]
Zr	1500	1 M	HNO₃ 2.0 M	n-Dodecane	25°C	30 min	250g/L Th; Tracer Zr amounts	[3]
Zr	1900	1 M	HNO₃ 3.0 M	n-Dodecane	25°C	30 min	250g/L Th; Tracer Zr amounts	[3]
Zr	28000	1 M	HNO₃ 4.0 M	n-Dodecane	25°C	30 min	250g/L Th; Tracer Zr amounts	[3]
Zr	78000	1 M	HNO₃ 5.0 M	n-Dodecane	25°C	30 min	250g/L Th; Tracer Zr amounts	[3]
Zr	100000	1 M	HNO₃ 6.0 M	n-Dodecane	25°C	30 min	250g/L Th; Tracer Zr amounts	[3]
Th	0.0015	1 M	HNO₃ 0.01 M	n-Dodecane	25°C	30 min	Tracer Th amounts	[3]
Th	0.04	1 M	HNO₃ 6.0 M	n-Dodecane	25°C	30 min	Tracer Th amounts	[3]
Th	0.0045	1 M	HNO₃ 0.01 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
Th	0.037	1 M	HNO₃ 6.0 M	n-Dodecane	25°C	30 min	250g/L Th	[3]
U	1.2	0.18 M	HNO₃ 4 M	n-Dodecane	25°C		200 g/L Th	[3]
U	4	0.5 M	HNO₃ 4 M	n-Dodecane	25°C		200 g/L Th	[3]
U	6	1 M	HNO₃ 4 M	n-Dodecane	25°C		200 g/L Th	[3]
Th	0.0004	0.18 M	HNO₃ 4 M	n-Dodecane	25°C		200 g/L Th	[3]
Th	0.0024	0.5 M	HNO₃ 4 M	n-Dodecane	25°C		200 g/L Th	[3]
Th	0.027	1 M	HNO₃ 4 M	n-Dodecane	25°C		200 g/L Th	[3]
U	3.7	1 M	HNO₃ 4 M	n-Dodecane	25°C			[3]
Th	0.01	1 M	HNO₃ 4 M	n-Dodecane	25°C			[3]
U(VI)	2.73	1 M	HNO₃ 3 M	n-Dodecane	25°C	10 min		[3]
Np(VI)	1.23	1 M	HNO₃ 3 M	n-Dodecane	25°C	10 min		[3]
Pu(IV)	0.034	1 M	HNO₃ 3 M	n-Dodecane	25°C	10 min		[3]
Np(IV)	<0.01	1 M	HNO₃ 3 M	n-Dodecane	25°C	10 min		[3]
Am(VI)	≈0.01	1 M	HNO₃ 2 M	n-Dodecane	23°C	10 s		[4]
Am(VI)	≈0.15	1 M	HNO₃ 3 M	n-Dodecane	23°C	10 s		[4]
Am(VI)	≈0.4	1 M	HNO₃ 4 M	n-Dodecane	23°C	10 s		[4]
Am(VI)	≈1	1 M	HNO₃ 5 M	n-Dodecane	23°C	10 s		[4]
Am(VI)	≈2	1 M	HNO₃ 6 M	n-Dodecane	23°C	10 s		[4]
Am(VI)	≈2	1 M	HNO₃ 7 M	n-Dodecane	23°C	10 s		[4]
U(VI)	≈3.3	1 M	HNO₃ 4 M	n-Dodecane	23°C	10 s		[4]
U(VI)	≈4.3	1 M	HNO₃ 5 M	n-Dodecane	23°C	10 s		[4]
U(VI)	≈4.1	1 M	HNO₃ 6 M	n-Dodecane	23°C	10 s		[4]
U(VI)	≈4	1 M	HNO₃ 7 M	n-Dodecane	23°C	10 s		[4]
Np(VI)	≈2.6	1 M	HNO₃ 4 M	n-Dodecane	23°C	10 s		[4]
Np(VI)	≈3.5	1 M	HNO₃ 5 M	n-Dodecane	23°C	10 s		[4]
Np(VI)	≈3.8	1 M	HNO₃ 6 M	n-Dodecane	23°C	10 s		[4]
Np(VI)	≈3.9	1 M	HNO₃ 7 M	n-Dodecane	23°C	10 s		[4]
Pu(IV)	≈0.85	1 M	HNO₃ 4 M	n-Dodecane	23°C	10 s		[4]
Pu(IV)	≈1.2	1 M	HNO₃ 5 M	n-Dodecane	23°C	10 s		[4]
Pu(IV)	≈1.8	1 M	HNO₃ 6 M	n-Dodecane	23°C	10 s		[4]
Pu(IV)	≈2.1	1 M	HNO₃ 7 M	n-Dodecane	23°C	10 s		[4]
Ce(IV)	≈0.36	1 M	HNO₃ 2 M	n-Dodecane	23°C	10 s		[4]
Ce(IV)	≈0.9	1 M	HNO₃ 3 M	n-Dodecane	23°C	10 s		[4]
Ce(IV)	≈1.5	1 M	HNO₃ 4 M	n-Dodecane	23°C	10 s		[4]
Ce(IV)	≈1.6	1 M	HNO₃ 5 M	n-Dodecane	23°C	10 s		[4]
Ce(IV)	≈1.5	1 M	HNO₃ 6 M	n-Dodecane	23°C	10 s		[4]
Ce(IV)	≈1	1 M	HNO₃ 7 M	n-Dodecane	23°C	10 s		[4]

Decontamination factors

Element	Value	Conc.	Add. ligand	Aq. acid	Organic diluent	Additional	Stages	Ref.
Th	1200	0.5 M	TBP 5 %	HNO₃ 4 M	n-dodecane	THOREX feed solution	12	[5]
Np	>300	1 M		HNO₃ 6 M	hydrogenated tetrapropylene	70 GWd/t; 6 years of cooling; hot tests	12	[6]
Pu	4100	1 M		HNO₃ 6 M	hydrogenated tetrapropylene	70 GWd/t; 6 years of cooling; hot tests	12	[6]
Tc	41	1 M		HNO₃ 6 M	hydrogenated tetrapropylene	70 GWd/t; 6 years of cooling; hot tests	12	[6]
Ru106	>15000	1 M		HNO₃ 6 M	hydrogenated tetrapropylene	70 GWd/t; 6 years of cooling; hot tests	12	[6]
Cs137	>35000	1 M		HNO₃ 6 M	hydrogenated tetrapropylene	70 GWd/t; 6 years of cooling; hot tests	12	[6]

Tests

Test carried out	Test type	Conditions	Ref.
HLW hot test, 28 mixer settlers, lab scale			[7]

Stability

Type of study	Conditions	Ref.
Radiolysis	40 Gy, 0.5M DEHiBA in n-dodecane	[7]
Hydrolysis		[8]
Radiolysis		[8]

References

doi:10.1016/j.seppur.2003.09.005
https://inis.iaea.org/collection/NCLCollectionStore/_Public/36/010/36010983.pdf
doi:10.1081/SS-100100793
doi:10.1021/acs.iecr.7b01181
10.1016/j.seppur.2003.09.005
https://www.researchgate.net/publication/285969277_HA_demonstration
https://www.researchgate.net/publication/285969277_HA_demonstration_in_the_Atalante_facility_of_the_Ganex_1st_cycle_for_the_selective_extraction_uranium_from_HLW
CEA