Tween® 20 Detergent

Type	Non-ionic
Molecular Weight	1227
Molecular Formula	C₁₈H₃₄O₆•[C₂H₄O]_w+x+y+z for w+x+y+z =20
Absorbance	(215 nm) 0.05
Critical Micelle Concentration (CMC) ^(?)	0.06
Aldehyde content	<100µM
Peroxide content (as H₂O₂)	<50µM
Cloud Point	76°C
Applications	Tween® 20 is used for solubilizing membrane proteins during the isolation of membrane-protein complexes.
Chemical Structure

List of detergents

Detergent Name	CMC	Type
ASB-14	8	Zwitterionic
ASB-14-4	-	Zwitterionic
ASB-16	8	Zwitterionic
ASB-C7BzO	-	Zwitterionic
ASB-C8ø	-	Zwitterionic
Big CHAP	3.4	Non-ionic
Brij® 35	0.09	Non-ionic
Brij® 58	0.007-0.077	Non-ionic
C₁₂E₈	0.11	Non-ionic
CHAPS	6-10	Zwitterionic
CHAPSO	8	Zwitterionic
CTAB	1	Cationic
Cyclohexyl-n-hexyl-β-D-maltoside	0.56	Non-ionic
DDMAB	4.3	Zwitterionic
Deoxy Big CHAP	1.1-1.4	Non-ionic
Deoxycholate	4-8	Anionic
Digitonin	0.2-0.73	Non-ionic
HECAMEG	19.5	Non-ionic
MEGA 10	6-7	Non-ionic
MEGA 8	58	Non-ionic
MEGA 9	19-25	Non-ionic
n-Decanoylsucrose	2.5	Non-ionic
n-Decyl-β-D-maltopyranoside	1.6	Non-ionic
n-Dodecanoylsucrose	0.3	Non-ionic
n-Dodecyl-β-D-glucopyranoside	0.13	Non-ionic
n-Dodecyl-β-D-maltoside	0.1-0.6	Non-ionic
n-Heptyl-β-D-glucopyranoside	79	Non-ionic
n-Heptyl-β-D-thioglucopyranoside	30	Non-ionic
n-Hexyl-β-D-glucopyranoside	250	Non-ionic
n-Nonyl-β-D-glucopyranoside	6.5	Non-ionic
n-Octanoylsucrose	24.4	Non-ionic
n-Octyl-β-D-glucopyranoside	20-25	Non-ionic
n-Octyl-β-D-maltopyranoside	23.4	Non-ionic
n-Octyl-β-D-thioglucopyranoside	9	Non-ionic
Nonidet® P-40 Substitute	0.05-0.3	Non-ionic
Octyl β Glucoside	20-25	Non-ionic
SDS	7-10	Anionic
Sulfobetaine 3-10 (SB 3-10)	25-40	Zwitterionic
Sulfobetaine 3-12 (SB 3-12)	2-4	Zwitterionic
Sulfobetaine 3-14 (SB 3-14)	0.1-0.4	Zwitterionic
Triton® X-100	0.2	Non-ionic
Triton® X-114	0.35	Non-ionic
Tween® 20	0.06	Non-ionic
Tween® 80	0.012	Non-ionic
ZWITTERGENT® 3-10	25-40	Zwitterionic
ZWITTERGENT® 3-12	2-4	Zwitterionic
ZWITTERGENT® 3-14	0.1-0.4	Zwitterionic
ZWITTERGENT® 3-16	0.01-0.06	Zwitterionic

References

This online resource may be cited as follows

MLA	"Quest Database™ Tween® 20 Detergent." AAT Bioquest, Inc., 16 Nov. 2025, https://www.aatbio.com/resources/biological-detergents-properties-and-applications/tween-20.
APA	AAT Bioquest, Inc. (2025, November 16). Quest Database™ Tween® 20 Detergent. AAT Bioquest. https://www.aatbio.com/resources/biological-detergents-properties-and-applications/tween-20.
BibTeX	EndNote	RefMan