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Properties of Buffer
Name Formula CAS Number MW PH range PKa 20C PKa  25C PKa 37C
Glycine-HCl C2H6NO2Cl 2.2-3.6 PK1=2.35; PK2=9.60
Sodium acetate 3.6-5.6 4.76
MES, 2-(N-morpholino) ethanesulfonic acid C6H13NO4S 4432-31-9 195.24 5.5-6.7 6.10 6.10 5.97
Bis-Tris, Bis(2-hydroxyyethyl)-amino-tris (hydroxymethyl)- methane C8H19NO5 6976-37-0 209.24 5.8-7.2 6.5 6.36
ADA, N-(2-acetamino) iminodiacetic acid C6H10N2O5 26239-55-4 190.15 6.0-7.2 6.65 6.59 6.46
ACES, N-(2-acetamido)-2-aminoethanesulfonic acid C4H10N2O4S 7365-82-4 182.2 6.1-7.5 6.88 6.78 6.54
PIPES, Piperzaine-1,4-bis(2-ethanesulfonic acid) C8H18N2O6S2 5625-37-6 302.37 6.1-7.5 6.8 6.76 6.66
MOPSO, 3-(morpholino)-2-hydroxypropanesulfonic acid C7H15NO5S 68399-77-9 225.26 6.2-7.6 6.9 6.75
Bis-Tris Propane, 1,3-bis(tris(hydroxymethyl) methylamino) propane C11H26N2O6 64431-96-5 282.34 6.3-9.5 6.8,9.0
BES, N,N-bis(2-hydroxyethyl)-2-aminoethanesulfonic acid C6H15NO5S 10191-18-1 213.25 6.4-7.8 7.17 7.09 6.9
MOPS,3-(N-Morpholino)-propanesufonic acid C7H15NO4S 1132-61-2 209.3 6.5-7.9 7.13 7.2 7.7
TES, N-tris(hydroxymethyl)methyl-2-aminoethanesulfonic acid C6H15NO6S 7365-44-8 229.25 6.8-8.2 7.5 7.4 7.16
HEPES, N-2-hydroxyethylpiperazine-N'-2-ethanesulfonic acid C8H18N2O4S 7365-45-9 238.31 6.8-8.2 7.55 7.48 7.31
Dipso, 3-[N,N-bis(2-hydroxyethyl)amino]-2-hydroxypropanesulfonic acid C7H17NO6S 68399-80-4 243.38 7.0-8.2 7.6 7.35
Mobs, 4-(N-morpholino)butanesulfonic acid C8H17O4S 115724-21-5 223.3 6.9-8.3 7.6
Tapso, 2-Hydroxy-N-(tris(hydroxymethyl)methyl)-3-aminopropanesulfonic acid C7H17NO7S 68399-81-5 259.28 7.0-8.2 7.6 7.39
TRIZMA, [2-hydroxy-1,1-bis(hydroxymethyl)ethyl) amine C4H11NO3 77-86-1 121.13504 7.0-9.0 8.2 8.06 7.72
HEPPSO,N-(2-Hydroxyethyl)piperazine-N'-2- hydroxypropanesulfonic acid C9H20N2O5S 68399-78-0 268.2 7.1-8.5 7.8 6.66
POPSO, 1,4-Piperazinedipropanesulfonic acid C10H22N2O8S2 68189-43-5
362.4 7.2-8.5 7.8 7.63
TEA, triethanolamine C6H15NO3 102-71-6 149.188 7.3-8.3 7.8
EPPS,[2-hydroxyethyl]piperazine-n’-[3-propancesulfonic acid] C9H20N2O4S 16052-06-5 252.33 7.3-8.7 8.0
TRICINE, N-(Tri(hydroxymethyl)methyl)glycine C6H13NO5 5704-04-1 179.17 7.4-8.8 8.16 8.05 7.80
GLYCYLGLYCINE C4H8N2O3 556-50-3 132.12 7.5-8.9 8.2
BICINE, Diethylolglycine (HOCH2CH2)2NCH2COOH 150-25-4 163.17 7.6-9.0 8.35 8.26 8.04
HEPBS, N-(2-Hydroxyethyl)piperazine-N'(4-butanesulfonic acid C10H22N2O4S 161308-36-7 266.4 7.6-9.0 8.3
TAPS, N-Tris(hydroxymethyl)methyl-3-aminopropanesulfonic Acid C7H19NO6S 29915-38-6 245.29 7.7-9.1 8.31 8.4 8.90
AMPD, 2-Amino-2-methyl-1,3-propandiol (HOCH2)2C(NH2)CH3 115-69-5 105.14 7.8-9.7 8.8
TABS, N-tris(hydroxymethyl)-4-aminobutanesulfonic acid C8H19NO6S 54960-65-5 257.30 8.2-9.6 8.9
AMPSO, N-(1,1-Dimethyl-2-hydroxyethyl)-3-amino-2-hydroxypropanesulfonic acid C7H17NO5S 68399-79-1 227.28 8.3-9.7 9 9.1
CHES, 2-(Cyclohexylamino)ethanesulfonic acid C8H17NO3S 103-47-9 207.29 8.6-10 9.3 9.8
CAPSO, 3-(Cyclohexylamino)-2-hydroxy-1-propanesulfonic acid C9H19NO4S 73463-39-5 237.32 8.9-10.3 9.6 9.43
AMP, β-Aminoisobutyl alcohol hydrochloride NH2C(CH3)2CH2OHHCl 3207-12-3 125.6 9.0-10.5 9.7
CAPS, 3-(Cyclohexylamino)-1-propanesulfonic acid C6H11NH(CH2)3SO3H 1135-40-6 221.32 9.7-11.1 10.24 10.4 10.78
CABS, 4-(Cyclohexylamino)-1-butanesulfonic acid           C10H21NO3S                 161308-34-5 235.34 10.0-11.4               10.7        

Reference:
1. Sigma-aldrich,
2. D.M. Porterfield, E.s.McLamore, M.K. Banks; Sensors and Acuators B 136: chemical, 2009, p383-387