GOOD'S BUFFERS

Good's buffer

 CAS RN

Useful pH Range

pKa (20 C)

N-(2-Acetamido)-2-aminoethanesulfonic acid (ACES) 7365-82-4

6.1 - 7.5

6.8

N-(2-(Acetamido)imino)diacetic acid disodium salt (ADA disodium) 41689-31-0

6.0 - 7.2

6.6

N-(2-(Acetamido)imino)diacetic acid (ADA)) 26239-55-4

6.0 - 7.2

6.6

2-(Bis(2-hydroxyethyl)amino)ethanesulfonic acid sodium salt (BES sodium) 66992-27-6

6.4 - 7.8

7.1

2-(Bis(2-hydroxyethyl)amino)ethanesulfonic acid (BES) 10191-18-1

6.4 - 7.8

7.1

Bis(2-Hydroxyethyl)glycine (BICINE) 150-25-4

7.6 - 9.0

8.3

2-Bis(2-hydroxyethyl)amino-2-(hydroxymethyl)-1,3-propanediol (BIS-TRIS hydrochloride)

124763-51-5

5.8 - 7.2

6.5

1,3-Bis[tris(hydroxymethyl)methylamino]propane (BIS-TRIS propane)

64431-96-5

6.3 - 9.5

6.8

2,2-Bis(hydroxymethyl)-2,2',2''-nitrilotriethanol (BIS-TRIS) 6976-37-0

5.8 - 7.2

6.5

3-(Cyclohexylamino)-1-propanesulfonic acid (CAPS) 1135-40-6

9.7 - 11.1

10.4

3-(Cyclohexylamino)-2-hydroxy-1-propanesulfonic acid Sodium salt (CAPSO sodium) 102601-34-3

8.9 - 10.3

9.6

3-(Cyclohexylamino)-2-hydroxy-1-propanesulfonic acid (CAPSO anhydrous) 73463-39-5

8.9 - 10.3

9.6

3-(Cyclohexylamino)-1-propanesulfonic acid (CAPS) 1135-40-6

9.7 - 11.1

10.4

2-(N-Cyclohexylamino)ethanesulfonic acid (CHES) 103-47-9

8.6 - 10.0

9.3

3-[N-Bis(hydroxyethyl)amino]-2-hydroxypropanesulfonic acid (DIPSO) 68399-80-4

7.0 - 8.2

7.6

4-(2-Hydroxyethyl)piperazine-1-propanesulfonic acid (EPPS) 16052-06-5

7.3 - 8.7

8

N-Glycylglycine (Gly-Gly) 556-50-3

7.5 - 8.9

8.2

N-(2-Hydroxyethyl)piperazine-N'-(4-butanesulfonic acid) (HEPBS) 161308-36-7

7.6 - 9.0

8.3

4-(2-Hydroxyethyl)-1-piperazineethanesulfonic acid (HEPES) 7365-45-9

6.8 - 8.2

7.55

4-(2-Hydroxyethyl)-1-piperazineethanesulfonic acid Hemisodium salt (HEPES Sodium) 103404-87-1

6.8 - 8.2

7.5

4-(2-Hydroxyethyl)-1-piperazineethanesulfonic acid Potassium salt (HEPES Potassium) 82207-62-3

6.8 - 8.2

7.5

4-(2-Hydroxyethyl)-1-piperazineethanesulfonic acid Sodium salt Hydrate (HEPES Sodium Hydrate) 75277-39-3

6.8 - 8.2

7.5

N-(Hydroxyethyl)piperazine-N'-2-hydroxypropanesulfonic acid Hydrate (HEPPSO Hydrate) 68399-78-0

7.1 - 8.5

7.5

2-(N-Morpholino)ethanesulfonic acid hemisodium salt (MES hemisodium) 117961-21-4

5.5 - 6.7

6.1

2-(N-Morpholino)ethanesulfonic acid (MES) 4432-31-9

5.5 - 6.7

6.1

2-(N-Morpholino)ethanesulfonic acid potassium salt (MES potassium) 39946-25-3

5.5 - 6.7

6.1

2-(N-Morpholino)ethanesulfonic acid sodium salt (MES sodium) 71119-23-8

5.5 - 6.7

6.1

2-(N-Morpholino)ethanesulfonic acid (MES) 4432-31-9

5.5 - 6.7

6.1

4-(N-Morpholino)butanesulfonic acid (MOBS) 115724-21-5

6.9 - 8.3

7.6

Morpholinopropane sulfonic acid hemisodium salt (MOPS hemisodium) 117961-20-3

6.5 - 7.9

7.2

Morpholinopropane sulfonic acid sodium salt (MOPS sodium) 71119-22-7

6.5 - 7.9

7.2

Morpholinopropane sulfonic acid (MOPS) 1132-61-2

6.5 - 7.9

7.2

2-Hydroxy-4-morpholinepropanesulphonic acid sodium salt (MOPSO sodium) 79803-73-9

6.2 - 7.6

6.9

2-Hydroxy-4-morpholinepropanesulphonic acid (MOPSO) 68399-77-9

6.2 - 7.6

6.9

Piperazine-N,N'-bis(2-ethanesulfonic acid) dipotassium salt (PIPES dipotassium) 108321-27-3

6.1 - 7.5

6.8

Piperazine-N,N'-bis(2-ethanesulfonic acid) disodium salt (PIPES disodium) 76836-02-7

6.1 - 7.5

6.8

Piperazine-N,N'-bis(2-ethanesulfonic acid) sesquisodium salt (PIPES sesquisodium) 100037-69-2

6.1 - 7.5

6.8

Piperazine-N,N'-bis(2-ethanesulfonic acid) sodium salt (PIPES sodium) 10010-67-0

6.1 - 7.5

6.8

Piperazine-N,N'-bis(2-ethanesulfonic acid) (PIPES) 5625-37-6

6.1 - 7.5

6.8

Piperazine-N,N'-bis(2-hydroxypropanesulfonic acid sesquisodium salt (POPSO sesquisodium) 108321-08-0

7.2 - 8.5

7.8

Piperazine-N,N'-bis(2-hydroxypropanesulfonic acid (POPSO) 68189-43-5

7.2 - 8.5

7.8

N-Tris(Hydroxymethyl)methyl-4-aminobutanesulfonic acid (TABS) 54960-65-5

8.2 - 9.6

8.9

3-(Tris(hydroxymethyl)methylamino)-1-propanesulfonic acid sodium salt (TAPS Sodium) 91000-53-2

7.7 - 9.1

8.4

3-(Tris(hydroxymethyl)methylamino)-1-propanesulfonic acid (TAPS) 29915-38-6

7.7 - 9.1

8.4

3-N-(2-Hydroxy-1,1-bis(hydroxymethyl)ethylamino)-2-hydroxypropanesulfonic acid sodium salt (TAPSO sodium) 105140-25-8

7.0 - 8.2

7.6

3-N-(2-Hydroxy-1,1-bis(hydroxymethyl)ethylamino)-2-hydroxypropanesulfonic acid (TAPSO) 68399-81-5

7.0 - 8.2

7.6

3-(Tris(hydroxymethyl)methylamino)-1-propanesulfonic acid (TAPS) 29915-38-6

7.7 - 9.1

8.4

N-Tris(hydroxymethyl)methyl-2-aminoethanesulfonic acid sodium salt (TES Sodium) 70331-82-7

6.8 - 8.2

7.5

N-Tris(hydroxymethyl)methyl-2-aminoethanesulfonic acid (TES) 7365-44-8

6.8 - 8.2

7.5

Tricine 5704-04-1

7.4 - 8.8

8.1

Tromethamine 77-86-1

7.0 - 9.0

8.1

Tromethamine hydrochloride 1185-53-1

7.0 - 9.0

8.1