Buffer pKa and pH Range Values - Animal Science

Buffer pKa and pH Range Values

Buffers

Hydrochloric Acid - HCl

Nitric Acid - HNO 3

Perchloric Acid ? HClO 4

Potassium Chloride ? KCl

Oxalic Acid ? C H O 224

Sodium Oxalate ? C Na O 2 24

Potassium Tetraxalate

Maleic Acid ? C H O 444

Phosphoric Acid ? H PO 34

Potassium Phosphate, Monobasic ? H KO P 24

Potassium Phosphate, Dibasic ? HK PO 24

Potassium Phosphate, Tribasic ? K3PO4

Sodium Phosphate, Monobasic ? H NaPO

2

4

Sodium Phosphate, Dibasic ? HNa PO 24

Sodium Phosphate, Tribasic ? Na PO 34

Glycine ? C H NO 25 2

Monochloroacetic Acid ? C H ClO

23

2

Chloroacetic Acid, Sodium Salt

Phthalic Acid ? C H O 864

Potassium Bipthalate

d-Tartaric Acid ? C H O 466

Potassium Tartrate ? C H K O 4426

Citric Acid ? C H O 687

Potassium Citrate ? C H K O 6537

Formic Acid ? CH O 22

Sodium Formate ? CHNaO 2

pKa

1.3, 4.3 1.9, 6.2 2.1, 7.2, 12.4

2.4, 9.7 2.8 2.9, 5.4 3.0, 4.4 3.1, 4.8, 6.4 3.8

For preparation of Buffers in the pH

range 0-2

1.1-1.8 0.3-5.3

0.9-2.9, 5.2-7.2 1.1-3.1, 6.2-10.1

1.4-3.4, 8.7-10.7 1.8-3.8 1.9-6.4 2.0-5.4 2.1-7.4 2.8-4.8

Buffer pKa and pH Range Values Continued

Buffers

pKa

Succinic Acid ? C H O 464

4.2, 5.6

Acetic Acid ? C H O

4.6

242

Sodium Acetate ? C H NaO

23

2

Ammonium Acetate ? C H NO 27 2

4.6(Acetic Acid)

9.3(Ammonium Hydroxide)

Hexamethylenetetramine ? C H N

5.1

6 12 4

Pyridine ? C H N

5.2

55

(Carbonic Acid) ? CH O 23

6.3, 10.3

Sodium Bicarbonate ? CHNaO 3

Sodium Carbonate ? CNa O 23

Potassium Bicarbonate ? CHKO 3

Potassium Carbonate ? CK O 23

Ethylenediamine ? C2H8N2

7.4, 10.2

Imidazole ? C H N

7.5

332

Triethanolamine ? C H NO

7.8

6 15 3

TRIS Hydrochloride ? C H ClNO

4 12

3

HEPES (4-(2-Hydroxyethyl)-1-piperazineethanesulfonic Acid) 0 C H N SO 8 18 2 4

2-Amino-2-methyl-1,2-propanediol. (AMP) ? C H NO 8.8 4 11

Boric Acid ? H BO

9.2

33

Sodium Borate ? B Na O 4 27

Ammonium Hydroxide ? H NO

9.3

5

Ammonium Chloride ? ClH N 4

Diethylamine ? C H N

11.0

4 11

Calcium Hydroxide ? CaO H 22

Potassium Hydroxide, 45% soln - KHO

Sodium Hydroxide, 50% soln - NaOH

For preparation of Buffers in the pH

Range 3.2-6.6 3.6-5.6

6-8 4.1-6.1 4.2-6.2 5.3-7.3, 9.3-11.3

6.4-8.4, 9.2-11.2 6.5-8.5 6.8-8.8

7.8-9.8 8.2-10.2

8.3-10.3

10.0-12.0 12.4 (sat. soln) 12-14

 ................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download