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preface to fifteenth edition

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8.26 SECTION 8<br />

TABLE 8.8<br />

pK a Values of Organic Materials in Water at 25C (Continued)<br />

Substance pK 1 pK 2 pK 3 pK 4<br />

4-Aminobenzophenone<br />

2.15(1)<br />

2-Aminobenzothiazole (20C) 4.48(1)<br />

2-Aminobenzoylhydrazide 1.85 3.47 12.80<br />

2-Aminobiphenyl3.78(1)<br />

3-Aminobiphenyl4.18(1)<br />

4-Aminobiphenyl4.27(1)<br />

4-Amino-3-bromomethylpyridine 7.47(1)<br />

4-Amino-3-bromopyridine (20C) 7.04(1)<br />

2-Aminobutanoic acid 2.286(1) 9.830(0)<br />

3-Aminobutanoic acid — 10.14(0)<br />

4-Aminobutanoic acid 4.031(1) 10.556(0)<br />

2-Aminobutanoic acid, methyl 7.640(1)<br />

ester ( 0.1)<br />

4-Aminobutanoic acid, methyl 9.838(1)<br />

ester ( 0.1)<br />

D-()-2-Amino-1-butanol9.52(1)<br />

3-Amino-N-butyl-3-methyl-2- 9.09(1)<br />

butanone oxime<br />

4-Aminobutylphosphonic acid 2.55 7.55 10.9<br />

2-Amino-N-carbamoylbutanoic 3.886(1)<br />

acid<br />

4-Amino-N-carbamoylbutanoic 4.683(1)<br />

acid<br />

2-Amino-N-carbamoyl-2-methylpropanoic<br />

4.463<br />

acid<br />

1-Amino-1-cycloheptanecarboxylic 2.59(1) 10.46(0)<br />

acid<br />

1-Amino-1-cyclohexanecarboxylic 2.65(1) 10.03(0)<br />

acid<br />

2-Amino-1-cyclohexanecarboxylic 3.56(1) 10.21(0)<br />

acid<br />

1-Aminocyclopentane<br />

10.65(1)<br />

1-Aminocyclopropane<br />

9.10(1)<br />

10-Aminodecylphosphonic acid — 8.0 11.25<br />

10-Aminodecylsulfonic acid<br />

2.65(1)<br />

1-Amino-2-di(aminomethyl)butane 3.58(3) 8.59(2) 9.66(1)<br />

2-Amino-N,N-dihydroxyethyl-2- 6.484(1)<br />

hydroxyl-1,3-propanediol<br />

2-Amino-N,N-dimethylbenzoic acid 1.63(1) 8.42(0)<br />

4-Amino-2,5-dimethylphenol 5.28(1) 10.40(0)<br />

4-Amino-3,5-dimethylpyridine 9.54(1)<br />

(20C)<br />

12-Aminododecanoic acid<br />

4.648(1)<br />

2-Aminoethane-1-phosphoric acid 5.838 10.64<br />

1-Aminoethanesulfonic acid 0.33 9.06<br />

2-Aminoethanesulfonic acid 1.5 9.061<br />

2-Aminoethanethiol(cysteamine) 8.23(1)<br />

( 0.01)<br />

2-Aminoethanol(ethanolamine) 9.50(1)<br />

2-[2-(2-Aminoethyl)aminoethyl]pyridine<br />

3.50 6.59 9.51<br />

2-Amino-2-ethyl-1-butanol<br />

9.82(1)<br />

3-(2-Aminoethyl)indole — 10.2

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