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preface to fifteenth edition

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8.40 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 />

2,5-Dichloro-3,6-dihydroxy-p-benzoquinone<br />

1.09 2.42<br />

Dichloromethylphosphonic acid 1.14 5.61<br />

2,4-Dichloro-6-nitroaniline<br />

3.00(1)<br />

2,5-Dichloro-4-nitroaniline<br />

1.74(1)<br />

2,6-Dichloro-4-nitroaniline<br />

3.31(1)<br />

2,3-Dichlorophenol 7.44<br />

2,4-Dichlorophenol 7.85<br />

2,6-Dichlorophenol 6.78<br />

3,4-Dichlorophenol 8.630<br />

3,5-Dichlorophenol 8.179<br />

2,4-Dichlorophenoxyacetic acid 2.64<br />

(2,4-D)<br />

4,6-Dichlorophenoxy-2-methylacetic<br />

3.13<br />

acid<br />

3,6-Dichlorophthalic acid 1.46<br />

2,2-Dichloropropanoic acid 2.06<br />

2,3-Dichloropropanoic acid 2.85<br />

rac-2,3-Dichlorosuccinic acid 1.43 2.81<br />

(20C)<br />

meso-2,3-Dichlorosuccinic acid 1.49 2.97<br />

3,5-Dichloro-p-tyrosine 2.12 6.47 7.62<br />

2-Dicyanoethylamine<br />

5.14(1)<br />

2,2-Dicyanopropanoic acid 2.8<br />

Dicyclohexylamine<br />

11.25(1)<br />

Dicyclopentylamine<br />

10.93(1)<br />

Didodecylamine<br />

10.99(1)<br />

Diethanolamine<br />

8.88(1)<br />

Di(ethoxyethyl)amine<br />

8.47(1)<br />

3,5-Diethoxyphenol9.370<br />

3-(Diethoxyphosphinyl)benzoic 3.65<br />

acid<br />

4-(Diethoxyphosphinyl)benzoic 3.60<br />

acid<br />

3-(Diethoxyphosphinyl)phenol 8.66<br />

4-(Diethoxyphosphinyl)phenol 8.28<br />

Diethylamine<br />

10.8(1)<br />

2-(Diethylamino)ethyl-4-aminobenzoate<br />

8.85(1)<br />

-(Diethylamino)<strong>to</strong>luene<br />

9.44(1)<br />

N,N-Diethylaniline<br />

6.56(1)<br />

5,5-Diethylbarbituric acid (veronal) 8.020(0)<br />

N,N-Diethylbenzylamine<br />

9.48(1)<br />

Diethylbiguanide (30C) 2.53(1) 11.68(0)<br />

Diethylenetriamine 4.42(3) 9.21(2) 10.02(1)<br />

Diethylenetriaminepentaacetic acid 1.80(0) 2.55(1) 4.33(2) 8.60(3)<br />

(pK 5 , 10.58)<br />

N,N-Diethylethylenediamine 7.70(2) 10.46(1)<br />

2,2-Diethylglutaric acid 3.62 7.12<br />

N,N-Diethylglycine 2.04(1) 10.47(0)<br />

Diethylglycolic acid (18C) 3.804<br />

Diethylmalonic acid 2.151 7.417<br />

Diethylmethylamine<br />

10.43(1)<br />

rac-2,3-Diethylsuccinic acid 3.63 6.46

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