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preface to fifteenth edition

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TABLE 11.13<br />

McReynolds’ Constants for Stationary Phases in Gas Chroma<strong>to</strong>graphy<br />

Stationary phase<br />

Chemical type<br />

Similar stationary<br />

phases<br />

Min<br />

Temp., C<br />

Max<br />

McReynolds’ constants<br />

x’ y’ z’ u’ s’ <br />

USP<br />

code<br />

Squalane<br />

Boiling-point separation of broad molecular weight range of compounds; nonpolar phases<br />

20 150 0 0 0 0 0 0<br />

Paraffin oil 9 5 2 6 11 33<br />

Apiezon L 50 300 32 22 15 32 42 143<br />

SPB-1 Poly(dimethylsiloxane) SA-1, DB-1 60 320 4 58 43 56 38 199<br />

SP-2100 Poly(dimethylsiloxane) DC-200, SE 30, UC<br />

W98, DC 200<br />

0 350 17 57 45 67 43 229 G 9<br />

2,6,10,15,19,23-Hexamethyltetracosane<br />

OV-1 Methylsiloxane gum 100 350 16 55 44 65 42 227 G 2<br />

OV-101 Methylsiloxane fluid 20 350 17 57 45 67 43 234 G 1<br />

SPB-5<br />

1% Vinyl, 5% phenyl SA-5, DB-5 60 320 19 74 64 93 62 312<br />

methyl polysiloxane<br />

SE-54<br />

1% Vinyl, 5% phenyl PTE-5 50 300 19 74 64 93 62 312 G 36<br />

methyl polysiloxane<br />

SE-52<br />

5% Phenyl methyl<br />

50 300 32 72 65 98 67 334 G 27<br />

polysiloxane<br />

OV-73<br />

5.5% Phenyl methyl SP-400 0 325 40 86 76 114 85 401 G 27<br />

polysiloxane<br />

OV-3<br />

Poly(dimethyldiphenylsiloxane);<br />

0 350 44 86 81 124 88 423<br />

90%:10%<br />

Dexsil 300<br />

Carborane9methyl<br />

50 450 47 80 103 148 96 474 G 33<br />

silicone<br />

Dexsil 400<br />

Carborane9methylphenyl<br />

silicone<br />

50 400 72 108 118 166 123 587<br />

11.21

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