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preface to fifteenth edition

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PRACTICAL LABORATORY INFORMATION 11.73<br />

TABLE 11.26<br />

HeatingTemperatures, Composition of WeighingForms, and Gravimetric Fac<strong>to</strong>rs (Continued)<br />

Element<br />

Thermal stability<br />

range, C<br />

Final heating<br />

temperature, C<br />

Composition of<br />

weighing form<br />

Gravimetric fac<strong>to</strong>rs<br />

Co 285–946 750–850 Co 3 O 4 Co: 0.7342<br />

130 Co(C 10 H 6 NO 2 ) 3 ·2H 2 O Co: 0.09639; CoO: 0.1226<br />

450–500 CoSO 4 Co: 0.3802<br />

Cr 120 PbCrO 4 Cr: 0.1609<br />

Cu 105–120 CuSCN Cu: 0.5225; CuO: 0.6540<br />

115 100–105 Cu(C 7 H 5 NO 2 ) 2 Cu: 0.1891<br />

105–115 Cu(C 13 H 11 NO 2 ) Cu: 0.2201<br />

110–115 Cu(C 10 H 6 NO 2 )·H 2 O Cu: 0.1494<br />

105 Cu(C 12 H 10 NOS) 2 ·H 2 O Cu: 0.1237<br />

F 66–538 130–140 PbClF F: 0.07261<br />

Fe 470–946 900 Fe 2 O 3 Fe: 0.6994<br />

Ga 408–946 900 Ga 2 O 3 Ga: 0.7439<br />

Hg105 Hg(C 12 H 10 NOS) 2 Hg: 0.3169<br />

I 60–900 130–150 AgI I: 0.5405<br />

In 345–1200 1200 In 2 O 3 In: 0.8271<br />

Ir IrO 2 Ir: 0.8573<br />

K 73–653 653 KClO 4 K: 0.2822; K 2 O: 0.3399<br />

270 K 2 PtCl 6 K: 0.1609; K 2 O: 0.1938<br />

KIO 4 K: 0.1700<br />

120 KB(C 6 H 5 ) 4 K: 0.1091<br />

Li 200 Li 2 SO 4 Li: 0.1263; Li 2 O: 0.2718<br />

Mg1050–1100 2 P 2 O 7 Mg: 0.2184; MgO: 0.3622<br />

88–300 155–160 Mg(C 9 H 6 NO) 2 Mg: 0.07775; MgO: 0.1289<br />

Mn 946 1000 Mn 3 O 4 Mn: 0.7203<br />

1000 Mn 2 P 2 O 7 Mn: 0.3871; MnO: 0.4998<br />

Mo 505 PbMoO 4 Mo: 0.2613; MoO 3 : 0.3291<br />

500–525 MoO 3 Mo: 0.6666<br />

<br />

N (as NO )<br />

3 20–242 105 Nitron nitrate N: 0.3732; NO 3 : 0.1652<br />

Na 360–674 125 NaMg(UO 2 ) 3 (C 2 H 3 O 2 ) 9 ·<br />

6.5 H 2 O<br />

Na: 0.01527; Na 2 O:<br />

0.02058<br />

Nb 650–950 900 Nb 2 O 3 Nb: 0.6990<br />

Ni 79–172 110–120 Ni(C 4 H 7 N 2 O 2 ) 2 Ni: 0.2032; NiO: 0.2586<br />

Os 800 (in H 2 ) Os metal<br />

P 477 Mg 2 P 2 O 7 P: 0.2783; PO 4 : 0.8536<br />

160–415 110 (NH 4 ) 3 [P(Mo 3 O 10 ) 4 ] P: 0.0165; P 2 O 5 : 0.0378<br />

Pb 271–959 500–600 PbSO 4 Pb: 0.6832; PbO: 0.7359<br />

600 PbMoO 4 Pb: 0.5643; PbO: 0.6078<br />

120 PbCrO 4 Pb: 0.6411<br />

271–959 600–800 PbSO 4 Pb: 0.6832; PbO: 0.7359<br />

105 Pb(C 12 H 10 NOS) 2 Pb: 0.3240<br />

Pd 45–171 110 Pd(C 4 H 7 N 2 O 2 ) 2 Pd: 0.3162<br />

Rb 70–674 674 Rb 2 PtCl 6 Rb: 0.2954; Rb 2 O: 0.3230<br />

Re 130 (C 6 H 5 ) 4 AsReO 4 Re: 0.2939<br />

110 Nitron perrhenate Re: 0.3306<br />

S 780 BaSO 4 S: 0.1374; SO 3 : 0.3430;<br />

SO 4 : 0.4116<br />

Sb 100 Sb(C 12 H 10 NOS) 3 Sb: 0.1581<br />

SCN 130 AgSCN SCN: 0.3500<br />

110–120 CuSCN SCN: 0.4775<br />

Se 120–130 Se metal SeO 2 : 1.4052<br />

Si 358–946 358 SiO 2 Si: 0.4675

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