Sodium Sulfate Anhydrous

Details:

<p>  </p> <table border="1"> <tbody> <tr> <td> Formula:</td> <td> Na_{<font size="2">2</font>}SO_{<font size="2">4</font>}</td> </tr> <tr> <td> Formula Weight:</td> <td> 142.04. 7757-82-6</td> </tr> <tr> <td> CAS No.</td> <td> 7757-82-6</td> </tr> <tr> <td class="tbl_style" colspan="2"> General Description</td> </tr> <tr> <td> Typical appearance:</td> <td> White Solid</td> </tr> <tr> <td> Analytical use:</td> <td> Kjeldahl nitrogen determination, Drying agent</td> </tr> <tr> <td> Change in state (appoximate):</td> <td> Melting Point, 884°C</td> </tr> <tr> <td> Aqueous solubility:</td> <td> 20 g in 100 mL at 20°C</td> </tr> <tr> <td class="tbl_style" colspan="2"> Specification</td> </tr> <tr> <td> Assay</td> <td> ....... >= 99.0% Na_{<font size="2">2</font>}SO_{<font size="2">4</font>}</td> </tr> <tr> <td> pH of a 5% solution at 25C</td> <td> ....... 5.2-9.2</td> </tr> <tr> <td class="tbl_style" colspan="2"> Maximum Allowable</td> </tr> <tr> <td> Insoluble matter</td> <td> ....... 0.01%</td> </tr> <tr> <td> Loss on ignition</td> <td> ....... 0.5%</td> </tr> <tr> <td> Chloride (Cl)</td> <td> ....... 0.001%</td> </tr> <tr> <td> Nitrogen compound (as N)</td> <td> ....... 5 ppm</td> </tr> <tr> <td> Phosphate (PO_{<font size="2">4</font>})</td> <td> ....... 0.001%</td> </tr> <tr> <td> Heavy metals (Pb)</td> <td> ....... 5 ppm</td> </tr> <tr> <td> Irons (Fe)</td> <td> ....... 0.001%</td> </tr> <tr> <td> Calcium (Ca)</td> <td> ....... 0.01%</td> </tr> <tr> <td> Magnesium (Mg)</td> <td> ....... 0.005%</td> </tr> <tr> <td> Potassium (K)</td> <td> ....... 0.01%</td> </tr> </tbody> </table> <p>  </p>