无水碳酸钠sodiumcarbonateanhydrous
项目(item) |
分析纯(a.r.) |
化学纯(c.p.) |
含量(assay)(na2c03)/% |
≥99.8 |
≥99.8 |
澄清度试验(claritytest) |
合格(qualified) |
合格(qualified) |
水不溶物/(waterinsolubles)/% |
≤0.01 |
≤0.02 |
干燥失重(dryingloss)(300οc)/% |
≤1.0 |
≤1.0 |
氯化物(chlorides)(cl)/% |
≤0.002 |
≤0.005 |
硫化合物(sulphoniumcompounds)(ass04)/% |
≤0.005 |
≤0.01 |
氮化合物(nitrogencompounds)(asn)/% |
≤0.001 |
≤0.002 |
磷酸盐及硅酸盐(phosphatesandsilicate)(assi03)/% |
≤0.006 |
≤0.013 |
镁(magnesium)(mg)/% |
≤0.002 |
≤0.005 |
铝(aluminum)(ai)/% |
≤0.003 |
≤0.01 |
钾(kalium)(k)/% |
≤0.005 |
≤0.02 |
钙(calcium)(ca)/% |
≤0.01 |
≤0.02 |
铁(iron)(fe)/% |
≤0.0005 |
≤0.001 |
重金属(heavymetal)(aspb)/% |
≤0.0005 |
≤0.001 |