產品詳情
無水碳酸鈉
【別名】純堿。
【性狀】白色顆?；蚍勰诳諝庵兄饾u吸收水分成為一水合物。相對密度2.532，400℃開始分解，熔點851℃。易溶于水，不溶于乙醇，水溶液呈堿性。
| 檢測項目 | 優(yōu)級純 | 分析純 | 化學純 | 其它規(guī)格 |
| 含量(Na2CO3) /% | ≥99.8 | ≥99.8 | ≥99.8 | 定做 |
| 澄清度試驗 /# | ≤2 | ≤3 | ≤4 | |
| 水不溶物 /% | ≤0.005 | ≤0.01 | ≤0.02 | |
| 灼燒失量(300℃) /% | ≤0.5 | ≤1.0 | ≤1.0 | |
| 氯化物(Cl) /% | ≤0.001 | ≤0.002 | ≤0.005 | |
| 硫化合物(SO4) /% | ≤0.003 | ≤0.005 | ≤0.01 | |
| 總氮量(N) /% | ≤0.001 | ≤0.001 | ≤0.002 | |
| 磷酸鹽及硅酸鹽(以SiO3計) /% | ≤0.002 5 | ≤0.006 | ≤0.013 | |
| 鎂(Mg) /% | ≤0.000 5 | ≤0.002 | ≤0.005 | |
| 鉀(K) /% | ≤0.005 | ≤0.005 | ≤0.02 | |
| 鋁(Al) /% | ≤0.001 | ≤0.003 | ≤0.01 | |
| 鈣(Ca) /% | ≤0.005 | ≤0.01 | ≤0.02 | |
| 鐵(Fe) /% | ≤0.000 3 | ≤0.000 5 | ≤0.001 | |
| 重金屬(以Pb計) /% | ≤0.000 5 | ≤0.000 5 | ≤0.001 |
