无水碳酸钾

性状描述: 无色结晶或白色颗粒。有吸湿性。当含有充分水分后(16.36％)不吸湿。易溶于水，几乎不溶于乙醇。水溶液呈强碱性。相对密度2.043。有刺激性。

质量标准: GB/T 1397-1995
项目Item                               优级纯   分析纯  
                                       (GR)     (AR)    
含量(K₂CO₃)Assay,%　　　              ≥99.5     99.0    
澄清度试验Clarity                       合格     合格    
干燥失重loss on drying,%              ≤0.8      1.0      
水不溶物Insoluble matter in water,%   ≤0.005    0.005    
氯化物(Cl)Chloride,%                  ≤0.001    0.003    
硫化合物(以SO₄计)Sulfur compounds,%   ≤0.002    0.003    
总氮量(N)Total nitrogen,%             ≤0.001    0.001    
磷酸盐及硅酸盐(以SiO₂计)
Phosphate and silicate,%              ≤0.004    0.005    
钠(Na)Sodium,%                        ≤0.02     0.05    
钙(Ca)Calcium,%                       ≤0.002    0.02    
镁(Mg)Magnesium,%                     ≤0.0005   0.002    
铝(Al)Aluminum,%                      ≤0.005     --      
铁(Fe)Iron,%                          ≤0.0005   0.0005  
铅(Pb)Lead,%                          ≤0.0005   0.0005  
铜(Cu))Copper,%     　　              ≤0.0005   0.0005      
砷(As)Arsenic,%                       ≤0.00005    --    

ACS级
项目名称　                           ACS Grade
含量(K₂CO₃)Assay                      ≥99.0%
水不溶物Insoluble matter              ≤0.01%
氯化物(Cl)Chloride                    ≤0.003%
磷酸盐(PO₄)Phosphate                  ≤0.001%
二氧化硅(以SiO₂计)Silica              ≤0.005%
硫化合物(以SO₄计)Sulfur compounds     ≤0.004%
重金属(以Pb计)Heavy metals            ≤5ppm
铁(Fe)Iron                            ≤5ppm
钙(Ca)Calcium                         ≤0.005%
镁(Mg)Magnesium                       ≤0.002%
钠(Na)Sodium                          ≤0.02%


99.99% metals basis:


外观Appearance                          White Powder, Granules and/or Chunks
X-射线衍射分析X-Ray Diffraction         Conforms to Structure
纯度Purity                              ≥99.99% Based on Trace Metals Impurities
ICP Assay                               Confirms Potassium component
碳酸盐CO3（Titration by HCL）           43.0- 43.8 %
痕量金属分析total metallic impurities   ≤200ppm by ICP Atomic emission


99.995% metals basis:


外观Appearance                          White Powder and/or Chunks
X-射线衍射分析X-Ray Diffraction         Conforms to Structure
纯度Purity                              ≥99.995% Based on Trace Metals Impurities of ICP
ICP Major Analysis                      Confirms Potassium component
碳酸盐CO3（Titration by HCL）           43.0- 44.4 %
痕量金属分析total metallic impurities   ≤50ppm by ICP Atomic emission
(Li、Na、Ru、Ca、Ba、Al、Cr、Mo、Sn、W、Mn、Fe)

储存条件: 密封干燥保存。

用途: 用作分析试剂。钾盐制备。