中国免费看的片,亚洲处破女av日韩精品波波网,无码人妻斩一区二区三区,国产精品久久久久久人妻无

<acronym id="8a9l0"><blockquote id="8a9l0"></blockquote></acronym>
    
    


    

    
	

    
    
    
        
        
    SZSE：002741
    
    
    
    

    


    
    
    
        
    
    

    

    
    
    
        
    
    

    

    
    
    
        
    
    

    


    
    
    
        
    
    

    


    
    
    
        
    
    

    






    
    
    
        
    
    
    
    
        
    
    
    
    
    
    
    
        
    

            
            
    
                
    Chemical Reagents
    
                
            
    
            
    
                

                
    Sodium carbonate anhydrous?COA Report
    

                


                
    
                
    
                    
      
                        
    • CAS No.：497-19-8
      • 
                        
    • Molecular weight：105.99
      • 
                        
                        
                        
                        
                        
    • Molecular formula：Na2CO3
      • 
                        
                        
    • EC No.：207-838-8
      • 
                        
    • HS-No：28362000
      • 
                    
    
                
    
                
    
                    
    Information
    
                    
                    Specification category：
                  
                    
    
                        
    
                            
                                
    
                                     Product No. Product name specifications
                                
    
                                        
     
1.01500.010 Sodium carbonate anhydrous? PT100g
     
     
1.01500.030 Sodium carbonate anhydrous? AR500g
     
     
1.01500.040 Sodium carbonate anhydrous? AR25kg/drum
     
     
1.01500.050 Sodium carbonate anhydrous? CP500g
     
     
1.01500.060 Sodium carbonate anhydrous? CP25kg/drum
     
     
1.01500.070 Sodium carbonate anhydrous? Spec500g
     
     
1.01500.080 Sodium carbonate anhydrous? Spec25kg/Sackv
1.01500.130 Sodium carbonate anhydrous? CP25kg/Woven sack
     
     
1.01500.160 Sodium carbonate anhydrous? Spec25kg/ Paper Sack(99.9%)
     
     
1.01500.230 Sodium carbonate anhydrous? AR25kg/Sack
    
                              
                                
                        
    
                    
    
                    
                    Characteristic：
                    Appearance and properties: wwhite grain or powder(no water sterling),puckery. 
    
Relative density?(water=1): 2.53 
    
Melting point(℃): 851 
    
Boiling point(℃): 1600 
    
Concentration: sterling 
    
Solubility: Soluble in water,Dissolved?in ethanol、diethyl ether. 
    
                    Technical  indicators：
                 
                    
    
                        
    
                            
                                
    
                                     Item AR CP
                                
    
                                        
     
Assay(Na2CO3) ≥99.8% ≥99.8%
     
     
Clarity of solution,number Pass3 Pass4
     
     
Insoluble matter in water ≤0.01% ≤0.02%
     
     
Loss on drying(300℃) ≤1.0% ≤1.0%
     
     
Chloride(Cl) ≤0.002% ≤0.005%
     
     
Sulfide(as SO4) ≤0.005% ≤0.01%
     
     
Total nitrogen(N) ≤0.001% ≤0.002%
     
     
Phosphate and silicate(as SiO3) ≤0.006% ≤0.013%
     
     
Magnesium(Mg) ≤0.002% ≤0.005%
     
     
Aluminum(Al) ≤0.003% ≤0.01%
     
     
Potassium(K) ≤0.005% ≤0.02%
     
     
Calcium(Ca) ≤0.01% ≤0.02%
     
     
Iron(Fe) ≤0.0005% ≤0.001%
     
     
Heavy metals(as Pb) ≤0.0005% ≤0.001%
    
                              
                                
                        
    
                    
    
                    
                
    
                
                
    
                    
    
                        
                        Related Products
                        
                    
    
                    
    
                
    
                
    
                    
    
                        
    
                                                                                                                                                                                                                                                                                                                                                                       
     
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
                        
    
                    
    
                    
    
                    
    
                
    

                

                
            
    
            
            
    
        
    
    
    
    
    



    

    
    

    

    


    
    
    
        
    
    
    
    Copyright ? Guangdong?Guanghua?Sci-Tech?Co.,?Ltd. GuangDong ICP No. 14033791-1