Tungstosilicic acid hydrate 
        
        Molecular Structure:
 
        MDL:
MFCD00150392 
        Molecular Formula:
	H4[Si(W3O10)4]·xH2O
        Molecular Weight:
	2878.17(无水酸)
        Alias:
Silicotungstic acid 
        Product order:
        
          
            | Name | Specifications | Packing | Price | Delivery | 
          
            | Tungstosilicic acid hydrate | AR | 25g | RMB 44 | Consulting service | 
          
            | Tungstosilicic acid hydrate | AR | 100g | RMB 198 | Consulting service | 
        
         
        Character:
	白色或淡黄色潮解结晶,易溶于水和醇。受热则溶于本身的结晶水,加热至600~650℃时分解。
        Quality Standard:
项目Item                            分析纯   化学纯
                                              (AR)     (CP)
水不溶物Insoluble matter in water,%         ≤ 0.01     0.02
灼烧残渣(以硫酸盐计)Ignition residue,%      ≤ 17.0     17.0    
氯化物(Cl)Chloride,%                        ≤ 0.001    0.003
硫酸盐(SO4)Sulfate,%                        ≤ 0.005    0.01    
硝酸盐(NO3)Nitrate,%                        ≤ 0.01     0.02
钨酸盐(WO4)Tungstate                           合格     合格
二氧化硅(SiO2)Silicon dioxide,%            1.80~2.35 1.80~2.35          
重金属(以Pb计)Heavy metals,%                ≤ 0.002    0.005 
        Storage:
	密封干燥处保存。
		
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