| Other: | Molecular weight :94.12Property :Colorless monoclinic crystal or white crystalline powder.Dehydrated, soluble in water, alkaline in aqueous solution, insoluble in ethanol.
 Application :Used as flux for silver welding and for metallurgical processing
 Pack:It is packed in 25kg plastic woven bag or composite kraft paper bag, carton or cardboard bucket.
 
	
		
			| ITEM | GB/T1271-2011 Standard |  
			| Assay % | ≥99.00 |  
			| To clarify the experiment | ≤3 |  
			| Free acid(HF) % | ≤0.05 |  
			| Free alkali(KOH) | ≤0.05 |  
			| Chloride(Cl) % | ≤0.002 |  
			| Iron(Fe) % | ≤0.0005 |  
			| Sulfate(SO42-) % | ≤0.01 |  
			| Silicon dioxide(SiO2) | ≤0.05 |  
			| Heavy Metal(Pb) | ≤0.001 |  |