| Product description: 
     Colorless monoclinic structure; relative density: 1.886; melting point: 172.3℃; easily soluble in water; soluble in ethyl alcohol and acetoneUses: as stripping agent in electroplating industry; as refrigerating fluid; also used in dyeing, photography, pesticide and steel analysis industry
 
	
		
			| content %,(dry basis)≧ | 99 | 98 |  
			| ferrum %,≦ | 0.0001 | 0.0002 |  
			| water insoluble%,≦ | 0.005 | 0.005 |  
			| moisture%,≦ | 1.5 | 1.5 |  
			| chloride%,≦ | 0.02 | 0.02 |  
			| sulfate%,≦ | 0.03 | 0.04 |  
			| heavy metal%,≦ | 0.0008 | 0.001 |  
			| PH | 5.3—8.5 | 5.3—8.5 |  |