| Other: | Molecular weight :118.07Property :A colorless to white vitreous piece or piece, or a white fibrous crystal or powder.Odourless.Slowly dissolved in water, its solubility varies with the degree of polymerization, generally 0.004%.The aqueous solution is alkaline.Soluble in sodium salt solution, rapidly dissolved in dilute inorganic acids, insoluble in ethanol.
 Application :Mainly used as fertilizer, but also as a chemical reagent.
 Pack:It is packed in 25kg plastic woven bag or composite kraft paper bag, carton or cardboard bucket.
 
	
		
			| ITEM | YingKe Standard |  
			| Co ppm | <1 |  
			| Cr ppm | <1 |  
			| Cu ppm | <1 |  
			| Fe ppm | <5 |  
			| Mn ppm | <1 |  
			| Ni ppm | <1 |  
			| Ti ppm | <1 |  
			| V ppm | <1 |  
			| P2O5 % | 71±1 |  
			| Calcination of weightlessness % | <0.6 |  |