| 
	Product: 1,5-Naphthalenedisulfonic acid tetrahydrate 
	CAS NO: 211366-30-2 
	Molecular formula:   C10H8O6S2.4H2O 
	Structure formula:  
	 
	Properties: 
	White pulp or powder. 
	Application:  
	Used as Dye intermediates. 
	Specification: 
	
		
			| 
					Items | 
					Quality |  
			| 
					Purity,% | 
					98 min. |  
			| 
					Acidity,% | 
					8 max. |  
			| 
					Moisture,% | 
					20-25% |  
	  |