提供一级137片内射高清视频,www.一区,久久内射,一区二区三区欧美

<rp id="pc8i0"></rp>

<var id="pc8i0"></var>
 

    2. 

    4. 


      
	
      
   
   		
        
       




      
	

      

      

      
	
    
      
    	
      
        	
      PRODUCTS
      
        
      
        
      
        	            	
      Propionic acid
      
                
      
	
		
      
			Product name:
			Propionic acid
		
      
		
      
			English name:
			Propionic acid
		
      
		
      
			CAS RN:
			79-09-4
		
      
		
      
			Molecular formula:
			C3H6O2
		
      
		
      
			Molecular weight:
			74.08
		
      
		
      
			Properties:
			Colorless to yellowish liquid with slightly irritating odor.
		
      
		
      
			Quality index:
			
			
      
				
					
      
						Index name
						Index
					
      
					
      
						Content %
						≥99.5
					
      
					
      
						Relative density(20/20℃)
						0.993-0.997
					
      
					
      
						Boiling range(138.5-142.5℃)%
						≥95.0
					
      
					
      
						Moisture%
						≤0.15
					
      
					
      
						Heavy metal%
						≤0.001
					
      
					
      
						Arsenic %
						≤0.0003
					
      
				      
			
      
			      		
		
      
		
      
			Use:
			Used in the preparation of propionic ester
		
      
		
      
			Structural formula:
			
		
      
	      

      

      
        	
        	
            
      Back