402788 Sigma-Aldrich 
Acetaldehyde
ACS reagent, ≥99.5%
DOWNLOAD MSDS (PDF)
Synonym: Ethanal 

    

    
CAS Number 75-07-0
    
    

    
Linear Formula CH3CHO 
    
    

    
Molecular Weight 44.05 
    
    

    
 Beilstein Registry Number 505984 
    
    

    
 EC Number 200-836-8 
    
    
 PubChem Substance ID 24865119 
    

    
Popular Documents:  Specification Sheet(PDF)Properties
    



    

        

            
Related Categories
            
ACS Grade, Aldehydes, Building Blocks, C1 to C6, Carbonyl Compounds, 
            

            
Chemical Synthesis, Essential Chemicals, Inorganic Salts, Solutions and Reagents, Organic Building Blocks, Research Essentials
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grade  
            
ACS reagent
        
        

            
vapor density  
            
1.52 (vs air)
        
        

            
vapor pressure  
            
14.63 psi ( 20 °C)
        
        

            
assay  
            
≥99.5%
        
        

            
autoignition temp.  
            
365 °F
        
        

            
expl. lim.  
            
60 %
        
        

            
impurities  
            
≤0.008 meq/g Titr. acid
        
        

            
evapn. residue  
            
≤0.005%
        
        

            
refractive index  
            
n20/D 1.332(lit.)
        
        

            
bp  
            
21 °C(lit.)
        
        

            
mp  
            
−125 °C(lit.)
        
        

            
density  
            
0.785 g/mL at 25 °C(lit.)
        
        

            
storage temp.  
            
2-8°C