1,2-ETHANEDITHIOL

PRODUCT IDENTIFICATION
CAS NO. 540-63-6

1,2-ETHANEDITHIOL
EINECS  NO. 208-752-3
FORMULA C2H4(SH)2
MOL WT. 94.20
H.S. CODE

 
TOXICITY

SYNONYMS 1,2-Dimercaptoethane; 1,2-Dithiol ethane; Dithioethyleneglycol;
Dithioglycol; Ethyl hydropersulfide; Ethylene dimercaptan; Ethylene dithioglycol; Ethylenedimercaptan; Ethylenedithiol; S-Ethylene dimercaptan; s-Ethylene dimercaptan;
SMILES 

                    		
                

                

                    
                        
CLASSIFICATION

                    		
                    
                        

                    		
                

                

                    
                        
PHYSICAL 
                        AND CHEMICAL PROPERTIES

                    		
                

                

                    PHYSICAL 
                        STATE
                    
                        
clear 
                        liquid

                    		
                

                

                    MELTING 
                        POINT 
                    
                        
-41 
                        C

                    		
                

                

                    BOILING 
                        POINT
                    
146 C                    
                

                

                    SPECIFIC 
                        GRAVITY 
                    
                        
1.123


                

                

                    SOLUBILITY 
                        IN WATER
                    slightly 
                        soluble (soluble in most organic solvents)
                

                

                    pH
                    
                

                

                    VAPOR 
                        DENSITY
                    
                

                

                    AUTOIGNITION 
                        
                    
                        

                    		
                

                

                    NFPA 
                        RATINGS
                    
                

                

                    
                        
REFRACTIVE 
                        INDEX

                    		
                    
                        

                    		
                

                

                    FLASH 
                        POINT
                    94 
                        C
                

                

                    STABILITY
                    Stable 
                        under ordinary conditions. 
                

                

                    
                        
GENERAL 
                        DESCRIPTION & APPLICATIONS

                    		
                

                

                    
Acetals are 
geminal-diether derivatives of aldehyde by combination of an aldehyde molecule 
with two alcohol molecules and elimination of water. Thioacetal is the sulfur 
analogs 
of acetal. Thiols give thioacetals with Lewis acid catalyst. Ethanedithiol 
                        reacts with aldehydes to give dithiolanes. 
                        Oxidation alcohols to aldehydes  changes the oxidation 
state of carbon but not oxygen. Oxidation of sulfur compounds 
changes the oxidation state of sulfur rather than carbon, which inverts the polarity at the 
functionalised carbon atom. This polarity inversion  allows next step reactions of this functional group 
                        and new transformations. Ethanedithiol is the starting 
                        material of dithiane chemistry. 
                

                

                    SALES 
                        SPECIFICATION
                

                

                    
                        
APPEARANCE

                    		
                    
                        
clear 
                        to yellowish liquid

                    		
                

                

                    ASSAY
                    
                        
99.0% 
                        min

                    		
                

                

                    WATER
                    
                        
0.5% 
                        max

                    		
                

                

                    TRANSPORTATION
                

                

                    PACKING
                    25kgs 
                        in drum
                

                

                    HAZARD 
                        CLASS
                    6.1 
                        (Packing Group: II)
                

                

                    UN 
                        NO.
                    3071
                

                

                    OTHER 
                        INFORMATION
                

                

                    Hazard Symbols: T, Risk Phrases: 10-21/22-23-36, Safety Phrases: 
                        26-36/37-45