| Description | 
                                
                                    Colourless crystals or a white, crystalline powder
                                 | 
	
                            
                                Identifications | 
                                
                                    -
                                 | 
	
                            
                            
                                
	
                                | Appearance of solution | 
                                
                                    Solution should be clear and colorless
                                 | 
	
                            
                                Acidity or alkalinity | 
                                
                                    Not more than 0.2 ml of either 0.01M hydrochloric acid or 0.01 M sodium hydroxide is required to change the colour of the solution
                                 |