Information
                    
                    Specification category:
                  
                    
                        
                            
                                
                                     | Product No. |  Product name |  specifications | 
                                
                                         | 
1.19280.010 |  Methyl 4-hydroxybenzoate |  CP100g | 
  | 
 | 
                              
                            
                        
                     
                    
                    Characteristic:
                    Appearance and properties:Colorless crystals or white crystalline powder, odorless or slight pungent odor.
Melting point(℃): 125-128
Boiling point(℃): 270-280(Decomposition)
Concentration: pure
Solubility: disoluble in water,Slightly soluble in Benzene, carbon tetrachloride, soluble in alcohol, ether, acetone.
                    
Technical  indicators:
                 
                    
                        
                            
                                
                                     | Item |  AR |  CP | 
                                
                                         | 
Assay(C8H8O3) |  ≥99.0% |  ≥98.5% | 
  | 
Melting point(℃) |  126~128 |  125~128 | 
  | 
Solubility in dthanol |  Pass |  ---- | 
  | 
pH value(50g/L,25℃) |  4.0~7.0 |  4.0~7.0 | 
  | 
Residue on ignition (as SO4) |  ≤0.05% |  ≤0.1% | 
  | 
Chloride(Cl) |  ≤0.001% |  ≤0.001% | 
  | 
Sulfate(SO4) |  ≤0.005% |  ≤0.01% | 
  | 
Iron(Fe) |  ≤0.005% |  -- |