Publikuar
ISO 5518:2007 specifies a method for determining the benzoic acid content of fruits, vegetables and derived products.
As chlorobenzoic acids are resistant to oxidation, the method cannot be applied in the presence of p-chlorobenzoic acid, as the absorption spectrum of this acid is close to that of benzoic acid. Neither can it be used in the presence of cinnamic acid, which is transformed into benzoic acid by chromic acid oxidation.
                WITHDRAWN
                                    SSH 1612-5:1990
                            
                    PUBLISHED
                    SSH ISO 5518:2007
                    60.60
                                        Standard published
                    1 jan 2009
                
                WITHDRAWN
                                    SSH ISO 5518:2001