p>1.1 This specification covers benzene for use with zeolite based catalysts.1.2 The following applies to all specified limits in this specification: for purposes of determining conformance with this specification, an observed value or a calculat This specification covers benzene for use with zeolite based catalysts. Tests shall be performed to determine the property requirements of benzene in accordance to the following test methods: benzene weight percentage; sulfur mass; thiophene mass; tolu