GB/T 12576-1997 in English

本标准规定了用液化石油气的组成计算蒸气压、相对密度和马达法辛烷值的方法。本标准适用于液化石油气。本标准不适用于按SY7509测定残留物大于0.05mL/100mL的产品。马达法辛烷值仅适用于丙烯含量不大于20％的混合物试样。注意：液化石油气易挥发，极易燃烧，操作时应注意有关安全问题。

Scope

This standard specifies the method for calculating vapor pressure, relative density and motor octane number using the composition of liquefied petroleum gas. This standard applies to liquefied petroleum gas. This standard does not apply to products with residues greater than 0.05mL/10mL measured according to SY750. The motor octane number is only applicable to mixture samples with a propylene content not greater than 20%. Note: Liquefied petroleum gas is volatile and highly flammable, so attention should be paid to relevant safety issues during operation.