最近工作涉及购买化学试剂，试剂为标准ISO3733-1999,石油产品和沥青材料水含量的测定（蒸馏法）中所用到的溶剂，有两个petroleum distillate实在不知道是什么，具体描述为： A) petroleum distillate,yielding not more than 5%(V/V) distillates at 125 ℃ and not less than 20%(V/V) at 160℃ when tested in accordance with ISO3405 and with a density not lower than 855kg/m3 at 15℃
B) A petroleum solvent,free of water, of which 5%(V/V)boils between 90℃ and 100℃, and 90%(V/V)distills below 210℃
C) light petroleum with a boiling range of 100℃ to 120℃
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