This International Standard specifies required characteristics and additional information to be supplied to the purchaser by the vendor of those products commonly referred to as liquefied petroleum gases (see ISO 8216-3) and is intended to apply to international transfers of commercial propane and commercial butane. This International Standard is neither intended nor expected to replace or encroach upon national standards of any country, since each country is subject to different regulations, codes, industry practices and market utilization. Required characteristics for specific uses should be formulated to meet the specific needs of those uses in accordance with applicable national standards and safety codes.