Rationale

Proposed revision is limited to the modification of Table 1’s maximum Butane and heavier % by volume. This proposed revision would increase the current maximum from 2.5% by volume to 10% by volume in Commercial Propane and Special Duty Propane. TABLE 1 Detailed Requirements for Liquefied Petroleum Gases Product Type Commercial Commercial Commercial Special-Duty ASTM Test Methods Propane Butane PB Mixtures Propane A (see Section 2) Vapor pressure at 37.8 °C (100 °F), kPa (psig) max B 1435 (208) 483 (70) C 1435 (208) D1267D or D2598 or D6897 Heavier hydrocarbon contaminants: E Butane and heavier, F % by volume, max 10 ... ... 10 D2163 Pentane and heavier, G % by volume, max ... 2.0 2.0 ... D2163 Propylene content, % by volume, max ... ... ... 5.0 D2163