REFPONOMSep2021

S.N0.	Characteristics	Method No.		Requirement for Commercial
				Butane	Butane-Propane mixture	Propane
1	Density at 15°C,Kg/m³		[P:76]/ISO3993 D 1657	Report	Report	Report
2	Vapour pressure at 40°C, kPa, gauge, Max.		[P:71]/ASTM D 1267/D6897	520	1050	1550
3	Composition, Liquid volume percent a) C2 Hydrocarbons b) C3 Hydrocarbons c) C4 Hydrocarbons d) C5 Hydrocarbons and heavier OR		ASTM D 2163/ [P:151]	— Report Report 2.5 Max	Report Report Report 2.5 Max	Report 95.0 Min 4.0 Max 0.2 Max
3	Volatility: Evaporation temperature in °C for 95 percent by volume at 760 mm Hg pressure, Max.		ASTM D 1837-2011/[P:72]	2.2	2.2	-38.0
4	Total Volatile Sulphur ppm, Max.		ASTM D 3246/D6667	140	140	150
5	Copper strip corrosion at 38°C for 1 h		ASTM D 1838 / [P:152]/ISO6251	Not worse than No. 1
6	Hydrogen Sulphide		ASTM D 2420/[P:73]	Pass the test
7	Moisture Content		–	—	—	Pass
8	Free Water Content.		–	None	None	—
9	Caustic test			Pass	Pass	Pass

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