LPG

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LPG (Low Propane Gas) Parameters and Test Methods

PARAMETERS TEST METHODS
Observed Sp. Gravity @60/60(not calculated)
Actual Vapour Pressure at 700F and 1000F
Composition
Mol%, C2,C3, 1C4, nC4, iC5, nC5 & neoC5
Total Sulphur ppm
Ethyl Mercaptan/ H2S
Non Volatile Residue Evaporated Temperature 95% max
Copper Strip Corrosion
Free Water Content
Total Aromatic Hydrocarbons
Total Unsaturated Aliphatic Hydrocarbons
Total unsaturated Hydrocarbons
Residual Matter residue Evaporated Temperature 95% max
1,3 Butadine
Moisture content ppm( for Propane only)
Methyl Mercaptan/ Ethyl Mercaptan COS+ SO-2
Acidity of Residue
Gross Heating Values
Average Molecular Weight
ASTM D 1070
ASTM D 1267
ASTM D 2163

ASTM D 5623

ASTM D 2158
ASTM D 1838
Visual
DHA
DHA
DHA
ASTM D 2158
DHA
Meter
ASTM D 5623
ASTM D 974
Calculation
Calculation