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Pentane : Properties

The Physical & Chemical properties of Pentane mixture produced at GAIL, Vijaipur are given below.

Physical Characteristics

	Sr.No. Property Range 1 Specific Gravity (at 150C) 0.6300 to 0.6500 2 Reid Vapour Pressure (at 37.8 0C) 0.95 to 1.00 kg/cm2 3 Initial Boiling Point 320C to 35 0C 4 Final Boiling Point 630C to 65 0C 5 Residue on Evaporation less than 1 ppm 6 Copper Strip Corrosion (at 50 0C for 3hrs) 1a (as per IS-1448 P-15) 7 Hydrogen Sulfide (H2S) Nil 8 Colour (Saybolt Color Index) 26 +

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Typical Chemical Composition

	Component Formula Mole% (Range ) Butanes (C4) 0.01 to 0.05 Iso-Pentane (i-C5) 48 to 52 Normal-Pentane (n-C5) 48 to 52 Cyclo-Pentane (c-C5) 0.05 to 0.10 Iso-Hexane (i-C6) 0.01 to 0.05 Normal-Hexane (n-C6) 0.05 to 0.10 Cyclo-Hexane (c-C6) 0.05 to 0.10 Aromatic-Hexane (Ar-C6) 0.01 to 0.05 Heptanes (C7+) 0.01 to 0.05

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Detailed specifications

	S.No PARAMETERS UNIT SPECIFICATION RESULTS 1 Appearance - CLEAR COLORLESS LIQUID CLEAR COLORLESS LIQUID 2 Density @15 0C gm/cc 0.6500 Max. 0.6440 3 Distillation Range a Initial Boiling Point 0C 35 Max. 34 b Final Boiling Point 0C 65 Max. 45 4 RVP @37.8 0C kg./cm2 0.95 Max. 0.85 5 Flash Point 0C <23 <23 6 Moisture ppm 500 60 7 Doctor Test - Negative Negative 8 Hydrogen Sulphide ppm Nil Nil 9 Residue on Evaporation mg/100ml 5 Max 1 10 Copper strip corrosion (for 3 Hrs.at 500C) Not worse than No.1 ASTM 1a 11 Cal. Value KCal./kg - 11530 12 Metal Content - - - a Vanadium ppm - Nil b Potassium ppm - ppm c Calcium ppm - Nil d Lead ppm - Nil e Sodium ppm - Nil

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