Naphtha
Naphtha is a general term that has been used for over two thousand years to refer to flammable liquid hydrocarbon mixtures. Mixtures labeled naphtha have been produced from natural gas condensates, petroleum distillates, and the distillation of coal tar and peat. It is used diversely in different industries and regions to refer to gross products like crude or refined products such as kerosene.
Analysis | Unit | limit | Test Method |
Density @ 15.0 ·c | Kg/m3 | 0.700-0.765 | ASTM D1298 |
Distillation | ·c |
| ASTM D86 |
I.B.P | ·c | 75-90 | ASTM D86 |
F.B.P | ·c | 170-200 | ASTM D86 |
Residue | %Vol | 0.5-1.5 | ASTM D86 |
Loss | %Vol | 0.5-1.5 | ASTM D86 |
Total Sulphur | %Wt | 0.05-0.15 | ASTM D1266 |
Vapour Pressure | K.Pa | 13-24 | ASTM D323 |
H2S | PPM | Trace | IP-103 |
Colour, Saybolt | – | 25 min | ASTM D1500 |
Bromine Number | Mg/100ml | 1 max | ASTM D1159 |
Paraffin Content | %Vol | 50-70 | GC |
Olefins Content | %Vol | 0.5-1 | GC |
Naphthene Content | %Vol | 15-30 | GC |
Aromatics Content | %Vol | 10-18 | GC |
Lead (PB) | P.P.B | 20 max | UOP-350 |
Cupper | PPM | 0.03-0.07 | A.A |
Silicon | PPM | Trace | A.A |
Nitrogen | PPM | 1 max | UOP-313 |
Water Content | PPM | 300 max | ASTM E1064 |
Chloride | PPM | 5-10 | UOP-799 |
As | P.P.B | 10 max | A.A |
C/H Ratio | %Vol | 5.5-6.5 | Calculate |
Gum Existent | Mg/100ml | 1 | ASTM D381 |