Hydrocarbons, C5 – C12Naphtha and reformate analysis to ASTM D 5134

Application Note

Energy & Fuels

IntroductionGas chromatography with an Agilent CP-Sil PONA CB column separates 111 components during naphtha and reformate according to ASTM D5134 in 75 minutes.

AuthorsAgilent Technologies, Inc.

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ConditionsTechnique : GC-capillary

Column : Agilent CP-Sil PONA CB, 0.21 mm x 50 m CP-Sil PONA CB according to ASTM D 5134(df = 0.5 μm) (Part no. CP7531)

Temperature : 35 °C (30 min) → 200 °C, 2 °C/min; 200 °C (10 min)

Carrier Gas : He, 215 kPa (2.15 bar, 30.5 psi)

Injector : Split, 200 mL/min; T = 200 °C

Detector : FIDT = 250 °C

Sample Size : 0.1 μL

Solvent Sample : hexane

Peak identification

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1. methane2. ethane3. propane4. isobutane5. n-butane6. 2,2-dimethylpropane7. isopentane8. n-pentane9. 2,2-dimethylbutane10. cyclopentane11. 2,3-dimethylbutane12. cyclopentane13. 3-methylpentane14. n-hexane15. 2,2-dimethylpentane16. methylcyclopentane17. 2,4-dimethylpentane18. 2,2,3-trimethylbutane19. benzene20. 3,3-dimethylpentane21. cyclohexane22. 2-methylhexane23. 2,3-dimethylpentane24. 1,1-dimethylcyclopentane25. 3-methylhexane26. cis-1,3-dimethylcyclopentane27. trans-1,3-dimethylcyclopentane28. 3-ethylpentane29. trans-1,2-dimethylcyclopentane30. 2,2,4-trimethylpentane31. n-heptane32. methylcyclohexane + cis-1,2-dimethylcyclopentane

33. 1,1,3-trimethylcyclopentane + 2,2-dimethylhexane34. ethylcyclopentane35. 2,5-dimethylhexane + 2,2,3-trimethylpentane36. 2,4-dimethylhexane37. 1,trans-2,cis-4-trimethylcyclopentane38. 3,3-dimethylhexane39. 1,trans-2,cis-3-trimethylcyclopentane40. 2,3,4-trimethylpentane41. toluene + 2,3,3-trimethylpentane42. 1,1,2-trimethylcyclopentane43. 2,3-dimethylhexane44. 2-methyl-3-ethylpentane45. 2-methylpentane46. 4-methylheptane + 3-methyl-3-ethylpentane47. 3,4-dimethylhexane48. 1,cis-2,trans-3-trimethylcyclopentane49. cis-1,3-dimethylcyclohexane50. 3-methylheptane + 1,cis-2,trans-3-trimethylcyclopentane51. 3-ethylhexane + trans-1,4-dimethylcyclohexane52. 1,1-dimethylcyclohexane53. 2,2,5-trimethylhexane + trans-1,3-ethylmethylcyclopentane54. cis-1,3-ethylmethylcyclopentane55. trans-1,2-ethylmethylcyclopentane56. 2,2,4-trimethylhexane + 1,1-ethylmethylcyclopentane57. trans-1,2-dimethylcyclohexane

58. 1,cis-2,cis-3-trimethylcyclopentane59. trans-1,3-dimethylcyclohexane + cis-1,4-dimethylcyclohexane60. n-octane61. isopropylcyclopentane + 2,4,4-trimethylhexane62. unidentified C9-naphthene63. unidentified C8-naphthene64. unidentified C9-naphthene65. cis-1,2-ethylmethylcyclopentane + 2,3,5-trimethylhexane66. 2,2-dimethylheptane67. cis-1,2-dimethylcyclohexane68. 2,2,3-trimethylhexane + 9N69. 2,4-dimethylheptane70. 4,4-dimethylheptane + 9N71. ethylcyclohexane + n-propylcyclopentane72. 2-methyl-4-ethylhexane73. 2,6-dimethylheptane + 9N74. 1,1,3-trimethylcyclohexane75. unidentified C9-naphthene76. 2,5-dimethylheptane + 9N77. 3,5-dimethylheptane + 3,3-dimethylheptane + N78. unidentified C9-naphthene79. unidentified C9-naphthene80. ethyl benzene81. unidentified C9-naphthene82. unidentified naphthene + 2,3,4-trimethylhexane83. unidentified napthenes

84. unidentified naphthene + paraffin85. m-xylene86. p-xylene87. 2,3-dimethylheptane88. 3,4-dimethylheptanec + N89. 3,4-dimethylheptanec

90. unidentified napthene91. 4-ethylheptane + N92. 4-methyloctane93. 2-methyloctane94. unidentified napthene95. unidentified napthene96. 3-ethylheptane + N97. 3-methyloctane98. unidentified napthene99. o-xylene + 1,1,2-trimethylcyclohexane100. unidentified napthene + 2,4,6-trimethylheptane101. unidentified naphthene102. unidentified paraffin103. unidentified napthenes104. unidentified napthene105. unidentified napthene + paraffin106. unidentified napthene107. unidentified napthene108. unidentified napthene109. unidentified napthene110. n-nonane111. unidentified napthenec - stereoisomersNote: The abbreviations N and P refer to unidentified naphthenes and paraffins respectively.

ConditionsTechnique : GC-capillary

Column : Agilent CP-Sil PONA CB, 0.21 mm x 50 m CP-Sil PONA CB according to ASTM D 5134(df = 0.5 μm) (Part no. CP7531)

Temperature : 35 °C (30 min) → 200 °C, 2 °C/min; 200 °C (10 min)

Carrier Gas : He, 215 kPa (2.15 bar, 30.5 psi)

Injector : Split, 200 mL/min; T = 200 °C

Detector : FIDT = 250 °C

Sample Size : 0.1 μL

Solvent Sample : hexane

Peak identification

www.agilent.com/chemThis information is subject to change without notice.© Agilent Technologies, Inc. 2011Printed in the USA31 October, 2011First published prior to 11 May, 2010A00752