How Nelson-farrar Indexes Of Chemical Costs Have Changed

Gary Farrar Contributing Editor Nelson-Farrar indexes of chemical costs [52729 bytes] Itemized refined cost indexes [59680 bytes] Itemized refining cost indexes [100067 bytes] The costs of two important chemicals used in crude-oil refining changed very little during the period, 1994-1996, while the costs of three others cycled significantly. The two stable chemicals were hydrofluoric acid, with Nelson-Farrar index ending with 411.2, and sulfuric acid with an index constant of 347.4. Platinum varied from 395.0 in the first quarter of 1994, to 437.4 in the second quarter of 1995, and back to 381.5 in the last quarter of 1996. However, ...

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