Inventories

3 Months Ended

Mar. 31, 2017

Inventory Disclosure [Abstract]

Inventories

Inventories

Inventories consist of the following:

	March 31, 2017		December 31, 2016
Finished products	$	491,849	$	500,861
Feedstock, additives and chemicals	202,065		216,877
Materials and supplies	127,794		83,362
Inventories	$	821,708	$	801,100