NEW YORK — International Paper has put its pine-chemical business Arizona Chemical on the sale block, in keeping with its plan to divest more than $3 billion in non-core assets following a merger with Champion International.

Arizona Chemical operates eight manufacturing plants in the United States and seven in Europe, and employs 2,000 people. The company, based in Jacksonville, FL, is a supplier of tall oil and derivatives, castor-oil derivatives, fatty and specialty esters, rosin-based resins, rosin esters, and polyamide resins used in coatings, adhesives, and other products.