Announcing the definitive final results for the offer on Wednesday, China National Chemical Corporation said around 94.7 percent of shares had been tendered.

ChemChina re-affirmed its intention to request the cancellation of the remaining Syngenta shares if the 98 percent threshold is exceeded.

"To that end, it intends to acquire further shares through market purchases or in off-market transactions," it said in a statement.

If it gets less than 98 percent, it plans to proceed to a squeeze-out merger.

(Reporting by Michael Shields; Editing by Stephen Coates)