EVONIK CORPORATION › ACEMATT® OK 607 ACEMATT® OK 607 $0.00 ACEMATT® OK 607 is a fine particle sized wax treated precipitated silica. It is suitable for pigmented and non-pigmented systems. Add To Cart Added! ACEMATT® OK 607 is a fine particle sized wax treated precipitated silica. It is suitable for pigmented and non-pigmented systems. You Might Also Like ACEMATT® OK 390 ACEMATT® OK 607 LC ACEMATT® HK 520 ACEMATT® OK 520 ACEMATT® OK 412