Section 06 Products of the chemical or allied 38 Miscellaneous chemical products 38 24 Prepared binders; chemical products, nes; residual products, nes 38 24 40 Prepared additives for cements, mortars or concretes 38 24 40 00 Prepared additives for cements, mortars or concretes Commodity Code Description 38 24 40 00 00 Prepared additives for cements, mortars or concretes