Section 06 PRODUCTS OF THE CHEMICAL OR ALLIED INDUSTRIES 38 Miscellaneous chemical products 38 24 Prepared binders for foundry moulds or cores; chemical products and preparations 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