Chemical additives for gasoline; chemical additives for drilling muds; alkaline-earth metals; bentonite; caustics for industrial purposes; chemical reagents, other than for medical or veterinary purposes; agricultural chemicals, except fungicides, herbicides, insecticides and parasiticides; chemicals for use in forestry, except fungicides, herbicides, insecticides and parasiticides; horticultural chemicals, except fungicides, herbicides, insecticides and parasiticides; chemicals for use in th...