Langment Cement is our own product that we’re offering to the public. This is a Federal White Portland Cement and it’s great for masonry. The color of white cement is determined by its raw materials and the manufacturing process. Metal oxides, primarily iron and manganese, influence the whiteness and undertone of the material. Federal White Cement is a Portland cement manufactured with select raw materials to insure negligible amounts of iron and manganese oxides which are the chief contributors of grey cement color.