Characters and features: Black powders, escellent tinting strength and covering capacity, also good at resistance to light and atmosphere, alkali resistant, without water and oil perjmeability, no acid resistance, dissolved in hot string acid.

• 性状特点:黑色粉末,着色力和遮盖力都很好,耐光和耐大气性亦好,耐光性良好,耐碱无水渗和油渗性,不耐酸,溶于热的强酸中。