指定三种主要由硫化镉或硫化镉和硒化镉混合晶体组成的颜料；镉可以被锌部分取代。类型1，浓缩颜料，包含不超过30%（m/m）的填充剂:类型2，扩展颜料，包含不超过70%（m/m）的填充剂:类型3，基本上是纯的，不包含任何填充剂，主要适用于陶瓷。

Specifies three types of pigment consisting predominantly of cadmium sulfide or of mixed crystals of cadmium sulfide and cadmium selenide; the cadmium may be partially replaced by zinc. Type 1, concentrated pigments, contain not more than 30 % (m/m) of extenders: type 2, extended pigments, contain not more than 70 % (m/m) of extenders: type 3, these are essentially pure and do not contain any extenders and are mainly suitable for use in ceramics.