The invention relates to an erasable, unburnt colored lead for writing, drawing and painting devices or erasable, unburnt colored chalk containing at least one filler material, graphite, at least one colorant, at least one binding agent and at least one wax, wherein boron nitride is present as a filler material and at least on pigment is present as colorant. The invention further relates to a writing, painting or drawing device comprising an erasable, unburnt colored lead and a method for manufacturing such a colored lead or colored chalk.

A pencil lead may have sufficient strength at the time of writing even when a tip is pointed, less deterioration due to moisture absorption, and erasability, and may be manufactured without applying a temperature exceeding 500 C. Such a pencil lead may contain at least a clay in which the peak of 2 appears at 12.40.5 and/or 24.51.0 as measured by XRD, a coloring material, and an alkali metal element. Manufacturing the pencil lead may include drying a clay at 50 C. to 500 C. such that a peak of 2 appears at 12.40.5 and/or 24.51.0 as measured by XRD, mixing the dried clay, a coloring material, and an alkali metal hydroxide aqueous solution, molding the mixture, and then performing firing at 50 C. to 500 C.

A pencil lead may have sufficient strength at the time of writing even when a tip is pointed, less deterioration due to moisture absorption, and erasability, and may be manufactured without applying a temperature exceeding 500 C. Such a pencil lead may contain at least a clay in which the peak of 2 appears at 12.40.5 and/or 24.51.0 as measured by XRD, a coloring material, and an alkali metal element. Manufacturing the pencil lead may include drying a clay at 50 C. to 500 C. such that a peak of 2 appears at 12.40.5 and/or 24.51.0 as measured by XRD, mixing the dried clay, a coloring material, and an alkali metal hydroxide aqueous solution, molding the mixture, and then performing firing at 50 C. to 500 C.