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Are Pencils Poisonous
- Jul 28, 2018 -

The pencil is not leaded, this is a misunderstanding, the pencil is mostly graphite and clay, is no poison, and the production of water powder pigment needs a variety of coloring agent, filler, glue, wetting agent, antiseptic and other binder. Coloring agent -- grinding fine pigment powder with ball mill. Fillers -- mainly white pigments or wheat starch. Glue solid agent - dextrin, gum and so on. Wetting agent - ice sugar, glycerin and so on. Preservatives - carbonic acid or formalin.

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