1. Is the pencil core poisonous? In fact, the pencil core is not poisonous.
Lead is toxic, and the main raw material for making pencil cores is graphite and clay, so pencil cores are non-toxic. The main components of the pencil core are graphite and clay, graphite is a scaly metallic luster solid, which has a carbon-carbon chemical bond, between the layer and the layer is Van der Waals force, carbon-carbon chemical bond is very stable, want to destroy is very difficult, which is why diamond and graphite are made of carbon, but the physical properties and prices are very different,
There is nothing in the body that can destroy the carbon-carbon chemical bond, so it is certain that the pencil core is safe (unless the clay added inside is harmful to human health).
2. Is there metal poison in the pencil pole? Pencil rod appearance has a wrapping mold or the use of pencil paint technology, on the one hand can protect the pen, on the other hand to increase aesthetics, but the pigment will contain trace metals, a small amount of contact will not have an impact, but bite the pen to eat into the mouth is not appropriate.