Are pencil ingredients dangerous?

1. The outer surface of the pencil holder has a wrapping mold or pencil paint technology. On the one hand, it can protect the pen holder and on the other hand, it increases the appearance. However, the paint will contain traces of heavy metals, and a small amount of contact will not affect it, but bite the pen holder and eat it in your mouth. Still inappropriate.

Are pencil leads toxic? In fact, pencil lead is not poisonous. Lead is poisonous, and the main raw materials for making pencil leads are graphite and clay, so of course there is no poison.

The main components of the pencil lead are graphite and clay. Graphite is a scaly solid with metallic luster, in which there are carbon-carbon chemical bonds, and there are van der Waals forces between the layers. The carbon-carbon chemical bonds are very stable. It's very difficult, that's why both diamond and graphite are made of carbon, but the physical properties and price are very different, there is nothing in the human body that can break the carbon-carbon chemical bond, so it is safe to say that pencil leads are safe (unless It is the clay added inside that is harmful to human health).