1. Is pencil lead poisonous?

In fact, pencil lead is not toxic, and the main raw materials for making pencil lead are graphite and clay, so pencil lead is non-toxic.

The pencil lead is mainly composed of graphite and clay. Graphite is a scaly metallic solid, in which there is a carbon carbon chemical bond. Between layers is Van der Waals force. The carbon carbon chemical bond is very stable, and it is difficult to break it. That is why diamonds and graphite are made of carbon, but their physical properties and prices vary greatly. There is nothing in the human body that can break the carbon carbon chemical bond, So it is certain that pencil lead is safe (unless the clay added in it is harmful to human health).

2. Is the pencil rod metal poisonous?

The surface of the pencil holder has a wrapping mold or pencil paint technology. On the one hand, it can protect the pencil holder, and on the other hand, it can increase its beauty. However, the paint will contain trace heavy metals, and a small amount of contact will not affect it. However, it is still inappropriate to bite the pencil holder into your mouth.