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Precautions for the use of pencils

Release time:

2023-09-28 16:54

1. Is pencil lead poisonous?

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

The main components of the pencil refill are graphite and clay. Graphite is a flaky solid with metallic luster. Among them, there are carbon-carbon chemical bonds. Van der Waals force is between layers. The carbon-carbon chemical bonds are very stable. It is very difficult to destroy. This is why diamond and graphite are composed of carbon, but their physical properties and prices are very different, nothing in the human body can break the carbon-carbon chemical bond, so it is certain that pencil lead is safe (unless the clay inside is harmful to human health).

2. Does the pencil rod have metal poison?

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

Key words:

Pencil

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