Silicon: biological information

Biological role of silicon: silicon is probably essential in higher plants and perhaps to mammals. Diatoms, some protozoa, some sponges, and some plants use silicon dioxide (SiO2) as a structural material. Silicon is known to be required by chicks and rats for growth and skeletal development. Silicon is not particularly toxic but finely divided silicates or silica cause major damage to lungs.

Levels in humans

Table: the abundances of the elements in humans.
Human abundance by weight 260000 ppb by weight
Human abundance by atoms 58000 atoms relative to C = 1000000

How much silicon is in your body? Find out here.

You can use this form to calculate how much silicon your body contains. Enter your weight in either kilograms or pounds and click the "Calculate" button. You must enter a number, not text! Elements for which there are no data will always give a value of zero for the weight, no matter what you put in the weight box.

Calculate how much silicon is in your body
Enter your weight here: You contain about : grams of silicon

Hazards and Risks

Hazards and risks associated with silicon: silicon is not particularly toxic but finely divided silicates or silica cause major damage to lungs. Long term exposure to silicates such asbestos is a severe health problem.

WebElements Shop

WebElements now has a WebElements shop at which you can buy periodic table posters, mugs, T-shirts, games, fridge magnets, molecular models, and more.

Periodic Table fridge magnets Periodic Table fridge magnets
Buy our periodic table fridge magnets here

WebElements poster Periodic table t-shirts Periodic table mouse mats Molymod molecular model kits Chemistry educational resources

silicon atomic number