Thursday, May 13, 2010

Make Pure Sand


Very few places on Earth will one find pure, white Sand. It is easily made in the home laboratory with two common chemicals...

There are very few places on Earth you can find pure Sand. In most instances, impurities in the Sand give it an off-white or beige color. Pure, white Sand can easily be made in the home laboratory.

Chemicals Required:
- Sodium Silicate
- Sodium Bisulfate

Procedure:

1. Measure 5 mL of Sodium Silicate solution and pour it into a test tube. To this, add 5 mL of water. Shake until the solution is completely dissolved.
2. In a second test tube, dissolve 3.5 grams of Sodium Bisulfate in 10 mL of water. Stir vigorously with a glass rod until it is completely dissolved.
3. Pour the contents of the first test tube into the second. Mix thoroughly. A thick, jelly-like precipitate will be form in a few minutes. This substance is known as Orthosilicic Acid.
4. Spoon some of the Orthosilicic Acid into a porcelain crucible. Heat the Orthosilicic Acid over a butane or Bunsen burner or 5 minutes.
5. When the mixture is thoroughly dried, it will be reduced to a white solid. This substance is known as Silicon Dioxide, or pure Sand.

- United Nuclear

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