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This chemical largely consists of potassium sulfate and is not expected to be a health hazard. It is used as a laundry booster (Figure 3). It is stored in the Thin Section Lab with the Acetic acid (Figure 2).
Figure 3. Borax
Nitric Acid, Concentrated, or 10%–15% for the Water Bath
Concentrated nitric acid (50%–70% HNO3~ v/v) is highly dangerous. It can cause severe tissue damage on contact, is highly toxic, and the fumes present similar risks of poisoning and chemical burns. When mixed with water, nitric acid liberates large quantities of heat, so appropriate care should be used when diluting this compound. This compound is also a strong oxidizing agent, so nitric acid waste should not be mixed with any organic materials. Note that the nitric acid used in the water bath in the Chemistry Lab is still dangerous and should be treated with the appropriate care. Wear proper PPE.
Disposal of acid solution
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