Inorganic Acids

One of the most commonly used product groupings in synthesis are inorganic acids. These products are used in a wide range of applications from serving as feedstock in commercial use to making stock solutions for workup procedures. The Sigma-Aldrich portfolio of inorganic acids spans products with various acidity (pKa values measured in water):

• Hydrogen Halides (pKa ∼ 3.17, -8.0, -9.0 for HF, HCl, HBr)
• Boric Acid (pKa ∼ 9.23)
• Nitric Acid (pKa ∼ -1.3)
• Phosphoric Acid (pKa ∼ 2.12, 7.21, 12.32)
• Sulfuric Acid (pKa ∼ -3.0, 1.99)

Since most inorganic acids can be highly corrosive, accidents involving a spill can be catastrophic. However, one of the salient features of some of our products is that Sigma-Aldrich^® provides certain inorganic acids in shatter-resistant, high-density polyethylene (HDPE) bottles. This packaging helps to avoid some of the shock from accidentally dropping the bottle and helps to contain the spill. Other advantages to our HDPE bottles are that they are recyclable and can afford some inorganic acids to be shipped in case packs.

Search below for the inorganic acids to fit your research needs.