Continuing our new series of chemical recipes, we bring you week 14 – nitric acid (HNO₃).
Remember that when preparing any of our recipes, you should:
- Always wear appropriate PPE including eye protection and gloves.
- Always add acid to water (never water to acid).
- Use a full functional fume cupboard.
- Always carry out a risk assessment when using any chemicals.
- Follow all recommended safety procedures and adhere to the label instructions, hazard warnings and local legislations.
What is nitric acid?
Nitric Acid is a corrosive liquid inorganic acid that is toxic. Nitric acid is colourless when pure but has a yellowish appearance when it is old due to the collection of nitrogen oxides. It is used especially as an oxidizing agent, in nitrations, and in making organic compounds (such as fertilizers, explosives, and dyes. It ionizes readily in solution, forming a good conductor of electricity. It reacts with metals, oxides, and hydroxides, forming nitrate salts.
Scan the QR codes for classroom experiments to follow with your safe and prepared nitric acid.