Nitric Acid 69% (Analytical Use)

Description

Need Nitric Acid for Analytical Use?

• We supply nitric acid for analytical use in 2.5L containers, with discounts available for bulk orders
• This product is sold as a 69-71% solution, with minimum levels of impurities in concentrations less than 0.5 ppm chloride, 2 ppm sulphate, 0.1 ppm lead; 0.01 ppm arsenic, 1 ppm iron and 0.001% non-volatile matter
• We also offer many other options with all our products, including customised labelling and specific pack sizes

How Can Nitric Acid be Synthesised in the Lab?

Industrially, nitric acid is synthesised by the reaction between nitrogen dioxide and water. However there are other ways this compound can be synthesised, but these are typically restricted to a lab as they’re not commercially viable.

Thermal Decomposition of Copper (II) Nitrate

This reaction produces nitrogen dioxide and oxygen, which are subsequently passed through water to generate nitric acid:

2 Cu(NO₃)₂ → 2 CuO (s) 4 NO₂ (g) O₂ (g)

The Reaction Between Nitrate Salt and Sulphuric Acid

Nitric acid can also be synthesised via a reaction between any nitrate salt (for example, sodium nitrate) and a strong solution of sulphuric acid (over 96%), followed by distillation at 83°C (nitric acid boiling point). All non-volatile matter (mostly metal sulphate) remains in the distillation container:

2 NaNO₃ H₂SO₄ → 2 HNO₃ Na₂SO₄

Obtaining Pure Solutions

Typically solutions go up to 68% acid, which is the maximum possible azeotrope with 32% water. However, for specialised applications, it’s possible to increase the concentration via distillation using magnesium nitrate or sulphuric acid as dehydrating agents.

It’s important to conduct this procedure in all-glass equipment and at low pressure to limit decomposition of nitric acid.

Any Size You Need

We supply our chemicals in pack sizes ranging from extremely small packs to bulk containers, to suit your needs. We also offer the possibility to get specific pack sizes or bespoke products. Simply contact a member of our customer support team to get more information.