Question

What is the difference between a reagent-grade chemical and a primary standard?

Short answer

The fundamental standard is a compound's extremely precise base or reference material. However, because of its stringent requirements, it is only available in restricted quantities on the market. Alternative reference materials such as reagent-grade chemicals can be used, however their purity is not as high as the primary standard.

Step-by-step solution

Define the reagent.

This chemical's highest purity commercially available. This substance does not have any recognised requirements set by the American Chemical Society.

Now differentiate between a reagent grade and chemical grade.

• Because of its extreme purity, primary standard is used as a reference material in analytical procedures.
• However, meeting the criteria or conditions is quite difficult.
• That is why, despite its lower purity, an alternate secondary standard known as reagent-grade chemical is frequently used.
• However, if purity is thoroughly determined, it can be advantageous.

• The fundamental standard is a compound's extremely precise base or reference material.
• However, because of its stringent requirements, it is only available in restricted quantities on the market.

Alternative reference materials such as reagent-grade chemicals can be used, however their purity is not as high as the primary standard.