ASTM E1584 Assay of Nitric Acid

The assay of nitric acid by total acidity is covered by the test method ASTM E1584. This test procedure is appropriate for nitric acid values of 50 to 70 percent. The final results of this method are displayed keeping in view the international standards and inch-pound units.

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Scope:

The ASTM E1584 test method uses total acidity to determine nitric acid concentration. Many applications of nitric acids, such as specification compliance and factory control, rely on the concentration of the acid. This standard covers the properties of nitric acid. It determines its applications and specifications. The method proceeds with the quality check, heat treatment, and the testing of the chemical composition of materials. The results obtained from this method help in quality control, research, and performance evaluation of nitric acid.

Procedure:

The ASTM E1584 test specimen is manufactured as per the specified measurements and limits are specified for the chemical composition of the material. The analysis is done in accordance with the agreement between the purchaser and the producer. Using phenolphthalein as the end-point indicator, a weighted sample of acid is diluted in water and titrated with 1.0 N sodium hydroxide solution.

Video 01: Effect of Nitric Acid on Gold

Specimen Size:

The specimen size should be as per the requirements. In this ASTM E1584 test, 1.0 N NaOH solution is taken to perform titration.

Data:

Calculate the assay as percent nitric acid by applying the formula where:

V = corrected NaOH solution required for titration of the sample, mL,

N = normality of the NaOH solution corrected for the temperature at time of titration, and

W = sample used, g.

Conclusion:

The ASTM E1584 test method is specifically important for the quality assurance of nitric acid. Its role in the various services is determined. A top service provider in this regard is the Infinita Lab which ensures efficient and reliable testing.