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BOEING PROCESS: OAKITE LNC NON-CHROMATED DEOXIDIZER B-232 – Naltic Industrials LLC

Boeing Titration Procedure for Oakite Deoxidizer LNC

Nitric Acid Determination For Boeing Procedure B-232

1. PROCEDURE NO.:
2. PROCESS:
3. DETERMINATION:

4. REAGENTS:

 

B-232
OAKITE LNC NON-CHROMATED DEOXIDIZER
Nitric Acid

a. Potassium fluoride solution – Dissolve 110 grams KF∙2H₂O in 1 L of distilled water.
b. 1.0 N sodium hydroxide

5. PROCEDURE

a. Place a 15.0 mL sample in a 250 mL Erlenmeyer flask. Dilute to approximately 75.0 mL with distilled water.
b. Add 50.0 mL of potassium fluoride solution.
c. Using a pH meter and 1.0 N sodium hydroxide, titrate rapidly, to pH 11 (reaction is slightly reversible).

6. REACTION:

HNO3 + NaOH 🠒  NaNO3 + H₂O 
7. CALCULATION:
(63.01) x (normality of NaOH) x (mL NaOH – 1.2) / (sample size) = g/L Total Acidity (expressed as HNO₃)
8. ANALYTIC PRECISION:
  1. ±1.0 g/L
For an official Boeing signed procedure please contact us.