Industrial Caprolactam Determination of Volatile Alkali Content—Titration Method after Distillation (2)

6 Analysis steps

6.

Weigh about 20g laboratory samples, accurate to 0.

6.

While measuring, follow the same steps, but do a blank test without adding samples

7 Result calculation

The volatile alkali content x (mmol/kg) expressed in sodium oxygen oxide (NaOH) is calculated according to formula (1):

Where:

c——The accurate value of the concentration of sodium hydroxide standard titration solution, the unit is mole per liter (mol/L);

V0——The value of the volume of the sodium hydroxide standard titration solution used in the blank test, in milliliters (mL);

V1——The value of the volume of the sodium oxide standard titration solution used in the determination of the sample, in milliliter (mL);

m——The value of the mass of the sample, in grams (g)

The difference between the two parallel determination results is not more than 0.

The result should be rounded to one decimal place in accordance with GB/T 8170

8 reports

The report should include the following:

a) All information about the sample, such as sample name, batch number, sampling location, sampling date, sampling time, etc.

b) Code of this part:

c) Analysis results and presentation method:

d) Details and descriptions of any abnormal phenomena observed in the measurement;

c) The name of the analyst and the date of analysis, etc.

f) Any description of operation or test conditions not included in this section

Related Links: Determination of Volatile Alkali Content of Caprolactam for Industrial Use—Titration Method after Distillation (1)