Industrial methyl chloride (4)

4.

4.

The sample is vaporized and bubbled into the water to absorb the acidic substances contained in the sample

4.

4.

Figure 6 Absorption bottle

4.

4.

4.

4.

4.

4.

4.

Add 100 mL of neutral water to the three absorption bottles, and connect the absorption bottles in series with a tube

4.

The acid content expressed in mass percentage (calculated as HCl) X1 is calculated according to formula (2):

Where: V—volume of standard titration solution of sodium hydroxide consumed by titration, mL;

c— The actual concentration of sodium hydroxide standard titration solution, mol/L;

m—the mass of the sample, g;

0.

4.
3.
6 Allowance

Take the arithmetic mean of the two parallel determination results as the determination result
.
The difference between the two parallel determination results is not more than 0.
0002%
.

4.
4 Determination of moisture

4.
4.
1 Method summary

The water in the sample reacts quantitatively with the iodine in the electrolyte.
The consumption of iodine can be obtained from the electricity used to electrolyze the same amount of iodine.
The measured water quality can be read on the digital display
.

4.
4.
2 Apparatus and equipment

4.
4.
2.
1 Sampler: as shown in Figure 2
.

4.
4.
2.
2 Sampler catheter: as shown in Figure 3
.

4.
4.
2.
3 Injection needle: length 150mm～200mm, diameter Φ0.
5mm
.

4.
4.
2.
4 Electricity Moisture Tester: as shown in Figure 7, or other moisture testers that can meet the analysis requirements
.

Figure 7 Electricity Moisture Tester

4.
4.
2.
5 Balance: the maximum weighing is not less than 5000g, and the sensitivity is 0.
1g
.

Related links: Industrial methyl chloride (3)