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8.
Product Standard
9.
Quality inspection
1) Determination of ester content
Accurately weigh 0.
8g sample (accurately to 0.
0002g) and place it in a 250mL esterification bottle
.
Add 50mL 0.
In the formula: V 1 ——the volume of the hydrochloric acid standard solution consumed in the blank experiment , mL;
V 2 ——The volume of hydrochloric acid standard solution consumed by the sample, mL;
c——molar concentration of hydrochloric acid standard solution, mol/L;
G——The mass of the sample, g
.
2) Moisture measurement
(1) Determination: Take 2 dry vials with rubber stoppers, accurately add 1.
0 mL of anhydrous methanol, titrate with iodine- sulfur dioxide solution to the end point, without recording the reading, then quickly add 2.
0 mL of the sample, and stir under the electromagnetic stirrer.
Titrate to the end point immediately with iodine-sulfur dioxide solution
.
(2) Calculation:
In the formula: V——volume of sulfur dioxide solution that consumes iodine for titrating the sample, mL;
T——The titer of iodine-sulfur dioxide solution to water, g/mL;
d—The density of the sample, g/cm 3
.
10.
Product use
Used as organic solvent, extractant, dehydrating agent; used in collodion, nitrocellulose, varnish, artificial leather, medicine, plastic and perfume industries
.
As a solvent, it is mainly used as a solvent for the manufacture of nitrocellulose, cellulose acetate and other cellulose derivatives.
It can also be used as camphor, mineral oil, grease, synthetic resin, natural rubber, synthetic rubber, paint, vinyl compounds, and styrene compounds.
compound, A- methacrylic polymeric articles, bitumen, perfumes and the like produce a solvent
.
Further, in the pharmaceutical industry as producing penicillin G, procaine penicillin, novobiocin, prothionamide amine was distilled off, indomethacin, dexamethasone acetate, methyl testosterone, diketene other intermediates
11.
Safety measures
(1) This product has anesthetic stimulating effect, and the maximum allowable concentration in the workplace is 0.
02%
.
The workshop should be well ventilated and the equipment should be closed
(2) This product is flammable, easy to burn when exposed to fire, high temperature, and oxidant
.
Keep away from sources of ignition and fire, and the maximum storage temperature should not exceed 30°C
(3) Packed in iron drums, with signs of "flammable" and "drugs"
.
Store in a cool, ventilated place
Related Links: Production Principle and Process Flow of Butyl Acetate
