In nature, there are many colorless crystals or white crystalline powders similar to anhydrous dextrose. While most taste unique, some are poisonous or contain impurities. Next, let’s take a look at how to identify the quality of anhydrous glucose.
- The infrared absorption spectrum of anhydrous glucose should be consistent with the control. Ph test: Take 2.0g of this product, dissolve it in 20ml of water, add 3 drops of phenolphthalein indicator solution and 0.2ml of 0.02mol/L sodium hydroxide solution, it turns pink.
- Take 0.2g, add 5ml of water to dissolve, and slowly drop it into the hot alkaline copper tartrate test solution. The red precipitate of cuprous oxide proved to be anhydrous glucose.
- Dissolve the arsenic salt in 5ml of water, add 5ml of dilute sulfuric acid and 0.5ml of potassium bromide solution, and heat in a water bath for 20min to keep a small amount of excess bromide. When necessary, try to add potassium bromide solution to evaporate the water. As specified (0.0001%), add 5 ml of hydrochloric acid and 28 ml of water at any time for inspection.
- Dissolve calcium salt and 10 ml of water, add 1 ml of ammonia test solution and 5 ml of ammonium oxalate solution, shake well, and leave for 1 hour, such as turbidity and calcium standard solution according to the accuracy of 0.1250 g calcium carbonate and 500 ml volumetric flask, Add 5 ml of water and 0.5 ml of hydrochloric acid to dissolve, and shake well with water. Calcium (ca) is equivalent to 0.1 mg per 1 ml. The control solution was made from 1.0 mL and should not be thickened (0.01%).
Anhydrous dextrose is a white granular powder that functions as a white granular powder. In the familiar food and beverage industry, this substance is primarily used as a sweetener, put into the beverages and foods we eat. In addition, in the leather shoe industry, the drug is also very effective as a reducing agent. Pharmaceutical companies are mainly used to make enteral nutrition solutions or prepare intravenous injections with a certain concentration.
Anhydrous glucose is a tissue that is afraid of water and high temperature. The place where this substance is stored should not have too high moisture. Only ventilation can have better storage effect and play its due role.
The above are four identification methods for the quality of anhydrous glucose. This substance can be drunk directly to supplement energy and nutrition, and can also be used as a medicine for the treatment of certain diseases. At the same time, it can play a role in fermentation industry, food industry, chemical industry, synthesis and transformation.