Do you know how to detect methylene blue

We know that methylene blue can be used to make inks and lakes, as well as dyeing biological and bacterial tissues. It can also be made into double salt with ZnCl2, which can be used for dyeing cotton, hemp, silk fabrics, paper and bamboo and wood. In addition, it can be mixed with basic violet 5BN and yellow dextrin in a ratio of 78: 13: 9 to form basic royal blue. The use of methylene blue is multi-faceted. In our company, it is used for scientific research. Apart from the use of methylene blue, do you know how to detect methylene blue?

Detection of methylene blue: take about 10mg of this product, add 50ml of water to dissolve, and it will appear dark blue; dispense 10ml of solution, add 1ml of dilute sulfuric acid and 0.1g of zinc powder, the blue color will disappear, and the filtrate will be filtered. 1 drop of hydrogen oxide test solution, reappears blue; another 10ml of solution, add a few drops of potassium iodide test solution, that is, a dark blue fluffy precipitate is generated. After sinking, the upper layer solution was light blue; then take 10ml of the solution and add 0.1mol / l iodine solution drop, which showed dark brown; add 0.1mol / l sodium thiosulfate solution to reappear blue.

The principle of using methylene blue:

1. Use natural pigments widely recognized by the world;

2. Toning foods that are recognized by various countries as being able to be toned;

3. The amount of pigment added when coloring food should be lower than the highest content control.

Methylene blue CAS number: 7220-79-3

Product alias: methylene blue / methylene blue / methylene blue / methylene blue / methylene blue / magenta blue / methylene blue / alkaline blue 9 / tetramethyl blue / methylene blue / methylene blue / alkaline lake Blue BB / Basic Methylene Azure / Salt Lake Blue / Salt Lake Blue BB / Methylene Sky Blue / 3,7-bis (dimethylamino) phenothiazine-5-onium chloride / Methylene Blue Tri Water / Methylene Blue / Methylene Blue / Chloro-3,7-bis (dimethylamino) phenothiazine-5-ium / Methylene Blue trihydratee

Product packaging: 25g / 500g / 250g / 25ml

Product specifications: BS / ultra-pure / IND, 82% / reagent grade, 98%

The types of biological reagents imported by our company from the United States include: amino acids, enzymes, proteins, antibiotics, plant hormones, nucleic acids, carbohydrates, pigments, vitamins, separation consumables, surfactants, buffers, media, antibodies and other biochemical reagents , Need "methylene blue" can leave a message on this site, or you can call directly to negotiate with our company salesperson.