Use of pharmaceutical grade methylcellulose cas9004-67-5

 Pharmaceutical grade methyl cellulose cas9004-67-5 Uses This product is methyl ether cellulose
.

Calculated according to the dry product, the methoxy group (-OCH3) should be 27.
0% to 32.
0%
.

【Properties】This product is white or off-white fibrous or granular powder
.

This product swells into a clear or slightly turbid colloidal solution in water; it is insoluble in absolute ethanol
.

[Identification] (1) Take 1g of this product, add 100ml of boiling water, stir evenly, cool it in an ice bath to form a uniform clear or slightly turbid solution, take an appropriate amount of the solution, put it in a test tube, and slowly add 0.
035 % anthrone in sulfuric acid solution of 2ml, placed, a blue-green ring appeared at the interface of the two liquids
.

(2) Take an appropriate amount of the solution under the identification item (1), heat it, the solution will produce a mist or flake precipitate, and after cooling, the precipitate will dissolve
.

(3) Take an appropriate amount of the solution under identification (1), pour it on a glass plate, and form a tough film after the water evaporates
.

(4) Take 0.
1 ml of the solution under identification (1), add 9 ml of sulfuric acid solution (9→10), shake, heat in a boiling water bath for 3 minutes, quickly cool in an ice bath, add 0.
2% ninhydrin solution 0.
6ml, placed at 25°C, the solution turns red and does not change to purple within 100 minutes
.

　　(5) Take 50ml of the solution under identification (1), put it in a beaker containing 50ml of water, immerse the thermometer in the solution, stir and heat up at a speed of 2 to 5°C per minute, the temperature at which the solution appears turbid shall not be lower than 50 °C
.

1.
This product can be used in the coating industry as a film former, thickener, emulsifier and stabilizer, which can make the coating have good wear resistance, fluidity, leveling and stability
.

It is used as an adhesive and suspending agent in building materials and ceramic industries, and has the functions of reducing flocculation, improving viscosity and retaining water
.

It can be used as sizing agent, thickener and surface treatment agent in textile and printing and dyeing industries
.

It can be used as thickener, dispersant, emulsifier, suspending agent and excipient in the pharmaceutical and food industries
.

In the synthetic resin and plastic industries, it can be used as a suspending agent and dispersing agent, etc.
2.
A dispersing agent for polyvinyl chloride
.

It is used as film-forming agent and adhesive in cosmetics, medicine and food industry, sizing agent for textile printing and dyeing, coating film-forming agent and thickener
.

In the construction industry, it is used as a mixture for cement, mortar, joint mortar,
etc.

3.
Mainly used as thickener, also as dispersant and emulsifier
.

In the construction industry, using its excellent water retention, shape retention and lubricity, it is often used as a cement slurry mixture, water retention agent and adhesive
.

In the food industry, it is used as a thickener, emulsifier, excipient, dispersant,
etc.

In the coating industry, it is used as a molding agent, thickener, emulsifier and stabilizer
.

Used as a sizing agent in the textile industry
.

It is used as dispersant and suspending agent in synthetic resin industry
.

This product also has a certain surface active function and is impermeable to animal, vegetable and mineral oils and fats
.

It can also be used in cosmetics, ink, medicine and leather processing
.

4.
Used in cosmetics as adhesive, thickener, film-forming agent, etc.