Pharmaceutically grade methylcellulose ethyl cellulose 1kg 25kg

Medicinal grade methylcellulose Ethyl cellulose 1kg 25kg Pharmaceutical grade methylcellulose Ethyl cellulose 1kg 25kg methylcellulose JiajiXianweisuMethylcellulose This product is methyl ether cellulose
.

According to the calculation of dried products, 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 in water into a clear or slightly turbid gelatinous solution; Insoluble
in absolute ethanol.

【Identification】(1) Take 1g of this product, add 100ml of boiling water, stir evenly, cool in an ice bath to form a uniform clear or slightly turbid solution, take the appropriate amount of the solution, place in a test tube, slowly add 2ml of sulfuric acid solution of 0.
035% anthraconone along the wall of the test tube, place, and show a blue-green ring
at the interface between the two liquids.

(2) Take the appropriate amount of the solution under (1), heat, the solution produces a mist or flake precipitation, after cooling, the precipitation dissolves
.

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

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