Medicinal grade crovidone dextrin magnesium stearate coating powder 15kg

Pharmaceutical grade cross-crovidone dextrin magnesium stearate 15kg coating powder pharmaceutical grade cross-polvidone dextrin magnesium stearate coating powder cross-linked povidone Jiaolian Juweitong Crospovidone This product is N-ethylene-2-pyrrolidone synthetic crosslinked water-insoluble homopolymer
.

The formula is (C6H9NO)n, where n represents the mean number of
1-vinyl-2-pyrrolidone links.

According to the calculation of anhydrous, the nitrogen content (N) should be 11.
0% to 12.
8%.


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

【Identification】(1) Take 1g of this product, add 10ml of water to shake to disperse into suspension, iodine test solution 0.
1ml, shake for 30 seconds, add starch indicator solution 1ml, shake, should be no blue generation
.

(2) The infrared light absorption pattern of this product should be consistent with the map of the control product (General Rule 0402
).

【Check】pH Take 1.
0g of this product, add 100ml of water and stir to make a uniform suspension, and determine according to law (General 0631), the pH value should be 5.
0 ~ 8.
0
.

Soluble matter in water Take 25.
0g of this product, put it in a beaker, add 200ml of water, stir for 1 hour, transfer it to a 250ml measuring flask with water, dilute it with water to the scale, shake well, let stand (generally not more than 24 hours), take the upper solution, centrifuge for 30 minutes (3500 rpm) per minute, take the supernatant filtered through the 0.
45 μm membrane, take 50ml of precision refill filtrate, place in a beaker that has been dried at 105 ° C for 3 hours and weighed, evaporated to dry, dried at 105 ° C for 3 hours, and the residual residue must not exceed 50mg (1.
0).
%）
。
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