Pharmacopoeia standards and packaging materials for vitamin C effervescent tablets

Vitamin C effervescent granules containing vitamin C (C6H8O6) should be 93.0%-107.0% of the labeled amount.

[Properties] This product is light yellow particles; it has a fragrant air and a sweet and sour taste.

[Identification] (1) Take an appropriate amount of the fine powder of this product (approximately equivalent to 0.2g of vitamin C), add 10ml of water to dissolve the vitamin C, filter, and the filtrate according to the test of vitamin C identification (1) shows the same reaction.

(2) Take an appropriate amount of fine powder of this product (approximately equivalent to 10mg of vitamin C), add 10ml of water, shake to dissolve vitamin C, filter, and take the filtrate as the test solution; take another vitamin C reference substance, dissolve and dilute with water Make a solution containing about 1mg in 1ml as a reference solution. According to thin layer chromatography (general rule 0502) test, draw 2μl of each of the above two solutions, respectively spot on the same silica gel GF254 thin layer plate, use ethyl acetate-ethanol-water (5:4:1) as the developing solvent, expand , Dry it, and immediately (within 1 hour) inspect under UV light (254nm). The position and color of the main spot displayed by the test solution should be the same as that of the reference solution.

[Inspection] Acidity Take 7.5g of this product, add 100ml of water, and after dissolving completely without bubbles, determine according to law (General Rule 0631), the pH should be 4.5-5.5.

Others should comply with the relevant regulations under granules (General Rule 0104).

[Assay] Take the contents under the difference of the filling amount, mix evenly, accurately weigh an appropriate amount (approximately equivalent to 0.2g of vitamin C), add 100ml of freshly boiled cold water and 10ml of dilute acetic acid to dissolve the vitamin C, add starch instructions Solution 1ml, immediately titrate with iodine titrant (0.05mol/L) until the solution turns blue and does not fade for 30 seconds. Each 1ml of iodine titrant (0.05mol/L) is equivalent to 8.806mg of C6H8O6.

【Category】Same as vitamin C.

【Specifications】0.2g

[Storage] shading, sealed, and stored in a dry place.