Capsule "Character" This product is cylindrical, fastened by the cap and body two sections of the rigid and flexible air sac. The capsule body should be clean and bright, uniform color, smooth incision, no deformation, no odor. This product is divided into transparent, translucent, opaque three kinds.
(1) Take this product 0.25g, add water 50ml, heating to dissolve, put cold, take solution 5ml, aggravate potassium chromate test fluid-acid (4:1) of the mixture of several drops, that is, the formation of orange-yellow floc precipitation.
(2) Take the remaining solution 1ml under the identification (1), add water 50ml, shake evenly, add tannic acid test liquid number drops, that occurs turbidity.
(3) Take this product about 0.3G, in the test tube, add sodium lime a little, heating, the resulting gas can make moist red litmus blue.
Capsule "Check" the tightness of the product 10 tablets, Capsule with the thumb and forefinger lightly pinch capsule ends, the rotation pulls out, may not have the bond, the distortion or the rupture, then fills the talcum powder, will cap, the body sleeve, by the grain in the 1m height to fall directly in the thickness to the 2cm plank, should not leak the powder, if has the small leakage powder, may not surpass 2 tablets. If more than, should take another 10-second retest, should be in accordance with the provisions.
Brittle-crushing degree of 50 tablets, placed on the surface dish, moved into the saturated with magnesium nitrate in the dryer, set 25 Shan ± 1 Shan thermostat 24 hours, remove, Capsule immediately separate into the upright in the plank (thickness 2cm) on the glass tube (inner diameter of 24nm, length 200nm), the cylindrical weight (material for PTFE, diameter of 22mm, heavy 20g ± 0.1g) from the glass pipe at the mouth of the free fall, depending on whether the capsule rupture, if there is a rupture, not more than 15 tablets.
Disintegration time to take this product 6 tablets, filled with talcum powder, according to disintegration time limit inspection method (appendix Shan a), Capsule capsule under the method of inspection, each grain should be dissolved or disintegrating in 10 minutes. If 1 grains can not dissolve or disintegrate all, should take another 6-second retest, should be in line with the provisions.
Sulfite (in so <>) take this product 5.0g, put the long neck round bottom flask, heating water 100ml to dissolve, add phosphoric acid 2ml and sodium bicarbonate 0.5g, immediately connect the condenser tube, to 0 1 Mol L iodine solution 15ml as receiving liquid, collect distillate liquid 50ml, add water to 100ml, shake evenly, take 50ml, water bath evaporation, at any time to replenish the amount of water, Capsule steaming to the solution almost colorless, add water to 40ml, according to sulfate inspection method (Appendix Shan B) Inspection, If the turbidity, compared with the standard potassium sulfate solution 7.5ml made of the control fluid, not more dense (0.02%).