AMINOPHYLLINE TABLETS Theophytfine and Ethylenediamine Tablets U

descnbed under Aminophylline ph Between SB and 100, Appendix G 11 Other requirements Complies with the requirements of rests stated under Injectable Preparations (Injections) Assay For theophylhne Measure accurately a volume equivalent to 0. 25 g of aminophylline and dilute with water to 40 ml. Add B ml of dilute ammonia solution and complete the Assay described under Aminophylline beginning at the words "Add 20 0 rnl of 0 1M silver nitrate ". Each ml of 0.1M silver nitrate is equrvalent to 001802 g of C7H8N4O2 For ethylenediamine - To a volume equivalent to about 0 .25 g of aminophylline, add sufficient water to produce 30 ml Trtrate with D 1M hydrochloric acid using methyl orange solution as indicator Each ml of o.1M hydrochloric acjd is equrvalenl to 0 003005 g of C^HgN;. Calculate the amount of CjHaNj present for each g of C7H8N4 found AMINOPHYLLINE TABLETS Theophytfine and Ethylenediamine Tablets Usual strength 100 mg Storage Store in tightly-closed, light-resistant containers. Labelling. The label states the strength in terms of the equivalent amount anhydrous aminopnylline STANDARDS Am inophyilline Tablets contain theophyliine, C7H8N4O2, equrvalenl to not less than 90 6 per cent and not more than 90 .8 per cent of the stated amount of arrnnophylline, and ethylenediamine,C2H8N2,aa