磺胺噻唑片有时因药片受污或其他原因而不能作为药用。我們通过簡便的方法,回收其中的磺胺噻唑,經过处理后再供药用。茲把回收方法簡介如下:取浓盐酸1分、水9分,配制成稀酸液。把粉碎好的废磺胺噻唑粉,逐漸加入稀酸液中,边加边攪拌;待溶解后,加适量活性炭进行脫色,过滤得澄清滤液。然后用含有0.1%偏重焦亚硫酸鈉的氢氧化鈉溶液,进行中 Sulfathiazole tablets sometimes can not be used as medicine because of tablet contamination or other reasons. We through the easy way to recover the sulfathiazole, after treatment for medicinal purposes. The recovery method is hereby introduced as follows: Take 1 point concentrated hydrochloric acid, water 9 points, formulated as dilute acid. The smash good waste sulfathiazole powder, gradually added dilute acid, while adding edge stirring; to be dissolved, add the appropriate amount of activated carbon for bleaching, filtration to clarify the filtrate. Then it was done with sodium hydroxide solution containing 0.1% sodium metabisulfite