二氯二甲基海因杀灭微生物作用与对金属腐蚀性试验观察

EXPERIMENTAL OBSERVATION ON GERMICIDAL EFFICACY AND METAL CORRO SIVENESS OF DICHLORO-DIMETHYL HYDANTOIN

二氯二甲基海因为含６４ ．４５ ％ 有效氯的白色粉末或颗粒。该消毒剂含５０ ｍｇ／Ｌ有效氯溶液对大肠杆菌作用２ ｍｉｎ，含１００ ｍｇ／Ｌ有效氯溶液对金黄色葡萄球菌作用１０ ｍｉｎ，含１０００ ｍｇ／Ｌ 有效氯溶液对枯草杆菌黑色变种芽胞作用２０ ｍｉｎ，杀灭率均＞ ９９ ．９０ ％ 。含１０００ ｍｇ／Ｌ有效氯溶液作用１５ ｍｉｎ ，可将ＨＢｓＡｇ 抗原性完全破坏。粉剂在５４ ℃放置１４ ｄ，有效氯下降率为６ ．５０ ％ 。其１ ５００ ｍｇ／Ｌ有效氯溶液对不锈钢、铝、铜、碳钢分别有轻度至重度腐蚀作用。

Dichloro - dimethyl hydantoin is white powder or granules containing 64 .45 % avail able chlorine. The killing rates of Escherichia coli exposed in the solution containing available chlorine 50 mg/Lfor 2 min , Staphylococcus aureusexposed to the solution containing available chlorine 100 mg/Lfor 10 min and sporesof Bacillussubtilis var. niger exposedto thesolution containing available chlorine 1000 mg/Lfor 20 min were > 99 .9 % . The solution containing available chlorine1000 mg/Lwith a15 min contacttimecould destroy completelytheantigenici ty of HBsAg .The available chlorine contentin its powder decreased by 6 .50 % after storing at 54 ℃for 14 days.Its solution containing available chlorine 1500 mg/Lhad slightly to heavily corrosive effecton stainlesssteel,aluminum ,copperand carbon steel.