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Available in white colored crystalline powder form, sodium dichloroisocyanurate is known for its distinctive smell that resembles to the odor of chlorine gas. The chlorine content of this chemical ranges between 60% to 64.5%.The chemical properties of this chemical remain stable under different temperature conditions. Its chlorine e content tends to decrease in 1% amount when it is placed in moisture and high temperature prone environment. With having 25%(25℃) water solubility, this chemical is reckoned for its easy dispersibility in water. Its water based solution is basically a type of weak acid that has 5.8 to 6.0. PH level. This ph range remains unchanged even when the density of this solution raises. This chemical produces hypochlorous after diluting in water. The hydrolysis constant of this solution is 1×10-4 more than the solution of chloramines-T. The chemical stability of its water based solution is unsatisfactory. It tends to lose higher amount of active chlorine when exposed to UV rays. Low density solution of sodium dichloroisocyanurate is highly effective in destroying all sorts of fungi, bacteria and virus that include hepatitis virus. This water based solution is acknowledged for its high disinfecting properties, cost effectiveness, higher amount of chlorine and easy to comprehend mechanism. Moreover, sodium dichloroisocyanurate has less toxin content and it is preferred over chloramines-T and bleaching powder in terms of its disinfection properties. Along with potassium permanganate, this chemical powder generates acid chloride smoke fumigant or chlorine smoke fumigant when it is blended with acid synergist or metal reduction agents. The produced smoke fumigant emits gas when burnt. The discharged gas has high disinfecting properties.
China uses different types of chlorine based sterilizing agents like bleaching powder, sodium hypochlorite, dibasic tricalcium hypochlorite and Sodium dichloroisocyanurate. The sterilization capacity of these disinfecting agents is measured on the basis of their chlorine content. It means, the sterilization effect of these agents is proportionate to their chlorine amount. After diluting in water, these sterilizing agents produce hypochlorous with high disinfecting characteristics. The purification capacity of sodium dichloroisocyanurate is greater than different types of chloramines sterilizers for its stable hydrolysis reaction. The low density solution of sodium dichloroisocyanurate possesses less disinfecting properties than hypochlorite sterilizers, although its high density solution can act against weak acid. In brief, it can be said that fumigating properties of sodium dichloroisocyanurate varies as per the concentration level of its solution. All these disinfecting agents discussed here possess high anti microbial properties that enable these to act against vegetative bacterial spore, fungal spore, virus and bacteria. Sodium dichloroisocyanurate is classified under chlorine based isocyanuric acid sterilizer. Chemicals like trichloroisocyanuric acid, chloroisobromine acid, potassium dichloroisocyanurate and dichlord isocyanurice acid also belong to the same class like sodium dichloroisocyanurate. All these sterilizing agents have high fumigation properties and these are useful for preventing growth of vegetative bacteria, bacterial spore, fungal spore and virus. These chemicals come in handy in dealing with hepatitis virus; bacteria like staphylococcus aureus and escherichia coli; fungus and bacterial spores like spores of bacillus subtilis var niger. sodium dichloroisocyanurate is capable of destroying the proliferation of 99.9% Escherichia within half an hour of their application. It takes only five minutes to kill all sorts of hepatitis virus and five to half an hour to destroy bacterial spores. Moreover, this product is efficient in dealing with hepatitis B surface antigen. Its anti bacterial properties become more prominent in its acid based solution. It shows its high efficacy in killing bacteria in its low ph level. Its chemical properties are stable and its composition does not contain any cancer causing element. It is ideal for sterilization of various processing machinery used in food units, vehicles, water, fishpond, tableware, animal building, utensils, silk farming area and food to name a few. The above mentioned details has been assembled by the Chemicalbook Bai Linlin.
Air & Water Reactions
Sodium dichloroisocyanurate (SDIC, sodium troclosene, troclosenum natricum or NaDCC) powder, granules or tablets
White powder, granules or tablets
Active chlorine, %
45, 50, 56, 60min
Water insoluble matter, %
Granule size: 8-30 mesh, 20-40mesh, 20-60mesh
Tablet: 0.15g, 0.5g, 1g, 2g, 3g, 5g, 10g, 15g, 20g, 150g