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Sodium Dichloroisocyanurate (SDIC)

CAS No. 2893-78-9

Molecular formula: (C3Cl2N3O3)Na           Molecular weight: 219.95

Structural Formula:



SDIC is water soluble, it has properties of high effective, instant effective, wide range and safety. SDIC has h3 fungicide effect, even at dosage of 20ppm, the fungicide ratio can reach to 99%. SDIC has good stability, can be preserved for half year with less than 1% loss of effective chlorine, and cannot be deteriorated at 120℃, cannot be flamed.


ItemsGrade IGrade II
Available chlorine, %60.0min56.0min
Moisture, %3.0max7.0max
pH (1% solution)5.5-7.0


SDIC can be used as algae disinfector in circulating cool water system and swimming pool. When used in circulating cool water system, the dosage of 15-20ppm every 2-3 days in summer is preferred, in spring and autumn, every 3-5 days and in winter every 5-7 days. For insurance of effects, nonoxidative disinfector may be also added into this product.

Package and Storage:

50kg/drum,customers’ requirement. Storage for one year in shady room and dry place.

Safety Protection:

Stimulation to skin and eye, protected with eye-glass and glove in operation. Once contacted, flush with water.