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Sodium Dichloroisocyanurate (SDIC) is produced as a result of reaction of cyanuric acid with chlorine.
Sodium Dichloroisocyanurate (SDIC) is a well established disinfectant used for many purposes including wound cleansing, hospital use, sterilizing babies bottles, disinfection of water for human consumption and disinfection of swimming pools.
Sodium Dichloroisocyanurate (SDIC) is the sodium salt of a chlorinated hydroxytriazine and is used as a source of free available chlorine, in the form of hypochlorous acid, for the disinfection of water.
CAS Number: 2893-78-9
Molecular Formula: C3Cl2N3NaO3
Molecular Weight: 219.95
EINECS Number: 220-767-7
Synonyms: 1,3,5-Triazine-2,4,6-(1H,3H,5H)trione,1,3-dichloro,sodiumsalt, 1,3,5-Triazine-2,4,6(1H,3H,5H)-trione,1,3-dichloro-,sodiumsalt, 1-sodium-3,5-dichloro-1,3,5-triazine-2,4,6-trione, 3,5-triazine-2,4,6(1h,3h,5h)-trione,1,3-dichloro-sodiumsalt, 4,6(1h,3h,5h)-trione,1,3-dichloro-s-triazine-sodiumsalt, 4,6(1h,3h,5h)-trione,dichloro-s-triazine-sodiumsalt, acl60, BasolanDC(BASF), Sodium Dichloroisocyanurate, Dikonit, Simpla, 2893-78-9, Troclosene sodium, Dichloroisocyanuric acid sodium salt, Caswell No. 759, Fi Clor 60S, Sodium dichloro-cyanurate, Sodium dichlorisocyanurate, Dichloroisocyanurate sodium, Dichloroisocyanuric acid sodium salt, ACL 60, CCRIS 4788, CDB 63, HSDB 4235, NCI-C55732, EINECS 220-767-7, UNII-07M9U9U0LK, Actisept, Clearon, EPA Pesticide Chemical Code 081404, Sodium dichloro-s-triazinetrione, Sodium troclosene, Neochlor 55, Sodium salt of dichloro-s-triazine-2,4,6-trione, 07M9U9U0LK, s-Triazine-2,4,6(1H,3H,5H)-trione, 1,3-dichloro-, sodium salt, NaDCC, DICHLOROSAN, Actisan, Prisept, Crente, Basolan DC, Fi Clor Clearon, Izosan G, CDB Clearon, Clearon CDB, DTXCID504994, Oniachlor 60, Neochlor 60P, TROCLOSENE SODIUM (MART.), Oxidan DCN/WSG, Surchlor GR 60, Clearon CDB 56, Hi-Lite 60C, Hi-Lite 60G, Hi-Lite G 60GW, SDIC 60P, Klorsept, EfferCept, ACL 56, Triclosene sodium, EfferCept SG, Troclosene sodique, Sterilization Water, RefChem:66985, SALUT sterilization water, dichloro-s-triazinetrione sodium, Dicloroisocianurato sodico dihidrato, USEPA/OPP Pesticide Code: 081404, Sal de sodio del acido dicloroisocianurico, Dichloro-cyanuric acid, sodium salt, dihydrate, Dichloro-s-triazine-2,4,6-trione, sodium salt, SODIUM DICHLORO-S-TRIAZINETRIONE AND DIHYDRATE, Sal de sodio del acido dicloroisocianuratico dihidratada, Sodium-1,3-dichloro-1,3,5-triazine-2,4-dione-6-oxide, 1,3-Dichloro-s-triazine-2,4,6(1H,3H,5H)trione sodium salt, 1,3,5-TRIAZINE-2,4,6(1H,3H,5H)-TRIONE, 1,3-DICHLORO, SODIUM SALT, SODIUM DICHLORO-S-TRIAZINETRIONE, (DRY, CONTAINING > 39% AVAILABLE CHLORINE), 220-767-7, Dichloro-s-triazinetrione sodium salt, DTXSID3024994, sodium 3,5-dichloro-2,4,6-trioxo-1,3,5-triazinan-1-ide, MFCD00006036, 1,3,5-Triazine-2,4,6(1H,3H,5H)-trione, 1,3-dichloro-, sodium salt, Dimanin C, SDIC, OCI 56, 1-Sodium-3,5-dichloro-s-triazine-2,4,6-trione, Sodium salt of dichloro-s-triazinetrione, CP 17254, Isocyanuric acid, dichloro-, sodium salt, Dichlorocyanuric acid, sodium salt, Klorsept (TN), 1-Sodium-3,5-dichloro-1,3,5-triazine-2,4,6-trione, Dichlorosymtriazine-2,4,6(1H,3H,5H)trione sodium derivative, 1,3,5-Triazine-2,4,6(1H,3H,5H)-trione, 1,3-dichloro-, sodium salt (1:1), C3Cl2N3NaO3, SCHEMBL28347689, sodium 1,5-dichloro-4,6-dioxo-1,3,5-triazin-2-olate, MSFGZHUJTJBYFA-UHFFFAOYSA-M, s-Triazine-2,4,6(1H,3H,5H)-trione, dichloro-, sodium salt, AKOS015955492, sodium 1,5-dichloro-4,6-dioxo-1,4,5,6-tetrahydro-1,3,5-triazin-2-olate, D08651, A819681, sodium, 1,3-dichloro-1,3-diaza-5-azanidacyclohexane-2,4,6-trione, sodium 1,5-bis(chloranyl)-4,6-bis(oxidanylidene)-1,3,5-triazin-2-olate.
Sodium Dichloroisocyanurate (SDIC) is a chemical compound widely used as a cleansing agent and disinfectant.
Sodium Dichloroisocyanurate (SDIC) is a colorless, water-soluble solid, produced as a result of reaction of cyanuric acid with chlorine.
The dihydrate is also known (51580-86-0 ) as is the potassium salt (2244-21-5 ).
Sodium Dichloroisocyanurate (SDIC) is a chemical compound that belongs to the family of chlorinated isocyanurates, which are derivatives of 1,3,5-triazine-2,4,6-trione containing two chlorine atoms and a sodium cation to balance the negative charge.
Chemically, Sodium Dichloroisocyanurate (SDIC) is represented by the formula C3Cl2N3NaO3, and it is commonly encountered as a white, crystalline powder or granular solid that is highly soluble in water.
Sodium Dichloroisocyanurate (SDIC) acts as a strong oxidizing agent because the chlorine atoms can be readily released as active chlorine species, which makes it highly effective for disinfection, sanitization, and bleaching applications.
Sodium Dichloroisocyanurate (SDIC) is widely used as a source of free chlorine, which exerts potent antimicrobial activity by oxidizing and destroying cellular components of bacteria, viruses, fungi, and other pathogens, thereby preventing their growth and spread.
Due to its stability in solid form, it is easier to store, transport, and handle compared to liquid chlorine, and it releases chlorine gradually when dissolved in water, providing long-lasting disinfecting activity.
Sodium Dichloroisocyanurate (SDIC), sodium salt, is a white crystalline powder, chlorine odor.
Sodium Dichloroisocyanurate (SDIC) is widely used as a stable source of chlorine for the disinfection of swimming pools and in the food industry.
Sodium Dichloroisocyanurate (SDIC) is a disfectant that can be used in hygiene and disease control, medical treatment, livestock farming, aquiculture and plant protection, etc, such as disinfect drink water, industrial water, dishware, swimming pools, livestock, poultry, fishes and environment disinfection as well as regular and preventative contagion disinfection.
Sodium Dichloroisocyanurate (SDIC) has a molecular weight of 219.95, a solubility (25°C) of 25g/100g water, and a pH value of 5.5-7.0.
Sodium Dichloroisocyanurate (SDIC), a chlorine-containing compound, operates as an effective biocide.
Its molecular structure allows for a slow and sustained release of chlorine, which is pivotal in its role as a disinfectant.
Sodium Dichloroisocyanurate (SDIC), a potent oxidative agent, attacks the cell walls of microorganisms, effectively neutralising bacteria, viruses, and fungi.
This characteristic is particularly beneficial in environments like aquaculture and swimming pools, where biological contamination can be a significant concern.
Sodium Dichloroisocyanurate (SDIC) is the sodium salt of a chlorinated hydroxytriazine and is used as a source of free available chlorine, in the form of hypochlorous acid, for the disinfection of water.
Sodium Dichloroisocyanurate (SDIC) is widely used as a stable source of chlorine for the disinfection of swimming pools and in the food industry.
It is also used as a means of disinfecting drinking-water, primarily in emergencies, when it provides an easy-to-use source of free chlorine, and, more recently, as the form of chlorine for household point-of-use water treatment.
Sodium Dichloroisocyanurate (SDIC) is a broad-spectrum disinfectant agent: More stable than bleach (sodium hypochlorite) - consistent strength produced at point of use for cleaning and disinfecting hard surfaces; Almost neutral in pH - less corrosive on surfaces than liquid bleach; Biodegradable – safe for the environment.
Sodium Dichloroisocyanurate (SDIC) is produced by chlorination of disodium cyanurate [Na2H(NCO)3] using chlorine (CI2) and neutralization with sodium hydroxide (NaOH).
Sodium Dichloroisocyanurate (SDIC) is obtained by action of sodium hydroxide on isocyanuric acid.
Sodium Dichloroisocyanurate (SDIC) widely applied for the sterilization of swimming pool and drinking water, or fighting against infectious diseases, or act as disinfectant in raising silkworm, livestock, poultry and fish.
Other applications of SDIC are found in wool shrinkage, textile bleaching, and industrial circulating water cleaning.
Sodium Dichloroisocyanurate (SDIC) is normally supplied in powder and granular, tablets are also available on request.
Stabilised chlorine granular (dichlor) are used very widely to chlorinate swimming pool water.
Melting point : 225 °C
Density : 1 g/cm³
Vapor pressure : 0.006 Pa at 20 °C
Storage temperature : 0–6 °C
Solubility : DMSO (slightly, heated), Methanol (slightly, heated, sonicated), Water
Form : Powder to lump
Color : White to almost white
Water solubility : 30 g/100 mL (25 °C)
Sensitive : Moisture sensitive
BRN : 4056155
Stability : Stable. Oxidizing agent – contact with combustible material may lead to fire. Incompatible with strong bases and strong oxidizing agents. Reacts readily with many nitrogen-containing compounds to form explosive nitrogen triiodide. Moisture-sensitive.
InChI : InChI=1S/C3HCl2N3O3.Na/c4-7-1(9)6-2(10)8(5)3(7)11;/h(H,6,9,10);/q;+1/p-1
InChIKey : MSFGZHUJTJBYFA-UHFFFAOYSA-M
SMILES : C1(=O)N(Cl)C(=NC(=O)N1Cl)[O-].[Na+]
Sodium Dichloroisocyanurate (SDIC), bleaching powder, dibasic tricalcium hypochlorite and sodium hypochlorite are several chlorine-containing disinfectants which are generally used in China.
The disinfection capability of chlorine-containing disinfectant is mainly determined by the content of the available chlorine it contained.
The higher the content of available chlorine is, the stronger the ability of disinfection is.
When dissolved in water, chlorine-containing disinfectants form hypochlorous which has sterilization effect.
Hypochlorous produced by bleaching power or dibasic tricalcium hypochlorite in the solution is associated with the PH of the solution.
The lower PH in the solution is, the more hypochlorous it will produce.
Due to a higher hydrolysis constant, the sterilization capability of sodium dichloroisocyanurate is stronger than most other chloramine disinfectants.
Compared with hypochlorite disinfectants, the sterilization capability of sodium dichloroisocyanurate is weaker in low concentration of solution; while in high concentration of the solution, the solution can keep weak acidity.
Therefore, the sterilization effect of sodium dichloroisocyanurate sometimes can be better than that of hypochlorite disinfectants.
Chlorine-containing disinfectants mentioned above have good broad-spectrum germicidal efficacy and killing effects on vegetative form of bacteria, virus, fungal spore and bacterial spore.
Sodium Dichloroisocyanurate (SDIC) is one of the chlorinated isocyanuric acid disinfectants. Congeneric products also include chloroisobromine acid, trichloroisocyanuric acid, dichlord isocyanurice acid, potassium dichloroisocyanurate and so on.
Sodium Dichloroisocyanurate (SDIC) and other chlorinated isocyanuric acid disinfectants have a wide bactericidal spectrum and strong sterilization effect on vegetative form of bacteria, virus, fungal spore and bacterial spore.
They also have strong killing effect on various bacterial(eg. escherichia coli, staphylococcus aureus ), virus(eg. hepatitis virus), bacterial spores(eg. spores of bacillus subtilis var niger) and fungus.
In the effective concentration of the solution, Sodium Dichloroisocyanurate (SDIC) can kill 99.9% escherichia in 30 minutes, all bacteria spores in five to thirty minutes and all hepatitis virus in five minutes.
Besides, this product also have the function to destroy surface antigen of type B hepatitis virus.
Sodium Dichloroisocyanurate (SDIC) has a better killing effect in the acidic conditions.
The lower PH is, the better effect it has.
Sodium Dichloroisocyanurate (SDIC) has a good stability of chemical property and exists no carcinogenic potential.
Sodium Dichloroisocyanurate (SDIC) can be used for disinfection in water, processing equipment in food factory, tableware, food, vehicles, animal buildings, magnanerie, fishpond and utensil and so on.
Sodium Dichloroisocyanurate (SDIC) also serves as a water treatment agent, particularly in swimming pools, drinking water systems, and industrial water processes, where it controls microbial contamination, prevents biofilm formation, and maintains hygienic conditions.
In addition, it can be used in food processing, beverage production, and pharmaceutical facilities to sanitize equipment and surfaces, owing to its potent antimicrobial properties and broad-spectrum effectiveness.
Its chemical stability and controlled chlorine release make SDIC safer and more convenient than some other chlorine-releasing compounds, although it is still classified as a strong oxidizer, which necessitates careful handling, storage, and use to avoid chemical reactions with reducing agents, organic materials, or combustible substances.
Sodium Dichloroisocyanurate (SDIC) is shortly name SDIC is a kind of effervescent chlorine tablet, which can be applied for many different areas of sanitization and disinfections for household, industrial field and animal farm.
Adding function for more stability than the other chlorine tablet, easier to prepare a required concentration and its self-stirring benefit strengthens the solubility.
Unfortunately, liquid bleach has a number of inherent disadvantages: poor stability, highly corrosive, variable strengths etc.
Sodium Dichloroisocyanurate (SDIC) is white crystalline powder and has a strong smell of chlorine gas, containing available chlorine 60% to 64.5%.
Sodium Dichloroisocyanurate (SDIC) has a stable property, and when stored in high temperature and humid areas, the reduction of available chlorine is only about 1%.
It is easily dissolved in water and the solubility is 25%(25℃).
The solution is weak acid and PH in 1% of the aqueous solution is 5.8 to 6.0. PH has little change while the concentration of the solution increased.
When dissolved in water, sodium dichloroisocyanurate will generate hypochlorous, of which the hydrolysis constant is 1×10-4 higher than that of chloramines-T.
The stability of the aqueous solution is poor. Under the ultraviolet light, the loss of the active chlorine would be accelerated.
Sodium Dichloroisocyanurate (SDIC) solution with low concentration can quickly kill all kinds of vegetative forms of bacteria, fungi and virus ,especially for hepatitis virus.
The solution has several characteristics such as with high chlorine content, strong sterilization effect, simple process and low-cost.
In addition, sodium dichloroisocyanurate is of low toxicity, and its sterilization effect is better than that of bleaching powder and chloramines-T.
Mixing metal reducing agents or acid synergist with potassium permanganate and sodium dichloroisocyanurate powder can produce chlorine smoke fumigant or acid chloride smoke fumigant.
Once lighted, such smoke fumigant will give off gas with strong sterilization effect.
Uses Of Sodium Dichloroisocyanurate (SDIC):
Sodium Dichloroisocyanurate (SDIC) is mainly used as a disinfectant, biocide and industrial deodorant.
It is found in some modern water purification tablets/filters.
Sodium Dichloroisocyanurate (SDIC) is more efficient than the formerly used halazone water disinfectant.
In these applications, it is a slow-release source of chlorine in low concentrations at a relatively constant rate.
As a disinfectant, it is used to sterilize drinking water, swimming pools, tableware and air, and to fight against infectious diseases as a routine disinfection agent.
Sodium Dichloroisocyanurate (SDIC) can be used for disinfection and environmental sterilization, for example in livestock, poultry, fish and silkworm raising, for bleaching textiles, for cleaning industrial circulating water, and to prevent wool from shrinking.
The reaction between NaDCC and a dilute solution of copper (II) sulfate produces an intense lilac precipitate of the complex salt sodium copper dichloroisocyanurate.
The reactions between dichloroisocyanurate salts (Na, K, Li, Ba, Ca) and transition metal salts (Ni, Cu, Cd) are described in patent US 3,055,889.
The overall reaction is: CuSO4 + 4 Na(C3N3O3Cl2) → Na2[Cu(C3N3O3Cl2)4] + Na2SO4
Sodium Dichloroisocyanurate (SDIC) reacts with concentrated (130 vol, 35%) hydrogen peroxide to create singlet oxygen which emits red light upon decomposition.
Sodium Dichloroisocyanurate (SDIC) is considered hazardous according to OSHA 29 CFR 1910.1200.
High-level exposure can cause reactive airways dysfunction syndrome (R.A.D.S.).
Sodium Dichloroisocyanurate (SDIC) can be used for drinking water disinfection and tableware disinfection,
Sodium Dichloroisocyanurate (SDIC) can also be used to disinfect the appearance of fruits and poultry eggs to prolong the preservation period,
Sodium Dichloroisocyanurate (SDIC) is widely used in large-scale disinfection for flood relief and preventive disinfection in areas with epidemic infectious diseases,
Sodium Dichloroisocyanurate (SDIC) can be used in the form of fumigation, water and powder for sericulture farms and sericulturists to disinfect sericulture rooms, sericulture tools and sericulture bodies,
Sodium Dichloroisocyanurate (SDIC) can effectively prevent and control fish diseases caused by bacteria, fungi and algae, and also has obvious effect on fish viral diseases,
Using 2-3% Euchlorine aqueous solution and adding other additives to the wool or wool blended fibers and fabrics soaking treatment, can make wool and its products do not pill and do not felt shrinkage, to achieve the International Wool Board issued by the super washable standard.
Sodium Dichloroisocyanurate (SDIC), the sodium salt of a chlorinated hydroxytriazine, is used as a source of free available chlorine (in the form of hypochlorous acid, HOCl) for disinfecting drinking water.
Sodium Dichloroisocyanurate (SDIC) can be manufactured either as the anhydrous salt or as the dihydrate.
Anhydrous sodium dichloroisocyanurate contains about 63% free available chlorine.
When Sodium Dichloroisocyanurate (SDIC) is added to water, it is rapidly hydrolyzed to release free available chlorine, establishing a complex series of equilibria involving six chlorinated and four non-chlorinated isocyanurates.
As free available chlorine is consumed on reacting with organic material in the water, chloroisocyanurates rapidly dissociate and continue to release free chlorine.
The use of Sodium Dichloroisocyanurate (SDIC) as a source of freely available chlorine is not expected to lead to greater production of by-products than does the use of elemental chlorine.
Sodium Dichloroisocyanurate (SDIC) can be used as a reagent for N-monochlorination and dehydrochlorination of amino esters.
It is also a reagent for chlorination to detect ammonium via formation of colored zebra-bands in a detecting tube.
Sodium Dichloroisocyanurate (SDIC) is primarily used as a powerful disinfectant and sanitizer across multiple sectors, due to its ability to release active chlorine gradually, which effectively destroys bacteria, viruses, fungi, and other microorganisms, ensuring the maintenance of hygienic conditions in a wide variety of environments.
In water treatment, SDIC is extensively applied to sanitize swimming pools, hot tubs, drinking water supplies, and industrial cooling systems, where it prevents the growth of algae, biofilms, and pathogenic microorganisms, maintaining both the safety and clarity of the water while reducing the need for frequent manual cleaning or additional chemical additives.
In the food and beverage industry, Sodium Dichloroisocyanurate (SDIC) is used to disinfect equipment, utensils, storage tanks, and surfaces that come into contact with food or drink, helping to prevent contamination and spoilage while maintaining regulatory standards for hygiene and food safety.
Its controlled chlorine release ensures that disinfection is effective over extended periods, minimizing the risk of microbial regrowth and cross-contamination in production and packaging areas.
Sodium Dichloroisocyanurate (SDIC) is also employed in pharmaceutical and healthcare settings, where it is used to sanitize medical instruments, laboratory equipment, and hospital surfaces, contributing to infection control and reducing the risk of healthcare-associated infections.
Its strong oxidizing properties allow it to inactivate viruses and bacteria on hard surfaces, making it an essential tool in environments where sterility and hygiene are critical.
Beyond sanitation, Sodium Dichloroisocyanurate (SDIC) finds applications in bleaching and deodorizing, where it is used to remove stains, neutralize odors, and disinfect surfaces simultaneously, providing both aesthetic and hygienic benefits in industrial, institutional, and domestic contexts.
In agriculture and animal husbandry, SDIC can be used to disinfect water systems, animal housing, and processing equipment, preventing the spread of pathogens among livestock and ensuring safer conditions for both animals and humans.
Furthermore, Sodium Dichloroisocyanurate (SDIC) is valued in emergency and disaster response scenarios, where rapid and reliable disinfection of contaminated water or surfaces is required to prevent the outbreak of waterborne diseases.
Its solid, stable form makes it easy to transport and store, allowing for efficient deployment in remote or resource-limited settings where liquid chlorine or other disinfectants may be impractical.
In summary, the uses of Sodium Dichloroisocyanurate (SDIC) span water treatment, swimming pool sanitation, food and beverage hygiene, pharmaceutical and healthcare disinfection, surface bleaching and deodorizing, agricultural sanitation, and emergency water disinfection, all of which leverage its controlled chlorine release, broad-spectrum antimicrobial activity, stability in solid form, and versatility across multiple industries to maintain safety, hygiene, and public health standards.
Sodium Dichloroisocyanurate (SDIC) widely applied for the sterilization of swimming pool and drinking water, or fighting against infectious diseases, or act as disinfectant in raising silkworm, livestock, poultry and fish. Other applications of SDIC are found in wool shrinkage, textile bleaching, and industrial circulating water cleaning.
Sodium Dichloroisocyanurate (SDIC) is normally supplied in powder and granular, tablets are also available on request. Stabilised chlorine granular (dichlor) are used very widely to chlorinate swimming pool water.
Safety Profile Of Sodium Dichloroisocyanurate (SDIC):
Moderately toxic to humans and animals by ingestion.
An experimental teratogen experimental reproductive effects.
A severe skin and eye irritant.
Human systemic effects by ingestion: ulceration or bleeding from stomach.
The other main toxic effects were gastrointestinal irritation, salivation, lachrymation, dyspnea, weakness, emaciation, lethargy, diarrhea, coma, and (following very high dosage) death after 1-8 days, with autopsy showing irritation of stomach and gastrointestinal tract, liver dysfunction, and lung congestion.
The concentrated material may be a little more toxic, due to greater gastrointestinal irritation.
In the dry form, it is not appreciably irritating to dry skin.
However, when moist, the concentrated material is irritating to skin, and also may cause severe eye irritation.
A powerful oxidizer. Incompatible with combustible materials, ammonium salts, nitrogenous materials.
Used to chlorinate swimming pools and in cleaning, bleaching, disinfecting, sanitizing.
When heated to decomposition it emits very toxic fumes of Cl-, NOx, and Na2O.
Sodium Dichloroisocyanurate (SDIC) is a strong oxidizing agent that, while highly effective as a disinfectant and sanitizer, poses several chemical and health hazards if not handled properly, requiring careful storage, handling, and use to prevent accidents or exposure.
Inhalation of dust or fine particles can cause respiratory irritation, including coughing, sneezing, sore throat, or shortness of breath, and prolonged exposure in poorly ventilated areas may exacerbate pre-existing respiratory conditions such as asthma or bronchitis.
Direct contact with the eyes can result in severe irritation, redness, or even corneal damage, while prolonged or repeated skin contact may cause mild to moderate irritation, dryness, or dermatitis, particularly in sensitive individuals.
Accidental ingestion of SDIC can lead to gastrointestinal distress, including nausea, vomiting, abdominal pain, or diarrhea, and in larger quantities, the released chlorine may react with stomach acids to form corrosive or irritating compounds, posing more serious health risks.
Because Sodium Dichloroisocyanurate (SDIC) is a strong oxidizer, it can react vigorously with reducing agents, organic matter, flammable materials, or strong acids, potentially causing fires, explosions, or the release of toxic chlorine gas, which is hazardous to respiratory health and can be life-threatening in high concentrations.
