Baby Safety / Compounds / Sodium dichloroisocyanurate

Is Sodium dichloroisocyanurate safe for babies and kids?

Moderate risk for kids

Infants are more vulnerable to Sodium dichloroisocyanurate than children or adults due to immature hepatic/renal clearance, higher intake-to-body-weight ratio, rapid organ development, and increased gastrointestinal absorption.

What is sodium dichloroisocyanurate?

The IUPAC name is sodium 1,5-dichloro-4,6-dioxo-1,3,5-triazin-2-olate.

Also known as: sodium 1,5-dichloro-4,6-dioxo-1,3,5-triazin-2-olate, Dikonit, Simpla, Troclosene sodium.

IUPAC name: sodium 1,5-dichloro-4,6-dioxo-1,3,5-triazin-2-olate
CAS number: 2893-78-9
Molecular formula: C3Cl2N3NaO3
Molecular weight: 219.94 g/mol
SMILES: C1(=NC(=O)N(C(=O)N1Cl)Cl)[O-].[Na+]
PubChem CID: 517202

Risk for babies

Moderate risk

Neonates and infants up to 12 months have incomplete blood-brain barrier development, immature Phase I/II metabolic enzymes (particularly CYP3A4, UGT1A1), and higher gastrointestinal permeability. Equivalent doses produce higher internal concentrations and longer residence times.

What to do: Minimize infant exposure through source control. For breastfeeding mothers: reduce maternal exposure. For formula-fed infants: use certified low-migration bottles and verified water sources. Consult pediatrician regarding any concerns.

Risk for pregnant and nursing people

Context-dependent

Pregnancy alters the metabolism and distribution of Sodium dichloroisocyanurate, potentially increasing fetal exposure. The developing embryo/fetus is vulnerable during organogenesis (weeks 3-8) and neurological development. Placental transfer should be assumed.

No specific reproductive toxicity data identified, but pregnancy-specific safety data is limited for most chemicals. Precautionary minimization of exposure is recommended.

What to do: Minimize exposure during pregnancy and lactation. Consult healthcare provider regarding specific risks. Consider alternative products with lower hazard profiles.

Regulatory consensus

6 regulatory and scientific bodies have classified Sodium dichloroisocyanurate. The classifications differ — that's the data.

Agency	Year	Classification
WHO	2019	no carcinogenicity classification; WHO prequalified water purification agent for emergency and household use; safety governed by hypochlorous acid and cyanuric acid hydrolysis products; no separate carcinogenicity data
EPA CTX / Genetox	—	Genotoxicity: negative (Ames: negative, 0 positive / 6 negative reports)
EPA CTX / Genetox	—	Genotoxicity: negative (Ames: negative, 0 positive / 6 negative reports)
WHO	—	Essential Medicine — on WHO Model List of Essential Medicines for water purification
EPA	—	Registered antimicrobial pesticide under FIFRA
NSF	—	NSF/ANSI 60 certified for drinking water treatment

Regulators apply different standards of evidence — animal-data weighting, exposure-pattern assumptions, epidemiological power thresholds — which is why two scientific bodies can review the same data and reach different conclusions. The disagreement is the data.

Where kids encounter sodium dichloroisocyanurate

Industrial Facilities — Manufacturing plants, Chemical storage areas, Waste treatment sites
Occupational Environments — Factories, Warehouses, Transportation vehicles
Swimming Pools And Spas — Granular pool shock treatment, Spa/hot tub sanitizer (preferred over TCCA for spas)
Emergency Water Treatment — Aquatabs (WHO-approved), Military water purification, Disaster relief water treatment
Hospital Disinfection — Surface disinfection in healthcare settings, Blood spill cleanup tablets
Food Processing — Produce wash, Dairy and beverage equipment sanitation

Safer alternatives

Lower-risk approaches that achieve a similar outcome to Sodium dichloroisocyanurate:

Physical/mechanical pest control (IPM)
Trade-offs: More labor-intensive. May not be sufficient for severe infestations.

Relative cost: 1.2-2×
Sodium hypochlorite (bleach)
Trade-offs: Alternative approach; specific tradeoffs depend on application context, scale, and regulatory requirements. Full hazard assessment of alternative recommended before adoption to avoid regrettable substitution.

Relative cost: 1.2-2×
Calcium hypochlorite (cal-hypo)
Trade-offs: Alternative approach; specific tradeoffs depend on application context, scale, and regulatory requirements. Full hazard assessment of alternative recommended before adoption to avoid regrettable substitution.

Relative cost: 1.2-2×

Frequently asked questions

Is sodium dichloroisocyanurate safe for kids?

What products contain sodium dichloroisocyanurate?

Sodium dichloroisocyanurate appears in: Manufacturing plants (Industrial facilities); Chemical storage areas (Industrial facilities); Factories (Occupational environments); Warehouses (Occupational environments); Granular pool shock treatment (Swimming pools and spas).

What should I do if my child is exposed to sodium dichloroisocyanurate?

Minimize infant exposure through source control. For breastfeeding mothers: reduce maternal exposure. For formula-fed infants: use certified low-migration bottles and verified water sources. Consult pediatrician regarding any concerns.

Why do regulators disagree about sodium dichloroisocyanurate?

Sodium dichloroisocyanurate has been classified by 6 agencies including WHO, EPA CTX / Genetox, EPA CTX / Genetox, WHO, EPA, with differing conclusions. Regulators apply different standards of evidence (animal data weighting, exposure-pattern assumptions, epidemiological power thresholds), which is why two scientific bodies can review the same data and reach different conclusions. See the regulatory consensus table on this page for the full picture.

See Sodium dichloroisocyanurate in the baby app

Look up products containing sodium dichloroisocyanurate, compare to alternatives, and explore the full data record.

Open in baby View raw API data

Sources (2)

WHO NaDCC Prequalification: Emergency Water Treatment 1.67–3.33 mg/L Free Chlorine; Aquatabs WHO List; Household Water Treatment HWTS; Humanitarian Emergency Safe Water (2019) — regulatory
WHO UNICEF NaDCC Water Purification Tablets: 56% Available Chlorine; Rapid Dissolution; Contact Time 30 min; Low-Resource Settings; Disinfection Byproduct Profile (2016) — regulatory

Reference data, not professional advice. Aggregates publicly available regulatory and scientific data; not a substitute for veterinary, medical, legal, or regulatory advice. Why we built ALETHEIA →