Agent Name

Cyanuric acid

CAS Number

108-80-5

Formula

C3-H3-N3-O3

Major Category

Nitrogen Compounds

Synonyms

1,3,5-Triazine-2,4,6(1H,3H,5H)-trione; 2,4,6-Trihydroxy-1,3,5-triazine; CP 4789; Cyanuric acid (VAN); Isocyanurate acid; Isocyanuric acid; Kyselina kyanurova [Czech]; Pseudocyanuric acid; Tricyanic acid; Trihydroxycyanidine; Trihydroxytriazine; s-2,4,6-Triazinetriol; s-Cyanuric acid; s-Triazine-2,4,6(1H,3H,5H)-trione; s-Triazinetriol; sym-Triazinetriol; [ChemIDplus]

Category

Triazines

Description

White, odorless solid; [Hawley] Hygroscopic; [CHEMINFO] Off-white powder; [MSDSonline]

Sources/Uses

Used in labs as a source of cyanic acid gas and in swimming pools as a disinfectant; Also used to make melamine, sponge rubber, herbicides, dyes, resins, scouring powders, household bleaches, institutional and industrial cleansers, automatic dishwasher compounds, general sanitizers, and antimicrobial agents; [HSDB]

Comments

An eye and respiratory tract irritant; [HSDB] A mild eye irritant; Ingestion of large quantity may cause kidney injury; [ICSC] An irritant; [MSDSonline] Classified as essentially nontoxic; Avoid ingestion, inhalation of dust, and contact with eyes; [Ullmann] Causes crystals that can damage urinary tract in animals fed high doses; [AIHA]

Exposure Assessment
WEEL

10 mg/m3, (total dust), 5 mg/m3 (respirable fraction)

Vapor Pressure

3.05E-8 mm Hg

Lethal Concentration

LC50 (rat) > 612 mg/m3

Half Life

90% excreted within 12 hours, and of this 99% is excreted unchanged as cyanuric acid; [HSDB]

Links to Other NLM Databases
Health Studies

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Toxicity Information

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Processes

Industrial Processes with risk of exposure: