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  • Cyanuric Acid CAS 108-80-5

Cyanuric Acid CAS 108-80-5

Cyanuric Acid, also called isocyanuric acid, CAS 108-80-5, is a white crystalline triazine compound supplied as a chlorine stabilizer and isocyanurate intermediate. Confirm the required grade and specification, then request a quotation with COA/TDS/SDS for bulk supply.

  • CAS: 108-80-5
  • Synonyms: Isocyanuric acid, 1,3,5-Triazine-2,4,6(1H,3H,5H)-trione, s-Triazinetrione, Tricarbimide, 1,3,5-Triazine-2,4,6-triol
  • Einecs: 203-618-0
  • Molecular Formula: C₃H₃N₃O₃
  • Grade: Industrial Grade
  • Package: 25 kg bag (standard); 1000 kg big bag optional (customizable)
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Product Description

Cyanuric Acid, also called isocyanuric acid or 1,3,5-triazine-2,4,6-trione, CAS 108-80-5, is a white crystalline triazine compound with the molecular formula C3H3N3O3.

Synonyms: Isocyanuric acid; 1,3,5-Triazine-2,4,6(1H,3H,5H)-trione; s-Triazinetrione; Tricarbimide; 1,3,5-Triazine-2,4,6-triol.

CAS: 108-80-5.

It has the molecular formula C3H3N3O3 and a molecular weight of 129.07 g/mol.

It appears as a white crystalline powder.

It has a melting/decomposition range of about 320–360 °C and a density of about 1.7–1.8 g/cm³.

It has low water solubility, reported around 0.27–0.3 g/100 mL at 25 °C, and is odorless.

It forms a weak association with free chlorine, protecting it from rapid destruction by sunlight.

This slows UV degradation and maintains more stable free-chlorine levels in outdoor pools and spas.

It is a key precursor for chlorinated isocyanurates such as trichloroisocyanuric acid and sodium or potassium dichloroisocyanurate.

Those derivatives are used as disinfectants and sanitizers in water treatment.

It is also used in industrial formulations where triazine-based intermediates are required.

It has good thermal stability and very low volatility.

Industrial grade is normally a white crystalline powder with purity and residue limits defined by the supplier COA.

Confirm appearance, purity, moisture, residue and particle size limits.

Store in a cool, dry, well-ventilated warehouse; keep containers tightly sealed and away from moisture and strong oxidizers.

Confirm packaging with the requested quantity and destination requirements.

The page is an RFQ entry point and does not state stock, price, MOQ or fixed lead time.

For an RFQ, state the intended use, required grade and specification, quantity, packaging, destination and document needs.

FAQ - Technical & Supply Chain

  • Q:

    What is Cyanuric Acid CAS 108-80-5?

    A: Cyanuric Acid, also called isocyanuric acid or 1,3,5-triazine-2,4,6-trione, CAS 108-80-5, is a white crystalline triazine compound with the molecular formula C3H3N3O3. It is mainly used as a chlorine stabilizer and as an intermediate for chlorinated isocyanurates.
  • Q:

    How does Cyanuric Acid stabilize chlorine in pool water?

    A: Cyanuric acid forms a weak association with free chlorine, protecting it from rapid destruction by sunlight. This slows UV degradation and helps maintain more stable free-chlorine levels in outdoor swimming pools and spas.
  • Q:

    Is Cyanuric Acid the same as isocyanuric acid?

    A: For industrial use, cyanuric acid and isocyanuric acid are treated as the same triazine compound and share CAS 108-80-5. The names emphasize different tautomeric or structural representations, but commercial material is the same 1,3,5-triazine-based substance.
  • Q:

    What chlorinated products are made from Cyanuric Acid?

    A: Cyanuric Acid is a key precursor for chlorinated isocyanurates such as trichloroisocyanuric acid and sodium or potassium dichloroisocyanurate. These derivatives are used as disinfectants and sanitizers in water treatment and related applications.
  • Q:

    What are typical specifications for industrial Cyanuric Acid?

    A: Industrial Cyanuric Acid is normally a white crystalline powder with molecular weight about 129.07, melting/decomposition in the range of about 320-360 C, and low water solubility around 0.27-0.3 g/100 mL at 25 C. Purity, moisture, residue and particle size limits vary by grade and are defined by the supplier COA.

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