Overview
Trichloroisocyanuric acid ( CAS 87-90-1 ), commonly known as TCCA, is a chlorine-based oxidizing agent and biocide used across water treatment, sanitation, and industrial processing.
It delivers controlled, sustained chlorine release, making it a preferred active ingredient where consistent disinfection or bleaching performance is required for various applications.
In water treatment, TCCA is the active compound in swimming pool and potable water disinfection tablets, where its slow-dissolving profile maintains residual chlorine levels over time.
Textile and paper processors use it as a bleaching agent to whiten fibers and pulp without the handling risks associated with liquid chlorine or other volatile chemicals.
Food processing facilities apply TCCA-based solutions for equipment and surface sanitation, meeting hygiene standards where chlorine-releasing disinfectants are approved for use.
In personal care manufacturing, it functions as a preservative and antimicrobial active in certain industrial cleaning formulations targeting microbial contamination and growth.
TCCA is supplied as white tablets, granules, and powder, with tablet size varying by application from small pool tabs to larger industrial formats for heavy-duty use.
Standard commercial concentrations are typically 90% available chlorine content. Technical and industrial grades are the primary market forms available for global distribution.
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Physical Properties
| Melting Point | 47-246 °C (decomp) |
| Boiling Point | 272.3±23.0 °C(Predicted) |
| Density | 2.07 |
| Flash Point | 121°C |
| Appearance | white to light yellow crystal powde |
| Color | White to almost white |
| Odor | chlorine odor |
| Form | Powder or Granules |
| Water Solubility | 1.2 g/100mL (25 ºC) |
| Vapor Pressure | 0.001-0.002Pa at 20-25℃ |
| pH | 2.0-2.7 (10g/l, H2O, 20℃) |
| Log P | -1.31-0.94 at 25℃ |
Safety & Handling
Danger GHS03 GHS07 GHS09 GHS05 Hazard Statements H272 May intensify fire; oxidizer H302 Harmful if swallowed H314 Causes severe skin burns and eye damage H315 Causes skin irritation H318 Causes serious eye damage H319 Causes serious eye irritation H332 Harmful if inhaled H335 May cause respiratory irritation H400 Very toxic to aquatic life H410 Very toxic to aquatic life with long lasting effects Precautionary Statements P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. P220 Keep away from clothing and other combustible materials. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P271 Use only outdoors or in a well-ventilated area. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P316 Get emergency medical help immediately. P317 Get emergency medical help. P319 Get medical advice/attention if you feel unwell. P321 Specific treatment (see … on this label). P330 Rinse mouth. P363 Wash contaminated clothing before reuse. P391 Collect spillage. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P301+P317 Get emergency medical help. P302+P352 IF ON SKIN: Wash with plenty of water. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P332+P317 Get emergency medical help. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P362+P364 Take off contaminated clothing and wash it before reuse. P370+P378 Use … for extinction. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P301+P330+P331 Rinse mouth. Do NOT induce vomiting. P302+P361+P354 IF ON SKIN: Take off immediately all contaminated clothing. Rinse skin with water/shower. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P305+P354+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Trade & Regulatory
| HS Code | 29336980 |
| UN Number | 2468 |
| ADR Class | 5.1 |
| Packing Group | II |
| Storage Class | 5.1B - Oxidizing hazardous materials |
| WGK (Germany) | 2 |
Other Names
Related Products
Chemical Properties
- CAS Number
- 87-90-1
- EC Number
- 201-782-8
- Mol. Weight
- 232.41
- HS Code
- 29336980
- Category
- Chelating Agents