Trichloroisocyanuric acid
Description
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.
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 (Learn More)
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 |
Documentation
Other Names
trichloroiminocyanuric acid|trichlorocyanuric acid|1,3,5-trichloro-1,3,5-triazine-2,4,6(1H,3H,5H)-trione|TCCA|Symclosen|Chloreal|Trichloro-s-triazinetrione|Fi Clor 91
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