1,3,5-Trichloroisocyanuric acid
CAS 87-90-1
EC 201-782-8
Formula C3Cl3N3O3
MW 232.41 g/mol
Oxidizers & Peroxides Water TreatmentFood & NutritionPersonal Care & CosmeticsTextile, Leather & Paper Bleaching & WhiteningPreservation & BiocideCleaning & DegreasingpH Regulation & Buffering
Description
1,3,5-Trichloroisocyanuric acid (CAS 87-90-1), also known commercially as ACL 85, symclosene, and CDB 90, is a chlorine-releasing oxidizing agent belonging to the isocyanurate family. It carries no assigned E-code and is registered under EC 201-782-8. It is classified under HS code 29336980 for customs and trade purposes.
In water treatment, it releases active chlorine upon dissolution, achieving disinfection and algae control at measurable concentrations without the handling risks of liquid chlorine. In textile and paper processing, it functions as a bleaching agent by oxidizing chromophoric bonds in natural fibers and pulp. Personal care formulators use it as a preservation and antimicrobial active in solid sanitizing products.
This material is supplied in powder and granular forms, with grades available to meet industrial and food-contact specifications including FCC compliance where applicable. It falls under REACH regulation and requires an up-to-date Safety Data Sheet for EU trade. Packaging formats are available in drums and bulk bags depending on volume requirements.
In water treatment, it releases active chlorine upon dissolution, achieving disinfection and algae control at measurable concentrations without the handling risks of liquid chlorine. In textile and paper processing, it functions as a bleaching agent by oxidizing chromophoric bonds in natural fibers and pulp. Personal care formulators use it as a preservation and antimicrobial active in solid sanitizing products.
This material is supplied in powder and granular forms, with grades available to meet industrial and food-contact specifications including FCC compliance where applicable. It falls under REACH regulation and requires an up-to-date Safety Data Sheet for EU trade. Packaging formats are available in drums and bulk bags depending on volume requirements.
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)
Danger GHS03 GHS07 GHS09 GHS05
H
H272H302H314H315H318H319H332H335H400H410
P
P210P220P260P261P264P270P271P273P280P316P317P319P321P330P363P391P405P501P264+P265P301+P317P302+P352P304+P340P332+P317P337+P317P362+P364P370+P378P403+P233P301+P330+P331P302+P361+P354P305+P351+P338P305+P354+P338
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
Trichloroisocyanuric acid1,3,5-trichloro-1,3,5-triazinane-2,4,6-trioneTCCAsymcloseneBLEACHACL 85CDB 90
Related Products
Raw Materials
Need a chemical? Get a quote within 24 hours.