Acids & Salts Available — Bulk Only

Trichloroisocyanuric Acid (TCCA)

CAS 87-90-1 · Formula C3Cl3N3O3 · MW 232.41 g/mol

A high-available-chlorine isocyanurate for water sanitation, bleaching, and chlorination chemistry. It is used as a chlorinating and oxidizing agent and as a sanitizer in swimming-pool and water treatment, industrial cleaners, bleaches, and scouring powders.

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UN Number
UN 2468
Hazard Class
Class 5.1
HS Code
2933.69
At a Glance
Material Family
Acids & Salts
Record Type
Pure compound
Primary Role
pH Adjustment · Biocidal Action
Solubility
Soluble in chlorinated and highly polar solvents
Functional Roles
Industries Served
Applications & Use Cases
  • Water treatment: Chlorinating sanitizer for swimming pools and water systems
  • Cleaning products: Active in bleaches, scouring powders, and dishwashing compounds
  • Industrial: Stainless-steel cleaning and wool non-shrink treatment
  • Organic synthesis: Oxidant and chlorinating reagent
Physical Properties
Melting Point
246.7 °C (decomposes)
Density
> 1 at 20 °C (est)
Solubility
Soluble in chlorinated and highly polar solvents
Vapor Pressure
0.00000012
Flash Point
> 250 °C (250 °C ) open cup
pH
pH = 4.4
Safety & Handling
Full SDS available on request

A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.

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DOT / UN Transport Classification
DOT hazard class 5.1 placard
UN / DOT NumberUN 2468
Hazard Class / DivisionClass 5.1
Packing GroupII
Proper Shipping NameTrichloroisocyanuric acid, dry

Transport classification per the UN Model Regulations / 49 CFR 172.101 Hazardous Materials Table. Confirm against the grade-specific SDS (Section 14) before shipping.

HS / Tariff Classification
Harmonized System (HS) Code — 6-digit international heading
2933 . 69
Chapter 29
Organic chemicals
Heading 29.33
Internationally harmonized (WCO HS)
Subheading 2933.69
6-digit international code — national tariff line adds further digits
Chemical Identity
CAS Number
87-90-1
Molecular Formula
C3Cl3N3O3
Molecular Weight
232.41 g/mol
IUPAC Name
1,3,5-trichloro-1,3,5-triazinane-2,4,6-trione
PubChem CID
InChI Key
YRIZYWQGELRKNT-UHFFFAOYSA-N
Synonyms & Trade Names
TRICHLOROISOCYANURIC ACID Symclosene Trichlorocyanuric acid Symclosen Chloreal Trichloro-s-triazinetrione Fi Clor 91 Fichlor 91 Isocyanuric chloride Trichloroisocyanic acid Neochlor 90 1,3,5-Trichloroisocyanuric acid ACL 85 Sincloseno Trichloroiminocyanuric acid Symclosenum Kyselina trichloisokyanurova Trichlorisocyanursaeure
Full Description

Trichloroisocyanuric acid (CAS 87-90-1, C3Cl3N3O3) is a chlorinated isocyanurate that releases available chlorine. It is used as a chlorinating and oxidizing agent and as a sanitizer in swimming-pool and water treatment, industrial cleaners, bleaches, and scouring powders.

Frequently Asked Questions

What is trichloroisocyanuric acid used for?

TCCA (CAS 87-90-1, C3Cl3N3O3) is a chlorinated isocyanurate that releases available chlorine. It is used as a chlorinating sanitizer in swimming-pool and water treatment, as the active in bleaches, scouring powders, and dishwashing compounds, for stainless-steel cleaning and wool non-shrink treatment, and as an oxidant and chlorinating reagent in organic synthesis.

Is trichloroisocyanuric acid the same as chlorine?

No. TCCA is a solid chlorinated isocyanurate, not elemental chlorine gas (Cl2). It functions as a chlorine carrier, releasing available chlorine in water; the two are different chemical forms with different handling and packaging.

How does trichloroisocyanuric acid react with water?

TCCA hydrolyzes in water to release available (active) chlorine along with cyanuric acid. This controlled release is the basis for its use as a chlorinating and oxidizing agent in water treatment and cleaning formulations.

What is the HS code and formula for trichloroisocyanuric acid?

TCCA has molecular formula C3Cl3N3O3 and CAS 87-90-1. It is classified under HS code 2933.69 (heterocyclic compounds containing an unfused triazine ring).

How is bulk TCCA packaged and shipped?

RawSource supplies TCCA in industrial bulk quantities (granules and tablet forms are common trade presentations). It ships under UN 2468 (trichloro-s-triazinetrione, dry). SDS and CoA accompany each order; contact us for a bulk quote, available forms, and shipping documentation.

Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.