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Salts & Minerals

Sodium trithiocyanurate

CAS: 17766-26-6

Overview

Sodium trithiocyanurate (CAS 17766-26-6 ), commercially known as TMT, is the trisodium salt of trithiocyanuric acid used to precipitate and immobilize heavy metal ions in industrial processes.

It reacts selectively with dissolved metals to form stable, insoluble complexes that can be separated from liquid streams. In industrial wastewater treatment, TMT precipitates heavy metals such as mercury and lead.

It also targets cadmium and copper from effluent streams, enabling compliance with discharge limits. Mining and mineral processing operations use it to remove residual metal contaminants from process water.

It is frequently applied to tailings pond runoff and electroplating wastewater where conventional hydroxide precipitation alone fails to meet regulatory thresholds. This ensures safer environmental discharge.

Metal smelting and refining facilities use TMT as a polishing agent in final effluent treatment. This process captures trace dissolved metals that resist other common treatment methods effectively.

Sodium trithiocyanurate is supplied as an aqueous solution, most commonly at 15% concentration. This is the standard commercial form for dosing systems in large scale industrial facilities.

Dry powder form is available for applications requiring concentrated stock preparation or extended shelf storage. Technical grade is the primary specification offered for these industrial uses.

Product quality is typically characterized by active content and heavy metal precipitation efficacy. This ensures the chemical meets the necessary performance standards for heavy metal remediation.

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Physical Properties

Melting Point82-84 °C(lit.)
Density1.583[at 20℃]
Colorlight yellow
FormLiquid
Water Solubility346.15g/L at 22℃
Vapor Pressure0Pa at 25℃
Log P0.01 at 25℃

Safety & Handling

Danger GHS05 GHS07 Hazard Statements H302 Harmful if swallowed H314 Causes severe skin burns and eye damage H318 Causes serious eye damage H319 Causes serious eye irritation Precautionary Statements P260 Do not breathe dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P280 Wear protective gloves/protective clothing/eye protection/face protection. P316 Get emergency medical help immediately. P317 Get emergency medical help. P321 Specific treatment (see … on this label). P330 Rinse mouth. P363 Wash contaminated clothing before reuse. 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. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. 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 Code29336990
UN Number3267
ADR Class8
Packing GroupI
Storage Class11 - Combustible Solids
WGK (Germany)2

Other Names

trisodium 135-triazine-246-trithiolate | EW8XOU36QW | Trithiocyanuric acid trisodium salt | 135-Triazine-246(1H3H5H)-trithionetrisodium salt | Trimercapto-s-triazine trisodium salt | TMT 18 | 135-Triazine-246(1H3H5H)-trithionesodium salt (1:3) | s-Triazine-246-trithioltrisodium salt | TMT

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Chemical Properties

CAS Number
17766-26-6
EC Number
241-749-5
Mol. Weight
243.2
HS Code
29336990

Industries

Documentation