Sodium Tolyltriazole 50%
The methyl-substituted salt, ready to meter. A 50 percent aqueous solution for hot systems and chlorinated water on liquid feed.
The methyl-substituted salt, ready to meter. A 50 percent aqueous solution for hot systems and chlorinated water on liquid feed.
Sodium tolyltriazole 50 percent is the methyl-substituted azole supplied already in water. It is the sodium salt of tolyltriazole, a clear pale yellow to amber solution released at 49.5 to 51.0 percent, and it is what a plant buys when it wants tolyltriazole performance out of a liquid feed.
The reason to be on tolyltriazole rather than benzotriazole does not change with the form. The methyl group on the ring is what lets the inhibitor hold up against chlorine and other oxidizing biocides and stay effective at higher operating temperatures. PAT's safety data sheet names the recommended use directly: a corrosion inhibitor in water treatment programs, protecting copper piping, and used in aircraft deicing, engine coolants and cleaners.
Converting the molecule to its sodium salt is what makes a 50 percent aqueous solution possible at all, and it is why the product is strongly alkaline. The specification holds pH between 11.8 and 12.0 measured as a 10 percent dilution, so the neat liquid is more alkaline again and has to be handled as a caustic material, kept away from acids, oxidizing agents and metals.
Two rows on the specification exist because this is a liquid rather than a powder. The cold test confirms the solution stays clear with no haze or precipitate when chilled, which is what tells a receiving dock the material has not dropped its active out on the way. Free sodium hydroxide is held at 1.0 percent maximum, because the caustic that keeps the salt in solution is also the thing a downstream formulation has to allow for.
It is a liquid and it can freeze. PAT's safety data sheet puts the freezing point below minus 5 to minus 10 degrees C, directs the user to store at or above 0 degrees C, and lists protection from freezing among the conditions to avoid.
The CAS Registry Number is 64665-57-2. It is also written as sodium tolyltriazole, TTA-Na, tolyltriazole sodium salt, sodium salt of tolyltriazole, sodium methylbenzotriazole, and TT 50S.
| Property | Specification |
|---|---|
| Appearance | Pale yellow to amber liquid |
| Assay, tolyltriazole sodium salt | 49.5 to 51.0 percent |
| pH, 10 percent solution | 11.8 to 12.0 |
| Specific gravity | 1.186 to 1.210 |
| Sodium hydroxide | 1.0 percent maximum |
| Chlorides | 100 ppm maximum |
| Cold test | Clear, no haze or precipitate |
These are specification limits from the technical data sheet, not typical values. Every batch is released against them and the certificate of analysis reports the measured result. We will send the current TDS and the batch documentation your qualification needs.
Tell us the binder system, the property you are targeting, and the volume you expect. We will confirm the grade, send the documentation, and ship a sample from North American stock.
Yellow-metal passivation metered straight into the feed, in systems where chlorination or temperature rules out the base inhibitor.
Named in PAT's safety data sheet as a recommended use. Protects copper lines in circulating water.
Named in PAT's safety data sheet. Guards copper, brass and solder in a fluid that is already aqueous.
Named in PAT's safety data sheet. Yellow-metal protection in a glycol-water system.
Named in PAT's safety data sheet. Protects yellow metal while the cleaner works on the deposit.
The liquid form is the one a descaler formulator reaches for, because the package is already aqueous.
It is specified where the formulation needs tolyltriazole performance without a dissolving step, holds up against chlorine and other oxidizing biocides better than the unsubstituted azole, stays effective at higher operating temperatures, which is what long-life coolant needs, meters directly through a chemical feed pump into a liquid program, released against a seven-point specification including a cold test and free caustic, and held in United States stock, with sample packs available.
Add it as a liquid to a liquid. The product is built for direct metering into an aqueous system or into a water-based concentrate and needs no premix. In a formulation, add it with the water phase rather than into a solvent or an acidic component.
Expect the pH to move. The specification is 11.8 to 12.0 as a 10 percent solution, so the neat product is more alkaline and will raise the pH of whatever it is dosed into in proportion to the dose. Where a formulation has a tight pH window, allow for the shift in the build order.
Keep it away from acids, oxidizing agents and metals, per PAT's safety data sheet, and use the personal protective equipment the sheet specifies. This is a caustic liquid and it is a different handling proposition from the granular solid.
Protect it from freezing and store at or above 0 degrees C. A container that has frozen and thawed should be warmed to room temperature and homogenized, then checked against the cold test before it goes near a feed system: clear, with no haze and no precipitate.
Package sizes: 500 lb (226.8 kg) drums. Sample packs are available..
Storage: Store in a cool, dry, well-ventilated area at or above 0 degrees C. Keep containers closed when not in use and isolated from incompatible materials, and store away from acids, oxidizing agents and metals. Protect from freezing: PAT's safety data sheet puts the freezing point below minus 5 to minus 10 degrees C.
PAT's safety data sheet records that all components of this product are listed on the TSCA inventory, that no components appear on the CERCLA hazardous chemicals list, that no components appear on the SARA Title III Section 302 or 304 hazardous chemicals lists, and that the product is not listed under California Proposition 65. Refer to the current safety data sheet for hazard classification and for the label elements that apply. Tell us which inventory listings or jurisdictions your qualification needs confirmed and we will confirm them in writing.
The sodium salt. PAT's safety data sheet identifies it as tolyltriazole sodium salt, CAS 64665-57-2, EC 265-004-9, formula C7H6N3.Na, at 49 to 51 percent with the balance water, and names it Sodium Tolyltriazole 50% Solution. The transport entry on the same sheet is a corrosive liquid, basic, and the solution reads pH 11.8 to 12.0 at a ten-fold dilution. Free-acid tolyltriazole is CAS 29385-43-1, it is a near-neutral solid, and it is the granular product on this catalog. The two are different substances and they are handled differently.
The 49.5 to 51.0 percent on the certificate of analysis is the assay of the tolyltriazole sodium salt, and that is what lots are released against. Because the salt carries a sodium atom in place of a hydrogen, the equivalent expressed as free tolyltriazole is lower, and some specifications are written that way. PAT's documents state the release number without naming the basis, so if your specification is on a free-tolyltriazole basis, tell us and we will confirm in writing which number applies before you specify it.
It confirms the solution stays clear with no haze and no precipitate when it is chilled. A 50 percent salt solution is a concentrated one, and the thing that goes wrong with a concentrated solution in a cold trailer or an unheated warehouse is that some of the active drops out. A clear cold test is the row that tells you the material arrived the way it left. If a drum reaches you hazy or with solids in it, tell us before you feed it.
The same question the two solids raise, and the same answer. Take the tolyltriazole salt where the system runs hot or carries an oxidizing biocide such as chlorine, which is why it is the one specified for chlorinated cooling water, engine coolant and long-life high-temperature fluids. Take the benzotriazole salt at 40 percent where neither condition applies. Both are ready to meter and both are alkaline.
PAT's safety data sheet puts the freezing point below minus 5 to minus 10 degrees C, directs the product to be stored at or above 0 degrees C, and lists freezing among the conditions to avoid. A container that has frozen and thawed should be warmed to room temperature and homogenized, then checked against the cold test before use. Ask us if a lot looks wrong after a cold shipment.
Yes, ask for a sample. It is stocked in the United States in sample packs as well as in 500 lb drums, which is 226.8 kg, and a sample is the cheapest way to find out whether the liquid form suits your feed system. Tell us the volume and the lead time for a production requirement and we will confirm both with the quote.
Yes. We send the Technical Data Sheet (TDS), Safety Data Sheet (SDS), and Certificate of Analysis (COA) on request, in the current revision. Use Request TDS or SDS above and tell us what your qualification review needs.
The same chemistry as a dry 99 percent solid.
The base inhibitor as a ready-to-meter liquid.
Grades, forms and what we hold in stock.
The selection question this grade exists to answer.
Yellow-metal passivation where the biocide program rules the choice.
Which azole to put in the feed, before deciding on the form.