PRODUCTS

(TTA) TOLYLTRIAZOLE

Tolyltriazole and its related Na salts do belong to the most effective corrosion inhibitors for copper and copper alloys.
Tolyltriazole does further show positive effects in protection of steel, gray iron, cadmium and nickel.

Tolyltriazole can be used in different applications in major industries.
For example, Tolyltriazole is used in cooling water or boiler systems by the industrial water treatment industry. Tolyltriazole can be also used in coolants or antifreeze products.
Another application is the use as an additive in industrial lubricants, like e.g. drilling and cutting fluids.
Tolyltriazole does also work to protect silver ware in dishwashing tablets and can be further used in metal detergents.

CAS No: 29385-43-1
EC No:249-596-6

Formula: C7H7N3
Molecular Weight: 133.16

IUPAC Name: 4-methyl-2H-benzotriazole

How does Tolyltriazole work?

As a corrosion inhibitor, Tolyltriazole decreases the corrosion rate of metals and alloys.
This works by forming a coating, a passivation layer, which prevents access of the corrosive substance to the metal or alloy underneath.
This is of particular importance in industries where fluids routinely need to be in continuous contact with metals that require protection.

Tolyltriazole does show outstanding thermic and oxidative stability and is also resistant to UV light.
Tolyltriazole does not negatively affect the appearance of the metal it's applied to.

Tolyltriazole is very bright in color so that solutions – either aqueous or in different solvents – are clear and almost colorless.

Pure tolyl triazole (TTA) is a white granule or powder.
Tolyltriazole is a mixture of 4-methyl-benzotriazole and 5-methyl-benzotriazole.
Tolyltriazole's melting point is from 80℃ to 86℃, soluble in alcohol, benzene、toluene、chloroform, and watery lye, and hardly soluble in water.

Uses:
Tolyltriazole is mainly used as an antirust and corrosion inhibitor for metals (such as silver, copper, zinc, lead, nickel, etc..), and for antirust oil (tallow) products, the gas phase corrosion inhibitor of copper and aldary, lubricant additive, cycle water treating compound and auto antifreeze.

Tolyltriazole also be used with manifold sterilization algaecide and has a very good corrosion mitigation effect on the closed-cycle cooling water system.

APPLICATIONS
Tolyltrizole is an effective corrosion inhibitor for copper and copper alloys.
Tolyltriazole works by adhering to the surface of copper and forming a strong electrochemical barrier that is a few molecules thick to protect against attacks by corrosive ions.
The protective barrier is not easily removed and shows a high degree of thermal and oxidative stability.
In solution, Tolyltriazole complexes copper to protect against galvanic corrosion by other metals.
Although structurally similar to benzotriazole, the extra methyl group of Tolyltriazole aids in solubility in some organic solvents.
Tolyltriazole is commonly used in applications such as circulating water cooling systems, runway deicer, brake and hydraulic fluids, automotive coolants, metalworking fluids, and other specialty lubricants.

Synthesis:
1. An older method is obtained by reacting m-toluidine diazonium salt with p-toluene sulfonamide.

2. Toluidine is diazotized, cyclized in acetic acid, and then distilled under reduced pressure to obtain crude tolytriazole.
After recrystallization, refinement, and drying, a purer tolyl triazole can be produced.

3. There is another method to produce purer tolytriazole without distillation: methyl o-phenylenediamine and Ethylhexyl nitrite as raw materials and ethyl hexanol as solvent.

Production:
1. Feeding: Put o-phenylenediamine, sodium nitrite, and water into the stainless steel reaction kettle in the ratio of 1:1.1~1.2:10~15.

2. Raise temperature and pressure: turn on the stirring, raise the temperature to 240~260℃, control the pressure between 3.0~4.0MPa, and keep the reaction warm for 3~3.5 hours.

3. Transfer to acidification kettle: lower the temperature to 120~130℃, and transfer the reaction product to the kettle.

4. Adjust pH and stratification: Adjust pH from 11.7 to 5.0 with concentrated sulfuric acid and stratify.

5. Purification and collection: The stratified oil layer goes into the distillation kettle for purification under reduced pressure, and the 202~204℃/15mmHg fraction products are collected.

Uses:
Tolyltriazole is mainly used as an antirust and corrosion inhibitor for metals.
Such as silver, copper, zinc, lead, nickel, etc.
Tolyltriazole is also for antirust oil (tallow) products, the gas phase corrosion inhibitor of copper and aldary, lubricant additive, cycle water treating compounds, and auto antifreeze.

Tolyltriazole also can be concernedly used with manifold sterilization algaecide.
Tolyltriazole has a very fine corrosion mitigation effect on close-cycle cooling water systems.

Compared with benzotriazole, tolyltriazole has better corrosion inhibition, thermal stability, and chlorine resistance.
Tolyltriazole can replace benzotriazole in the automotive industry and water treatment industries.

Tolyltriazole has one more methyl group than benzotriazole in the molecular structure, which improves the complex film’s hydrophobicity.
And the presence of methyl group does not interfere with the binding between molecule and copper.

Tolyltriazole is mainly used as antirust and corrosion inhibitor for metals (such as silver, copper, zinc, lead, nickel, etc..), and for antirust oil (tallow) products, the gas phase corrosion inhibitor of copper and aldary, lubricant additive, cycle water treating compound and auto antifreeze.
Tolyltriazole also can be used with manifold scale inhibitor and sterilization algaecide.
Tolyltriazole work as corrosion inhibitor very well especially in close cycle cooling water system.

Shelf Life

Under proper storage conditions, the shelf life is 24 months.

SYNONYMS:

29878-31-7
4-Methyl-1H-benzotriazole
4-methyl-1H-1,2,3-benzotriazole
4-Methyl-1H-benzo[d][1,2,3]triazole
4-Tolyltriazole
4-METHYLBENZOTRIAZOLE
Tolytriazole
4-methyl-2H-benzotriazole
1H-Benzotriazole, 4-methyl-
7-Methyl-1H-benzotriazole
Methylbenzotriazole
1H-Benzotriazole,7-methyl-
4-methyl-1,2,3-benzotriazole
7-methyl-1H-benzo[d][1,2,3]triazole
QKK8999IZA
DTXSID50274037
DSSTox_CID_6171
DSSTox_RID_78044
DSSTox_GSID_26171
1H-Benzotriazole, 4(or 5)-methyl-
CAS-29385-43-1
4-METHYL-1H-BENZO(D)(1,2,3)TRIAZOLE
UNII-QKK8999IZA
Teltolytriazole
Tolyl triazole
EINECS 249-921-1
4MeBT
4-methyl-benzotriazole
4-MeBT
4Me-BT
Tolyltriazole (Granular)
4-Me-BTR
4-Me-BT
Tolyltriazole 99.0% min
SCHEMBL107037
SCHEMBL446696
CHEMBL3184205
BENZOTRIAZOLE, 4-METHYL-
ALBB-005409
Tox21_201321
Tox21_303186
1H-BENZOTRIAZOLE, 7-METHYL-
MFCD00035800
STK503394
AKOS023092909
AKOS037652935
7-Methyl-1H-1,2,3-benzotriazole #
FS-5046
NCGC00249024-01
NCGC00249024-02
NCGC00256993-01
NCGC00258873-01
BB 0254273
FT-0638850
FT-0671521
1H-1,2,3-Benzotriazole, 4-(methyl-d3)-
4-Methyl-1H-benzotriazole, analytical standard
C80091
AB01319782-02
EN300-6996464
A876362
Q27287307
Z1198147968