Introduction to Tolyltriazole

Tolyltriazole (TTA), with the CAS Number 29385-43-1, is a heterocyclic organic compound widely used as a corrosion inhibitor and stabilizer in various industrial applications. Also known as Methylbenzotriazole, TTA is particularly effective for protecting copper and its alloys from corrosion. This article provides a comprehensive overview of its properties, applications, safety considerations, and more, optimized for Google SEO to ensure high visibility.

Chemical Properties

Tolyltriazole is a white to off-white crystalline powder or granular solid with a faint odor. Its key chemical properties include:

  • CAS Number: 29385-43-1

  • Molecular Formula: C7H7N3

  • Molecular Weight: 133.15 g/mol

  • Melting Point: 76–87°C

  • Boiling Point: Approximately 280°C

  • Density: 1.24 g/cm³

  • Solubility: Slightly soluble in water (0.5 g/L at 20°C), highly soluble in ethanol, benzene, and chloroform

  • Appearance: White to off-white crystalline powder or granules

ITEM STANDARD TEST RESULT
Appearance Light yellow to off white

granule

 Off White granular
Purity(%) 99.5min 99.67
Melting point(℃) 83-87 85.10
Moisture(%) 0.1max 0.02
Ash% 0.05max 0.04
PH 5.0-6.0 5.50
Soluble in alcohol transparent transparent

Applications

1. Corrosion Inhibitor

Tolyltriazole is primarily used as a corrosion inhibitor for copper, brass, and other copper alloys. It forms a protective film on metal surfaces, preventing oxidation and corrosion in applications such as cooling water systems, antifreeze formulations, metalworking fluids, and lubricants.

2. Water Treatment

TTA is employed in water treatment systems to protect metal components in boilers, heat exchangers, and cooling towers. Its ability to inhibit corrosion extends the lifespan of equipment in industrial water systems.

3. UV Stabilizer

In coatings, plastics, and polymers, Tolyltriazole acts as a UV stabilizer, protecting materials from degradation caused by ultraviolet light exposure. It is used in automotive coatings, paints, and packaging materials.

4. Chemical Intermediate

TTA serves as an intermediate in the synthesis of pharmaceuticals, agrochemicals, and dyes, leveraging its heterocyclic structure for versatile chemical reactions.

Safety and Handling

Proper handling of Tolyltriazole (CAS No. 29385-43-1) is essential due to its potential hazards:

  • Hazards: May cause skin and eye irritation (H315, H319) and is harmful if swallowed (H302). It is toxic to aquatic life with long-lasting effects (H411).

  • Protective Measures: Use personal protective equipment (PPE), including gloves, safety goggles, and respiratory protection if dust is present. Handle in a well-ventilated area to minimize exposure.

  • Storage: Store in a cool, dry, well-ventilated area, away from oxidizing agents, strong acids, and heat sources. Keep containers tightly closed.

  • Disposal: Dispose of according to local regulations for hazardous chemicals to prevent environmental contamination.

Why choose our TTA?

Our Tolyltriazole is recrystallized for color <50 APHA and water insolubles <0.01%, ensuring film-forming efficiency and no haze in formulations. Coolant manufacturers achieve 25% longer protection intervals and 15% reduced inhibitor usage. Available in powder and granular forms for industrial/technical grades, packaged in 25kg drums or 200kg bags, with REACH and TSCA compliance for reliable supply.

Frequently Asked Questions (FAQs)

What is Tolyltriazole (TTA)?

Tolyltriazole (TTA) is a triazole corrosion inhibitor with formula C₇H₇N₃ and CAS 29385-43-1, used for yellow metals. It’s a crystalline powder that chelates copper surfaces for protection in coolants and fluids.

How is TTA applied in antifreeze?

Dissolve 0.1-0.25% in glycol-water mixes during formulation; it adsorbs on brass to form a passive layer, effective in 50/50 blends at pH 8-10.

Is TTA environmentally friendly?

Yes, TTA biodegrades >60% in 28 days per OECD 301B, with low EC50 (>100 mg/L) for aquatic life, making it suitable for eco-labeled coolants.

What is the shelf life of TTA?

In sealed, light-protected containers below 30°C, TTA remains stable for 2-3 years, with no sublimation or purity loss.

Can TTA be combined with other inhibitors?

TTA synergizes with benzotriazole at 1:1 ratios for copper/steel blends but avoid strong oxidants; it’s stable with silicates in phosphate-free systems.

Does TTA affect coolant pH?

TTA’s neutral profile has minimal impact, but monitor in alkaline formulations—it’s buffering in pH 7-9 ranges.

What packaging options are available for TTA?

We offer 25kg fiber drums, 50kg bags, and 200kg supersacks, all moisture-proof for dust-free handling.

For inhibition testing, blend recommendations, or volume quotes, our corrosion experts are available.

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