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High Purity Benzotriazole | CAS 95-14-7 Supplier

Unlocking Superior Metal Protection with High-Purity 1,2,3-Benzotriazole (CAS 95-14-7)

The Evolving Landscape of Corrosion Inhibition: A Market Perspective

In the global fight against corrosion, which costs an estimated $2.5 trillion annually according to NACE International, the role of effective chemical inhibitors has never been more critical. Among these, benzotriazole has emerged as a dominant force, particularly for the protection of copper and its alloys. The global **benzotriazole** market size was valued at approximately USD 850 million in 2023 and is projected to grow at a CAGR of 5.2% from 2024 to 2030. This growth is driven by increasing demand from key sectors such as automotive (antifreeze and coolant formulations), industrial water treatment, and aviation (de-icing fluids). As environmental regulations become stricter, the demand for high-purity, low-toxicity inhibitors like **benzotriazole** is soaring, replacing older, more hazardous options like chromates. This trend underscores the industry's shift towards sustainable and high-performance solutions.

Technical Deep Dive: Understanding Benzotriazole (CAS 95-14-7)

Benzotriazole, systematically named 1,2,3-Benzotriazole (BTA), is a heterocyclic compound with the chemical formula C₆H₅N₃. Its efficacy lies in its unique molecular structure, which allows it to form a stable, passive chemisorption layer on metal surfaces, especially copper. This barrier, just a few molecules thick, effectively isolates the metal from corrosive agents in its environment. Understanding its technical parameters is key to leveraging its full potential.

Parameter	Specification	Significance in Application
Product Name	1,2,3-Benzotriazole (BTA)	The industry-standard name for this highly effective corrosion inhibitor.
CAS Number	`95-14-7`	Unique registry number for precise chemical identification (benzotriazole cas).
EINECS Number	202-394-1	European Inventory of Existing Commercial Chemical Substances registration.
Molecular Formula	C₆H₅N₃	Indicates the elemental composition of one molecule.
Molecular Weight	119.12 g/mol	Crucial for calculating dosage and concentration in formulations.
Appearance	White to light yellow needle-like crystals or powder	A primary visual check for product quality and purity.
Purity (Assay)	≥ 99.5% (Tenger Chemical Standard)	High purity ensures maximum inhibitory effect and prevents side reactions from impurities.
Melting Point	96-99 °C	A key indicator of purity; a narrow melting range signifies fewer impurities.
Ash Content	≤ 0.05%	Low ash content means fewer inorganic impurities that could interfere with performance.
Moisture Content	≤ 0.1%	Low moisture is critical for product stability and accurate weighing for formulations.
pH (1% aqueous solution)	5.5 - 6.5	Ensures compatibility with a wide range of system pH levels without causing fluctuations.

Tenger Chemical's Precision Manufacturing Process: From Raw Material to High-Purity BTA

The superior performance of our 1,2,3-Benzotriazole is not accidental; it is the result of a meticulously controlled and optimized manufacturing process. We adhere to strict ISO 9001 quality management standards at every stage. Unlike physical manufacturing (casting, forging), chemical synthesis requires precision control over reaction conditions, purification, and analysis.

Step 1: Diazotization

O-phenylenediamine is reacted with sodium nitrite and an acid (e.g., acetic acid) under controlled low temperatures. This is the critical diazotization step.

Step 2: Cyclization

The intermediate diazonium salt undergoes an intramolecular cyclization reaction to form the raw benzotriazole ring structure.

Step 3: Purification

The crude product is purified via multi-stage recrystallization from a specific solvent, removing impurities and unreacted materials.

Step 4: Quality Control

Final product is tested using HPLC and GC for purity, melting point analysis, and moisture content to ensure it exceeds industry standards (≥99.5%).

Key Process & Quality Highlights:

Product Material Purity: We guarantee a minimum purity of 99.5%, with typical batches reaching 99.8%+, ensuring maximum active ingredient for your application.
Manufacturing Technology: Our process employs advanced temperature control systems and azeotropic distillation techniques for purification, resulting in a product with exceptionally low moisture and ash content.
Testing Standards (ISO/ASTM): Every batch is certified against internal specifications derived from ASTM D1384 (Corrosion Test for Engine Coolants) performance data, ensuring reliable and repeatable results for our clients.
Long-Term Stability: The crystalline structure achieved through our controlled process provides excellent shelf life and stability, even when stored in demanding conditions.

High Purity Benzotriazole | CAS 95-14-7 Supplier — Pristine, needle-like crystals of Tenger Chemical's high-purity **benzotriazole** (BTA).

Visualizing Performance: BTA Market & Technical Data

Data provides clarity and builds confidence. The following charts illustrate the market distribution of benzotriazole applications and the superior performance of Tenger Chemical's BTA compared to standard-grade products.

Global Benzotriazole Application Market (2023)

Corrosion Inhibition Efficiency (ASTM D1384, Copper)

BTA Stability Across pH Range

Diverse Application Scenarios: Where Benzotriazole Excels

The versatility of 1 2 3 benzotriazole makes it an indispensable additive in numerous industries. Its primary function is to prevent the oxidative degradation of metals, thereby extending equipment life and reducing maintenance costs.

Industrial Water Treatment

In closed-loop cooling and open recirculating systems, BTA protects copper and brass components in heat exchangers and pipes from corrosive elements in the water, preventing costly leaks and efficiency loss.

Automotive & Engine Coolants

A key component in modern antifreeze formulations (OAT/HOAT). It prevents corrosion of the radiator, heater core, and other copper/aluminum parts, ensuring optimal engine temperature regulation.

Aviation & Runway De-icing

Used in aircraft de-icing and anti-icing fluids to protect sensitive aluminum alloys, copper wiring, and composite materials from the corrosive effects of glycol-based fluids.

Metalworking & Lubricants

Added to hydraulic fluids, cutting oils, and lubricants to prevent staining and corrosion of yellow metals during machining and operation, preserving the integrity of finished parts and machinery.

Metal Protection & Packaging

Used in Vapor phase Corrosion Inhibitor (VCI) paper and films to protect metal parts during shipping and storage. BTA sublimes and creates a protective molecular layer on the metal surface.

Electronics Manufacturing

In the production of printed circuit boards (PCBs), BTA is used as an organic solderability preservative (OSP), protecting the copper traces from oxidation before the soldering process.

Technical Advantages & Manufacturer Comparison

Why Choose Tenger Chemical's Benzotriazole?

When selecting a chemical supplier, consistency, purity, and technical support are paramount. Tenger Chemical distinguishes itself from generic suppliers by delivering on all three fronts. Our product is not just a commodity; it's a guaranteed performance solution.

Feature	Tenger Chemical BTA	Standard Generic BTA
Purity (Assay)	Guaranteed ≥ 99.5%	Often 98-99%, variable by batch
Appearance & Form	Uniform, white needle-like crystals	Can be clumpy, off-color (yellowish/pinkish)
Moisture Content	Consistently ≤ 0.1%	Higher, variable content leading to caking and dosage errors
Batch Consistency	High; ensured by SPC and ISO 9001	Inconsistent, requiring frequent re-testing by end-user
Technical Support	Formulation advice & application support	Limited to basic COA
Supply Chain Reliability	Global logistics network, stable inventory	Susceptible to market fluctuations and stockouts

Customized Solutions & Application Case Study

Tailored to Your Needs

We understand that one size doesn't fit all. Tenger Chemical offers customized solutions for our benzotriazole products, including:

Custom Particle Size: Micronized or granular forms for specific dissolution rates or formulation requirements.
Pre-mixed Solutions: BTA solutions in various solvents (e.g., glycols, water) at specified concentrations to simplify your manufacturing process.
Blended Formulations: synergistic blends with other inhibitors like Tolyltriazole (TTA) or 1-hydroxybenzotriazole for enhanced, broad-spectrum metal protection.

Application Case Study: Power Plant Cooling System

Client: A major European power generation facility.
Problem: The facility was experiencing recurring pitting corrosion and elevated copper ion levels in their closed-loop cooling system, leading to reduced heat transfer efficiency and risks of tube failure in their copper-alloy heat exchangers. Their existing inhibitor was underperforming.
Solution: Tenger Chemical's technical team analyzed their water chemistry and operating parameters. We recommended a switch to our high-purity **benzotriazole** (BTA) at a precise dosage of 15 ppm. We provided a detailed transition protocol to flush the system and introduce the new inhibitor.
Results (after 6 months):
- Copper ion concentration in the water dropped by 92%.
- Heat transfer efficiency increased by 8%, leading to significant energy savings.
- Ultrasonic testing of the tubes showed a complete halt in pitting corrosion progression.
- The client reported a 40% reduction in annual maintenance costs related to the cooling loop.

Enhancing Trust & Authority (EEAT)

Our commitment to quality, transparency, and customer success is the foundation of our business. We demonstrate this through our expertise, experience, authoritativeness, and trustworthiness.

Quality Assurance & Certifications

Our manufacturing facilities are ISO 9001:2015 certified for quality management. Every batch of benzotriazole is shipped with a Certificate of Analysis (COA) detailing its compliance with all key parameters. We have been a trusted supplier to leading chemical formulators and industrial users for over 15 years.

Logistics & Delivery

With a robust global logistics network, we ensure timely and reliable delivery. Standard delivery times range from 7-15 days for international sea freight and 3-5 days for air freight. We offer flexible packaging options, from 25kg bags to 500kg super sacks, to meet your production needs.

Dedicated Customer Support

Our support extends beyond the sale. Our technical team is available to answer your questions, provide formulation guidance, and help troubleshoot any issues. We believe in building long-term partnerships with our clients.

Frequently Asked Questions (FAQ) about Benzotriazole

1. What is the primary mechanism of benzotriazole as a corrosion inhibitor?

The primary mechanism involves the chemisorption of the **benzotriazole** molecule onto a metal surface, particularly copper and its alloys. The nitrogen atoms in the triazole ring donate lone-pair electrons to form coordinate bonds with copper atoms. This results in a stable, polymeric complex (Cu-BTA) that forms a thin, non-porous, and hydrophobic passive film on the surface. This film acts as a physical barrier, preventing corrosive species like oxygen, chloride, and sulfide ions from reaching and reacting with the metal.

2. What is the difference between benzotriazole (BTA) and 1-hydroxybenzotriazole (HOBt)?

While both are related, they have different primary applications. Benzotriazole (BTA), or 1,2,3-benzotriazole, is primarily used as a corrosion inhibitor. 1-Hydroxybenzotriazole (HOBt) is most famous for its use as a peptide coupling additive in organic synthesis, where it minimizes side reactions and prevents racemization. Although HOBt also has some inhibitive properties, BTA is far more effective and widely used specifically for metal protection due to its superior film-forming capabilities on copper.

3. What is the recommended dosage for BTA in a closed-loop cooling system?

The optimal dosage depends on several factors, including the system volume, water chemistry (pH, hardness, chloride levels), operating temperature, and the amount of "yellow metal" surface area. However, a typical starting dosage range for **benzotriazole** in a well-maintained closed-loop system is between 10 to 50 ppm (parts per million). For initial passivation of a new or freshly cleaned system, a higher "shock" dose may be used. We recommend a water analysis to determine the precise dosage for maximum effectiveness and cost-efficiency.

4. Is benzotriazole (CAS 95-14-7) soluble in water and other solvents?

Benzotriazole has limited solubility in cold water (approx. 20 g/L at 20°C) but its solubility increases significantly in hot water. It is highly soluble in many organic solvents, including alcohols (methanol, ethanol), glycols (ethylene glycol, propylene glycol), acetone, and toluene. This solubility profile makes it easy to incorporate into a wide range of formulations, from aqueous coolants to solvent-based lubricants.

5. What are the key quality indicators to check when purchasing BTA?

When evaluating a supplier for benzotriazole cas 95-14-7, look for these key indicators on the Certificate of Analysis (COA):
1. Assay (Purity): Should be high, ideally ≥ 99.5%. Higher purity means more active ingredient.
2. Melting Point: A narrow and high melting range (e.g., 97-99°C) indicates high purity.
3. Appearance: Should be white to off-white. A significant yellow or pink hue can indicate impurities or degradation.
4. Moisture Content: Should be very low (e.g., ≤ 0.1%) to prevent caking and ensure accurate dosing.

6. How does Tenger Chemical ensure the purity of its 1,2,3-benzotriazole?

We employ a multi-faceted quality assurance strategy. Firstly, our synthesis process is tightly controlled using Statistical Process Control (SPC) to minimize impurity formation. Secondly, we use a proprietary multi-stage recrystallization and purification process that is highly effective at removing byproducts and unreacted starting materials. Finally, every single batch undergoes rigorous testing in our QC lab using High-Performance Liquid Chromatography (HPLC) and Gas Chromatography (GC) to verify its purity against our stringent internal standards, which exceed typical market requirements.

7. Are there any materials incompatible with benzotriazole?

Benzotriazole is highly stable and compatible with most materials used in industrial systems. However, it should not be used in conjunction with strong oxidizing agents (e.g., high concentrations of chlorine, bromine, or peroxide), as they can degrade the BTA molecule and reduce its effectiveness. In systems requiring a biocide, it is important to select a non-oxidizing biocide or to dose the oxidizer and BTA at different times/locations to avoid direct interaction.