Chinese Name: 5-Methylbenzotriazole (This line of electronic-grade chemicals can be customized to meet your specific metal impurity specifications; we accept custom orders.)

Chinese synonyms: meta-tolyl azide; meta-azidomethylbenzene; methylbenzotriazole; 5-methylbenzotriazole; 5-methylbenzotriazol; 5-methylbenzotriol; 5-methylbenzotriazole; 5-methyl-1H-benzotriazole, ≥98%

English Name: 5-Methyl-1H-benzotriazole

English synonyms: 5-Methyl-1H-benzo-1,2,3-triazole; 5-methyl-1H-benzotriazole; m-AziChemicalbookminotoluene; 5-METHYLBENZOTRIAZOLE, 98+%; 5-METHYL-1H-BENZOTRIAZOLE, 99+%; 5-Methyl-2H-benzotriazole; 5-Methyl-3H-benzotriazole; 6-Methyl-1H-benzotriazole

High-purity copper & cobalt corrosion inhibitor and metal passivator — for semiconductor etchants, coolants, aviation lubricants and IC packaging.

Product Overview
5-Methylbenzotriazole (5-MBTA, also called 5-TTA or 5-methyl-1H-benzotriazole) is a benzotriazole-derivative corrosion inhibitor. The methyl substitution gives it superior thermal stability, stronger UV resistance and better organic-solvent solubility than conventional benzotriazole (BTA), making it the inhibitor of choice for demanding, long-cycle applications.

High thermal stability — outperforms BTA in high-temperature and long-life service
Strong adsorption on Cu, Co and Al — forms a dense protective film that suppresses dissolution, galvanic and pitting corrosion
Excellent solubility in ethylene glycol, propylene glycol and organic solvents
Electronic grade available — metal impurities down to ≤50 ppb per element, custom to ≤20 ppb
Stable supply chain — industrial grade at ton scale with electronic-grade purification; a real domestic replacement for Japanese / Korean specialty suppliers

CAS Number: 136-85-6

Molecular formula: C7H7N3

Molecular weight: 133.15

EINECS No.: 205-265-8

Melting point: 80–82°C (lit.)

Boiling point: 210–212°C at 12 mmHg (literature value)

Density: 1.1873 (rough estimate)

Form: Crystalline powder

Color: Cream to Beige

Technical Specifications

Isomer ratio (5-isomer content) and exact metal impurity profile are provided per batch on the Certificate of Analysis (COA). Custom ultra-pure grade (single impurity ≤ 20 ppb) is available on request.

This product serves as a corrosion inhibitor for copper and copper alloys, similar to benzotriazole (BTA). Commercial formulations may also include 4-methylbenzotriazole ([29878-31-7]) or a mixture of the two, collectively referred to as TTA. Benzotriazole-based inhibitors form insoluble, stable complexes with cuprous ions, which adsorb onto the metal surface to create a thin, stable, and inert protective film only about 5 × 10⁻⁷ cm thick. This film remains highly stable across a wide range of media, thereby providing effective protection for copper alloys. BTA exhibits excellent corrosion-inhibiting performance over a pH range of 5.5–10; however, in low-pH environments, TTA demonstrates superior inhibition compared with BTA. Other triazole compounds, such as triazole itself and naphthyltriazole, also possess some degree of corrosion inhibition for copper and copper alloys, but their effectiveness is generally inferior to that of BTA and TTA. Methylbenzotriazole is also employed in organic synthesis.

Key Applications

• Coolant & antifreeze — copper / brass corrosion inhibitor for automotive and new-energy battery thermal management (BASF-class systems)
• Semiconductor etchant — selective copper / cobalt etch inhibitor for wet etching and surface treatment (Samsung-class formulations)
• Aviation lubricant — high-temperature antioxidant & corrosion inhibitor for synthetic ester oils
• IC packaging — metal migration inhibitor (Ag⁺ / Cu⁺) for EMC / encapsulation resins (Fujifilm-class systems)

Grades & Customization

We supply industrial, electronic and packaging grades. Metal impurity control can be tightened from 100 ppb → 50 ppb → 20 ppb per element. Every batch ships with a full COA; SDS/MSDS, REACH and RoHS documentation available on request.

Packaging & Storage

• 25 kg fiber drum (or customized packaging on request)
• Store in a cool, dry, ventilated place; protect from light and moisture
• Shelf life: 12 months under recommended storage conditions

Jiangsu Juming Chemical Technology Co., Ltd., established in 2017 is located in Jiangsu Province. The company integrates R&D, production, sales, and service. Leveraging its strong technical capabilities, Juming continuously invests in talent development and new product innovation. Equipped with advanced testing and production facilities, the company ensures high-quality products, a wide variety of options, and large-scale production. Major categories cover 5-Methyl-1H-benzotriazole,BPADA， 4-Vinylbenzyl chloride,Vinylbenzyl chloride，1-(chloromethyl)-2-vinylbenzene, and 1-(chloromethyl)-3-viny lbenzene, annual production capacity of 60,000 tons. The company's product categories include photoinitiators, UV absorbers, water treatment corrosion inhibitors and electronic chemicals.
Technical Advantages:
- Advanced microchannel & continuous flow technology for highly challenging chemical processes
- ppb-level metal ion impurity purification capability for electronic grade products
- GMP standard clean workshops and professional purification equipment
- ICP-MS, HPLC, GC detection systems ensuring strict quality control
- Flexible production scale from gram-level R&D to hundred-ton industrial production
Production & Service Strength:
- Multiple production bases across China with 60,000 tons annual total capacity
- ISO9001 certified quality management system
- Professional R&D team with nearly 20 years of chemical synthesis experience
- Complete CDMO service capability from process development to industrial scale-up
- Global export to North America, Europe, Asia-Pacific, serving semiconductor, electronics, 5G communication, water treatment, and advanced material industries
Our mission is to provide high-purity, high-quality specialty chemical materials with reliable supply and professional technical support to partners worldwide.

Research and development, production, andsales of high-end electronic chemicals for semiconductors

Two R&D and pilot-scale bases, with cooperative production facilities in Kaifeng and Gansu
Research and development ability
processes for highly challenging and hazardous chemicals.
Advanced Microchannel & Continuous Flow Technology
Production assurance
Equipped with GMP workshops and continuous flow reactors
Full-scale production from grams to hundreds of tons
Sales team
A professional team with many years of salesexperience
Protect all customer informationandcommercial interests.

We have a professional export team and our chemicals are exported to European、Asia and American countries. We can do OEM and ODM services. We have a chemicals develop team that develops and designs new chemicals every year.

Chinese Name: 5-Methylbenzotriazole (This line of electronic-grade chemicals can be customized to meet your specific metal impurity specifications; we accept custom orders.)

Chinese synonyms: meta-tolyl azide; meta-azidomethylbenzene; methylbenzotriazole; 5-methylbenzotriazole; 5-methylbenzotriazol; 5-methylbenzotriol; 5-methylbenzotriazole; 5-methyl-1H-benzotriazole, ≥98%

English Name: 5-Methyl-1H-benzotriazole

English synonyms: 5-Methyl-1H-benzo-1,2,3-triazole; 5-methyl-1H-benzotriazole; m-AziChemicalbookminotoluene; 5-METHYLBENZOTRIAZOLE, 98+%; 5-METHYL-1H-BENZOTRIAZOLE, 99+%; 5-Methyl-2H-benzotriazole; 5-Methyl-3H-benzotriazole; 6-Methyl-1H-benzotriazole

High-purity copper & cobalt corrosion inhibitor and metal passivator — for semiconductor etchants, coolants, aviation lubricants and IC packaging.

Product Overview
5-Methylbenzotriazole (5-MBTA, also called 5-TTA or 5-methyl-1H-benzotriazole) is a benzotriazole-derivative corrosion inhibitor. The methyl substitution gives it superior thermal stability, stronger UV resistance and better organic-solvent solubility than conventional benzotriazole (BTA), making it the inhibitor of choice for demanding, long-cycle applications.

High thermal stability — outperforms BTA in high-temperature and long-life service
Strong adsorption on Cu, Co and Al — forms a dense protective film that suppresses dissolution, galvanic and pitting corrosion
Excellent solubility in ethylene glycol, propylene glycol and organic solvents
Electronic grade available — metal impurities down to ≤50 ppb per element, custom to ≤20 ppb
Stable supply chain — industrial grade at ton scale with electronic-grade purification; a real domestic replacement for Japanese / Korean specialty suppliers

CAS Number: 136-85-6

Molecular formula: C7H7N3

Molecular weight: 133.15

EINECS No.: 205-265-8

Melting point: 80–82°C (lit.)

Boiling point: 210–212°C at 12 mmHg (literature value)

Density: 1.1873 (rough estimate)

Form: Crystalline powder

Color: Cream to Beige

Technical Specifications

Isomer ratio (5-isomer content) and exact metal impurity profile are provided per batch on the Certificate of Analysis (COA). Custom ultra-pure grade (single impurity ≤ 20 ppb) is available on request.

This product serves as a corrosion inhibitor for copper and copper alloys, similar to benzotriazole (BTA). Commercial formulations may also include 4-methylbenzotriazole ([29878-31-7]) or a mixture of the two, collectively referred to as TTA. Benzotriazole-based inhibitors form insoluble, stable complexes with cuprous ions, which adsorb onto the metal surface to create a thin, stable, and inert protective film only about 5 × 10⁻⁷ cm thick. This film remains highly stable across a wide range of media, thereby providing effective protection for copper alloys. BTA exhibits excellent corrosion-inhibiting performance over a pH range of 5.5–10; however, in low-pH environments, TTA demonstrates superior inhibition compared with BTA. Other triazole compounds, such as triazole itself and naphthyltriazole, also possess some degree of corrosion inhibition for copper and copper alloys, but their effectiveness is generally inferior to that of BTA and TTA. Methylbenzotriazole is also employed in organic synthesis.

Key Applications

• Coolant & antifreeze — copper / brass corrosion inhibitor for automotive and new-energy battery thermal management (BASF-class systems)
• Semiconductor etchant — selective copper / cobalt etch inhibitor for wet etching and surface treatment (Samsung-class formulations)
• Aviation lubricant — high-temperature antioxidant & corrosion inhibitor for synthetic ester oils
• IC packaging — metal migration inhibitor (Ag⁺ / Cu⁺) for EMC / encapsulation resins (Fujifilm-class systems)

Grades & Customization

We supply industrial, electronic and packaging grades. Metal impurity control can be tightened from 100 ppb → 50 ppb → 20 ppb per element. Every batch ships with a full COA; SDS/MSDS, REACH and RoHS documentation available on request.

Packaging & Storage

• 25 kg fiber drum (or customized packaging on request)
• Store in a cool, dry, ventilated place; protect from light and moisture
• Shelf life: 12 months under recommended storage conditions

Jiangsu Juming Chemical Technology Co., Ltd., established in 2017 is located in Jiangsu Province. The company integrates R&D, production, sales, and service. Leveraging its strong technical capabilities, Juming continuously invests in talent development and new product innovation. Equipped with advanced testing and production facilities, the company ensures high-quality products, a wide variety of options, and large-scale production. Major categories cover 5-Methyl-1H-benzotriazole,BPADA， 4-Vinylbenzyl chloride,Vinylbenzyl chloride，1-(chloromethyl)-2-vinylbenzene, and 1-(chloromethyl)-3-viny lbenzene, annual production capacity of 60,000 tons. The company's product categories include photoinitiators, UV absorbers, water treatment corrosion inhibitors and electronic chemicals.
Technical Advantages:
- Advanced microchannel & continuous flow technology for highly challenging chemical processes
- ppb-level metal ion impurity purification capability for electronic grade products
- GMP standard clean workshops and professional purification equipment
- ICP-MS, HPLC, GC detection systems ensuring strict quality control
- Flexible production scale from gram-level R&D to hundred-ton industrial production
Production & Service Strength:
- Multiple production bases across China with 60,000 tons annual total capacity
- ISO9001 certified quality management system
- Professional R&D team with nearly 20 years of chemical synthesis experience
- Complete CDMO service capability from process development to industrial scale-up
- Global export to North America, Europe, Asia-Pacific, serving semiconductor, electronics, 5G communication, water treatment, and advanced material industries
Our mission is to provide high-purity, high-quality specialty chemical materials with reliable supply and professional technical support to partners worldwide.

Research and development, production, andsales of high-end electronic chemicals for semiconductors

Two R&D and pilot-scale bases, with cooperative production facilities in Kaifeng and Gansu
Research and development ability
processes for highly challenging and hazardous chemicals.
Advanced Microchannel & Continuous Flow Technology
Production assurance
Equipped with GMP workshops and continuous flow reactors
Full-scale production from grams to hundreds of tons
Sales team
A professional team with many years of salesexperience
Protect all customer informationandcommercial interests.