Description

5,5'-Methylenebis(1H-Benzotriazole) is a high-performance organic compound belonging to the benzotriazole class, widely recognized for its excellent properties as a corrosion inhibitor and UV stabilizer. This compound is critical for enhancing the durability and longevity of materials by protecting them from oxidative degradation and metal ion-induced decomposition. It is an essential additive for manufacturers in the polymer, metalworking fluid, and coating industries seeking to improve product stability under harsh environmental conditions.

Application

• Primary Corrosion Inhibitor in metalworking fluids, coolants, and industrial lubricants to protect ferrous and non-ferrous metals.
• Copper-Specific Passivator in power plant boiler water treatment and closed-loop cooling systems to prevent copper alloy corrosion.
• Polymer Additive acting as a light stabilizer and antioxidant in engineering plastics, polyamides, and polycarbonates to prevent UV degradation.
• Antifogging Agent and stabilizer in photographic chemicals and film production.
• Synergistic Component in multi-functional additive packages for automotive antifreeze and coolant formulations.
• Intermediate for the synthesis of more complex benzotriazole derivatives used in specialized applications.

Basic Information

Product Name	5,5'-Methylenebis(1H-Benzotriazole)
CAS No.	15805-10-4
Molecular Formula	C₁₃H₁₀N₆
Molecular Weight	250.26 g/mol
Synonyms	MBT; Methylene Bis-Benzotriazole; Bis(1H-benzotriazol-5-yl)methane; 5,5'-Methylenedi-1H-benzotriazole; 1H,1'H-5,5'-Methylenebis(benzotriazole); 2,2'-Methylenebis[1H-benzotriazole]; Tolyltriazole Dimer; TTZ Dimer; Copper Corrosion Inhibitor MBT.
EINECS	239-896-8

Quality Control

Our production of 5,5'-Methylenebis(1H-Benzotriazole) adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed against comprehensive specifications using advanced techniques like HPLC and NMR. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment, ensuring full traceability and compliance with customer and industry requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat sources and incompatible materials. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	White to light yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	285 - 295 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.