2-Mercaptobenzimidazole CAS 583-39-1

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Product Description

2-Mercaptobenzimidazole (MBI) is a high-performance organic compound primarily used as a powerful antioxidant and heat stabilizer in various industrial applications. It appears as a light yellow or off-white powder and is recognized for its excellent anti-degradation properties, particularly in rubber processing where it protects materials from the effects of oxygen, heat, and heavy metals. Its function as a corrosion inhibitor for copper and its alloys also makes it a valuable component in manufacturing and protective formulations.

Product Properties

Property Value
IUPAC Name 1,3-Dihydro-2H-benzimidazole-2-thione
CAS Number 583-39-1
Molecular Formula C₇H₆N₂S
Molecular Weight 150.20 g/mol
Appearance Off-white to light yellow crystalline powder
Melting Point >300 °C (572 °F)
Solubility Insoluble in water; soluble in ethanol, acetone
Purity ≥99%

Product Usage

  • Rubber Industry: Acts as a primary and secondary antioxidant in the vulcanization of natural rubber (NR), styrene-butadiene rubber (SBR), and nitrile rubber (NBR). It effectively prevents aging caused by heat and oxygen.
  • Corrosion Inhibition: Widely used as a corrosion inhibitor to protect copper, bronze, and other copper alloys from tarnishing and degradation, especially in industrial water systems and antifreeze solutions.
  • PVC Stabilization: Functions as a heat stabilizer in the production of polyvinyl chloride (PVC) products to enhance their durability.
  • Pharmaceuticals & Agrochemicals: Serves as a key intermediate in the synthesis of various pharmaceutical drugs (such as omeprazole) and specialized agrochemicals.
  • Plating Additive: Used as a brightening agent in copper plating baths to improve the quality and appearance of the final plated surface.

Packaging and Shipping

Packing: 25KG/Drum

Delivery: With in 5-7 working days.

Storage

Please store in a dry and dark place

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