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Sodium 2-mercaptobenzothiazole

CAS Number
2492-26-4
EC Number
219-660-8
Chemical Formula
C7H5NS2.Na
Molecular Weight
189.2 g/mol

Description

Sodium 2-mercaptobenzothiazole (CAS 2492-26-4 ), commonly referenced as Sodium MBT or Na-MBT, is the water-soluble sodium salt form of mercaptobenzothiazole used across industrial sectors as a corrosion inhibitor and biocide. Unlike its parent compound, it dissolves readily in aqueous systems, making it the preferred form for liquid formulations requiring metal protection or microbial control in various manufacturing environments. In metalworking and cutting fluid formulations, Na-MBT protects non-ferrous metals, particularly copper and brass, from corrosion during machining and storage. This ensures the integrity of the finished metal parts. Water treatment systems use it to inhibit metal corrosion in cooling towers and closed-loop circuits where copper alloy components are present. It provides a protective layer that prevents oxidative damage to the system. Automotive antifreeze and coolant manufacturers incorporate it as a copper and brass corrosion inhibitor to extend system component life. This application is critical for maintaining the efficiency of vehicle cooling systems. It also functions as a preservative and biocide in industrial fluids, rubber latex processing, and coating systems where microbial growth would degrade product quality. This helps maintain the shelf life of the fluids. Sodium MBT is supplied as a white to off-white powder or as an aqueous solution, typically at 50% concentration. Standard grades include technical grade for industrial applications and higher-purity grades for specialty formulations. Packaging ranges from bags and drums to intermediate bulk containers depending on volume requirements. These options allow for flexible logistics and storage solutions for chemical distributors and end-users alike. Contact us for supply of Sodium 2-mercaptobenzothiazole Request Quote

Other Names (Synonyms)

Sodium mercaptobenzothiazole | Duodex | Sodium MBT | NaMBT | Caswell No. 541C | Sanbit N-G | Sodium benzothiazolethiolate | Sodium mercaptobenzothiazolate | Na-MBT

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point>300 °C
Boiling Point103 °C
Density1,255 g/cm 3
ColorWhite to Orange to Green
Formliquid
Water Solubility>=10 g/100 mL at 20 ºC
Vapor Pressure0Pa at 25℃

Safety & Handling

Danger
GHS05· CorrosiveGHS07· IrritantGHS09· Environment

Hazard Statements

H314Causes severe skin burns and eye damage
H317May cause an allergic skin reaction
H318Causes serious eye damage
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects

Precautionary Statements

P260Do not breathe dust/fume/gas/mist/vapours/spray.
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P264Wash … thoroughly after handling.
P272Contaminated work clothing should not be allowed out of the workplace.
P273Avoid release to the environment.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P316Get emergency medical help immediately.
P317Get emergency medical help.
P321Specific treatment (see … on this label).
P363Wash contaminated clothing before reuse.
P391Collect spillage.
P405Store locked up.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P352IF ON SKIN: Wash with plenty of water.
P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P317Get emergency medical help.
P364Take off contaminated clothing and wash it before reuse.
P331Rinse mouth. Do NOT induce vomiting.
P354IF ON SKIN: Take off immediately all contaminated clothing. Rinse skin with water/shower.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code2934208090