Mercaptobenzothiazole (MBT) Test Kits
What is Mercaptobenzothiazole?
Mercaptobenzothiazole (MBT), with the molecular formula C₇H₅NS₂, is an organic compound classified as a sulfur-containing heterocycle. It typically appears as a pale yellow to tan crystalline powder. MBT is widely used in water treatment as a corrosion inhibitor. It works by forming a protective film on metal surfaces, helping to prevent oxidation and deterioration in closed-loop cooling systems, boilers, and other similar equipment.
Why Test for Mercaptobenzothiazole?
Testing for MBT is essential for protecting copper and copper alloys from corrosion. However, excessive MBT can lead to issues such as scaling and chemical imbalances. Regular testing helps maintain proper concentration to ensure system stability. Elevated MBT levels can negatively impact the performance and longevity of closed-loop cooling systems and utility condensers, leading to increased maintenance and downtime. In many industries, monitoring chemical usage is a requirement to meet safety and environmental regulations. Routine MBT testing supports compliance with these standards. Additionally, a sudden drop in MBT levels may indicate leaks, dilution, or contamination. Consistent monitoring allows for early detection and corrective action – helping to prevent costly system failures.
About Our Test Kits
This test kit can perform up to 30 MBT tests. Included in this compact, easy-to-use kit is 30 prefilled ampules with valve assemblies, detection ranges from 50 to 500 ppm, a titrator for easy titration, a 25 mL cup, and step-by-step instructions.
Visual Kits
| Range | MDL | Method | Kit Catalog No. | Refill Catalog No. |
|---|---|---|---|---|
| 50-500 ppm | 50 ppm | Permanganate | K-6810 |
Methods
Mercaptobenzothiazole (MBT) is formulated with various water treatment products to prevent corrosion of copper and copper-containing metals. These tests are particularly well suited to the monitoring of closed-loop cooling water systems and utility condensers where high MBT concentrations are usually maintained.
The Permanganate Method
Reference: Developed by CHEMetrics, Inc. CHEMetrics employs a titrimetric chemistry in which MBT is titrated with potassium permanganate in an acidic medium. No additional end point indicator is required. A color change from pink to straw yellow signals the end of the titration. Results are expressed as ppm (mg/L) MBT.