2-Mercaptobenzothiazole sodium salt
CAS 2492-26-4
EC 219-660-8
Formula C7H5NS2.Na
MW 189.23 g/mol
Heterocyclic Compounds Lubricants & MetalworkingWater TreatmentAutomotiveRubber & Tire Preservation & BiocideCorrosion Inhibition
Description
Sodium 2-mercaptobenzothiazole (CAS 2492-26-4), also known as NA-MBT, Nacap, or sodium mercaptobenzothiazole, is the sodium salt form of mercaptobenzothiazole, supplied as a liquid solution. It carries no assigned E-code and is registered under EC number 219-660-8 with the molecular formula C7H5NS2.Na.
In water treatment systems, NA-MBT functions as a copper and copper-alloy corrosion inhibitor by forming a stable, insoluble surface complex that blocks electrochemical attack. In metalworking fluids and lubricants, it serves as both a biocide and a metal deactivator, suppressing microbial growth while protecting ferrous and non-ferrous components from corrosive degradation.
This product is supplied as an aqueous liquid solution and falls under REACH registration requirements for EU procurement. Buyers should confirm concentration grade and packaging format at point of inquiry, as these vary by supplier. HS code 2934208090 applies for customs classification within the EU.
In water treatment systems, NA-MBT functions as a copper and copper-alloy corrosion inhibitor by forming a stable, insoluble surface complex that blocks electrochemical attack. In metalworking fluids and lubricants, it serves as both a biocide and a metal deactivator, suppressing microbial growth while protecting ferrous and non-ferrous components from corrosive degradation.
This product is supplied as an aqueous liquid solution and falls under REACH registration requirements for EU procurement. Buyers should confirm concentration grade and packaging format at point of inquiry, as these vary by supplier. HS code 2934208090 applies for customs classification within the EU.
Physical Properties
| Melting Point | >300 °C |
| Boiling Point | 103 °C |
| Density | 1,255 g/cm 3 |
| Color | White to Orange to Green |
| Form | liquid |
| Water Solubility | >=10 g/100 mL at 20 ºC |
| Vapor Pressure | 0Pa at 25℃ |
Safety & Handling (Learn More)
Danger GHS05 GHS07 GHS09
H
H314H317H318H400H410
P
P260P261P264P272P273P280P316P317P321P363P391P405P501P264+P265P302+P352P304+P340P333+P317P362+P364P301+P330+P331P302+P361+P354P305+P354+P338
Trade & Regulatory
| HS Code | 2934208090 |
Other Names
Sodium 2-mercaptobenzothiazolesodium 1,3-benzothiazole-2-thiolateNacapNA-MBTDuodexNACAP(R)(2-benzothiazolylthio)-sodiu
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