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Sodium salt of 2-Benzothiazolethione

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Sodium salt of 2-Benzothiazolethione (MBT•Na) can be used as the copper corrosion inhibitor in circulating cool water system. The mechanism is due to the chemical absorption of MBT.Na on copper surface, or chelation reaction between them.
  • Sodium salt of 2-Benzothiazolethione
  • ThFine
  • CAS No. 2492-26-4
  • Sodium salt of 2-Benzothiazolethione

Sodium salt of 2-Benzothiazolethione (MBT•Na)

CAS No.  2492-26-4                                              RIDADR: UN1760

Molecular formula: C7H4NNaS2                         EINECS No.: 219-660-8

Molecular Weight: 189.22

Molecular Structure:





Yellow transparent liquid

Solid content %

50.0 min

Density (20) g/cm3

1.20 min

pH (1% water solution)



MBT•Na can be used as the copper corrosion inhibitor in circulating cooling water system. The function of corrosion inhibition is mainly depend on the active copper atoms or copper ions on the surface of copper. They will produce a chemical adsorption. Or will have chelation reaction between them to form a layer of dense and solid protective film, so that the copper material of the equipment will be well protected. Usually, the dosage of 4mg/L is preferred. MBT•Na can also be used as plasticizer and photometer for acid copper plating.

Package and Storage:

Normally in 200L HDPE drum, 1000L IBC, or customers’ requirement.

Storage for six months in shady room and dry place.



MBT•Na; 2-MBT; 2-Mercaptobenzothiazole; 2-Benzothiazolethione

Copper Corrosion Inhibitors

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