Mercaptobenzothiazole, MBT Chemical


2-Mercaptobenzothiazole (MBT) is an organosulfur compound with the formula C6H4NSCSH. The molecule consists of a benzene ring fused to a 2-Mercaptothiazole ring. MBT chemical is used in the vulcanization of rubber.

Using mercaptobenzothiazole, rubber vulcanizes with less sulfur and at milder temperatures. Both factors give a stronger product. This effect was reported in 1921 by workers at Pirelli and at Goodyear Tire & Rubber.

Mercaptobenzothiazole is used as a cooling tower biocide. MBT chemical has also been used in the past in the gold-mining industry to “float” the gold from ore residue as part of the extraction process.

CAS No.: 149-30-4

Molecular Weight: 167.24

Molecular Formula: C7H5NS2

Structural Formula:



Appearancegrayish-white or light yellow powder
Active content, %99.0 Min.
Melting point, ℃171.0 Min.
Heating loss, %0.40 Max.
Ash content, %0.30 Max.
Residue (150um), %0.10 Max.


MBT chemical has a slightly foul odor and bitter taste, non-poisonous. Easily soluble in ethyl acetone, acetone, dilute solution of sodium hydroxide and sodium carbonate, soluble in ethyl alcohol, not easily soluble in benzene, insoluble in water and gasoline.

2-Mercaptobenzothiazole (MBT) is a hemi-ultra accelerator, extensively used in the vulcanization of natural and synthetic rubbers. It mainly used in the manufacture of rubber tires, rubber belts, rubber shoes, and other technical rubber goods.

Package and Storage:

In the plastic bag or kraft paper bag. 25kg/bag or customers’ requirements.

SDS Download:

2-Mercaptobenzothiazole SDS

2-Mercaptobenzothiazole Manufacturers List