Accelerator ZMBT（MZ）

Product name: ZMBT  

Chemical name: Zinc 2-Mercaptobenzothiazole

Structure: 

CAS No.: 155-04-4

Specification:

ItemZMBT-2ZMBT-15
PowderOiled PowderPowderOiled Powder
AppearanceWhite or light-yellow powderWhite or light-yellow oiled powderWhite or light-yellow powderWhite or light-yellow oiled powder
Loss on drying [≤ %]0.400.400.400.40
Zinc content [%]16.0-22.016.0-22.015.0-18.015.0-18.0
Residues on 150µm sieve [≤ %]0.100.100.100.10
Free M content (Max) [≤ %]2.02.014.0-18.014.0-18.0

What is ZMBT?

ZMBT (Zinc Mercaptobenzothiazole) is an organic zinc salt widely used in the rubber industry as a secondary accelerator. It belongs to the benzothiazole class of rubber accelerators and is valued for its ability to improve vulcanization efficiency, processing safety, and product quality. ZMBT offers a balanced curing rate between fast accelerators like MBT and slower ones like MBTS, making it especially useful in latex applications where controlled vulcanization is important. Because it disperses easily and does not discolor or stain rubber, it is commonly used in the production of latex gloves, foam rubber, and various molded rubber products.

Properties:

ZMBT is a white to pale yellow powder with a slightly bitter taste. It shows very poor solubility in acetone, benzene, ethanol, and carbon tetrachloride, and is insoluble in water and gasoline. The compound breaks down when exposed to strong acids or bases.

Applications:

ZMBT is suitable for use with NR, IR, SBR, NBR, EPDM, and latex formulations. It functions as an intermediate accelerator between MBT and MBTS. Often used as a secondary accelerator together with PZ or EZ. In dry rubber processing, it provides curing behavior similar to MBT but with reduced scorch risk and improved processing safety, making it ideal for mold curing. Most rubber batches require zinc oxide and stearic acid as activators when using ZMBT. It disperses well in rubber and produces non-staining, non-discoloring products. Typical applications include latex goods, foam rubber, and latex-coated gloves.

Packing:

Supplied in 25 kg bags.

Storage:

Store tightly sealed in a cool, dry, and well-ventilated area, protected from direct sunlight. Shelf life: 1 year.