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Methyltin Mercaptide DX-181

Item No.: DX-181

CAS: 57583-35-4 

Formula: C31H60O6S3Sn and C22H44O4S2Sn The mass ratio of Methyltin mercaptide and Dimethyltin mercaptide is around 25/75.

Product Properties

Heat Stability:    

DX-181 has high efficient heat stability and excellent initial color stability.


PVC products processed with DX-181 have superior transparency, pure color, little gas and no educt.


The excellent high-temperature color stability and long-term dynamic stability provided by DX-181. Without fouling, the time of cleaning equipment is shortened. It is suitable for all kinds of process of flexible and rigid PVC, such as calendaring, extrusion, injection and blow molding, etc.

Use level:    

On the same condition, less Methyltin mercaptide compared with Butyl tin mercaptide or Octyl tin mercaptide can achieve the same effect.


The product of methyltin mercaptide has been approved by American FDA (21 CFR 178.2010) and certified by Germany BGA (IIA, 4C). It can be used in food packaging materials and water pipes etc. It’s safe and reliable.


PVC film (thermal shrinking packaging film, printing film, calendared film, twisting film)

PVC sheet (clear flexible and rigid sheet, Christmas sheet, advertisement sheet, compound sheet)

PVC granule (granule, shell of electronic communication apparatus etc.)

PVC building and construction materials (water pipe and pipe fittings, chemical pipes, construction materials, profile etc.)

PVC medical apparatus (transfusion device, etc.), food packaging materials, daily-used appliances and others


Packed into iron or plastic drum, 220kg/drum.

Packed into IBC tote,1200kg/IBC, or other customized package.