Huzhou Xinaote Pharmchem Co., Ltd.

Huzhou Xinaote Pharmchem Co., Ltd.

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Methyl Tin Mercaptide

Methyl Tin Mercaptide
Product name:Methyl Tin Mercaptide



Chemical Structure:


Chemical Formula:

C31H60O6S3Sn and C22H44O4S2Sn

The mass ratio of methyl tin mercaptide and dimethyl tin mercaptide is around 25/75.


Molecular Weight:

555.43 g /mol


181, Methyltin mercaptide heat stabilizer, Methyl Tin Stabilizer, 57583-35-4, Einecs 260-829-0, Tin methylmercaptan heat stabilizer, Isooctyl thioglycolate dimethyl tin, MONOMETHYLTINTRIS- (ISOOCTYLTHIOGLYCOLATE), Methyltin mercaptide, Dimethyltin bis (2-ethylhexyl thioglycolate), dimethyltin bis (2-ethylhexyl mercaptoacetate), PVC heat stabilizers


Appearance and Description:

Colorless transparent liquid. It has high efficient heat stability and good early color stability. It has better transparency, clarity, non-odour and weatherability;
Perfect chroma stability and long dynamic heat stability under a high temperature production lines. It's very suitable for the various processings of soft/hard PVC such as calendering, extrusion, injection, blowing, etc;
Less dosage, 15-20% less than Butyl tin and Octyl tin.

Transparency: The products processed with our Methyl Tin Mercaptide have superior transparency, clear color, little gas and no educt.

Process: The excellent high-temperature color stability and long-term dynamic stability provided by Methyl Tin Mercaptide. 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.

Safety: The product of Methyl Tin 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.


Technical Specifications




Following Standards


Clear liquid

Internal Standard

Color (Pt-Co)

≤ 50


Density (25°C) g/cm3



Viscosity (25°C) mPa.S



Tin content (%)





Indications & Usage:

Methyl Tin Mercaptide is used in:

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

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

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

PVC building and construction materials (drinking 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


Hard calender run/flow run: 0.6-1.8phr;

Semi-hard/soft calender run: 1.2-0.4phr;

Hard extrusion blown film: 0.8-1.8phr;

Hard extrusion tubular goods: 0.2-0.35phr;

Hard injection pipe fittings: 1.0-1.8phr;

Extrusion window & door profile shapes: 0.65-1.0phr;

Extrusion curtain/rubber hose: 0.4-0.8phr.

Packing & Transportation:

Packing: The product is packed into iron drums with plastic coating or plastic drums, and the net weight is 220kg per drum. 16 Mts per 20ft FCL container.

Transportation: The product is the heat stabilizer for processing PVC, and it is non-flammable and non-explosive. During transport, keep sealed, cover/lid upward, reduce the contact with the air. Don't let the material have contact with pipeline or container which made of cooper or iron. Operators should wear protective equipment.

Storage, Safety and Environment Protection:

Storage: The iron or plastic drums should be placed in cool and dry area with the storage temperature from 5 to 30°C. The drums should be sealed immediately after use. It should be stored in ventilated, cool and dry place and avoid direct sunlight. Operators should wear protective equipment.

Safety: Avoid any contact with mouth, eyes and skin. In case of contact with skin, wash thoroughly with soap and water immediately and get medical attention. The work place should be ventilated so as to avoid inhaling evaporated gas directly in the production operation.

Environment: According to environment safety standards of Occupational Safety & Health Administration (OSHA), including the standard of tin use for all the industries. TWA (eight hours average value) is 0.1mg/m3 (tin); short-time exposure value is 0.2mg/m3


Warranty period:

12 months.


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Typical COA

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