Coating Additives

Product Name

Poly(Methylhydrosiloxane)

Multiple Names

Poly(Dimethylsiloxane-Co-Methylhydrosiloxane);

Methyl Hydrogen Silicone Fluid;

Poly(methylhydrosiloxane);

Methylhydro-Silicone Oil;

PMHS;

Trimethylsiloxy Terminatedpolymethyhydrosiloxane;

Methyl hydro-Silicone Oil;

Polymethylhydrosiloxane, Trimethylsiloxy Terminated.

CAS No. 63148-57-2

EC No. 613-152-3

MF No. C7H22O2Si3

MW No. 222.5

Subheadings	Details
Chemical Name	Poly(Methylhydrosiloxane)
Formula	(CH₃SiHO)ₙ
Molecular Weight	Variable, depending on polymer chain length
Appearance	Clear, colorless to slightly yellow liquid
Density	Approximately 0.96 g/mL at 25°C
Viscosity	Ranges from low to high, depending on grade
Flash Point	Above 50°C (varies with specific product)
Refractive Index	Approximately 1.40 at 25°C
Stability	Stable under normal conditions; avoid heat, sparks, and flames
Solubility	Soluble in organic solvents; insoluble in water
Reactivity	Reactive with oxygen, acids, and bases; undergoes hydrolysis
Hazard Classification	Flammable liquid; may cause irritation to skin and eyes
Applications	– Used as a crosslinker in silicone rubber formulations
	– Employed in the production of silicone oils and greases
	– Utilized in the synthesis of various silicone-based materials
Storage Conditions	Store in a cool, dry place, away from heat and open flames