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Hydrogen Terminated Silicone Oil

Chemical Name:	Hydrogen Terminated Silicone Oil
Product Category:	Silicone Fluids– Products
Structural Formula:
CAS No.:	70900-21-9
Molecular Formula:	C₆H₂₀O₂Si₃
Molecular Weight:	208.4783

Hydrogen Terminated Silicone Oil Description

Hydroxy Terminated Silicone Oil (CAS 70900-21-9), also known as Hydroxy Terminated Polydimethylsiloxane, is a key intermediate for hydrosilylation reactions. This silicone oil is widely used in the production of linear modified silicone fluids with terminal hydrogen reactivity and plays a crucial role in block copolymerization reactions. It is essential for various industries requiring high-performance silicone materials.

Product Type	Si-H Content	Viscosity (25℃)/(mm2/s)	Volatile Substances (150℃,1.5h)
HS-HT65	1.50-1.80%	55-75	≤3.0%
HS-HT120	0.90-1.10%	105-135
HS-HT200	0.60-0.80%	180-220
HS-HT280	0.50-0.60%	250-310
HS-HT460	0.40-0.50%	410-510

Density	0.971g/mL at 25°C
Boiling Point	230°C(lit.)
Flash Point	215°F
Refractive index	n20/D 1.406
Storage Conditions	Room Temperature
Specific gravity	0.90
Appearance	Colorless transparent without visible impurities
Uses	Used in the manufacture of various end-group reactive linear modified silicone oils. It is the key intermediate of block copolymerization reaction. As a chain extender for additive molding liquid silicone rubber, crosslinking agent for additive molding hot vulcanized silicone rubber.
Package	IBC package, net weight 950kg/lBC.
Storage and Handling	Keep it in a cool, diy and ventilated place. Prevention from direct sunlight, is olation from fire sources and keep away fi,om heat sources.

Remarks: In addition to the above, special specifications shall be determined through negotiation between the seller and the buyer.

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Hydrogen Terminated Silicone Oil: Guide

Hydroxy Terminated Silicone Oil (CAS 70900-21-9), also known as Hydroxy Terminated Polydimethylsiloxane, is produced by reacting tetramethyldisiloxane with octamethylcyclotetrasiloxane (D4) using sulfuric acid or other acidic catalysts. The molecular weight and hydrogen content vary based on the capping agent to D4 ratio. This silicone oil contains active Si-H bonds at both ends of the molecule, giving it high reactivity. It is a non-toxic, odorless, transparent liquid commonly used as a key reactive intermediate in silicone-based applications.