Hydrogen‑Terminated Silicone Oil

Name: Hydrogen‑Terminated Silicone Oil
Brand: Siwin
Rating: 5.0 (4 reviews)

Siwin‑HF21 is linear polydimethylsiloxane with reactive hydrogen groups at both molecular ends. It is a fundamental intermediate for hydrosilylation reactions to synthesize various end‑reactive modified silicones. It acts as a key raw‑material for silicone block‑copolymer production. It can serve as a chain extender for addition‑curable liquid silicone rubber and cross‑linker for hot‑forming curing systems, improving product elongation‑at‑break, enhancing toughness and reducing hardness. It is also widely used as a starting material to modify organic polymers and resins.

Model:
Siwin-HF21
Brand:
Siwin
Siwin Code:
Siwin-HF21
CAS No.:
70900-21-9

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Product Description

Siwin-HF21

Hydrogen‑Terminated Silicone Oil

Typical properties

Appearance	Colorless transparent liquid
Viscosity(25℃,mPa.s)	2～1000
Content(H%)	0.01～0.3
Molecular weight	700～20000

Application

As a basic raw‑material for hydrosilylation, it is used to prepare various end‑reactive linear modified silicones.
It is a key intermediate for silicone block‑copolymerization.
It can be used as a chain extender for addition‑type liquid silicone rubber and cross‑linking agent for hot‑forming curing systems. It improves the elongation‑at‑break of finished products, increases toughness and lowers hardness.
It is a starting raw‑material for modifying organic polymers, commonly applied in resin‑modification reactions.

Package & Storage

Packaged in internally‑coated iron drums of 25 kg and 200 kg. Store in a cool and well‑ventilated place.

Shelf‑life: 12 months.