Gelest DMS-C21

Identification & Functionality

Chemical Family

Siloxanes

Chemical Name

Bis[[3-(2-hydroxyethoxy)propyl]dimethylsilyl]-terminated polydimethylsiloxane

Plastics & Elastomers Functions

Lubricant (Internal),

Processing Aid,

Surfactant

Technologies

Base Chemicals & Intermediates,

Elastomers,

Plastics

Product Families

Elastomers — Elastomer Additives

Processing Aids,

Surface Modifiers

Base Chemicals & Intermediates — Intermediates

Other Intermediates

Plastics — Polymer Additives

Processing Aids

Chemical Structure

Applications & Uses

Markets

Industrial

Applications

Industrial — Chemical & Industrial Manufacturing

Chemical Manufacturing

Applicable Processes

Chemicals Production

Compatible Polymers & Resins

Epoxies (EP),

Phenolic Resins,

Polyesters,

Polyurethanes (PU),

Silicones

Plastics & Elastomers Processing Methods

Fiber Spinning

Properties

Physical Form

Liquid

Typical Properties

	Value	Units	Test Method / Conditions
Molecular Weight	4,500 - 5,500	g/mol	—
Density	0.98	g/ml	—
Refractive Index (at 20°C)	1.407	—	—
Viscosity (at 25°C)	110 - 140	cSt	—
Non-Siloxane Content	4.0	wt%	—

Regulatory & Compliance

Chemical Inventories

TCSI (Taiwan)

Packaging & Availability

Standard Packaging

• 100 g
• 1 kg
• 10 kg

Packaging Under

Nitrogen