MilliporeSigma
All Photos(1)

433012

Sigma-Aldrich

Poly(dimethylsiloxane), vinyl terminated

average Mw ~25,000, viscosity 850-1,150 cSt (25 °C)(lit.)

Synonym(s):
PDMS
CAS Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.23

form

liquid

Quality Level

mol wt

average Mw ~25,000
average Mw ~25,000

refractive index

n20/D 1.4052

viscosity

850-1,150 cSt(25 °C)(lit.)

bp

>93 °C (lit.)

iodine value

2.2‑3.5

density

0.965 g/mL at 25 °C (lit.)

SMILES string

C[Si](C)=O

InChI

1S/C8H18OSi2/c1-7-10(3,4)9-11(5,6)8-2/h7-8H,1-2H2,3-6H3

InChI key

BITPLIXHRASDQB-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

Compare Similar Items

View Full Comparison

Show Differences

1 of 4

This Item
482005481939432997
refractive index

n20/D 1.4052

refractive index

n20/D 1.406

refractive index

n20/D 1.405

refractive index

n20/D 1.404

viscosity

850-1,150 cSt(25 °C)(lit.)

viscosity

~50,000 cSt

viscosity

~25 cSt

viscosity

18,000-22,000 cSt

density

0.965 g/mL at 25 °C (lit.)

density

0.98 g/mL at 25 °C

density

0.95 g/mL at 25 °C

density

0.97 g/mL at 25 °C

mol wt

average Mw ~25,000

mol wt

average Mn ~110,000

mol wt

average Mn ~550

mol wt

-

bp

>93 °C (lit.)

bp

-

bp

182 °C

bp

-

Application

Mold-making elastomers and encapsulants and sealants for electronic components.

Features and Benefits

Polymerized product provides non-corrosive shield against moisture, dirt and contaminants for electrical components. Polymer may be heat or room temperature cured. Polymerization produces no volatile gases.

Physical form

Divinyl functional reactive silicone fluid.

Storage Class Code

10 - Combustible liquids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Documents related to the products that you have purchased in the past have been gathered in the Document Library for your convenience.

Visit the Document Library

Difficulty Finding Your Product Or Lot/Batch Number?

Product numbers are combined with Pack Sizes/Quantity when displayed on the website (example: T1503-25G). Please make sure you enter ONLY the product number in the Product Number field (Example: T1503).

Example:

T1503
Product Number
-
25G
Pack Size/Quantity

Additional examples:

705578-5MG-PW

PL860-CGA/SHF-1EA

MMYOMAG-74K-13

1000309185

enter as 1.000309185)

Having trouble? Feel free to contact Technical Service for assistance.

Lot and Batch Numbers can be found on a product's label following the words 'Lot' or 'Batch'.

Aldrich Products

  • For a lot number such as TO09019TO, enter it as 09019TO (without the first two letters 'TO').

  • For a lot number with a filling-code such as 05427ES-021, enter it as 05427ES (without the filling-code '-021').

  • For a lot number with a filling-code such as STBB0728K9, enter it as STBB0728 without the filling-code 'K9'.

Not Finding What You Are Looking For?

In some cases, a COA may not be available online. If your search was unable to find the COA you can request one.

Request COA

Articles

Recent Trends in Self-Healing Soft Electronic Materials and Devices

Dr. Tan and researcher introduce recent trends in Self-healing Soft Electronic Materials and Devices. The emergence of smart, functional SHPs will be highly beneficial to the advancement of the next-generation self-healing soft electronic devices. Autonomously self-healing devices could help to minimize the need for repair or replacement of electronics and machines, potentially reducing the cost of materials and reducing electronic waste.

Micro and Nanometer Scale Photopatterning of Self-Assembled Monolayers

Self-assembled monolayers (SAMs) have attracted enormous interest for a wide variety of applications in micro- and nano-technology. In this article, we compare the benefits of three different classes of SAM systems (alkylthiolates on gold).

Related Content

Kit for PDMS Surface Modification

We offer PDMS surface modification kit which allows for durable hydrophilization of various polydimethylsiloxane (PDMS) surfaces.

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service