Skip to Content
Merck
All Photos(1)

Documents

8.14750

Sigma-Aldrich

Octamethylcyclotetrasiloxane

for synthesis

Synonym(s):

Octamethylcyclotetrasiloxane, Octamethyltetrasiloxane

Sign Into View Organizational & Contract Pricing


About This Item

Empirical Formula (Hill Notation):
C8H24O4Si4
CAS Number:
Molecular Weight:
296.62
MDL number:
UNSPSC Code:
12352103
EC Index Number:
209-136-7
NACRES:
NA.22

vapor pressure

1.3 hPa ( 20 °C)

Quality Level

Assay

≥98.0% (GC)

form

liquid

autoignition temp.

400 °C

potency

>2000 mg/kg LD50, oral (Rat)
>2400 mg/kg LD50, skin (Rat)

expl. lim.

0.4-11.7 % (v/v)

kinematic viscosity

1.6 cSt(20 °C)

bp

176 °C/1013 hPa

mp

18 °C

transition temp

flash point 51 °C

solubility

<0.001 g/L (Hydrolysis)

density

0.95 g/cm3 at 25 °C

storage temp.

2-30°C

InChI

1S/C8H24O4Si4/c1-13(2)9-14(3,4)11-16(7,8)12-15(5,6)10-13/h1-8H3

InChI key

HMMGMWAXVFQUOA-UHFFFAOYSA-N

Analysis Note

Assay (GC, area%): ≥ 98.0 % (a/a)
Refractive index (n 25°/D): 1.394 - 1.395
Due to its specific melting range the product may be solid, liquid, a solidified melt or a supercooled melt.

Signal Word

Warning

Hazard Statements

Hazard Classifications

Aquatic Acute 1 - Aquatic Chronic 1 - Flam. Liq. 3 - Repr. 2

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

123.8 °F - closed cup

Flash Point(C)

51 °C - closed cup


Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

EU REACH SVHC Candidate List

CAS No.

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?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

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