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Merck
CN

1154809

USP

Cyclomethicone 5

United States Pharmacopeia (USP) Reference Standard

Synonym(s):

Decamethylcyclopentasiloxane

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About This Item

Empirical Formula (Hill Notation):
C10H30O5Si5
CAS Number:
541-02-6
Molecular Weight:
370.77
UNSPSC Code:
41116107
NACRES:
NA.24
PubChem Substance ID:
329749482
MDL number:
MFCD00046966
Beilstein/REAXYS Number:
1800166

Key Documents

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InChI

1S/C10H30O5Si5/c1-16(2)11-17(3,4)13-19(7,8)15-20(9,10)14-18(5,6)12-16/h1-10H3

SMILES string

C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1

InChI key

XMSXQFUHVRWGNA-UHFFFAOYSA-N

grade

pharmaceutical primary standard

API family

cyclomethicone

manufacturer/tradename

USP

refractive index

n20/D 1.396 (lit.)

bp

90 °C/10 mmHg (lit.)

density

0.958 g/mL at 25 °C (lit.)

application(s)

pharmaceutical (small molecule)

format

neat

storage temp.

2-8°C

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General description

This compound is listed in the SVHC (Substances of very high concern) candidate list of ECHA (European Chemicals Agency)
This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the issuing Pharmacopoeia.
For further information and support please go to the website of the issuing Pharmacopoeia.

Application

Cyclomethicone 5 USP reference standard, intended for use in specified quality tests and assays as specified in the USP compendia. Also, for use with USP monograph such as Cyclomethicone

Analysis Note

These products are for test and assay use only. They are not meant for administration to humans or animals and cannot be used to diagnose, treat, or cure diseases of any kind.  ​

Other Notes

Sales restrictions may apply.

Storage Class

10 - Combustible liquids

wgk

WGK 2

flash_point_f

163.4 °F - closed cup

flash_point_c

73 °C - closed cup

signalword

Danger

hcodes

EUH441

Hazard Classifications

PBT - vPvB

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