Decamethylcyclopentasiloxane Chemical Properties

Melting point:

-44°C

Boiling point:

90 °C/10 mmHg (lit.)

Density 

0.958 g/mL at 25 °C (lit.)

vapor pressure 

33.2Pa at 25℃

refractive index 

n20/D 1.396(lit.)

Flash point:

162 °F

storage temp. 

2-8°C

solubility 

<0.0001g/l (calculated)

form 

Liquid

color 

Colorless

Specific Gravity

0.959

explosive limit

0.52-7%(V)

Water Solubility 

Immiscible with water.

Hydrolytic Sensitivity

1: no significant reaction with aqueous systems

Merck 

14,2848

BRN 

1800166

Dielectric constant

2.5（20℃）

Stability:

Stable. Incompatible with strong oxidizing agents.

InChIKey

XMSXQFUHVRWGNA-UHFFFAOYSA-N

LogP

8.07 at 24.6℃

CAS DataBase Reference

541-02-6(CAS DataBase Reference)

NIST Chemistry Reference

Decamethylcyclopentasiloxane(541-02-6)

EPA Substance Registry System

Decamethylcyclopentasiloxane (541-02-6)

Safety Information

Hazard Codes 

Xi

Risk Statements 

36/37/38-53

Safety Statements 

23-24/25-36-26

RIDADR 

NA 1993 / PGIII

WGK Germany 

2

RTECS 

GY5945200

TSCA 

Yes

HS Code 

29310095

Hazardous Substances Data

541-02-6(Hazardous Substances Data)

Toxicity

LD50 oral in rat: > 24134mg/kg

MSDS

• Language:English Provider:2,2,4,4,6,6,8,8,10,10-Decamethyl-1,3,5,7,9,2,4,6,8,10-pentoxapentasilecane
• Language:English Provider:SigmaAldrich
• Language:English Provider:ALFA

Decamethylcyclopentasiloxane Usage And Synthesis

Chemical Properties

liquid

Uses

A cyclic volatile methylsiloxane (cVMS) used in cosmetic and personal care products. Used in dermal exposure and inhalation toxicity study.

Uses

cyclopentasiloxane is incorporated into a formulation for its emollient and solvent activity.

Uses

Octamethylcyclotetrasiloxane and decamethylcyclopentasiloxane are major industrial products, which are either marketed as such or used for the production of polydimethylsiloxanes.

Uses

Intermediate in the manufacture of high mol wt siloxane polymers. Carrier ingredient in personal care products; dry cleaning solvent.

Definition

ChEBI: Decamethylcyclopentasiloxane is an organosilicon compound.

General Description

D5 Cyclomethicone is a cyclic siloxane, that has a silicon-oxygen bond in a cyclic arrangement and methyl groups attached with the silicon atom. It is used in the production of some silicon-based polymers that are widely used in various personal care products.
Pharmaceutical secondary standards for application in quality control, provide pharma laboratories and manufacturers with a convenient and cost-effective alternative to the preparation of in-house working standards.

Flammability and Explosibility

Non flammable

Decamethylcyclopentasiloxane(541-02-6)Related Product Information

• Hexamethyldisiloxane
• Octamethylcyclotetrasiloxane
• POLYDIMETHYLSILOXANE
• 1,1,3,3-Tetramethyldisiloxane
• DODECAMETHYLCYCLOHEXASILOXANE
• 1,1,3,3,5,5-hexamethyl-1,3,5-trisilacyclohexane
• POLY(DIMETHYLSILOXANE), HYDROXY TERMINATED
• Poly(dimethylsiloxane)
• Hexamethylcyclotrisiloxane
• LACMOID
• Terphenyl, hydrogenated
• PENTAMETHYLCYCLOPENTASILOXANE
• PENTAVINYLPENTAMETHYLCYCLOPENTASILOXANE
• 1,1,3,3,5,5-HEXAMETHYLTRISILOXANE
• 1,1,3,3,5,5,7,7-OCTAMETHYLTETRASILOXANE
• Decamethylcyclopentasiloxane
• DECAMETHYLCYCLOPENTASILOXANE, [METHYL-14C]-