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Cyclopentasiloxane

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Decamethylcyclopentasiloxane CAS 541-02-6

2,2,4,4,6,6,8,8,10,10-Decamethyl-1,3,5,7,9,2,4,6,8,10-pentoxapentasilecane CAS 541-02-6

Name:    Decamethylcyclopentasiloxane
Synonyms:    2,2,4,4,6,6,8,8,10,10-Decamethyl-1,3,5,7,9,2,4,6,8,10-pentaoxapentasilecane;CD3770;cyclicdimethylsiloxanepentamer;Cyclopentasiloxane, decamethyl-;D3770;Decamethylcylopentasiloxane;siliconsf1202;unioncarbide7158siliconefluid
CAS:    541-02-6
MF:    C10H30O5Si5
MW:    370.77
EINECS:    208-764-9
Product Categories:    Siloxanes;Silicone Series;Organics;Si (Classes of Silicon Compounds);Si-O Compounds;Organometallic Reagents;-;Organosilicon;Heterocycles;Intermediates & Fine Chemicals;Pharmaceuticals
Mol File:    541-02-6.mol
Decamethylcyclopentasiloxane Structure
Decamethylcyclopentasiloxane Chemical Properties
Melting point     -44°C
Boiling point     90 °C10 mm Hg(lit.)
density     0.958 g/mL at 25 °C(lit.)
refractive index     n20/D 1.396(lit.)
Fp     162 °F
storage temp.     Store below +30°C.
solubility     <0.0001g/l (calculated)
form     Liquid
Specific Gravity    0.959
color     Colorless
explosive limit    0.52-7%(V)
Water Solubility     Immiscible with water.
Merck     14,2848
BRN     1800166

 Decamethylcyclopentasiloxane (D5) is an organosilicon compound with the formula [(CH3)2SiO]5. It is a colorless and odorless liquid that is slightly volatile. The compound is classified as a cyclomethicone. Such fluids are commonly used in cosmetics, such as deodorants, sunblocks, hair sprays and skin care products. It is becoming more common in hair conditioners, as it makes the hair easier to brush without breakage. It is also used as part of silicone based personal lubricants. D5 is considered an emollient. In Canada, among the volume used in consumer products approximately 70% were for antiperspirants and 20% for hair care products.
Name     Decamethylcyclopentasiloxane
Synonyms     

Cyclopentasiloxane, decamethyl-; DecaMethylcyclopentasiloxane; 2,2,4,4,6,6,8,8,10,10-decamethyl-1,3,5,7,9,2,4,6,8,10-pentaoxapentasilecane; D5 Cyclomethicone;
CAS No.     541-02-6
Molecular Formula     C10H30O5Si5
Molecular Weight     370.77000
PSA     46.15000
LogP     3.59200
Properties
Appearance & Physical State     liquid
Density     0.958
Boiling Point     90ºC (10 mmHg)
Melting Point     -44ºC
Flash Point     162 °F
Refractive Index     1.396
Stability     Stable. Incompatible with strong oxidizing agents.
Safety Info
RTECS     GY5945200
Safety Statements     S23-S24/25
HS Code     29310095

Stability:    Stable. Incompatible with strong oxidizing agents.
InChIKey    XMSXQFUHVRWGNA-UHFFFAOYSA-N
CAS DataBase Reference    541-02-6(CAS DataBase Reference)
NIST Chemistry Reference    Decamethylcyclopentasiloxane(541-02-6)
EPA Substance Registry System    Cyclopentasiloxane, decamethyl-(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)
MSDS Information
Provider    Language
2,2,4,4,6,6,8,8,10,10-Decamethyl-1,3,5,7,9,2,4,6,8,10-pentoxapentasilecane     English
SigmaAldrich     English
ALFA     English
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    Intermediate in the manufacture of high mol wt siloxane polymers. Carrier ingredient in personal care products; dry cleaning solvent.
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.
Decamethylcyclopentasiloxane Preparation Products And Raw materials
Tag:Decamethylcyclopentasiloxane(541-02-6)