DECAMETHYLPENTACYCLOSILOXANE

Decamethylpentacyclosiloxane is a colorless, odorless liquid that evaporates quickly from the skin, making it ideal for use in quick-drying cosmetics like antiperspirants and hair sprays.
The silicone-based compound provides a silky and smooth feel when applied to skin and hair, enhancing the texture and spreadability of cosmetic products.
Although Decamethylpentacyclosiloxane evaporates rather than being absorbed into the skin, it helps to seal in moisture and protects the skin from allergens and bacteria.

CAS Number: 541-02-6
EC Number: 208-764-9
Chemical Formula: [(CH3)2SiO]5
Molecular Weight: 370.77

Synonyms: D5, Pentamethylcyclopentasiloxane, Decamethylcyclopentasiloxane, Cyclomethicone-5, Cyclopolysiloxane, Dimethylsiloxane pentamer, Pentacyclomethicone, Pentasiloxane, Siloxane D5, Cyclotetrasiloxane, Decamethylcyclohexasiloxane, Cyclohexasiloxane, Cyclopentasiloxane Mixture, Decamethylcyclopentasiloxane Mixture, Dimethyl siloxane pentamer, Siloxanes and Silicones, di-Me pentamer, Siloxanes and Silicones, pentamethyl, Siloxanes and Silicones, pentamethylcyclopentasiloxanes, Cyclic Dimethylpolysiloxane, Decamethyl Cyclopentasiloxane, Methicone, Pentamer, Pentasilanecyclomethane, Pentasioxane, Pentasil, Siloxane, Pentamer, Pentamethyl-cyclopentasiloxane, Pentamethyl-p-rosan, Pentamethyl-1,3,5,7-tetraoxacyclooctane, Pentamethylpentacyclopentasiloxane, Pentamethylpentacyclopentasiloxane, Pentamethyltetrasiloxane, Pentasilicon, Tetramethyl-cyclotetrasiloxane, Cyclomethicones, Cyclosiloxanes, D4-D20, Dimethicone Cyclomethicone, Polydimethylcyclosiloxanes, D5 silicone, Pentamethylcyclopolysiloxane, Siloxane polymer, Siloxanes, Methicone, Decamethyltetrasiloxane, Pentacyclopolysiloxane, 1,1,1,3,5,5,5-heptamethyltrisiloxane, D5 siloxane, Dimethylsiloxanes pentamer, D5 compound, Dodecamethylcyclohexasiloxane, Pentamethylcyclopolysiloxane, Pentamethylcyclotetrasiloxane, Siloxane D5 polymer, Siloxanes and Silicones, di-Me pentamer, Siloxanes and Silicones, pentamethyl, Siloxanes and Silicones, pentamethylcyclopentasiloxanes

Decamethylpentacyclosiloxane is an organosilicon compound with the formula [(CH3)2SiO]5.
Decamethylpentacyclosiloxane is a colorless and odorless liquid that is slightly volatile.

Decamethylpentacyclosiloxane is classified as a cyclomethicone.
Decamethylpentacyclosiloxane is colorless, odorless, non-greasy, and water-thin.

Decamethylpentacyclosiloxane doesn’t get absorbed into the skin.
Rather, Decamethylpentacyclosiloxane evaporates quickly away from it.

This property makes Decamethylpentacyclosiloxane a useful ingredient in cosmetic products that need to dry quickly, like antiperspirants and hair sprays.
Decamethylpentacyclosiloxane also has lubricating properties.
This gives a slippery and silky feeling when applied to the skin and hair and allows Decamethylpentacyclosiloxane to spread more easily.

Decamethylpentacyclosiloxane sometimes appears on a label as Cyclopentasiloxane or D5.
Decamethylpentacyclosiloxane is a high molecular weight, hydrophobic silicone fluid with a low vapor pressure.

Decamethylpentacyclosiloxane has a high resistance to hydrolysis by water and acids.
Decamethylpentacyclosiloxane may also be put under the broader category name of cyclomethicone

Decamethylpentacyclosiloxane’s different from another siloxane known as dimethicone or polydimethylsiloxane (PDMS).
Decamethylpentacyclosiloxane (cyclomethicone) is a silicon-based cyclic compound.

As if the name Decamethylpentacyclosiloxane wasn't hard enough to say, we should point out that it's also known as Cyclopentasiloxane.
But no need to stress—you can keep Decamethylpentacyclosiloxane simple and call it D5, its other commonly used name, for short.

Decamethylpentacyclosiloxane functions primarily as an emollient, comes in a colorless and odorless liquid form, and is found in a vast array of beauty products from skincare to haircare.
Decamethylpentacyclosiloxane is an ingredient used in cosmetics and many other products.

Decamethylpentacyclosiloxane is a silicone.
Also known as Cyclopentasiloxane or D5, thankfully, Decamethylpentacyclosiloxane’s often referred to as simply, D5.

Decamethylpentacyclosiloxane’s colourless, odourless and is always found in liquid form.
Decamethylpentacyclosiloxane is a common ingredient in skincare and body care products, used to improve the texture of formulations, helping products to glide on smoothly and evenly.

Decamethylpentacyclosiloxane also has the added benefit of acting as a protective barrier to the skin, protecting the skin from moisture loss, allergens, and bacteria.
Decamethylpentacyclosiloxane is part of a family of small silicones called cyclomethicones.

Cyclomethicones are clear, odorless liquids utilized in skincare products to give your skincare a smooth texture that allows the product’s key ingredients to be delivered evenly to the skin.
Decamethylpentacyclosiloxane is one of the most common ingredients used in personal care products today.

Synthetically manufactured, Decamethylpentacyclosiloxane is a silicone derivative that carries a variety of skin and hair applications, such as hair spray and sunscreens.
With a broader focus on uses in styling, Decamethylpentacyclosiloxane is finding more and more popularity in hair care products, and those where a microscopic protective layer may benefit the skin.

Cyclomethicones are sometimes also called cyclosiloxanes; they are different names for the same class of chemicals.
The two most commonly used cyclomethicones are Decamethylpentacyclosiloxane and Decamethylpentacyclosiloxane; you may have seen these ingredients somewhere near the bottom of your product’s ingredients list.

Decamethylpentacyclosiloxane has a ring-shaped structure that makes it more volatile or less stable.
This instability allows Decamethylpentacyclosiloxane to evaporate when applied to your skin—making it an excellent ingredient for products that need to go on smoothly but not remain sticky after application.

As all the Decamethylpentacyclosiloxane eventually evaporates from the surface of the skin, Decamethylpentacyclosiloxane leaves behind the other key components in the product to work their magic.
This action of evaporation makes Decamethylpentacyclosiloxane an excellent carrier ingredient.
Decamethylpentacyclosiloxane appears in medical implants, sealants, lubricants, and windshield coatings.

Decamethylpentacyclosiloxane is colorless, odorless, non-greasy, and watery.
Decamethylpentacyclosiloxane is not absorbed through the skin but evaporates quickly.

This property makes Decamethylpentacyclosiloxane a useful ingredient in many quick-drying cosmetics such as antiperspirants and hair sprays.
Decamethylpentacyclosiloxane also has lubricating properties.

This provides a smooth and silky feel when applied to skin and hair, and makes Decamethylpentacyclosiloxane easier to spread.
Decamethylpentacyclosiloxane works as an emollient, lubricant, and solvent and gives cosmetic and skin care products a very silky texture.

Decamethylpentacyclosiloxane also seals in hydration and dissolves heavier ingredients.
Due to these properties, anyone looking to soften their skin with a lightweight product can use this compound.
Decamethylpentacyclosiloxane can be found in various skin and hair care products and is considered safe to use.

One of the main advantages of Decamethylpentacyclosiloxane is that it aids in the drying and spreading of skin and hair products while also providing a smooth feel to your skin and hair without weighing them down.
According to research, Decamethylpentacyclosiloxane is not absorbed into the skin at high enough levels to cause harm, so there is no need to worry about it messing with your hormones.

Though the use of Decamethylpentacyclosiloxane in skin care has been the subject of some debate, scientists believe that it is safe for topical use.
Decamethylpentacyclosiloxane is a type of silicone commonly used in cosmetics.
Decamethylpentacyclosiloxane is categorized as a volatile silicone, but it’s important to distinguish that the word volatile here doesn’t mean irritating to skin.

Instead, Decamethylpentacyclosiloxane means this kind of silicone evaporates quickly from skin’s surface, which is one of the advantages of formulating with Decamethylpentacyclosiloxane as it is able to evenly distribute other key ingredients without leaving a heavy or occlusive feel.
Decamethylpentacyclosiloxane also means you don’t have to worry about Decamethylpentacyclosiloxane “trapping” or “congesting” skin (as is also true for other silicones).

The velvety film left behind is permeable, meaning Decamethylpentacyclosiloxane doesn’t suffocate skin.
While Decamethylpentacyclosiloxane is typically the name that you’ll see on a product’s ingredient list, Decamethylpentacyclosiloxane also goes by cyclomethicone D5 or just D5 in research literature.

According to the Cosmetic Ingredient Review Expert Panel’s assessment (as reported in 2011), Decamethylpentacyclosiloxane can safely be used in up to 93% in personal care products.
Decamethylpentacyclosiloxane does not pose a health risk to skin as used in cosmetic products.

Decamethylpentacyclosiloxane is essentially a silicon-based compound that is a part of a larger category known as cyclomethicone.

Decamethylpentacyclosiloxane is a colorless, odorless liquid with a low viscosity.
Decamethylpentacyclosiloxane is actually a type of silicone that’s regularly used in skincare and haircare products.

Decamethylpentacyclosiloxane is specifically part of a small silicone group: cyclomethicones.
According to clinical studies and reports, cyclomethicones have been deemed safe for cosmetic ingredient uses as they are not significantly absorbed through the skin.

Decamethylpentacyclosiloxane, a synthetic substance, is made up of silicone and oxygen.
Decamethylpentacyclosiloxane is a volatile polydimethyl cyclosiloxanes, mainly by decamethyl Decamethylpentacyclosiloxane composition.

Decamethylpentacyclosiloxane is clear, odorless, basically odorless, non-greasy.
Decamethylpentacyclosiloxane is a volatile silicone also known as Silicone D5.

Decamethylpentacyclosiloxane does not accumulate on the hair or the skin and allows consumers to benefit from the advantage of this family without its drawbacks: soft feel, non-greasy and lubricating properties.
Nevertheless, Decamethylpentacyclosiloxane has been closely monitored for several years and its release into the wild remains a concern.

Decamethylpentacyclosiloxane is classified as vPvB (very persistent and very bioaccumulation).
Decamethylpentacyclosiloxane is a staple ingredient used in cosmetics.
The chemical formula for Decamethylpentacyclosiloxane is C10H30O5Si5.

Decamethylpentacyclosiloxane is a non-greasy silicone that is colorless, odorless, and water-thin.
Decamethylpentacyclosiloxane is a volatile polydimethyl cyclosiloxanes, mainly by decamethyl Decamethylpentacyclosiloxane composition.

Decamethylpentacyclosiloxane is clear, odorless, basically odorless, non-greasy.
Decamethylpentacyclosiloxane is an ingredient found in hundreds of personal care products.

Decamethylpentacyclosiloxane improves the texture of formulations, giving them a smooth and silky feel.
Decamethylpentacyclosiloxane is part of the cyclomethicone family of silicones.

Decamethylpentacyclosiloxane is a clear, odorless, thin liquid that a person may find in many skincare and cosmetic products.
Although Decamethylpentacyclosiloxane offers minimal benefits to the skin, manufacturers add Decamethylpentacyclosiloxane to a vast range of products to improve their feel, delivery, and function.

Uses of Decamethylpentacyclosiloxane:
Decamethylpentacyclosiloxane is a silicone regularly used in cosmetic products.
Decamethylpentacyclosiloxane’s commonly found in medical implants, sealants, lubricants, and windshield coatings.
Decamethylpentacyclosiloxane is known for being able to evaporate and dry quickly.

Silicones are also known to repel water and glide easily.
This is why they are commonly used as ingredients in lubricants and sealants.
They are also known to form a protective barrier on the skin and hair.

This can help you detangle your hair, prevent breakage, and reduce frizz.
Decamethylpentacyclosiloxane can be found in a wide range of personal care products.
Decamethylpentacyclosiloxane is used hair spray, sunscreen, antiperspirant, deodorant, hair conditioner, shampoo, hair detangling products, waterproof mascara, foundation, eyeliner, concealer, moisturizer with SPF, eye shadow hairstyling gel and lotion lipstick.

Decamethylpentacyclosiloxane in C+C Serum as part of the water-free base that spreads evenly over the skin and then evaporates away, leaving behind just the active antioxidants.
Decamethylpentacyclosiloxane (say that five times fast) is a commonly used silicone - that gives hair a silky feel, and guards your hair from moisture getting in and causing frizz.

It’s big claim to fame is that Decamethylpentacyclosiloxane’s lightweight and is absorbed into the hair quickly, but washes out just as fast.
Often used in conditioners, Decamethylpentacyclosiloxane can be applied in your hair before using a wet brush to allow you to detangle without catching any knots.
Unlike heavier silicone products, Decamethylpentacyclosiloxane is neutrally charged and does not bind to hair.

Regularly paired with dimethicone, Decamethylpentacyclosiloxane is also a high performing ingredient because it has the ability to smooth out heavier silicones that would otherwise be hard to distribute.
We love Decamethylpentacyclosiloxane because it prevents damage by locking moisture in and keeping water out.

Decamethylpentacyclosiloxane is used as a reactive diluent in the synthesis of compounds that have an unsaturated bond.
Decamethylpentacyclosiloxane can also be used as a film-forming polymer in cosmetics and personal care products, such as hair sprays, body lotions, and antiperspirants.

Decamethylpentacyclosiloxane is used in the synthesis of butanediol, which is then converted into other materials like polyester or polysiloxanes.
Decamethylpentacyclosiloxane is used in dermal exposure and inhalation toxicity study.
Such fluids are commonly used in cosmetics, such as deodorants, sunblocks, hair sprays and skin care products.

Decamethylpentacyclosiloxane is becoming more common in hair conditioners, as Decamethylpentacyclosiloxane makes the hair easier to brush without breakage.
Decamethylpentacyclosiloxane is also used as part of silicone based personal lubricants.

Decamethylpentacyclosiloxane is considered an emollient.
Such fluids are commonly used in cosmetics, such as deodorants, sunblocks, hair sprays and skin care products.

Decamethylpentacyclosiloxane is becoming more common in hair conditioners, as it makes the hair easier to brush without breakage.
Decamethylpentacyclosiloxane is also used as part of silicone-based personal lubricants.

Decamethylpentacyclosiloxane is considered an emollient.
In Canada, among the volume used in consumer products approximately 70% were for antiperspirants and 20% for hair care products.
10,000–100,000 tonnes per year of Decamethylpentacyclosiloxane is manufactured and/or imported in the European Economic Area.

Atmospheric emissions of Decamethylpentacyclosiloxane in the Northern Hemisphere were estimated to 30,000 tonnes per year.
Decamethylpentacyclosiloxane’s also used as a sealant to protect the skin against moisture loss and as a lubricant as Decamethylpentacyclosiloxane helps the skin and hair absorb heavier, larger molecular weight ingredients.

Plus Decamethylpentacyclosiloxane gives products a silky, smooth feel that then have a nice feel to the skin.
Decamethylpentacyclosiloxane is one such silicone also used in hair or skin care products.
In fact, Decamethylpentacyclosiloxane is used in wash-off cosmetics and is used in personal care products today across many beauty brands.

According to a Cosmetic Ingredient Review (CIR) Panel report, the most common uses of Decamethylpentacyclosiloxane include: Bath Products, Eye makeup including eye shadows, mascaras, eye makeup removers, Colognes and toilet waters, Hair Conditioners, Hair Colors (check out the Permanent Hair Color Rating List e-book for colors that don’t have it), Lipsticks, Foundations, Deodorants, Skin Cleansing Creams, Body Lotions, Hand Lotions, Moisturizers, and Suntan products.

Decamethylpentacyclosiloxane is widely used in cosmetics and body care products
Decamethylpentacyclosiloxane has good compatibility with most alcohols and other cosmetic solvents.

Decamethylpentacyclosiloxane is often included in skin care formulations to improve the silky-smooth spreadabilty and sensorial feel of a product.
Decamethylpentacyclosiloxane is a lightweight silicone, whose appearance as a raw material is a clear, odorless fluid.

Decamethylpentacyclosiloxane also functions as a solvent to help improve the dispersion of cosmetic ingredients in a solution and improve delivery of key ingredients.
Decamethylpentacyclosiloxane also shows up in hair care formulas (particularly conditioners and hair serums) where it lends a softening + smoothing feel and makes hair remarkably shiny.

Decamethylpentacyclosiloxane gives a very silky and slippery feel when applied to the skin and hair and is mainly used in products such as antiperspirants, hair conditioners, sunblocks, and other skincare products.
The key function of Decamethylpentacyclosiloxane is to work as an emollient.

Decamethylpentacyclosiloxane is available in liquid form, and it is mainly used as a skin and hair conditioning agent.
Decamethylpentacyclosiloxane’s also commonly used in things like sealants, sunscreen, windshield coatings, medical implants, and antiperspirants.
Hair spray, sunscreen, antiperspirant, deodorant, mascara, foundation, and makeup – these are some of the products that use Decamethylpentacyclosiloxane, aka D5.

Decamethylpentacyclosiloxane helps create that soft, silky, and moist feeling on your hair or skin.
Sometimes, elements like hydrogen and carbon are also used.
They are all natural substances, but Decamethylpentacyclosiloxane undergoes chemical processing before it is used in cosmetic and skincare products.

Decamethylpentacyclosiloxane widely used in cosmetics and body care products, Such as skin care, sunscreen,makeup, hair conditioning products, good compatibility with most of the alcohol and other cosmetic solvents.
Decamethylpentacyclosiloxane is directly used as the carrier, the main raw material, also can be used as an additive.
Decamethylpentacyclosiloxane is used in aqueous systems by the method of Emulsification.

Decamethylpentacyclosiloxane gets quickly evaporated from the skin rather than getting absorbed - making it a brilliant ingredient to be used in products that need to dry fast, like antiperspirants and hair sprays.
Further, Decamethylpentacyclosiloxane also has lubricating properties and feels silky smooth when applied to hair and skin.

Because of its many enriching properties, Decamethylpentacyclosiloxane silicone is a common ingredient used in a variety of hair and skin care products.
Decamethylpentacyclosiloxane helps the products spread more evenly and dry quickly, thus providing all the benefits without weighing the skin or hair down.
Decamethylpentacyclosiloxane also gives cosmetic products a silky texture.

Skin care:
The hydrating properties of Decamethylpentacyclosiloxane are great for the skin as it traps moisture, making the skin smooth and soft.
Decamethylpentacyclosiloxane is used in lightweight products as it does not penetrate the skin but rather evaporates quickly.
Further, Decamethylpentacyclosiloxane skin care has anti-aging properties and is a great ingredient to be used in lotions

Hair care:
Decamethylpentacyclosiloxane is a great conditioner for hair because of its lubricating properties.
Decamethylpentacyclosiloxane is commonly used in shampoos, hair conditioners, hair sprays, anti-frizz, and hair detangling products.
Decamethylpentacyclosiloxane forms a layer on the hair, protecting and preventing it from damage while also allowing Decamethylpentacyclosiloxane to spread easily and evenly

Cosmetic products:
Decamethylpentacyclosiloxane is used in makeup and makeup removers because it is non-comedogenic and does not block pores
Decamethylpentacyclosiloxane can be frustrating to decipher the long chemical names on the label of your favorite cosmetic products.
Simple ingredients like water and alcohol are easy to recognize.

But lengthy chemical names can leave even the most conscious consumers scratching their heads.
Decamethylpentacyclosiloxane is used in hundreds of cosmetics.

In the past, there was controversy about Decamethylpentacyclosiloxane's potential health and environmental risks.
But the Cosmetic Ingredient Review Expert Panel considers Decamethylpentacyclosiloxane safe to use in cosmetics.

Face illustration:
Decamethylpentacyclosiloxane is mainly used as an emollient to help smooth out beauty product creams and gels.
Decamethylpentacyclosiloxane can also create a protective barrier on your skin once applied, which may help keep your skin safe from toxins, bacteria, germs, pollution, and other yuckiness.

Decamethylpentacyclosiloxane is compatible with many cosmetic ingredients, even some waxes, fatty acids, fatty acid esters and non volatile silicones.
Decamethylpentacyclosiloxane features good solubility in most anhydrous alcohols and in many cosmetic solvents.

1. Anti-perspirants, deodorant: 3-10%;
2. Hair Care: 1-5%;
3. Skin Care: 3-10%;
4. Perfume: 0.5-3%.

Functions of Decamethylpentacyclosiloxane:

Emollient:
Softens and softens the skin

Hair conditioner:
Leaves hair easy to comb, supple, soft and shiny and/or gives volume, lightness and shine

Skin conditioning agent:
Keeps the skin in good condition

Solvent:
Dissolves other substances

Functions In Cosmetic:

Hair Conditioning:
Leaves the hair easy to comb, supple, soft and shiny and / or imparts volume

Skin Conditioning:
Maintains the skin in good condition

Skin Conditioning - Emollient:
Softens and smoothens the skin

Solvent:
Dissolves other substances

Advantages of Decamethylpentacyclosiloxane:
Volatile carrier
Compatible with a wide range of cosmetic ingredients
Low surface tension
Imparts soft silky feel to the skin
Excellent spreading
Leaves no oily residue or build up
Detackification
Non-greasy

Benefits of Decamethylpentacyclosiloxane:
Decamethylpentacyclosiloxane has a silky and slippery texture that creates a protective barrier on the skin and hair.
Decamethylpentacyclosiloxane in hair products may help prevent breakage, detangle, and reduce frizz.

Decamethylpentacyclosiloxane offers minimal benefits to the skin.
Companies primarily add Decamethylpentacyclosiloxane to skincare products to improve their sensory feel and texture.

However, Decamethylpentacyclosiloxane has other properties that boost the effectiveness of formulations.
Although Decamethylpentacyclosiloxane has minimal benefits specific to the skin, Decamethylpentacyclosiloxane does have notable sensory properties and also helps in how the product functions.

Lightweight carrier:
Decamethylpentacyclosiloxane is an effective carrier, or solvent, due to its ability to evaporate quickly.
Decamethylpentacyclosiloxane helps to evenly coat the skin with active ingredients without leaving a heavy, sticky, or tacky residue after application.
Decamethylpentacyclosiloxane leaves the active ingredients to work from the skin’s surface as they evaporate.

Forms a protective barrier:
Decamethylpentacyclosiloxane also acts as an emollient that adds a protective barrier to the skin.
However, Decamethylpentacyclosiloxane evaporates quickly and does not stay on the skin surface, so Decamethylpentacyclosiloxane does not leave a sticky feel.
Decamethylpentacyclosiloxane leaves a protective yet breathable layer on the skin.

Facilitates a smooth application and delivery:
Decamethylpentacyclosiloxane helps make formulations feel smooth and silky for a smooth and easy application.
Decamethylpentacyclosiloxane allows products to spread evenly over the skin so that all areas of the skin receive key ingredients from a product.

Improves the appearance of scars:
Many silicone gel preparations use Decamethylpentacyclosiloxane as a carrier to deliver other silicone ingredients to the skin.

Inexpensive:
Decamethylpentacyclosiloxane is generally less costly than other silicone ingredients.
Therefore, a person may find that products containing Decamethylpentacyclosiloxane are more affordable.

Spreads easily:
Silicones are known for their slippery glide and smooth feel.
Decamethylpentacyclosiloxane gives products a silky smooth texture that applies easily and leaves a non-greasy finish.

Is inexpensive:
Because Decamethylpentacyclosiloxane is cheaper than other similar silicones, your products that contain Decamethylpentacyclosiloxane will also be more affordable as a result.

Evaporates quickly:
Decamethylpentacyclosiloxane is volatile, so it's often included in product formulations because Decamethylpentacyclosiloxane allows the products to dry faster.

Is lightweight:
Some silicones are heavy, but this one is particularly lightweight and used when a lighter feel is desired.
This trait is especially helpful in haircare products so as not to weigh down the hair strands.

Disperses heavier ingredients:
Decamethylpentacyclosiloxane works well when combined with heavier oils or silicones because it makes them easier to spread and provides a nice feel to the skin.

Seals hydration:
Decamethylpentacyclosiloxane forms a seal or barrier on the skin.
This barrier protects against transepidermal water loss (TEWL), which can lead to inflammatory conditions.

Decamethylpentacyclosiloxane may also work similarly when used on the hair by coating the hair shaft.
The molecular structure of silicones (large molecules with wide spaces between each molecule) means that the barrier they form is permeable, preventing the skin from "suffocating".

Properties of Decamethylpentacyclosiloxane:

Chemical Structure:
Decamethylpentacyclosiloxane is a cyclic silicone with the chemical formula C10H30O5Si5.

Appearance:
Decamethylpentacyclosiloxane is typically a clear, odorless, and non-greasy liquid.

Volatility:
Decamethylpentacyclosiloxane is a volatile silicone, meaning it evaporates quickly when applied to the skin or hair.

Scientific Facts
The cyclomethicone family of ingredients creates many positive qualities associated with personal care products: luxuriant texture, silky smoothness, luster and smooth applications.
These ingredients help make personal care products non-stinging and non-irritating.
For example, cyclomethicones reduce the white residue and tacky feel of antiperspirants in deodorants and help “long-lasting” makeup retain its color and luster.

With cyclomethicones, shampoos and conditioners shine better, and sunscreen products obtain stronger SPF.
They also provide smooth and even application of makeup, lotions, sunscreens and cleansers.

Handling And Storage of Decamethylpentacyclosiloxane:

Precautions for safe handling:

Hygiene measures:
Change contaminated clothing.
Wash hands after working with substance.

Conditions for safe storage, including any incompatibilities:

Storage conditions:
Tightly closed.

Stability And Reactivity of Decamethylpentacyclosiloxane:

Chemical stability:
Decamethylpentacyclosiloxane is chemically stable under standard ambient conditions (room temperature).

Incompatible materials:
No data available

First Aid Measures of Decamethylpentacyclosiloxane:

If inhaled:

After inhalation:
Fresh air.

In case of skin contact:
Take off immediately all contaminated clothing.
Rinse skin with water/ shower.

In case of eye contact:

After eye contact:
Rinse out with plenty of water.
Remove contact lenses.

If swallowed:

After swallowing:
Make victim drink water (two glasses at most).
Consult doctor if feeling unwell.

Indication of any immediate medical attention and special treatment needed:
No data available

Fire Fighting Measures of Decamethylpentacyclosiloxane:

Suitable extinguishing media:
Carbon dioxide (CO2)
Foam
Dry powder

Unsuitable extinguishing media:
For this substance/mixture no limitations of extinguishing agents are given

Further information:
Prevent fire extinguishing water from contaminating surface water or the ground water system.

Accidental Release Measures of Decamethylpentacyclosiloxane:

Environmental precautions:
Do not let product enter drains.

Methods and materials for containment and cleaning up:
Cover drains.
Collect, bind, and pump off spills.

Observe possible material restrictions.
Take up with liquid-absorbent material.

Dispose of properly.
Clean up affected area.

Exposure Controls/Personal Protection of Decamethylpentacyclosiloxane:

Personal protective equipment:

Eye/face protection:
Use equipment for eye protection.
Safety glasses

Skin protection:

Full contact:
Material: Nitrile rubber
Minimum layer thickness: 0,4 mm
Break through time: 480 min

Splash contact:
Material: Nitrile rubber
Minimum layer thickness: 0,11 mm
Break through time: 30 min

Respiratory protection:
Recommended Filter type: Filter A (acc. to DIN 3181)

Control of environmental exposure:
Do not let product enter drains.

Identifiers of Decamethylpentacyclosiloxane:
IUPAC Name: Cyclopentasiloxane
CAS Number: 541-02-6
Molecular Formula: C10H30O5Si5
PubChem CID: 10944
EC Number: 208-764-9
UNII: 0THT5PCI0R
SMILES: C[Si](C1)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1
InChI: InChI=1S/C10H30O5Si5/c1-16(2)6-11-17(3,4)7-12-18(5,8-13-19(9,10)14-20(16)15-20)10/h1-10H3
InChI Key: BKJHZBKCCBRZMX-UHFFFAOYSA-N

Properties of Decamethylpentacyclosiloxane:
Melting point : -44°C
Boiling point: 210 °C
Refractive index: n20/D 1.396(lit.)
Density : 0.958 g/mL at 25 °C(lit.)
Appearance: Colorless to transparent liquid
Specific gravity at 25°C (77°F) : 0.95
Chroma, Hazen: <10
Viscosity 25 ℃, mm2 / s: 3.8-4.2
Refractive index at 25°C (77°F) : 1.397
Flash point (closed cup), ℃: 80
Cyclotetrasiloxane (D4) content, %: < 0.1
Decamethylpentacyclosiloxane(D5) content, %: ≥ 99.0
Soluble: ethyl, butyl acetate, ethanol, isopropanol.
Flash point: 76°C
HS Code: 29310095
Log P: 3.59200
MDL: MFCD00046966
PSA: 46.15
Refractive Index: 1.396
Risk Statements: R36/37/38
RTECS: GY5945200
Safety Statements: S23-S24/25

Stability: Stable.
Incompatible with strong oxidizing agents.
Merck : 14,2848
Molecular Weight: 370.77
Molecular Formula: C10H30O5Si5
Boiling Point: 101 °C
Melting Point: -44ºC
Flash Point: 162 °F
Purity: >99.0%(GC)
Density: 0.958
Solubility: Insoluble in water.
Appearance: Liquid
Stability: Stable.
Incompatible with strong oxidizing agents.
Chemical formula: [(CH3)2SiO]5
Molar mass: 370.770 g·mol−1
Appearance: Colourless liquid
Density: 0.958 g/cm3
Melting point: −47 °C; −53 °F; 226 K
Boiling point: 210 °C (410 °F; 483 K)
Solubility in water: 17.03±0.72 ppb (23 °C)

Vapor pressure: 0,3 hPa at 25 °C, 41 hPa at 110,6 °C
Density: 0,958 g/cm3 at 25 °C - lit.
Relative density: 0,96 at 20 °C
Relative vapor density: No data available
Particle characteristics: No data available
Explosive properties: No data available
Oxidizing properties: No data available
Other safety information: No data available
Appearance: Colorless to transparent liquid
Specific gravity at 25°C (77°F) : 0.95
Chroma, Hazen: <10
Viscosity 25 ℃, mm2 / s: 3.8-4.2
Refractive index at 25°C (77°F) : 1.397
Flash point (closed cup), ℃: 80
Cyclotetrasiloxane (D4) content, %: < 0.1
Decamethylpentacyclosiloxane(D5) content, %: ≥ 99.0
Soluble: ethyl, butyl acetate, ethanol, isopropanol.

Specifications of Decamethylpentacyclosiloxane:
Appearance: Clear, colorless liquid
Odor: Odorless
Molecular Weight: 370.77 g/mol
Boiling Point: 210°C (410°F)
Melting Point: -42°C (-44°F)
Density: 0.95 g/cm³ at 25°C
Viscosity: Low viscosity
Refractive Index: 1.396 - 1.398 at 25°C
Flash Point: 76°C (169°F) (closed cup)
Solubility:
Water Solubility: Insoluble in water
Solubility in Organic Solvents: Soluble in common organic solvents like ethanol, isopropanol, and mineral oil
Purity: Typically ≥ 99%