Shandong Aure Chemical Co., Ltd.

Octamethylcyclotetrasiloxane (D4) CAS 556-67-2

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Octamethylcyclotetrasiloxane (D4) CAS 556-67-2

Synonyms: D4; Cyclotetrasiloxane, octamethyl-; 2,2,4,4,6,6,8,8-Octamethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane; Cyclic dimethylsiloxane tetramer; OMCTS; Volasil 244; NUC Silicone VS 7207; Silicone SF 1173

Shandong Aure Chemical Co., Ltd. is one of the leading suppliers of D4 in China and also one of the manufacturers of this product.

We can provide customized requirements in terms of product purity, packaging specifications, and other aspects.

Please contact us to obtain the latest product information.

Product Details

Product Overview

Octamethylcyclotetrasiloxane (D4) is a cyclic siloxane compound with the chemical formula [(CH₃)₂SiO]₄. It features four repeating dimethylsiloxane units in a stable ring structure. D4 is typically a **clear, colorless, and odorless volatile silicone fluid**. Its unique blend of low viscosity, high volatility, excellent spreadability, and a non-greasy feel makes it a foundational ingredient in numerous applications, particularly within the personal care sector, as well as a crucial building block in silicone chemistry.


Basic Information of HMDSO

CAS No.:556-67-2
EC No.:209-136-7
Linear Formula:[(CH₃)₂SiO]₄
Molecular Weight:296.62
Appearance:Transparent Liquid
Melting Point:17-18 °C (lit.)
Boiling point:175-176 °C (lit.)
Density:0.956 g/mL at 25 °C (lit.)
Volatility:Highly volatile, evaporates cleanly without leaving residue.
Feel:Imparts a smooth, soft, and non-greasy feel.
Solubility:Excellent spreading characteristics on skin and hair.
Solubility:Immiscible with water but miscible with many organic solvents, including alcohols, esters, and hydrocarbons.
Stability:Chemically inert and thermally stable.
RIDADR:UN 1993 3/PG 3
Chemical Structure: cas-556-67-2.jpg

Applications

Octamethylcyclotetrasiloxane (D4) is a versatile ingredient, widely employed across various sectors due to its unique physical and chemical properties:

  • Personal Care and Cosmetics:

    • Deodorants and Antiperspirants: Acts as a carrier for active ingredients, providing a smooth, dry application and feel.

    • Hair Care: Used in conditioners, styling products, and serums to impart shine, enhance manageability, detangle hair, and reduce drying time without residue.

    • Skin Care: Found in creams, lotions, sunscreens, and makeup removers for its light, non-greasy texture, aiding in spreadability and leaving a silky feel on the skin.

    • Makeup: Improves spread and sensory feel in foundations, mascaras, and other cosmetic formulations.

  • Silicone Synthesis:

    • A critical **monomer for the production of high-molecular-weight linear polydimethylsiloxanes (PDMS)** through ring-opening polymerization. These polymers form the basis of various silicone oils, elastomers, and resins.

    • Used in the synthesis of specialized silicone polymers with tailored properties.

  • Industrial Applications:

    • Specialty Solvent: Functions as a volatile carrier or diluent in specific industrial formulations, including coatings and electronics.

    • Lubricants: Utilized in specialty lubricants where low viscosity and a non-greasy profile are required.

    • Cleaning Products: Component in some dry-cleaning fluids and industrial cleaning agents.


Why Choose Aure Chemical's D4?

Partnering with Aure Chemical for your Octamethylcyclotetrasiloxane (D4) supply offers several advantages:

  • Superior Purity: We provide high-purity D4, essential for consistent performance in your sensitive formulations and polymerization processes.

  • Consistent Quality: Our stringent quality control processes ensure that every batch of D4 meets the highest industry standards.

  • Reliable Supply: With robust manufacturing capabilities and efficient inventory management, we guarantee a stable and timely supply to support your production demands.

  • Dedicated Technical Support: Our team of experts is available to offer comprehensive technical data and assistance, helping you optimize your product formulations.


Packaging, Transportation & Storage Solutions

At Aure Chemical, we understand the critical importance of rigorous packaging, transportation, and storage for chemical products. To ensure the safety and integrity of the products you purchase, and to comply with international and national regulations, we provide the following general guidelines. Please note that each specific product has its own Safety Data Sheet (SDS), which contains the most detailed and authoritative information on packaging, transportation, and storage. We strongly advise you to consult and strictly adhere to the SDS for the respective product.

I. Packaging SolutionsII. Transportation SolutionsIII. Storage Solutions

We utilize various UN (United Nations) certified packaging containers based on the chemical nature, hazard class, and transportation requirements of our products. Common packaging types include, but are not limited to:

  • Steel Drums: Suitable for a wide range of liquid and solid products, especially flammable liquids.

  • Plastic Drums/Jerricans: Primarily used for corrosive liquids like acids and bases, or substances incompatible with metal.

  • Composite Drums: Combine the corrosion resistance of a plastic inner liner with the strength of a steel or fiber outer shell.

  • IBCs (Intermediate Bulk Containers): Often referred to as "Tote Bins" or "Cubic Tanks," these are used for larger volumes of liquid or solid dangerous goods, offering efficient storage and transport solutions.

  • Lined Bags or Fibre Drums: Primarily used for powdered or granular solids.

  • Glass Bottles: Typically used as inner packaging for small quantities of high-purity or specialized chemicals, requiring additional absorbent material and sturdy outer packaging (e.g., wooden crates, fiberboard boxes).

  • Steel Cylinders: Specifically designed and constructed as pressure vessels for the storage and transport of compressed, liquefied, or dissolved gases. Available in various capacities and pressure ratings, they are built to withstand high internal pressures and ensure the safe containment of gaseous substances.

All packaging undergoes stringent testing and complies with UN packaging performance levels to ensure product safety under normal transport conditions.

We strictly adhere to international and regional regulations for the transport of dangerous goods, ensuring full compliance and safety from our facility to your delivery point.

  • Sea Freight (IMDG Code): We strictly comply with the International Maritime Dangerous Goods (IMDG) Code, using UN-certified containers and ensuring proper dangerous goods declaration, marking, and stowage.

  • Air Freight (IATA DGR): We follow the International Air Transport Association (IATA) Dangerous Goods Regulations, which impose the strictest requirements for packaging, labeling, documentation, and quantity limitations.

  • Road/Rail Transport (ADR/RID & Local Regulations): We comply with the European Agreement concerning the International Carriage of Dangerous Goods by Road (ADR), the Regulations concerning the International Carriage of Dangerous Goods by Rail (RID), and specific national/regional regulations to ensure safe land transport.

Regardless of the transport mode, we will provide the following essential documentation:

  • Safety Data Sheet (SDS/MSDS): Provides product hazard information, safe handling guidelines, emergency measures, etc.

  • Dangerous Goods Declaration (DGD): Detailed information on dangerous goods, packing group, UN number, etc., for carriers and relevant authorities.

  • Other Necessary Certifications or Documents: Such as Certificates of Analysis (COA).

Upon receiving your shipment, please carefully verify the integrity of the packaging and the label information.

Proper storage is crucial for maintaining product quality and ensuring operational safety. The following are general storage principles:

  • Dedicated Areas: Dangerous chemicals should be stored in designated warehouses or areas that meet safety standards, away from residential zones and densely populated areas.

  • Segregated Storage: Strictly classify and segregate products according to their hazard class to prevent incompatible substances from being stored together and causing dangerous reactions (e.g., acids and bases separated, flammables away from oxidizers).

  • Good Ventilation: Storage areas should maintain good natural or forced ventilation to prevent the accumulation of hazardous gases or vapors.

  • Temperature & Humidity Control: Control the temperature and humidity of the storage environment according to the recommendations in the SDS. Avoid direct sunlight and extreme temperatures.

  • Fire and Explosion Prevention: Storage areas for flammable and explosive products should be equipped with adequate fire-fighting equipment, prohibit open flames, and ensure electrical equipment meets explosion-proof standards.

  • Clear Labeling: All storage containers and areas should have clear, conspicuous hazard labels and warning signs.

  • Spill Response: Storage areas should be equipped with appropriate spill response equipment and materials, and personnel should be familiar with emergency procedures.

  • Regular Inspections: Periodically inspect the integrity of storage containers to ensure no leaks or damage, and verify label information.

  • Away from Food and Drinking Water: Avoid cross-contamination.

Should you have any questions regarding the packaging, transportation, or storage of specific products, or require a customized solution, please do not hesitate to contact us.

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