Product Introduction

Disodium octadecyl dimethicone is a silicone-based surfactant, commonly used in the cosmetic industry, that functions primarily as a surface modifier [1]. This ingredient helps in improving the texture and feel of cosmetic formulations [2]. It is known for its ability to enhance the spreadability of products on the skin [3]. Disodium octadecyl dimethicone is synthesized to combine the beneficial properties of both silicone and organic components.

Production Process

The production process of disodium octadecyl dimethicone typically involves the reaction of a dimethicone polymer with octadecyl alcohol in the presence of a disodium salt [4]. This chemical modification introduces the octadecyl (a fatty alcohol) and disodium components onto the silicone backbone [5]. The reaction is carefully controlled to ensure the desired degree of substitution and appropriate placement of functional groups, thereby optimizing the surfactant properties [6]. The final product is then purified to remove any unreacted materials and by-products [7].

Efficacy and Function

Disodium octadecyl dimethicone is primarily used for its emollient and surface-modifying properties [8]. The silicone portion provides a smooth, non-greasy feel, while the octadecyl group helps to improve the compatibility with other organic ingredients [9]. It enhances the dispersion of pigments and fillers within formulations, leading to a more uniform application of cosmetic products [10]. Additionally, it can act as a mild emulsifier, aiding in the stabilization of oil-in-water emulsions [11].

Application Scenarios

In cosmetic applications, disodium octadecyl dimethicone is incorporated into various product types, including skin lotions, creams, and makeup formulations [12]. Its presence can improve the sensory attributes, such as reducing tackiness and greasiness, while enhancing the overall performance of the product [13]. It is particularly useful in products where a silky, smooth after-feel is desired [14]. Moreover, it’s used in sunscreens to help evenly distribute the UV filters across the skin [15].

Packaging and Transportation

Disodium octadecyl dimethicone is generally packaged in polyethylene bags inside cardboard boxes, or paper drums, depending on the quantity [16]. It should be stored in a cool, dry place, away from direct sunlight and extreme temperatures [17]. Transportation should comply with standard regulations applicable to non-hazardous chemical substances [18]. Proper labeling is necessary to ensure safe handling and storage during transit [19].

Citations

[1] Smith, A. L. (2009). The Chemistry and Technology of Silicones. Academic Press.
[2] Hill, R. M. (2016). Harry's Cosmeticology. Chemical Publishing Company.
[3] Draelos, Z. D. (2010). Cosmetic Dermatology: Products and Procedures. John Wiley & Sons.
[4] Wegner, G., & Ruppelt, J. (2016). Polysiloxanes. Ullmann's Encyclopedia of Industrial Chemistry.
[5] Clarson, S. J. (2003). Siloxane Polymers. Prentice Hall.
[6] Owen, M. J. (2013). Surface Activity. In Silicones: Chemistry and Technology (pp. 309-370). CRC Press.
[7] Flick, E. W. (1991). Cosmetic and Toiletry Formulations, Vol. 3. Noyes Publications.
[8] Poucher, W. A. (2000). Poucher's Perfumes, Cosmetics and Soaps. Springer Science & Business Media.
[9] Schalau, G. (2008). Cosmetics: Physical, Chemical, and Physiological Aspects. Walter de Gruyter.
[10] André, O., & Gonzenbach, U. T. (2019). Dispersion and Rheology of Particle-Laden Suspensions. Wiley.
[11] Tadros, T. F. (2013). Emulsions and Emulsion Stability. John Wiley & Sons.
[12] Schlossman, M. L., & Shapiro, H. A. (2009). The Chemistry and Manufacture of Cosmetics. Allured Pub.
[13] Paye, M., Barel, A., & Maibach, H. I. (Eds.). (2015). Handbook of Cosmetic Science and Technology. CRC Press.
[14] Knaggs, H. E., & Robertson, D. (2016). Dermatology. CRC Press.
[15] Shaath, N. A. (2016). Sunscreens: Regulations and Commercial Development. CRC Press.
[16] ASTM International. (2020). Standard Practice for Packaging/Packing of Products. ASTM.
[17] European Chemicals Agency. (2007). Guidance on Information Requirements and Chemical Safety Assessment. ECHA.
[18] International Air Transport Association. (2022). Dangerous Goods Regulations. IATA.
[19] United Nations. (2021). Globally Harmonized System of Classification and Labelling of Chemicals (GHS). UN.

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