29806-73-3 Usage
Description
Ethylhexyl Palmitate is an ester of 2-ethylhexyl alcohol and palmitic acid. It is an alternate to silicone-based ingredients offering a 'dry-slip' feel. It helps adjust consistency in skin-care products.Ethylhexyl palmitate is a mixture of a fatty alcohol and palmitic acid that functions in cosmetics products as an emollient (meaning it can soften and smooth skin), texture enhancer, and solvent in amounts from 2–50%, depending on the type of formula and desired aesthetics. It improves the look of skin, particularly dry skin, by helping reduce moisture loss from its upper layers. As a solvent, it helps solubilize other ingredients, helping active ingredients more readily penetrate skin. It helps sunscreen active ingredients such as avobenzone and ethylhexyl triazone disperse and remain evenly suspended in a formula.Ethylhexyl palmitate has a feel like some silicones and silicone derivatives, making it an alternative to those ingredients in certain formulations. There’s no research indicating this ingredient, which may be synthetic, plant-, or animal-derived, is a problem for skin. Paula’s Choice Skincare uses either the synthetic or plant-derived form of this ingredient depending on the product.https://www.paulaschoice.com/ingredient-dictionary/emollients/ethylhexyl-palmitate.html
Chemical Properties
Ethylhexyl palmitate is a colorless, odorless liquid derived from palm oil that’s used as a skin conditioning emollient and to give products their slip. It's similar in texture and sometimes used as an alternative to silicone.Ethylhexyl palmitate is an ester of 2-ethylhexyl alcohol and palmitic acid. 2-ethylhexyl alcohol can be found in natural plant fragrances and also synthetically produced. Palmitic acid is the most common saturated fatty acid found in animals, plants and microorganisms, and is a major component of palm oil. Ethylhexyl palmitate is a clear, colorless liquid at room temperature with a slightly fatty odor. It is insoluble in water but mildly dissolves in oils.
Uses
Ethylhexyl palmitate is an ingredient that is used to improve the texture, feel, and the scent of skincare and cosmetic products. It functions as an emollient, solvent, and fragrance fixative.In cosmetics and skincare products, ethylhexyl palmitate functions as an emollient, solvent, and fragrance fixative.MoistureAs an emollient, ethylhexyl palmitate helps to keep the skin moist and supple by reducing water loss from the top layers of the skin. Emollients also act as lubricants by reducing friction when anything rubs against the skin. Ethylhexyl palmitate is considered to be a non-occlusive emollient, which means it does not form a film on the surface of the skin. It is often used as an organic replacement to silicones in a cosmetic formulation because it provides a dry-slip, silky feel that is very similar to how a silicone would feel.While all skin types can benefit from emollients like ethylhexyl palmitate, emollients are very beneficial for those who have dry, rough, and/or flaky skin. Emollients can treat these symptoms, leaving the skin looking and feeling soft and smooth. In addition, emollients may be suitable for those that suffer from conditions such as eczema, psoriasis, or other inflammatory skin conditions.SolventEthylhexyl palmitate functions as a solvent by helping other ingredients dissolve. Solvents can also increase the efficacy of active ingredients in a formulation by enhancing their absorption through the skin.AppearanceAnother function of ethylhexyl palmitate in cosmetics is as a pigment wetting agent. Wetting agents work by reducing the interfacial tension between two different types of ingredients in a cosmetic formulation. Wetting agents are useful in makeup as they improve the pigment or color distribution in the formulation. Think about even eyeshadow or foundation pigment.FragranceLastly, ethylhexyl palmitate functions as a fragrance fixative in cosmetics and skincare products. A fixative helps to equalize the volatile fragrance components making them last longer and remain more stable on the skin.
Safety
The safety of the Palmitates has been assessed by the Cosmetic Ingredient Revies (CIR) Expert Panel. The CIR Expert Panel evaluated the scientific data and concluded that Ethylhexyl Palmitate, Cetyl Palmitate and Isopropyl Palmitate were safe as cosmetic ingredients. In 2001, the CIR Expert Panel considered available new data on Ethylhexyl, Cetyl and Isopropyl Palmitate and reaffirmed the above conclusion.https://cosmeticsinfo.org/ingredient/ethylhexyl-palmitate
Flammability and Explosibility
Nonflammable
Safety Profile
Low toxicity by ingestion and skincontact. A skin irritant. When heated to decomposition itemits acrid smoke and irritating fumes.
Check Digit Verification of cas no
The CAS Registry Mumber 29806-73-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,9,8,0 and 6 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 29806-73:
(7*2)+(6*9)+(5*8)+(4*0)+(3*6)+(2*7)+(1*3)=143
143 % 10 = 3
So 29806-73-3 is a valid CAS Registry Number.
InChI:InChI=1/C24H48O2/c1-4-7-9-10-11-12-13-14-15-16-17-18-19-21-24(25)26-22-23(6-3)20-8-5-2/h23H,4-22H2,1-3H3
29806-73-3Relevant articles and documents
Carbocatalysis: N-doped reduced graphene oxide catalyzed esterification of fatty acids with long chain alcohols
Porwal, Jyoti,Karanwal, Neha,Kaul, Savita,Jain, Suman L.
, p. 1547 - 1553 (2016/02/19)
Nitrogen doped reduced graphene oxide (N-rGO), 5.8% N readily synthesized from the thermal annealing of graphene oxide (GO) in ammonium hydroxide at 453 K, was demonstrated to be a superior metal-free non-acidic carbo-catalyst for the esterification of fatty acids with different alcohols. The effect of various reaction parameters such as reaction temperature, reaction time, catalyst amount etc. has been studied. The developed catalyst was found to be highly stable and exhibited consistent reusability for seven cycles without any significant decrease in the product yields.
Catalytic synthesis of the iso-octyl palmitate from palmitic acid and isooctanol with water-tolerant solid acid
Chen,Shi
body text, p. 4109 - 4113 (2012/01/19)
Iso-octyl palmitate is synthesized via esterification of palmitic acid and isooctanol when the water-tolerant solid acid is used as the catalyst. The particular chelate molecular structure of SnC2O4 makes Sn atom have the suitable acid intensity. The steric hindrance in the course of the reaction is reduced because of its molecular structure with the plane surface. In addition, the stability of molecule of SnC2O4 is strengthened because of its chelate molecular structure. All these factors lead to its high catalytic activity in the esterification reaction. Many factors, which have an effect on the yield of iso-octyl palmitate, have been studied. The reaction conditions for synthesizing isooctyl palmitate with high yield are optimized with the orthogonal experiment. The optimum conditions for synthesizing iso-octyl palmitate with high yield are as follows: reaction time is 2.5 h and the mol ratio of isooctanol to palmitic acid is 1.8:1 and the dosage of the catalyst is 2.0 % and the reaction temperature is 150°C.
