What dissolves stearic acid?
The solubility of stearic acid in ethanol, methanol, ethyl acetate, and acetone has been measured gravimetrically at various temperatures ranging from 301 to 313 K at atmospheric condition. The solubility of stearic acid in ethyl acetate was found to be the highest, followed by ethanol, acetone and methanol.
What type of bond does stearic acid have?
It is a saturated fatty acid, which means the carbon backbone is made up of a long chain of carbon atoms bonded together by single bonds and with two hydrogen atoms bonded to each of the internal carbon atoms. Stearic acid is a common ingredient in stick deodorant.
Why is stearic acid not soluble in water?
The molecule gets over the problem that “oil and water don’t mix” by having a molecule with 2 parts – an oily part and an ionic part. The tail is basically an alkane, and so readily dissolves in fat, oil and grease, but not in water. Thus the tail is said to be hydrophobic (water-hating).
Is stearic acid an emulsifier?
Stearic acid is an emulsifier by itself, but can also be used with triethanolamine. When mixed, the two compounds react and become a paste called ‘triethanolamine stearate’ that helps to create a loose emulsion that is easily absorbed by the skin.
What is the main source of stearic acid?
Major food sources of stearic acid for adults are meat/ poultry/fish, grain products, and milk/milk products (Table 1). Fats rich in stearic acid include cocoa butter (typically consumed as chocolate), mutton tallow, beef tallow, lard, and butter.
What is another name for stearic acid?
stearic acid, also called Octadecanoic Acid, one of the most common long-chain fatty acids, found in combined form in natural animal and vegetable fats.
Is stearic acid nonpolar or polar?
Consider stearic acid, a type of lipid known as a fatty acid. It has an 18 C atom chain with a carboxylic acid group (RCO2H) at one end. The carboxyl end (shown in red) containing the two oxygens is polar, but the rest of the molecule is completely nonpolar.
Is stearic acid a covalent bond?
Our group determined that stearic acid, salicylic acid, and sucrose were all covalent reagents, while sodium chloride, potassium iodide, and sodium nitrate were ionic compounds.
Is stearic acid a stabilizer?
In emulsions, Stearic Acid is an effective stabilizer, thickener, and softener that contributes a cooling sensation on the skin. It is also known to contribute a pearly finish to lubricants.
Is stearic acid a preservative?
Characteristics. Stearic acid is a naturally occurring fat that occurs in our own skin naturally, it has excellent thickening properties and helps provide a luxurious and complete feel to a finished product, removing that ‘watery’ feeling, whilst providing some preservative properties to your finished product.
What is stearic acid made of?
Commercially sold stearic acid is mostly a mixture of stearic and palmitic acids, though there does exist commercially available pure stearic acid. When it comes to biosynthesis, this compound is usually produced in the body from the consumed carbohydrates via a process known as fatty acid synthesis.
What are the effects of stearic acid?
Effects on Health. This chemical compound is combustible and heats spontaneously. It is generally nontoxic but when inhaled can cause irritation in the throat, nose, and eyes. Learn more about the physical and chemical properties of Stearic acid (C 18 H 36 O 2) from the experts at BYJU’S.
What is stearic acid (octadecanoic acid)?
It is also called Octadecanoic acid or Stearophanic acid. It is usually found in various plants and animal fats. It is a majorly found as a component of shea butter and cocoa butter. The chemical formula of Stearic acid is C 18 H 36 O 2. In its solid form, it appears as a white solid and has a mild pungent, oily odor.
What is 9 10 epoxyoctadecanoic acid?
9,10-epoxyoctadecanoic acid is an epoxy fatty acid consisting of octadecanoic (stearic) acid with a single epoxide located between positions 9 and 10. It has a role as a human metabolite. It is a conjugate acid of a 9,10-epoxyoctadecanoate.