Stearic acid is a saturated fatty acid with an 18-carbon chain. The IUPAC name is octadecanoic acid. It is a waxy solid and its chemical formula is C₁₇H₃₅CO₂H. Its name comes from the Greek word στέαρ "stéar", which means tallow. The salts and esters of stearic acid are called stearates.

What is stearic acid in chemistry?

Stearic Acid is a saturated long-chain fatty acid with an 18-carbon backbone. ... Stearic acid (IUPAC systematic name: octadecanoic acid) is one of the useful types of saturated fatty acids that comes from many animal and vegetable fats and oils. It is a waxy solid.

What is other name for stearic acid?

11.4.

Stearic acid, another name for octadecanoic acid CH₃(CH₂)₁₆COOH, is one of the most common fatty acids. It exists as a glycerol ester in most animal and plant fats (Beare-Rogers, Dieffenbacher, & Holm, 2001).

What is stearic acid used for?

Stearic acid is used most often to thicken and retain the shape of soaps (indirectly, through saponification of triglycerides composed of stearic acid esters), and it is also used in shampoos, shaving creams, and detergents.

Is stearic acid good for skin?

Benefits of Stearic Acid for Skin

Stearic acid is an emollient, meaning it works by softening and smoothing the skin. (Other examples of common emollients include jojoba oil, ceramides, and squalane.) ... As such, stearic acid can help strengthen your skin barrier.

Method 1 Stearic Acid

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How do you make a stearic acid solution?

Stearic acid is obtained from fats and oils by the saponification of the triglycerides using hot water (about 100 °C). The resulting mixture is then distilled. Commercial stearic acid is often a mixture of stearic and palmitic acids, although purified stearic acid is available.

What is stearoyl stearate?

Octyldodecyl Stearoyl Stearate is an ester that functions as a skin-conditioning agent and viscosity-increasing agent. It is reported to be used in 105 cosmetic products at concentrations from 2% to 15%.

What is the pH of stearic acid?

Since the pH of stearic acid is 5.5 and the melting point is 57.23°C, and the inlet temperature of the fluidized bed granulator could be as high as 70°C, a preliminary study was initiated to determine the tolerance of L.

How do you make palmitic acid solution?

This one down is pretty handy.

1. Dissolve 0.1282g of PA in 1 mL (500 mM) of 100% ethanol and heat at 70°C.
2. Make 10% BSA in cell culture media (DMEM, KSF, etc.), ...
3. Add 10 uL of dissolved PA into 990 uL of 10% BSA.
4. Vortex and incubate at 55°C for 15 min.
5. Repeat the step 4.
6. Use 10 uL of ethanol in 990 uL of 10% BSA to make control.

Is stearic acid a mixture?

Commercial “stearic acid” is a mixture of approximately equal amounts of stearic and palmitic acids and small amounts of oleic acid. ... In nature stearic acid occurs primarily as a mixed triglyceride, or fat, with other long-chain acids and as an ester of a fatty alcohol.

Is stearic acid a solvent?

Stearic acid is soluble in organic solvents such as ethanol, DMSO, and dimethyl formamide. The solubility of stearic acid in these solvents is approximately 20, 10, and 30 mg/ml, respectively.

What is the PH of lauric acid?

value of lauric acid in water. was defined to be 5.8.

Is lauric acid found in breast milk?

Lauric acid which is naturally present in breast milk metabolizes into monolaurin, and has been studied for its various health benefits across scientific literature. Lauric acid levels in breast milk vary and may be influenced by factors within and outside the control of the nursing mother such as diet and ethnicity.

What is stearic acid made from?

Stearic acid is a fatty acid typically produced by hydrolysis of common animal and vegetable fats and oils, followed by fractionation (distillation or crystallization) of the resulting fatty acids. Pressing methods separate the liquid unsaturated fatty acids from the solid saturated fatty acids.

Is stearic acid good for hair?

Stearic acid is produced from carbohydrates and is ideal as an emulsifying agent and great for hair products to coat, condition, and protect the hair shaft without dulling or weighing it down.

Is stearic acid bad for face?

The Cosmestics Database describes stearic acid as “safe and mild,” generally. However, it does highlight that stearic acid can be a skin irritant to those with sensitive skin. Like other sets of chemicals, it also has the potential to be a carcinogen, or a product that increases the risk of cancer.

Is stearic acid safe for face?

The Cosmetic Ingredient Review Expert Panel reports that topical application of stearic acid to the skin produced no toxicity. Further studies using formulations containing stearic acid at concentrations up to 13% indicate that it is neither an irritant, sensitizer nor photosensitizing agent. Good news!