Stearic Acid (C18 63% - 68%)

Brief Overview

Octadecanoic acid, another name for stearic acid, is a saturated fatty acid that is found in high fat plant and animal sources. It is widely known to have several health benefits. It is a waxy white solid with a molar mass of 284.48 g/mol and a chemical formula of CH3(CH2)16CO2H. These fats naturally contain oleic, palmitic, and stearic acids; nearly equal amounts of oleic and palmitic acids are necessary for the synthesis of commercial stearic acid. Commonly, stearic acid can be found in nature as a mixed triglyceride containing other long-chain acids or as an ester of fatty alcohol. Notably, compared to fats derived from plants, animal fats frequently have a higher stearic acid content.

Manufacturing Process

Fatty acids play a crucial role in the synthesis of stearic acid, with the manufacturing process customized to meet specific quality standards and chosen raw materials. Various procedures are employed to adhere to these criteria. Tallow and grease are the primary raw materials prominently used for stearic acid synthesis. The production process consists of two main stages:

a. Hydrolysis: Raw materials (oil or fat) undergo hydrolysis, leading to the creation of glycerin and fatty acids. Subsequently, the two end products are separated.

b. Separation: In the second stage, the purification and separation of the fatty acid mixture refine the stearic acid production process.

Paint Industry

One particularly useful wax modifier in the craft of candlemaking is stearic acid. This non-toxic component adds a heightened whiteness and improves the hardness and opacity of candles. It also helps freestanding candles keep their shape, especially in the warmer months. Additionally, it raises the candle's melting point and overall consistency of endurance. Its outstanding shaping capabilities coupled with stability make it a highly sought-after material for a wide range of creative and craft applications, in addition to candlemaking.

Detergent Industry

Stearic acid assumes a pivotal role in the manufacturing of soap and cosmetics, encompassing face wash, shampoo, beauty soaps, and shaving cream. This essential ingredient contributes significantly by enhancing the structural integrity of soap through thickening and hardening processes. Its multifaceted utility extends to face cleansers, shampoos, and shaving creams, where it serves as a potent cleanser and functions as an effective emulsifying agent. This dual action facilitates the binding of oil and water, culminating in products characterized by a luxurious smoothness and creaminess.

Fragrance and Flavoring Industry

Stearic acid is ubiquitously employed in the food industry, serving as a dual-purpose additive as both a flavoring agent and binder. Its versatile applications span the enhancement of taste and texture in a myriad of products, including margarine, creamy spreads, chewing gums, bakery goods, dietary supplements, soft drinks, and artificial sweeteners. The strategic incorporation of stearic acid in these formulations is directed at optimizing sensory attributes, culminating in products that are aesthetically pleasing to consumers.