Stearic Acid Rubber Grade With C18


:   Octadecanoic acid

Cas Number

:   57-11-4

HS Code

:   3823.11.00




Basic Info

Appearance Name

:   White Beads/Flakes

Common Names

:   Octadecanoic acid


: 25 kg PP Bag

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Technical Document

Brief Overview

One common and advantageous kind of saturated fatty acid found in both animal and vegetable fats is stearic acid, also known as octadecanoic acid. It is a waxy white solid with the chemical formula of CH3(CH2)16CO2H and molar mass of 284.48 g/mol. These fats are made up of oleic, palmitic, and stearic acids in their natural state; industrial stearic acid is made from almost equal parts oleic and palmitic acids. Stearic acid occurs naturally as an ester of fatty alcohol or in mixed triglycerides with other long-chain acids. It's important to remember that, on general, animal fats contain more stearic acid than vegetarian fats.

Manufacturing Process

Stearic acid is manufactured using fatty acids, with the manufacturing process being contingent upon the chosen raw material and the desired stearic acid quality. Various procedures are employed based on these criteria. Tallow and grease are the most commonly utilized raw materials for synthesizing stearic acid. The production process involves two primary steps:

a. Initially, the raw materials (oil or fat) undergo hydrolysis to generate glycerin and fatty acids. The subsequent step involves separating the two resulting products.

b. The second stage encompasses the purification and separation of the fatty acid mixture.

Paint Industry

Stearic acid proves to be a beneficial wax improver in the craft of candlemaking. Beyond increasing the hardness and opacity of candles, this safe additive contributes to the preservation of the shape of freestanding candles, particularly in warmer weather, and enhances their brightness. Moreover, stearic acid elevates the melting point and overall consistency and durability of candles. Its stability and shaping attributes make it a preferred choice for crafting a diverse array of artistic and creative objects.

Detergent Industry

The formulation of soaps and cosmetics, including face wash, shampoo, beauty soaps, and shaving cream, depends heavily on stearic acid. Its main purpose is to increase the soap's thickness or hardness, which supports the soap's structural integrity. Stearic acid binds water and oil, making products smooth and creamy. It also works as a potent cleaner and emulsifier. This adaptable component is frequently added to shampoos, face cleansers, and shaving creams in order to take use of its emulsifying and cleansing abilities.

Fragrance and Flavoring Industry

The food industry uses stearic acid extensively to enhance the flavor and texture of many different food products by using it as a binder and flavoring ingredient. Its many applications include the production of margarine, soft drinks, chewing gum, pastry products, creamy spreads, and artificial sweeteners. Stearic acid is included into these formulations in an effort to improve the items' sensory attributes and increase their visual attractiveness to customers.

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