Shellac Flakes

Product Details:

Leveraging on our extensive market knowledge, we are providing a high-quality range of Dewaxed Bleached Shellac.
Details:
There are different methods to produce dew axed bleach in which raw materials and dewaxed bleached shellac are treated under different conditions and with different chemical properties.
Dew axed Bleached:
Seedlac is dissolved in an aqueous-alkali solution, filtered, dewaxed and bleached with Sodium Hypochlorite to the desired color. The shellac is then precipitated from the solution with Sulphuric acid and dried.Â
Aleuritic Acid (Shellac Aleuronic Powder):
Aleuritic Acid (9, 10, 16-trihydroxypalmitic acid), obtained from shellac by saponification, is a unique acid containing three hydroxyl groups of which two are of adjacent carbon atoms.
Chemical Properties:
Shellac dissolves in a wide variety of alkaline or rapidly drying alcoholic solvents, but is resistant to a number of other solvents, particularly hydrocarbons.
Its film show excellent adhesion to a wide variety of surfaces, possess high gloss, hardness and strength.
Shellac is a powerful bonding material with low thermal conductivity and a small coefficient of expansion. Its thermal plasticity and capacity of absorbing large amounts of fillers are noteworthy.
Its electrical properties include high dielectric strength, low dielectric constant and characteristic freedom from tracking.
It is particularly resistant to ultra-violet rays. Seedlac is dissolved in an aqueous-alkali solution, filtered, dew axed and bleached with Sodium Hypochlorite to the desired color. The shellac is then precipitated from the solution with sulphuric acid and dried.

Specifications:
Physical Data of Dewaxed Bleached Shellac :Colourmax. 1.5Acid Value75 - 90Ash Contentmax. % 0.5Insolubility in hot alcoholmax. % 0.2Moisturemax. % 5.0Saponification Value210 - 250Wax Contentmax. % 0.2Heavy Metalsmax. ppm 5Arsenicmax. ppm 3

Additional Information:

• Delivery Time: On time
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