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Bleaching Earth

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Bleaching Earth Specification

Application
Edible oil refining, mineral oil purification, decolorization and purification of oils and fats

Surface Finish
Fine powder

Hardness (%)
60 75 (Mohs scale not specifically applicable for powder)

Water Absorption
Moderate, hygroscopic

Melting Point
Not applicable (non-fused clay material)

Usage & Applications
Decolorization, purification, adsorption of impurities in edible oils/fats

Purity(%)
Typically 97% 99%

Form
Powder

Chemical Composition
Montmorillonite clay, SiO, AlO, FeO

Density
850 Gram per cubic centimeter(g/cm3)

Product Type
Bleaching Earth / Activated Clay

Types of Refractories
Not classified as refractory material

Shape
Powdered form

Porosity
Highly porous structure

Dimensional Stability
Stable under working conditions

Strength
High adsorptive strength

Specific Gravity
2.3 2.5

Thermal Conductivity
Low

Color
Light cream to pale brown

HS Code
2508

Odor
Odorless

Particle Size
Less than 150 microns

CAS Number
1318-93-0

Shelf Life
1 2 years (when kept dry)

Packaging
25 kg, 50 kg bags

Loss on Ignition (%)
7%

Appearance
Fine free-flowing powder

Oil Retention (%)
25%

Bulk Density
0.65 0.85 g/cm

Moisture Content (%)
10%

pH Value
4 6

About Bleaching Earth

Being a reliable and primary manufacturer, exporter and supplier, we are engaged in offering Bleaching Earth to our clients. Our provided chemical is used for removing pigments from oil and other chemicals. The offered chemical is accurately processed using supreme quality chemical compounds and advanced processing techniques under the strict observation of our deft technocrats in compliance with set market quality standards. Apart from this, we are providing this Bleaching Earth to the customers in several specifications at marginal prices within promised time frame.

Features:

Accurate composition
Precisely processed
Free from all type of impurities
Enhanced shelf life

Details:

Bleaching earth, often called fullers earth, is a type of clay mined in Asia, England, India, and the United States. Once obtained from the earth, this mineral-rich substance is processed and used for its absorbing, bleaching, and filtering properties. After industrial use, the earth must again undergo processing in which it is recycled for reuse or rendered safe for disposal. This clay also commonly contains iron, magnesium and calcium.

Exceptional Adsorptive Power for Oil Refinement

With a highly porous structure and light cream to pale brown appearance, Bleaching Earth demonstrates remarkable efficiency in absorbing impurities. Its adsorption capacity stems from a combination of fine particle size and high-purity clay composition, ensuring consistent purification outcomes. Professionals in the oil industry rely on this material to enhance oil clarity and achieve regulatory quality standards.

Safe and Versatile for Industrial Applications

This Bleaching Earth contains minimal moisture (10%) and oil retention (25%), making it ideal for the treatment of edible oils, mineral oils, and fats. Its neutral to mildly acidic pH (46) ensures compatibility with various refining processes, while being odorless and non-toxic. The product is not classified as a refractory material, contributing to its stability and safety during industrial applications.

FAQs of Bleaching Earth:

Q: How is Bleaching Earth used in the refining process of edible oils?

A: Bleaching Earth is mixed with crude edible oils or fats during the refining process. The powder adsorbs pigments, impurities, trace metals, and oxidation products. After adequate contact, the mixture is filtered, leaving clarified and decolorized oil for further processing or packaging.

Q: What are the key benefits of using this Bleaching Earth for oil purification?

A: Its high porosity and adsorptive strength efficiently remove unwanted color, trace metals, fatty acids, and other impurities. This results in clear, neutral-flavored oils that meet food safety and quality requirements, with minimal oil loss due to its low oil retention percentage.

Q: When is the optimal time to add Bleaching Earth during oil processing?

A: Bleaching Earth is ideally added after degumming and neutralization, during the bleaching stage of oil refining. This ensures maximum contact with impurities, maximizing adsorption before subsequent deodorization or final filtration.

Q: What steps should be followed to store Bleaching Earth safely for up to 2 years?

A: Keep the product in a clean, dry place, and ensure bags are tightly sealed. Moisture may reduce its adsorptive efficiency, thus storage in cool, low-humidity conditions is essential to preserve optimal shelf life of 12 years.

Q: Where can this Bleaching Earth be used apart from edible oil refining?

A: Besides edible oil refining, it can be utilized in the purification of mineral oils, decolorization of various fats, and even in industrial sectors requiring adsorption of dyes or contaminants due to its high purity and fine powdered form.

Q: What makes the chemical composition of this Bleaching Earth suitable for industrial applications?

A: It contains Montmorillonite clay rich in SiO, AlO, and FeO, lending it high adsorptive capacity and chemical stability. Its specific gravity (2.32.5) and highly porous nature enhance its ability to trap impurities, making it practical and efficient for industrial oil purification.

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