Activated Bleaching Earth Supplier in Malaysia: Refining Grades
- Also known as
- Bleaching Earth
- Bleaching Clay
- Activated Clay
Activated bleaching earth supplier for palm oil, edible oil, oleochemical and oil re-refining plants in Malaysia. Known in the trade as bleaching earth, bleaching clay or activated clay, it is an acid-activated adsorbent clay charged at the bleaching stage of refining.
Its job is adsorption, not filtration. In one contact step it strips colour bodies, phospholipids, residual soaps, oxidation products and trace metals so the oil deodorises to specification afterwards. That makes it a different product from the mineral filter aids used to clarify the same oil.
Grades are separated by activation level, from natural and low-activation material through standard grades to highly activated clays, with neutral low-acidity grades for oils that react to residual acidity. Free acidity, moisture, particle grading, oil retention and cake filtration rate are the parameters that decide the choice. A stronger grade is not automatically the cheaper one once retained oil and press time are counted.
Send the oil or feedstock, current and target colour, dosage, quantity and delivery location with your enquiry. Grade documentation, pack format, availability and timing are confirmed with the quotation.
- Grade
- highly activated, standard activated, low activation, neutral
- Appearance
- fine off-white to buff or grey powder
Bleaching Earth grades and forms
We supply several forms to suit different formulating and dosing setups. If you need a size that is not listed, ask us.
| Grade | Form | Assay | Typical use | Packing |
|---|---|---|---|---|
| Highly activated bleaching earth | fine buff powder | — | Difficult feedstocks and dark crude oils, where colour bodies, oxidation products and trace metals have to be pulled down hard and dosage economy matters more than acidity sensitivity. | Confirm the required pack format with the quotation. |
| Standard activated bleaching earth | fine off-white to buff powder | — | Routine bleaching of palm and palm kernel oil and other edible oils on a settled refinery recipe, balancing colour removal against dosage, filtration time and oil retention. | Confirm the required pack format with the quotation. |
| Low-activation and natural bleaching earth | fine grey to buff powder | — | Lightly coloured or pre-treated oils and blending duty alongside a stronger grade, where the aim is phospholipid, soap and trace metal pickup rather than heavy decolourising. | Confirm the required pack format with the quotation. |
| Neutral or low-acidity grade | fine off-white powder | — | Oils and specialities that react badly to residual acidity, including systems prone to acid-catalysed isomerisation, polymerisation or free fatty acid rise during bleaching. | Confirm the required pack format with the quotation. |
| High filtration-rate grade | coarser free-flowing powder | — | Presses that are cycle-time limited or run tight filtration, chosen for faster cake drainage and lower oil carry-over rather than for maximum colour reduction. | Confirm the required pack format with the quotation. |
How to buy bleaching earth from ChemTrade
Request a quote for bleaching earth
Use the form below to request a quotation. You can also email sales@chemtrademalaysia.com or send us a message on WhatsApp.
Specifications
| Parameter | Value | Method |
|---|---|---|
| Appearance | fine off-white to buff or grey powder | — |
| Material | acid-activated adsorbent clay, a processed mineral product rather than a defined single substance | — |
| Clay base | the base mineral differs between producers, so it is confirmed for the grade quoted rather than assumed | — |
| Grade axis | activation level, running from natural and low-activation material through to highly activated grades | — |
| Free acidity | residual acidity, and the pH of an aqueous slurry, confirmed against the required grade | — |
| Moisture | moisture content confirmed against the required grade | — |
| Particle grading | particle size distribution or sieve residue and bulk density confirmed against the required grade | — |
| Bleaching performance | colour reduction depends on the oil and the process, so it is established by bleaching trial on the actual feedstock rather than from a single figure | — |
| Oil retention and filtration | residual oil retained in the cake and cake filtration rate vary by grade and press, and are assessed together with dosage | — |
| Solubility | insoluble in water and in oils; it acts by adsorption | — |
Bleaching Earth applications
Safety and handling
Keep bags closed, dry and off the floor, because absorbed moisture reduces adsorption capacity before the clay reaches the press. Control dust at charging and slurry-mixing points and use eye protection and a suitable mask. Oil-wet spent cake behaves differently from fresh product and is handled under the refinery's own procedures. Supply is subject to applicable requirements.
Common questions about bleaching earth
What is activated bleaching earth used for?
It is the adsorbent charged at the bleaching stage of oil and fat refining. In a single contact step it removes colour bodies, phospholipids, residual soaps, oxidation products, trace metals and some contaminants, which is why the bleached oil then deodorises cleanly. Palm and palm kernel oil refining is the largest use in this region.
Is bleaching earth the same as bentonite?
No. Bentonite is the raw mined clay; bleaching earth is a processed adsorbent made by treating a clay with acid, washing and drying it to open up surface area and adsorption capacity. The refining performance comes from that processing, so order each one by name and state the grade.
Is bleaching earth the same as fuller's earth?
The two terms overlap but they are not equivalent. Fuller's earth is an old trade label stretched across a range of adsorbent clays, and a large share of the demand behind it today is cosmetic and consumer. A refinery buying an adsorbent should ask for bleaching earth by name and state the activation level, so nobody quotes a face-mask clay against a bleaching duty.
How do I choose an activation level?
Work from the oil rather than from the grade names. A dark or difficult feedstock and a tight colour target push towards a highly activated grade, while a pre-treated or light oil is often handled on standard or low-activation material. Send the current and target colour, dosage and temperature, and a trial on your own oil settles it.
Does a stronger grade always work out cheaper?
Not necessarily. A more active clay usually reaches the colour target at a lower dosage, but it can carry higher residual acidity, retain more oil in the cake and slow the press. The real comparison is clay cost plus retained oil loss plus cycle time, which is why refiners trial two grades side by side.
Do you supply spent bleaching earth or handle its disposal?
No. Spent bleaching earth is the oil-wet by-product leaving the filter press after bleaching, and it is a separate material from the fresh adsorbent quoted here. Enquiries on this page are answered as fresh product; spent cake handling stays with the refinery and its own arrangements.
Why is no CAS number or formula published for this product?
Because it is a processed mineral, not a defined chemical substance. The clay base differs between producers and the activation route changes the finished material, so a single registry number or formula would misdescribe what arrives. Grade documentation from the source being quoted is the reference.
What details are needed for a bleaching earth price enquiry?
Provide the activation level or the grade you currently run, the oil or feedstock, dosage, quantity and delivery location, plus any acidity, moisture or particle grading limits. Add documentation needs and the timing you are working to so the quotation covers the whole requirement.