Pure-Flo® Supreme B81 Bleaching Earth for Edible Oils
Pure-Flo® Supreme B81 Bleaching Earth for Edible Oils - Pallet - 40 x 50lb bags is backordered and will ship as soon as it is back in stock.
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Bulk pricing (2+ pallets): 2–3 @ $1,649 ea • 4+ @ $1,599 ea. Live freight quotes at checkout.
| Minimum Qty | Discount |
|---|---|
| 2 + | $1,649.00 |
| 4 + | $1,599.00 |
Overview
Pure-Flo® Supreme B81 by Oil-Dri is a surface-modified bleaching adsorbent developed for fats, edible oils and specialty oil-processing applications. It is designed to provide a practical balance of adsorption activity and filtration performance, particularly where moderate color and chlorophyll reduction are important.
Supreme B81 can adsorb selected metals and polar impurities while helping reduce color bodies, chlorophyll, soaps and phospholipid-related contaminants from compatible oils. Its filtration characteristics are designed to support long filtration cycles with reduced pressure buildup near the end of the cycle.
For broader grade-selection guidance, see our Bleaching Clays & Purification Adsorbents collection, Bleaching Earth for Edible Oil Refining , and Adsorbents for Oil Purification & Refining .
Minimum order: 2 pallets.
- 2–3 pallets: $1,649 per pallet
- 4+ pallets: $1,599 per pallet
Bagged pallet configuration: 40 × 50 lb (22.68 kg) bags — 2,000 lb (approximately 907 kg) net per pallet.
Bulk format: 2,000 lb (approximately 907 kg) supersack available by request. Contact Sorbents Direct for current pricing and availability.
Freight is calculated at checkout using live LTL rates for eligible configurations.
Where Pure-Flo® Supreme B81 Fits
- Edible-oil refining: Bleaching and polishing of compatible vegetable oils, animal fats and specialty edible-oil streams.
- Palm-oil processing: Physical refining applications where a balance of bleaching activity and filtration performance is important.
- Corn & cottonseed oil: Reduction of color bodies and selected impurities during oil purification.
- Tallow & animal fats: Clarification and color reduction in compatible processed fats.
- Multi-oil processing: A surface-modified bleaching-earth option for facilities handling multiple feedstocks.
- Specialty oil purification: Treatment of compatible oils requiring color reduction, selected impurity adsorption and reliable downstream filtration.
Supreme B81 belongs in the bleaching-earth branch, not the selective-adsorbent branch.
B81 is most naturally evaluated where broad oil purification, color reduction, chlorophyll reduction and filtration performance are key. For more targeted pretreatment of soaps, trace metals and phosphorus-related impurities, compare Pure-Flo® Select 350 and Pure-Flo® Select 450.
Why Choose Supreme B81?
- Surface-modified adsorption: Oil-Dri's proprietary processing modifies the mineral surface to provide a different balance of adsorption and filtration behavior than naturally active grades.
- Color & chlorophyll reduction: Intended for treatment of compatible color bodies and chlorophyll in vegetable oils.
- Trace-metal adsorption: Can adsorb selected metals such as calcium, iron, magnesium and nickel, depending on the feed and process conditions.
- Phosphorus-related impurity reduction: Can help reduce residual phospholipid-related contaminants in compatible edible-oil streams.
- Soap reduction: Helps reduce residual soaps and other compatible polar impurities.
- Controlled free-fatty-acid response: Designed to limit unnecessary FFA rise during bleaching compared with more aggressive treatment approaches.
- Filtration performance: Oil-Dri positions Supreme B81 for long filtration cycles with reduced pressure buildup near the end of the cycle.
- Processing flexibility: Suitable for evaluation across palm, corn, cottonseed, tallow and other compatible oil-processing applications.
Typical Properties
| Product family | Surface-modified bleaching adsorbent |
|---|---|
| Form | Fine powdered bleaching earth |
| Free moisture | 15.5% typical at 105°C |
| pH | 4.4 typical, measured at 5% solids in deionized water |
| Tamped density | 43 lb/ft³ typical (688 g/L) |
| Particle size | 77% typical passing 325 mesh; less than 45 microns |
| Manufacturer | Oil-Dri Corporation of America |
Values shown are published typical properties and are not absolute product specifications. Final lot-specific values, where available, should be confirmed through current manufacturer documentation or a Certificate of Analysis.
Performance Characteristics
| Process Objective | Published Performance Characteristic |
|---|---|
| Color reduction | Designed to reduce compatible color bodies in a range of oils |
| Chlorophyll reduction | Oil-Dri positions Supreme B81 for effective chlorophyll reduction in compatible vegetable-oil feeds |
| Trace-metal adsorption | Can adsorb selected metals including calcium, iron, magnesium and nickel |
| Phosphorus-related impurity reduction | Can reduce residual phospholipid-related contaminants |
| Soap & polar-impurity reduction | Can help reduce soaps and other compatible polar contaminants |
| Free-fatty-acid response | Designed to minimize unnecessary FFA rise during bleaching |
| Filtration | Positioned for long filtration cycles with reduced pressure buildup toward the end of the cycle |
B81 vs. Other Pure-Flo® Bleaching-Earth Grades
| Selection Factor | Pure-Flo® B80 | Pure-Flo® Supreme B81 | Pure-Flo® Supreme 55 |
|---|---|---|---|
| General product position | Naturally active bleaching earth | Surface-modified bleaching adsorbent | Alternative bleaching-earth grade |
| Surface treatment | No mineral-acid activation | Surface-modified proprietary processing | Confirm exact current manufacturer specification |
| Primary selection emphasis | Broad purification with naturally active clay chemistry | Balance of color/chlorophyll reduction and filtration performance | Grade-specific bleaching and filtration performance |
| Are they interchangeable? | No. Compare current manufacturer specifications and validate against the actual oil, dosage, filtration system and finished-product target. | ||
Compare Pure-Flo® B80 and Pure-Flo® Supreme 55 when evaluating alternative Oil-Dri bleaching-earth grades.
Selection note: B81 should not be selected from pH or apparent activity alone. Finished-oil quality, dosage, filtration rate, pressure buildup and oil retention all contribute to actual process economics.
Regulatory & Food-Processing Considerations
Oil-Dri positions the Pure-Flo® product family for fats and oils processing. Any application-specific regulatory or processing-aid status should be confirmed using the current manufacturer documentation for the exact supplied grade and market.
If your process requires a specific FDA, processing-aid, food-use, heavy-metals, elemental-impurity or other compliance statement, identify the requirement before ordering so Sorbents Direct can confirm the current documentation available from Oil-Dri.
Packaging & Availability
| Package | Configuration |
|---|---|
| 2,000 lb (approximately 907 kg) | One pallet containing 40 × 50 lb (22.68 kg) bags |
| 2,000 lb (approximately 907 kg) | One bulk supersack |
- Minimum order: Two pallets for the published bagged-pallet pricing
- Bagged material: Palletized and unitized for LTL shipment
- Supersacks: Available by request; contact Sorbents Direct for current pricing and availability
- Freight: Live LTL rates may be calculated at checkout for eligible configurations
- Volume requirements: Contact Sorbents Direct for recurring orders, multi-pallet pricing or delivered bulk quotations
Use & Process Guidance
Bleaching-earth dosage and operating conditions depend on the incoming oil, contaminant profile, required finished-oil specification, filtration equipment, temperature, vacuum, residence time and downstream process requirements.
Oil-Dri's published laboratory example for degummed sunflower oil used the following conditions:
| Laboratory Condition | Published Example |
|---|---|
| Oil quantity | 200 grams |
| Vacuum | 27–29 inches Hg |
| Bleaching temperature | 220°F (104°C) |
| Residence time | 30 minutes |
| Dosage rate | 0.5% |
These conditions are a manufacturer-published laboratory example, not a universal production recommendation. Bench or plant trials using the actual oil and equipment should establish the final dosage and operating conditions.
Filtration & Process Economics
Supreme B81 should be evaluated as part of the entire bleaching cycle rather than only by contaminant removal. In oil refining, filtration performance and retained product can materially affect total treatment cost.
| Process Variable | Why It Matters |
|---|---|
| Adsorbent dosage | Affects treatment performance, media consumption and spent-cake volume |
| Color / chlorophyll target | Determines the required level of bleaching performance |
| Filtration cycle length | Influences throughput and equipment productivity |
| Pressure buildup | Can limit filtration cycle duration and operating efficiency |
| Oil retention | Product held in spent bleaching earth represents yield loss |
| Finished quality | The selected grade should meet the process target without unnecessary over-treatment |
Quality Assurance
Published properties provide a useful reference for Supreme B81. Because Sorbents Direct has not yet received a production lot of this material, a representative lot-specific COA is not currently displayed on this page.
Where available, documentation for supplied material may include:
- Manufacturer Technical Data Sheet
- Safety Data Sheet
- Lot-specific Certificate of Analysis
- Packaging and traceability information
Handling & Storage
- Store the product in a dry, protected location.
- Keep bags or supersacks closed until use.
- Minimize airborne dust during transfer and handling.
- Use suitable ventilation and personal protective equipment as directed by the current SDS.
- Review applicable requirements for handling and disposal of fresh and spent bleaching earth.
- Spent bleaching earth may retain oil and should be managed according to the actual process, current safety documentation and applicable regulations.
Always review the current Safety Data Sheet before handling or use.
Why Buy Supreme B81 from Sorbents Direct?
Sorbents Direct helps industrial buyers evaluate Supreme B81 within the broader Oil-Dri bleaching-earth and selective-adsorbent product family.
- Published multi-pallet pricing for qualified bagged-pallet orders
- Bagged and supersack formats for production-scale requirements
- Live LTL freight for eligible checkout configurations
- Manufacturer-document support including SDS, TDS and available COA information
- Grade comparison across B80, Supreme B81, Supreme 55, Select 350 and Select 450
- Application-focused assistance around oil type, contaminants, dosage and filtration
- Recurring supply support for multi-pallet and production requirements
Need a different Oil-Dri purification grade?
Compare Pure-Flo® B80 and Pure-Flo® Supreme 55 for alternative bleaching-earth options.
For more selective feedstock pretreatment, see Pure-Flo® Select 350 and Pure-Flo® Select 450.
Browse the full Bleaching Clays & Purification Adsorbents collection.
Documentation & Support
Available product documentation may include:
- Safety Data Sheet (SDS)
- Technical Data Sheet (TDS)
- Certificate of Analysis, where available for the supplied lot
- Packaging and freight information
- Technical product-selection assistance
Visit our Documentation Center or contact Sorbents Direct to discuss your oil, process conditions, filtration system, packaging preference and order volume.
Need Help Selecting a Bleaching Earth?
The appropriate bleaching adsorbent depends on the oil type, incoming color, chlorophyll, soaps, phospholipid-related impurities, trace metals, dosage target, filtration rate, pressure buildup and finished-oil specification. Sorbents Direct can help compare Oil-Dri grades for controlled bench or production evaluation.
Questions & Answers
What is Pure-Flo® Supreme B81?
Supreme B81 is a surface-modified bleaching adsorbent manufactured by Oil-Dri for fats, edible oils and specialty oil-purification processes.
What contaminants can Supreme B81 help reduce?
Depending on feedstock and process conditions, Supreme B81 can be evaluated for color bodies, chlorophyll, residual soaps, phospholipid-related impurities, selected trace metals and other compatible polar contaminants.
Which oils can be treated with Supreme B81?
Published applications include palm, corn, cottonseed, tallow and other compatible fats and oils requiring bleaching and purification.
Is Supreme B81 acid activated?
Oil-Dri describes Supreme B81 as a surface-modified bleaching adsorbent produced using proprietary Surface Modification Technology. It should not be described simply as equivalent to B80 or another naturally active clay.
What is the difference between B80 and Supreme B81?
B80 is positioned as a naturally active bleaching-earth product, while B81 is surface modified. Their adsorption behavior, acidity, filtration characteristics and process fit can therefore differ. Compare them using the actual feedstock and finished-product requirement.
How does B81 compare with Supreme 55?
Both are Oil-Dri bleaching-earth options, but their grade-specific properties and process performance should be compared using current manufacturer documentation and representative oil trials.
When should Select 350 or Select 450 be considered instead?
Select 350 and Select 450 are more naturally positioned for selective feedstock pretreatment where soaps, trace metals and phosphorus-related contaminants are important to downstream processing rather than broad bleaching alone.
See our Biodiesel Feedstock Pretreatment guide for additional context.
What is the typical particle size?
The published typical value is 77% passing a 325-mesh screen, corresponding to particles smaller than approximately 45 microns.
Does Supreme B81 support fast filtration?
Oil-Dri positions Supreme B81 for favorable filtration behavior, including long filtration cycles and reduced pressure buildup near the end of the cycle. Actual performance depends on the oil, dosage, filter and process conditions.
What dosage should I use?
Dosage should be established through process testing. Oil-Dri's published TDS includes a 0.5% laboratory example for degummed sunflower oil, but the appropriate production dosage depends on the oil, contaminants, equipment and finished-product requirement.
What package options are available?
Sorbents Direct offers Supreme B81 in 2,000 lb bagged pallets containing forty 50 lb bags and in 2,000 lb supersacks by request.
What is the minimum order?
The current minimum order for published bagged-pallet pricing is two pallets, or 4,000 lb total.
Is Supreme B81 suitable for edible-oil processing?
Oil-Dri positions Supreme B81 for fats and oils processing. Exact application-specific regulatory and documentation requirements should be confirmed using current manufacturer documentation before use.
Is a COA available?
Lot-specific Certificates of Analysis may be available for supplied production lots. Contact Sorbents Direct when requesting a quote or placing an order if a COA is required.
Related Products & Resources
- Bleaching Clays & Purification Adsorbents
- Pure-Flo® B80
- Pure-Flo® Supreme 55
- Pure-Flo® Select 350
- Pure-Flo® Select 450
- Bleaching Earth for Edible Oil Refining
- Adsorbents for Oil Purification & Refining
- Adsorbents for Biodiesel Feedstock Pretreatment
- Request SDS, TDS or COA documentation
- Request technical assistance or a volume quote
Pure-Flo® Supreme B81 Bleaching Earth for Edible Oils
