Select 350 Selective Silicate Adsorbent for Oils & Biodiesel
Select 350 Selective Silicate Adsorbent for Oils & Biodiesel - Pallet - 40 x 50lb bags is backordered and will ship as soon as it is back in stock.
Couldn't load pickup availability
Bulk pricing (2+ pallets): 2–3 @ $3,749 ea • 4+ @ $3,449 ea. Live freight quotes at checkout.
| Minimum Qty | Discount |
|---|---|
| 2 + | $3,749.00 |
| 4 + | $3,449.00 |
Overview
Select 350 by Oil-Dri is a finely divided selective silicate adsorbent positioned for the reduction of soaps, phospholipids, trace metals, and other polar impurities in edible-oil and biofuel-processing applications.
Select 350 is commonly evaluated as a pretreatment medium before bleaching, polishing, or downstream refining. By targeting impurities that may interfere with processing, product stability, filtration, or specification compliance, it can complement bleaching earth and other purification steps in an integrated treatment system.
Minimum order: 2 pallets.
- 2–3 pallets: $3,749 per pallet
- 4+ pallets: $3,449 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.
Primary applications
- Edible-oil pretreatment: Reduction of soaps, phospholipids, trace metals, and other polar impurities before downstream refining or polishing
- Biodiesel feedstocks: Pretreatment of vegetable oils, recycled oils, and other compatible feedstocks where impurity reduction may support more consistent processing
- Pretreatment before bleaching: Use ahead of bleaching earth to target selected contaminants before broader color and impurity removal
- Dry-wash process evaluation: Adsorptive cleanup in compatible biodiesel-treatment systems designed to reduce reliance on conventional water washing
- Industrial oil purification: Targeted treatment where soaps, trace elements, or phospholipids affect downstream process performance
- Feedstock conditioning: Preparation of oils for subsequent bleaching, filtration, refining, conversion, or finishing operations
Why choose Select 350?
- Selective impurity removal: Positioned to target soaps, phospholipids, metals, and polar contaminants
- Pretreatment utility: Can be evaluated before bleaching clay or other downstream purification media
- Process flexibility: Applicable to compatible edible-oil, biodiesel, and industrial-oil treatment systems
- Fine powdered form: Provides broad contact with the treated liquid during mixing
- Integrated treatment potential: Allows processors to evaluate the Select dosage and bleaching-earth dosage together
- Industrial packaging: Available in bagged pallets and 2,000 lb supersacks
- Technical documentation support: Manufacturer documents can be requested for qualification before purchase
Typical reference properties
| Product type | Selective silicate adsorbent |
|---|---|
| Primary function | Pretreatment and targeted removal of soaps, phospholipids, trace metals, and polar impurities |
| Physical form | Fine mineral powder |
| Free moisture | Less than 5.0% by weight at 105°C |
| pH | 3.6 at 5% solids in deionized water |
| Tamped density | 37.0 lb/ft³ (approximately 593 g/L) |
| Particle size | 62% passing 325 mesh; less than 45 microns |
| Manufacturer | Oil-Dri Corporation of America |
Technical-data note: The values above are retained from previously supplied product information but have not yet been independently confirmed against a current publicly available Oil-Dri Select 350 TDS or lot-specific COA. Confirm current manufacturer specifications before qualification, purchase, or process design.
How Select 350 fits into a treatment process
| Process stage | Potential role |
|---|---|
| Incoming oil or feedstock | Characterize soaps, phospholipids, moisture, trace elements, color, and other impurities |
| Select 350 pretreatment | Target selected polar impurities, soaps, phospholipids, and trace metals |
| Bleaching-earth treatment | Broader reduction of color bodies, chlorophyll, oxidation products, and additional impurities |
| Filtration | Remove spent adsorbent and retained contaminants from the treated oil |
| Downstream refining or conversion | Continue processing toward the required finished-oil or fuel specification |
The exact process sequence depends on the oil, feedstock, equipment, contaminants, and finished-product requirements.
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 published bagged-pallet pricing
- Bagged material: Forty individual 50 lb bags per pallet
- Bulk material: Supersacks available by request, subject to current supplier availability
- Lead time: Confirmed at quotation or order placement
- Freight: Nationwide LTL shipping with live checkout rates for eligible configurations
- Volume purchasing: Contact us for recurring supply, multi-pallet requirements, or delivered pricing
Application and trial guidance
The appropriate Select 350 dosage depends on the oil or feedstock, incoming soap content, phospholipid concentration, trace-metal profile, moisture level, mixing conditions, contact time, temperature, filtration equipment, and downstream specification.
- Begin with controlled bench trials using the actual oil or feedstock
- Measure the untreated feed before establishing a treatment target
- Evaluate multiple Select 350 dosage rates rather than relying on one universal treatment level
- When used before bleaching earth, optimize both adsorbent dosages together
- Measure soap reduction, phospholipids, trace elements, filtration behavior, oil retention, and downstream performance
- Confirm that the treated oil meets all applicable process and finished-product requirements
No universal dosage is stated on this page because the appropriate treatment rate must be established through process testing and current manufacturer guidance.
Select 350 compared with bleaching earth
| Media type | Primary treatment emphasis |
|---|---|
| Select 350 | Selective pretreatment for soaps, phospholipids, trace metals, and other polar impurities |
| Bleaching earth | Broader color reduction, chlorophyll adsorption, oxidation-product removal, and oil polishing |
| Combined treatment | Sequential or integrated impurity removal where one medium alone does not meet the process target efficiently |
The best-performing treatment sequence should be established through trials with the actual feedstock. Select 350 should not automatically be treated as a direct substitute for Supreme 55, Supreme B81, B80, or another bleaching clay.
Handling & storage
- Store unused material in a dry, protected location
- Keep bags or supersacks closed until needed
- Minimize airborne dust during transfer, mixing, and handling
- Use appropriate ventilation and personal protective equipment as directed by the current SDS
- Avoid contact with incompatible materials identified in current manufacturer documentation
- Handle fresh and spent adsorbent according to the treated oil, facility procedures, and applicable regulations
Important: A current manufacturer SDS should be reviewed before handling or use. Do not rely on this product page as a substitute for safety documentation.
Shipping & support
- Nationwide shipping: LTL freight service available throughout the United States
- Freight options: Liftgate, delivery appointment, and other accessorial services may be selected where available
- Bulk purchasing: Volume pricing and recurring supply support are available for qualified industrial customers
- Documentation assistance: Sorbents Direct can request current manufacturer documents before order placement
- Technical assistance: Share your feedstock, contaminant data, process flow, and target specifications for product-selection guidance
Why buy from Sorbents Direct?
Industrial adsorbents and filtration media are often sold with limited technical information, unclear freight costs, or multiple rounds of quotation. Sorbents Direct was built to make industrial-material sourcing more transparent and practical.
- Transparent pricing on qualifying package sizes and volume tiers
- Live LTL freight quotes at checkout on eligible shipments
- Manufacturer documentation including SDS, TDS, and COA when available
- Technical product guidance for pretreatment, clarification, filtration, and adsorption applications
- Bulk purchasing support for recurring and multi-pallet requirements
- Real support from people who understand industrial materials
Documentation & quality support
Documentation requested for Select 350 may include:
- Safety Data Sheet (SDS)
- Technical Data Sheet or product bulletin
- Certificate of Analysis, when available for the supplied production lot
- Packaging and freight information
- Manufacturer confirmation of current technical properties
- Product-selection and application assistance
Contact us if documentation is required for evaluation, supplier qualification, or purchase approval.
Visit our Documentation Center or contact Sorbents Direct to discuss your feedstock, process conditions, packaging preference, and documentation requirements.
Need help designing a pretreatment trial?
Adsorbent selection depends on the feedstock, soap concentration, phospholipids, metals, moisture, acidity, treatment temperature, contact time, filtration system, and downstream specification. Sorbents Direct can help compare Select 350 with Select 450 and available Oil-Dri bleaching-earth grades for controlled process evaluation.
Questions & answers
What is Select 350?
Select 350 is a finely divided selective silicate adsorbent positioned for pretreatment and impurity removal in compatible edible-oil, biodiesel, and industrial-oil processes.
What impurities does Select 350 target?
Select 350 is positioned for reducing soaps, phospholipids, trace metals, and other polar impurities that can interfere with downstream refining, bleaching, conversion, or specification compliance.
Is Select 350 a bleaching clay?
No. Select 350 is described as a selective silicate adsorbent and is generally positioned as a targeted pretreatment medium. Bleaching earth has a broader emphasis on color, chlorophyll, oxidation products, and oil polishing.
When should Select 350 be used before bleaching earth?
It may be evaluated before bleaching when soaps, phospholipids, metals, or other polar impurities are creating problems that bleaching clay alone does not remove efficiently.
Can Select 350 be used in biodiesel processing?
Select 350 may be evaluated for pretreatment or adsorptive cleanup of compatible biodiesel feedstocks. Suitability depends on the feedstock, process configuration, contaminants, and required finished-fuel specification.
What is the difference between Select 350 and Select 450?
Both products are positioned as selective silicate adsorbents for soaps, phospholipids, metals, and related impurities. The appropriate grade should be selected using current Oil-Dri technical guidance and comparative trials with the actual feedstock.
What dosage should I use?
There is no universal dosage for all oils or feedstocks. Establish the treatment rate through controlled bench trials based on contaminant levels, process conditions, filtration performance, and downstream specifications.
What is the minimum order?
The current minimum order for published bagged-pallet pricing is two pallets, or 4,000 lb total.
How is each pallet configured?
Each bagged pallet contains forty 50 lb (22.68 kg) bags for a total net weight of 2,000 lb, or approximately 907 kg.
Is Select 350 available in supersacks?
Yes. A 2,000 lb supersack is available by request, subject to current supplier availability. Contact Sorbents Direct for pricing and freight.
Are the technical values on this page manufacturer verified?
The displayed reference values were retained from previously supplied product information, but Sorbents Direct has not yet confirmed them against a current publicly available Oil-Dri Select 350 TDS or lot-specific COA. Request current documentation before qualification or process design.
Is freight included in the pallet price?
No. Freight is separate and may be calculated at checkout using live LTL rates. Available options may include liftgate service and delivery appointments.
What documentation is available?
Sorbents Direct can request the current SDS, technical product information, and lot documentation from the supplier or manufacturer. Availability should be confirmed before purchase when documentation is required.
Related products & resources
Select 350 Selective Silicate Adsorbent for Oils & Biodiesel
