Determine the necessary mass, volume, or concentration for preparing a solution.
Dilution Calculator
Determine the dilution needed to prepare a stock solution.
Reconstitution Calculator
Avis
Avis des clients
Application Protocols
Validated, item-specific protocols are not provided for this SKU. The following generic workflow illustrates typical magnetic adsorbent use; adjust to your chemistry and consult the CoA/Spec Sheet when available.
Generic magnetic adsorption workflow (general guidance):
Equilibration: Resuspend the sorbent by vortexing/sonication. Pre-wash 2× with the intended working medium (e.g., buffer or solvent) to remove fines and equilibrate the surface.
Binding: Add sorbent at an empirically determined ratio (e.g., 5–20 mg per mL of solution). Incubate 5–20 min with agitation.
Magnetic capture: Place a strong neodymium magnet against the vessel. Allow particles to clear (typically 0.5–2 min for µm beads). Carefully decant or pipette the supernatant.
Wash: Add fresh medium, resuspend, mix 1–2 min, recapture magnetically, and remove wash. Repeat 1–3× as needed.
Elution/regeneration: Introduce an eluent tailored to the binding mechanism (e.g., pH shift, high salt, competitive ligand, or organic solvent). Collect eluate. Optionally neutralize or buffer-exchange.
QC: Analyze fractions for target recovery and potential leachables (e.g., by LC–MS, ICP-MS). Record separation time and capacity for reproducibility.
Notes:
For viscous or particulate-laden samples, pre-clarify to improve kinetics.
For nanoparticle slurries, avoid strong magnetic gradients during binding to prevent wall fouling.
Sterility/endotoxin requirements, if applicable, are Not specified for this item.
Biological Roles
Biological role: Not applicable to a synthetic magnetic adsorbent as a material. This product is intended for research use only.
General context (literature/practice):
Magnetic particles functionalized with specific ligands are widely used in biochemistry for the selective capture of nucleic acids, proteins, cells, and organelles. These applications leverage affinity tags (e.g., His-tag via IMAC, biotin–streptavidin, antibody–antigen) or general interactions (ion exchange, hydrophobic interaction).
In cell processing, magnetic beads can enable gentle separations under near-physiological conditions, maintaining viability and activity when appropriate coatings are used.
For metabolomics/proteomics sample prep, magnetic solid-phase extraction streamlines cleanup, desalting, and fractionation prior to LC–MS.
Caveats:
Cytotoxicity and biocompatibility depend on surface chemistry, particle size, and coating integrity. Without item-specific data, assume research-only and perform compatibility tests for any biological application.
Endotoxin/bioburden levels, preservative content, and sterility are critical for sensitive bioassays but are Not specified for this item; consult the CoA/Spec Sheet.
No therapeutic or diagnostic claims are made or implied. This product is for laboratory research use only.
Buffer Applications
Magnetic adsorbent performance is highly sensitive to buffer composition, pH, and ionic strength. Item-specific buffer compatibility is Not specified for this item; the following are general, literature-based practices.
pH range: Many iron oxide–based sorbents are stable between pH ~3–10. Choose pH to favor binding—e.g., below/above the adsorbent’s and analyte’s pKa to exploit electrostatics.
Common buffers: Phosphate (pH 6–8), Tris (pH 7–9), acetate (pH 4–5.5), citrate (pH 3–6). Note that phosphate and citrate can weakly complex metals; verify effects on metal-ion capture.
Ionic strength: 50–500 mM NaCl modulates non-specific interactions; higher salt can suppress electrostatics and enhance hydrophobic binding in mixed-mode systems.
Additives: 0.01–0.1% nonionic surfactants may improve wetting and reduce aggregation; avoid detergents that compete with target binding.
Organic modifiers: 5–50% ACN or MeOH adjusts hydrophobic interactions for small-molecule cleanup; ensure coating compatibility.
Practical tips:
Pre-equilibrate the sorbent in working buffer for 5–10 minutes with gentle mixing.
Optimize solid loading, contact time (1–30 min), and washing stringency to balance capacity and selectivity.
For elution, use counter-ions, pH shifts, imidazole (for IMAC), or chaotropes depending on the binding mechanism.
Buffer recipes, exact capacities, and stability limits for SKU M121913 are Not specified; confirm experimentally and consult the CoA/Spec Sheet.
Green Alternatives
Magnetic adsorbents can improve process sustainability by reducing energy and consumables associated with filtration and centrifugation. While item-specific attributes are unknown, the following green chemistry considerations apply broadly.
Benefits (general):
Reduced solid–liquid separation footprint: Magnetic decantation often replaces single-use filter media and lowers centrifuge energy use.
Reusability: Properly regenerated sorbents can be cycled multiple times, decreasing solid waste.
Process intensification: Enables rapid, room-temperature operations with short contact times, reducing heating/cooling demands.
Trade-offs:
Core/shell manufacture may involve acids, bases, or organic solvents; greener synthesis routes (e.g., aqueous co-precipitation, sol–gel with benign solvents) are preferred.
Potential metal or ligand leaching can create downstream waste; rigorous QC and regeneration protocols mitigate this.
Comparison (illustrative; literature):
Conventional adsorbents (silica, activated carbon): No magnetic recovery; rely on filtration. Often high surface area but slower handling.
Magnetic silica/carbon composites: Comparable surface chemistry with faster separations; slightly reduced capacity per gram due to inert magnetic mass.
Centrifugation-based separations: Equipment- and energy-intensive; magnetic capture eliminates rotor disposables and reduces process time.
Greener practice tips:
Use water or low-toxicity solvents when possible; recycle eluents.
Implement closed-loop regeneration with minimal volumes and pH swings.
Validate sorbent lifetime to maximize reuse before disposal.
Item-specific environmental data (e.g., recyclability, E-factors) are Not specified for this item.
Pharmaceutical Uses
No pharmacopeial status or excipient designation is provided for this item. Pharmaceutical/bioprocess uses, if any, must be confined to research and development.
General manufacturing/formulation contexts (literature/practice):
Bioprocess development: Magnetic adsorbents can be used at bench scale for rapid screening of capture and polishing conditions (e.g., ion exchange, IMAC, HIC) before scaling to chromatographic resins.
Catalyst recovery: Magnetic supports bearing homogeneous/heterogeneous catalysts enable simple magnetic decantation in process chemistry R&D, aiding impurity control.
Impurity scavenging: Post-reaction removal of metal catalysts (Pd, Cu, Ni) or residual reagents by chelating/functionalized magnetic sorbents.
Analytical QC: Magnetic SPE for sample cleanup prior to HPLC/LC–MS methods during stability or release testing development.
Important notes:
Regulatory expectations for leachables/extractables, bioburden, and trace metal shedding are stringent in GMP settings. These attributes are Not specified for this item; use only for non-GMP research unless appropriate documentation is obtained.
No therapeutic, diagnostic, or clinical claims are made for this product. It is for research use only.
Physical Properties
Item-specific physicochemical data are not supplied for this SKU.
Appearance: Not specified for this item; refer to CoA/Spec Sheet.
Density, particle size, BET surface area, pore size: Not specified for this item; refer to CoA/Spec Sheet.
Solubility: Insoluble solid; dispersible in selected liquids (general behavior for particulate sorbents). Item-specific dispersion media Not specified for this item; refer to CoA/Spec Sheet.
Melting/boiling point: Not applicable to composite particulate adsorbents as discrete values.
General/literature property ranges for magnetic adsorbents (examples; not specifications):
Magnetic core: Fe3O4 or γ-Fe2O3 with saturation magnetization typically 45–90 emu/g (core-only; functionalization lowers apparent Ms).
Surface area: Silica- or carbon-coated magnetic sorbents often show 20–800 m²/g depending on porosity and processing.
Particle size: Nanoparticles 20–200 nm (colloids) vs. magnetic beads 1–100 µm (rapid decantation, lower backpressure).
Dispersion behavior: Stable suspensions usually require ionic strength control and/or surfactants/polymers; zeta potential dictates aggregation (literature).
pH stability: Iron oxide cores are generally stable ~pH 3–10; extreme acid/base and complexing agents (e.g., EDTA at high pH) may induce dissolution or leaching (literature).
Refractive index, logP, pKa: Not meaningful for heterogeneous solids; Not specified for this item. Always validate with small-scale tests under intended conditions.
Quality and Grades
Grade/purity: Not specified for this item; refer to CoA/Spec Sheet.
How grades relate to magnetic adsorbents (general guidance):
Technical grade: Suitable for routine separations or wastewater R&D; specifications may include nominal particle size, qualitative magnetization, and basic adsorption capacity tests.
Analytical/reagent grade: Tighter controls on leachables (metals/organics), particle size distribution, and batch-to-batch adsorption capacity. Useful for sample prep (SPE, dispersive SPE) where background must be low.
Biochemical grade: Low endotoxin/bioburden, sterile or sterilizable carrier, and validated binding capacity for biomolecules; documentation of residual surfactants/preservatives.
Typical QC attributes (what to look for on a Spec Sheet/CoA):
Particle size (D10/D50/D90), polydispersity index for colloids, or sieve cuts for beads.
Saturation magnetization and magnetic separation time in a defined field.
BET surface area, pore volume, and pore size distribution (if porous).
Surface chemistry titration (e.g., mmol/g of –COOH or –NH2) and binding capacity to model analytes.
Leachables/extractables: Fe, other metals, or ligand bleed into water/organic solvents.
Bioburden/endotoxin (if intended for biomolecule handling).
For SKU M121913, none of the above specifications are provided here. Please consult the CoA/Spec Sheet for item-specific grade definitions, acceptance criteria, and recommended certification tests.
Reaction and Applications
Magnetic adsorbents enable rapid solid–liquid separations via an external magnet, eliminating filtration/centrifugation in many workflows. With no item-specific functionalization disclosed, the following use cases are general (literature/practice):
Sample preparation and cleanup:
Dispersive SPE for pesticides/drug residues from complex matrices; magnetic capture simplifies decanting and solvent exchange.
Protein/DNA/RNA isolation when coated with affinity ligands (e.g., carboxyl, amine, IMAC-type chelators, streptavidin).
Environmental remediation R&D:
Adsorption of heavy metals, dyes, and PFAS surrogates (when surface modified accordingly), with regeneration by pH/salt/solvent changes.
Catalysis and scavenging:
Immobilized catalysts (e.g., Pd, Cu, organocatalysts) supported on magnetic cores for easy recovery and reuse.
Post-reaction scavenging of metal residues or excess reagents via chelating/ionic surfaces.
Synthetic operations:
Phase-switchable workups: bind/strip catalysts, acids/bases, or protecting-group byproducts, then magnetically remove sorbent.
Practical tips:
Pre-condition the sorbent in the working medium to equilibrate swelling/charge.
Optimize solid loading (e.g., 5–50 mg/mL slurry in small-molecule cleanup; literature) and contact time (1–30 min with agitation).
Use appropriately strong neodymium magnets; separation typically completes in seconds to minutes for micron-scale beads.
Regeneration: Elute with counter-ions, pH shift, or solvent; verify retention of capacity and check for leachables after cycles.
Note: Specific capacities, kinetics, and selectivity for SKU M121913 are Not specified; determine empirically.
Reaction Conditions
No item-specific operating conditions are provided. The following are general, literature-based conditions for adsorption and magnetic separation workflows:
Medium: Water/buffer for biomolecules and metal ions; alcohol/water or ACN/water for small-molecule cleanup; nonpolar organics for hydrophobic coatings. Compatibility must be verified.
Solid loading: 0.5–50 mg sorbent per mL of solution depending on target concentration and capacity.
Contact time: 1–30 minutes with vortexing, orbital shaking, or end-over-end mixing to overcome diffusion limits; nanoparticles equilibrate faster than micron-scale beads.
Temperature: Ambient (20–25°C) is typical; elevated temperatures can affect binding equilibria and coating stability—use cautiously.
Separation: Neodymium magnet; capture in 10–120 seconds for µm beads or faster for high-Ms particles. Decant supernatant carefully to avoid loss.
Washing: 1–3 quick washes with working medium or a low-strength eluent to remove non-specific adsorbates.
Elution/regeneration: Adjust pH/ionic strength, add competitive ligands (e.g., imidazole for IMAC, high salt for ion exchange), or use solvent gradients for hydrophobic interactions.
Reuse: Track capacity across cycles; if capacity drops >10–20%, consider refunctionalization or replacement.
Expected yields/capacities: System-specific; consult literature for analogous chemistries. For this SKU, capacities, kinetics, and solvent limits are Not specified; optimize empirically.
Safety and Handling
GHS classification, signal word, and H/P statements: Not specified for this item; refer to the product SDS for authoritative safety information.
General laboratory safety guidance for magnetic particulate adsorbents (literature/practice):
PPE: Use lab coat, safety glasses, and appropriate gloves. For fine powders or aerosolizable suspensions, handle in a fume hood or with local exhaust; consider a particulate respirator per institutional policy.
Dusts/respirability: Nanopowders can be inhalation hazards; avoid generating dust. Wet methods (slurries) reduce airborne risk.
Magnetic field hazards: Strong permanent magnets can pinch or attract ferromagnetic tools. Keep pacemaker/implanted medical device warnings in mind per institutional EHS guidelines.
Incompatibilities: Avoid strong oxidants or complexing agents that can degrade coatings or mobilize iron (e.g., concentrated chelators at high pH). Acid dissolution of iron oxides may release soluble iron.
Thermal stability: Most iron oxide cores are thermally robust; organic shells/ligands can degrade on heating—avoid unnecessary drying/baking unless specified by the supplier.
Spill response: For dry powders, gently cover with damp disposable towels to suppress dust and collect with non-magnetic tools; for slurries, absorb with inert material. Dispose of according to local regulations.
First aid (overview): If inhaled—fresh air; skin/eye contact—rinse with water; ingestion—rinse mouth. Seek medical attention if symptoms occur. Defer to SDS for details.
Storage conditions: Room temperature (per Product Data). Protect from moisture, extreme pH, and strong magnetic fields that may promote agglomeration.
Solvent Selection
This product is an adsorbent, not a solvent. Solvent/medium choice is nevertheless critical for dispersion, adsorption performance, and magnetic handling.
General guidance (literature/practice):
Polarity and ionic strength: Aqueous buffers (pH 3–10) are common; ionic strength screens electrostatics and can reduce non-specific binding. Organic cosolvents (e.g., up to 20–50% v/v MeOH, EtOH, ACN) can modulate hydrophobic interactions; verify compatibility with the coating.
pH control: Surface charge of iron oxide/silica and many ligands is pH-dependent; adsorption of acids/bases/metal ions is strongly affected by buffer pH.
Viscosity/wetting: Add low levels of surfactant or polymer (e.g., 0.01–0.1% w/v nonionic) to improve wetting and suppress aggregation if compatible.
Avoid: Highly chelating solutions at elevated pH (can dissolve cores), strong oxidants/reductants that attack organic shells, and halogenated solvents for polymer-coated beads unless verified.
Comparison (general):
Water/buffer: Best for biomolecule and metal-ion capture; fast magnetic response; minimal safety concerns.
Alcohol/water mixes: Tune hydrophobic binding; faster drying of collected solids; may shrink/expand polymer shells.
Pure organics (ACN, MeOH, toluene): Applicable to hydrophobic or organophilic coatings; check swelling and magnetic response.
Item-specific solvent compatibility: Not specified for this item; validate on a small scale and consult the CoA/Spec Sheet.
Item-specific details (stabilizers, preservatives, hydration state) are Not specified for this item; refer to CoA/Spec Sheet.
General guidance for magnetic adsorbents (literature/practice):
Keep container tightly closed to minimize moisture uptake and contamination. Store away from strong magnetic fields that can promote irreversible agglomeration.
If supplied as a dry powder: Store in a desiccated environment at ambient temperature. Before use, disperse by adding the intended medium and briefly sonicate or vortex to break soft agglomerates.
If supplied as an aqueous slurry: Prevent freezing unless validated; freezing can fracture beads or delaminate coatings. Maintain headspace to accommodate thermal expansion.
If bioburden-sensitive applications are anticipated: Filter sterilize compatible buffers and consider adding a low level of preservative if compatible with the sorbent chemistry (not item-specific advice).
Avoid prolonged exposure to extreme pH, strong chelators at high pH, and oxidizing agents during storage.
Freeze–thaw: Generally avoid repeated freeze–thaw cycles for slurries; for dry materials, no freeze–thaw concern.
Reconstitution: Not specified for this item; if provided dry, prepare a homogenous slurry at a convenient concentration (e.g., 10–100 mg/mL) in the working medium, equilibrate 5–10 min, and mix thoroughly before use.
Structure and Identity
A generic magnetic adsorbent is typically a composite solid that couples a magnetic core with an adsorption-active surface. Item-specific identifiers are not provided for this SKU.
SKU: M121913 (Magnetic adsorbent)
CAS: Not specified for this item; refer to CoA/Spec Sheet.
Molecular formula: Not specified for this item; refer to CoA/Spec Sheet.
Molecular weight: Not specified for this item; refer to CoA/Spec Sheet.
InChIKey / SMILES: Not applicable for undefined composite materials; Not specified for this item; refer to CoA/Spec Sheet.
Structural features (general, literature):
Core: Commonly magnetite (Fe3O4) or maghemite (γ-Fe2O3) nanoparticles providing superparamagnetic response for rapid magnetic capture.
Shell/surface: Often silica, polymer (e.g., polystyrene, PEG, dextran), or carbon coatings to provide stability and enable functional groups.
Functional moieties: Typical ligands include –OH, –COOH, –NH2, quaternary ammonium, thiol, imidazolyl, or tailored chelators/ion exchangers for selective adsorption (literature examples).
Morphology: Spherical or irregular aggregates; size may range from tens of nanometers (nanospheres) to tens/hundreds of microns (magnetic beads) depending on application (literature).
2D/“on-paper” description (general):
A magnetic iron oxide core (inorganic) encased by an organic/inorganic shell bearing polar or ionic functional groups distributed across the surface, designed to interact with target solutes via electrostatics, chelation, hydrophobic interactions, hydrogen bonding, or affinity binding.
Note: Because no compositional or surface chemistry data are provided for this item, users should consult the CoA/Spec Sheet for exact identity and functionalization.
Synthetic Utility
Magnetic adsorbents serve as functional supports and scavengers in organic synthesis, enabling facile phase separation by magnet rather than filtration. Because SKU-specific surface chemistry is unknown, the following outlines general strategies (literature/practice):
Scavenging excess reagents and byproducts:
Acidic/basic sites neutralize amines/acids; quaternary ammonium or sulfonic groups capture anions; amines capture acids and some electrophiles.
Thiol/imidazole/aminophosphine-functional surfaces chelate soft metal centers (Pd, Pt, Cu) to reduce metal residues.
Heterogeneous catalysis on magnetic supports:
Immobilize Pd, Ni, Cu, Au nanoparticles for cross-couplings, hydrogenations, or click chemistry; magnetic recovery simplifies recycling.
Bind phase-transfer catalysts or ligands post-reaction.
Adsorb colored impurities and polymeric tars to clarify solutions.
Flow and parallel synthesis:
Magnetic beads used in batch–flow hybrid setups for easy cartridge recharging and minimal pressure drop (for µm-sized beads).
Practical guidance:
Dose 5–20 wt% relative to solute for scavenging, agitate 5–60 min, then clear with a strong magnet.
Verify no sorbent bleed into product by LC–MS/ICP-MS.
Regenerate with appropriate eluent (pH shift, chelator, or solvent) and dry under mild conditions.
Item-specific loading, capacity, and solvent tolerance: Not specified for this item; determine empirically.
Target Specificity
Target, epitope, clone, isotype, and species reactivity are not applicable to this product category. No antibody or biomolecular targeting information is provided for SKU M121913.
Item-specific affinity ligands or functional groups that would dictate selectivity are Not specified for this item; refer to CoA/Spec Sheet.
Users should determine target specificity experimentally based on their application and the sorbent’s disclosed surface chemistry (if provided).
We use cookies to ensure the website functions properly and, where permitted, to improve your experience. You can manage your preferences at any time in Settings. Learn more in our Cookie Policy.
Shall we send you a message when we have discounts available?
Remind me later
Thank you! Please check your email inbox to confirm.
Products are supplied to verified businesses, institutions, and qualified professionals for research and development use only. Not for use in humans, animals, diagnosis, or therapy.
G2228796