Magnetic adsorbent - Matrix:SiO2,Surface group:-NH2,Size:0.1-1um,unit:5mg/ml

Cat. No.: M121910

GRADE & PURITY Matrix:SiO2,Surface group:-NH2,Size:0.1-1um,unit:5mg/ml

Storage

Room temperature

Shipped In

Normal

Specifications

Spécifications et pureté

Matrix:SiO2,Surface group:-NH2,Size:0.1-1um,unit:5mg/ml

Conditions de stockage de stockage

Room temperature

Expédié en

Normal

Application Protocols

No item-specific tested applications or protocols are provided for this listing. The following generic protocols illustrate common uses of magnetic adsorbents (for guidance only; not item-specific):

• General scavenging (small molecules)
  • Dilute crude to manageable viscosity; add a pre-equilibrated portion of adsorbent; agitate 10–60 min; magnetically separate; analyze supernatant; repeat if needed; wash adsorbent and dispose or regenerate.
• Nucleic acid clean-up (classical SPRI-style, literature)
  • Mix sample with PEG/NaCl binding buffer; add magnetic adsorbent designed for nucleic acids; incubate; capture magnetically; wash with 70–80% ethanol; air-dry briefly; elute with nuclease-free water or low-salt buffer.
• Metal removal (workup)
  • Add thiol/amine/chelating magnetic scavenger to organic solution containing residual metal; stir; sample for ICP until target is met; magnetically decant; rinse organic phase through a brief contact/wash cycle.

Always validate and optimize for your specific adsorbent and matrix. For detailed, product-validated protocols, refer to the CoA/Spec Sheet.

Biological Roles

This product is a materials-based adsorbent and does not have an intrinsic biological role. The following describes common biochemistry-related uses of magnetic adsorbents in general (not item-specific):

• Affinity enrichment
  • Chelator- or ligand-functionalized magnetic supports are widely used to isolate His-tagged proteins (IMAC), biotinylated species (streptavidin), or antibodies/antigens.
• Nucleic acid purification
  • DNA/RNA bind to coated magnetic particles under crowding salts or chaotropes; size selection is modulated by PEG/NaCl ratios (literature). Magnetic capture enables wash/elute cycles without centrifugation.
• Cell and organelle separations
  • Antibody- or lectin-coated magnetic beads enable immunomagnetic separation of cells or subcellular fractions.
• Enzyme immobilization
  • Magnetic carriers allow recovery and reuse of enzymes in biocatalysis, stabilizing activity and simplifying process steps.

Limitations and compatibility

• Surface chemistry dictates biocompatibility; cationic surfaces may be cytotoxic, while hydrophilic/neutral coatings are gentler.
• Preservatives (e.g., azide) present in some slurries can inhibit enzymes—verify on the CoA/SDS before sensitive applications.

No medical, diagnostic, or therapeutic uses are intended or implied. For research use only (as stated in the product data).

Buffer Applications

As a solid adsorbent, this material does not function as a buffer itself. However, buffer selection strongly influences performance in biomolecule separations using magnetic adsorbents (general guidance; not item-specific):

• Common buffer systems
  • Phosphate-buffered saline (PBS), Tris, HEPES: routine dispersion and washing; ionic strength and pH tune electrostatic interactions.
  • Chaotropic buffers (guanidinium, urea) or crowding systems (PEG/NaCl): promote nucleic acid binding to coated surfaces in SPRI-like protocols.
  • Imidazole-containing buffers: competitive elution for IMAC-based protein capture.
• Practical tips
  • Filter/degass buffers to minimize particulates and bubbles that impede magnetic capture.
  • Adjust pH to modulate binding/desorption according to surface functional groups (e.g., protonate amines for cationic exchange; deprotonate carboxylates for anionic exchange).
  • Include mild detergents (e.g., 0.01–0.1% nonionic, literature) to reduce nonspecific adsorption when appropriate for your assay.
• Compatibility cautions
  • Strong oxidants or chelators can strip or deactivate certain surface ligands or metal chelates; reserve them for regeneration steps if needed.

For exact buffer compatibility and recommended compositions, refer to the product’s CoA/Spec Sheet and SDS.

Green Alternatives

Magnetic adsorbents can advance greener lab practices by simplifying phase separations and reducing consumables, but tradeoffs exist. The points below are general to the class and not item-specific.

Advantages (greener aspects)

• Eliminates filtration media and centrifugation for many workflows, lowering energy use and solid waste.
• Enables solvent minimization in workups by direct magnetic capture and concentrated washing.
• Facilitates catalyst recycling when used as magnetically retrievable supports.

Considerations/tradeoffs

• Synthesis of magnetic composites may involve surfactants, crosslinkers, or solvents with environmental footprints.
• Disposal of spent adsorbent must account for captured contaminants (e.g., precious metals, halogenated organics), potentially classifying waste as hazardous.

Comparison (general; not item-specific)

• Magnetic adsorbent vs. traditional filtration
  • Pros: No filter aids; faster; scalable from microtubes to liter scales; reduced clogging.
  • Cons: Requires magnets and compatible vessels; performance depends on magnetic content and particle size.
• Magnetic adsorbent vs. centrifugation-based separations
  • Pros: Lower energy and equipment burden; gentler on shear-sensitive biomolecules.
  • Cons: May be slower for nanoscale particles without sufficient magnetic moment; viscosity can hinder capture.

Optimization tips

• Choose aqueous-compatible, low-toxicity buffers where possible; reuse regeneration solutions after polishing.
• Recover and recycle precious metals from loaded scavengers to close materials loops.

Consult the CoA/SDS to ensure solvent and pH compatibility for your specific magnetic adsorbent.

Pharmaceutical Uses

This product is supplied for research use only. It is not intended for human or veterinary use, nor for clinical or diagnostic applications.

General, non-clinical roles for magnetic adsorbents in pharmaceutical R&D and manufacturing (not item-specific):

• Process aids
  • Scavenging of residual homogeneous catalysts (e.g., Pd, Pt, Ru) and organic impurities during API intermediate workups to meet impurity specifications.
  • Removal of color bodies and particulates from reaction streams via magnetic capture instead of filtration.
• Bioprocess development
  • Rapid prototyping of capture/polishing steps for proteins and nucleic acids using magnet-compatible formats.
• Analytical sample preparation
  • Magnetic dSPE clean-up for bioanalytical assays (e.g., LC–MS), reducing matrix effects.

Regulatory and quality notes

• Pharmacopeial status: Not specified for this item.
• Extractables/leachables and bioburden/endotoxin limits are application- and grade-dependent; obtain supporting documentation (CoA/Spec Sheet, SDS) before use in GMP environments.

If deployment is contemplated in regulated contexts, perform full compatibility, residuals, and capacity studies under your quality system.

Physical Properties

Item-specific physical constants are not provided for this listing.

• Item-specific values

  • Appearance: Not specified for this item; refer to CoA/Spec Sheet.
  • Density/apparent density: Not specified for this item; refer to CoA/Spec Sheet.
  • Particle size / BET surface area / pore volume: Not specified for this item; refer to CoA/Spec Sheet.
  • Solubility: Insoluble solid support (general expectation); item-specific dispersibility not specified.

• Typical properties for magnetic adsorbents (literature/general; not item-specific)

  • Magnetic cores (Fe3O4) exhibit superparamagnetism for nanoparticles (<~20 nm) and ferrimagnetism for larger domains; saturation magnetization of magnetite nanoparticles typically 40–70 emu/g (literature), reduced from bulk due to surface effects.
  • Common support matrices: silica (density ~2.0 g/mL), crosslinked polystyrene/divinylbenzene, polyacrylamide, chitosan, carbon, and hybrid organic–inorganic frameworks; porosity and surface areas vary widely (tens to several hundred m2/g, literature).
  • Thermal stability depends on shell: silica-coated materials can tolerate elevated temperatures; polymer-coated beads generally limited by glass transition/decomposition temperatures (often <150–200 °C, literature). Magnetic cores can oxidize to γ-Fe2O3 upon heating in air.
  • Dispersibility is governed by surface charge and medium ionic strength; zeta potential often tuned by pH via ionizable surface groups.

• Practical notes

  • Settling rate and magnetic response affect handling; stronger magnetic content shortens capture time but may decrease surface area per gram.
  • Viscous media and high solids loads slow magnetic separation; using wider-bore vessels and strong neodymium magnets accelerates capture.

For precise specifications (particle size, functional group loading, magnetization), consult the CoA/Spec Sheet for the supplied lot.

Quality and Grades

• Grade/purity: Not specified for this item; refer to CoA/Spec Sheet.

Interpreting grades for magnetic adsorbents (general guidance):

• Research grade materials are intended for laboratory R&D and method development; they balance performance with cost and may have broader particle-size distributions and functional-group loadings.
• Chromatography or high-performance grades typically exhibit tighter particle size control, defined pore structures, and low extractables/bleed—important for analytical workflows.
• Bioseparation grades may be manufactured under enhanced controls to minimize endotoxin/bioburden and to ensure compatibility with aqueous buffers and sterilization.
• Metal scavenger grades emphasize high ligand loading and robust binding in organic media, with validated capacity toward specific metals (e.g., Pd, Pt, Ru; literature expectations).

What to expect from this listing:

• This catalog entry does not specify exact grade, porosity, ligand identity, or capacity. For process selection, request the CoA/Spec Sheet, including particle size, functional loading (mmol/g), magnetic content, and recommended media/pH ranges.

Stabilizers or preservatives:

• Not specified for this item. If supplied as aqueous slurry, some products contain small amounts of biocide (e.g., sodium azide) or salts; verify on the CoA/SDS before use in bioassays or metal-sensitive steps.

Reaction and Applications

Applications below reflect general use cases for magnetic adsorbents and are not item-specific claims. Consult the CoA/Spec Sheet to confirm suitability for your target analyte and medium.

• Workup and purification
  • Catalyst scavenging: Removal of residual Pd/Pt/Ru/Ni after cross-couplings or hydrogenations using thiol-, amine-, or chelating-functional surfaces; magnetic capture replaces filtration.
  • Colorant/dye adsorption: Capture of aromatics/azo dyes from reaction mixtures or waste streams using π-rich or porous shells.
  • Acid/base neutral scavenging: Quench of acids/bases via basic/acidic functional groups without introducing aqueous washes.
• Biochemical workflows
  • Nucleic acid clean-up: Size-selective DNA/RNA binding in PEG/NaCl or chaotrope systems (SPRI-like workflows), followed by magnet-based wash and elution (literature).
  • Protein/peptide capture: Ion-exchange or affinity (e.g., IMAC via NTA/IDA-metal) separations for rapid enrichment.
• Heterogeneous catalysis and supports
  • Immobilization of catalysts/enzymes on magnetic matrices to enable facile recovery and reuse.
• Environmental and analytical sample prep
  • Solid-phase extraction (SPE) and dispersive SPE (dSPE) with magnetic retrieval for complex matrices.

Practical tips

• Pre-condition the adsorbent in the working solvent/buffer; remove fines if clarity is critical.
• Use excess adsorbent relative to expected capacity; confirm depletion by quick analytics (e.g., ICP for metals, UV–vis for dyes).
• For viscous or high-solid slurries, use strong neodymium magnets and allow sufficient settling time; gentle agitation improves kinetics.
• Regeneration protocols depend on surface chemistry (e.g., dilute acid/base, complexants, or solvent rinses); validate before reuse.

Reaction Conditions

Because this is a heterogeneous adsorbent, “reaction conditions” refer to adsorption parameters (general literature guidance; not item-specific):

• Medium and pH
  • Aqueous separations: choose buffer pH to optimize ionization state of both surface ligands and target analyte. Many iron-oxide/silica composites operate across mildly acidic to basic ranges; verify per CoA.
  • Organic separations: polar organics (MeOH, EtOH, IPA, MeCN, acetone, EtOAc) are common; adjust solvent strength to balance binding and elution.
• Temperature and time
  • Ambient temperature is typical; mild warming can accelerate kinetics for viscous systems. Avoid temperatures that degrade polymeric shells or ligands (upper limits are material-dependent; literature ranges often below 100–150 °C for polymer-coated materials).
  • Contact times from minutes to an hour often suffice; equilibrium may be faster with smaller particles and vigorous mixing.
• Dosage and capacity
  • Start with empirical screens (e.g., 0.5–10 wt% adsorbent relative to solute mass, literature) and back-calculate capacity from depletion curves.
• Mixing and separation
  • End-over-end or orbital mixing promotes uniform contact; magnetic capture with strong neodymium magnets expedites phase separation. Rinse beads with fresh solvent to recover entrained product.
• Regeneration
  • Use appropriate desorbents (e.g., dilute acid/base, complexants like EDTA for metal-laden scavengers, or strong organic eluents) followed by washing and re-equilibration. Validate performance over cycles.

All parameters above are general guidelines. For item-specific constraints (pH/solvent windows, maximum temperature), consult the CoA/Spec Sheet.

Safety and Handling

• Regulatory/GHS
  • Signal word: Not specified for this item; refer to SDS.
  • GHS hazard classes/pictograms/H-statements: Not specified for this item; refer to SDS.
• General hazards for magnetic adsorbents (class information; not item-specific)
  • Fine powders can create nuisance dust; avoid inhalation. Nanoparticulate materials may pose additional inhalation and environmental concerns; handle in a fume hood or enclosure.
  • Iron oxide–based cores are generally stable but can catalyze oxidative processes; avoid incompatible mixtures with strong oxidizers or reducers unless validated.
  • Polymer- or ligand-functionalized surfaces may introduce chemical hazards (amines, thiols, chelators, quaternary ammonium, etc.). Review SDS/CoA for specific functionality.
• PPE and engineering controls
  • Wear lab coat, safety glasses, and appropriate chemically resistant gloves. Use local exhaust ventilation during weighing, transferring, or sonication.
  • Prevent aerosolization; wet-handling or pre-wetting reduces dust.
• First-aid overview (general)
  • Inhalation: Move to fresh air; seek medical attention if symptoms persist.
  • Skin/eye contact: Rinse with water for several minutes. Remove contaminated clothing. Obtain medical advice if irritation occurs.
  • Ingestion: Rinse mouth; do not induce vomiting; seek medical attention.
• Handling tips
  • Keep containers tightly closed. Avoid strong magnetic fields near sensitive electronics and instruments.
  • For magnetic separations, use shielded magnets and keep fingers clear of pinch points.
• Disposal
  • Treat spent adsorbent as contaminated solid waste according to the adsorbed species and local regulations.

Always consult the product-specific SDS for authoritative safety, hazards, and first-aid information.

Solvent Selection

This product is a solid adsorbent; solvent selection relates to dispersing, conditioning, and elution rather than solubility.

• General compatibility (class information; not item-specific)
  • Aqueous systems: Silica- or hydrophilic polymer–coated magnetic adsorbents typically disperse in water and common biological buffers (PBS, Tris, HEPES) across a range of ionic strengths and pH, subject to surface chemistry.
  • Organic systems: Metal-scavenging or hydrophobic surfaces often operate in alcohols, esters, ethers, chlorinated solvents, toluene, or hydrocarbons. Swelling of polymeric shells depends on solvent polarity and crosslinking density.
  • Mixed media: Water-miscible organics (MeOH, EtOH, IPA, acetonitrile, acetone) are widely used for conditioning, washing, and regenerating.
• Practical solvent choice
  • Match solvent to target interaction: ionic exchangers prefer buffered aqueous media; thiol/amine/chelating ligands function well in polar organics for metal scavenging; hydrophobic interactions benefit from high-organic content.
  • Viscosity and density influence magnetic capture; lower viscosity and reduced solids loading speed separation.
  • Avoid strong oxidizers or complexants that deactivate surface ligands unless used for regeneration.
• Small comparison (general; not item-specific)
  • Water/buffers: biocompatible, safe; may require salt or pH control to suppress nonspecific binding.
  • Alcohols/MeCN: good for small-molecule workups; fast drying; can dehydrate or shrink polymer matrices.
  • Chlorinated solvents: strong elution for hydrophobic species; ensure shell compatibility and dispose properly.

Always pre-equilibrate the adsorbent in the working medium to ensure consistent performance.

Storage and Reconstitution

• Storage conditions (item-specific)
  • Storage: Room temperature (per Product Data).
  • Shipping: Shipped under normal conditions (per Product Data).
• General storage guidance (not item-specific; depends on supplied form)
  • If supplied as a dry solid: Store tightly closed in a cool, dry place. Protect from moisture to avoid agglomeration and performance drift. For nanoparticulate powders, minimize repeated opening to reduce humidity cycling.
  • If supplied as an aqueous slurry: Store at room temperature only if specified on the CoA/SDS; some slurries include preservatives. Gently resuspend before use by inversion or brief vortexing; avoid strong sonication unless recommended.
  • Keep away from strong acids/bases/oxidants unless the material is rated compatible. Avoid prolonged exposure to strong magnetic fields near sensitive equipment.
• Reconstitution/conditioning (general)
  • Pre-wet or equilibrate the adsorbent in the intended working solvent or buffer. For dried materials, disperse with gentle stirring; brief bath sonication can help deagglomerate if compatible with the coating.
  • Remove storage preservatives by washing if they interfere with downstream applications.

For any additional item-specific instructions (e.g., maximum shelf life, preservative content, pH/solvent compatibility), consult the CoA/Spec Sheet. For research use only (as stated).

Structure and Identity

This product is a generic magnetic adsorbent intended for laboratory separations and scavenging workflows. Item-specific structural identifiers are not provided for this catalog entry.

• Item-specific identifiers
  • Molecular formula: Not specified for this item; refer to CoA/Spec Sheet.
  • Molecular weight: Not specified for this item; refer to CoA/Spec Sheet.
  • SMILES: Not specified for this item; refer to CoA/Spec Sheet.
  • InChIKey: Not specified for this item; refer to CoA/Spec Sheet.
  • CAS No.: Not specified for this item; refer to CoA/Spec Sheet.
• Likely structural features (general class information; not item-specific)
  • Many magnetic adsorbents are composite materials comprising a magnetic core (commonly magnetite Fe3O4 or maghemite γ-Fe2O3) embedded in or coated with silica, carbon, polymer, or inorganic shells.
  • Surface chemistries vary widely (e.g., hydroxyl, carboxyl, amino, thiol, imidazole, chelating ligands, ion-exchange groups) chosen to target metals, dyes, proteins, nucleic acids, or small-molecule impurities.
  • Morphology typically spans nanoparticles to mesoporous microbeads; supports may be monolithic or particulate and may be spherical or irregular.
• 2D/functional description (general)
  • A magnetic core enables rapid magnetic capture. A functionalized surface layer presents binding motifs for target analytes. Optional spacer layers (e.g., silica or crosslinked polymers) control porosity, prevent core oxidation, and tune hydrophilicity.

Note: Because this is a broad “Magnetic adsorbent” listing, consult the lot-specific CoA/Spec Sheet for exact composition, functional group identity, and particle size distribution.

Synthetic Utility

Magnetic adsorbents provide practical advantages in synthetic chemistry by coupling selective adsorption with rapid, equipment-light separations. The following are general utilities (not item-specific):

• Metal scavenging
  • Post-coupling cleanup to remove Pd/Pt/Ru/Ni/Fe using thiol, amine, or chelating ligands; magnetic retrieval avoids filtration through Celite or cartridges.
• Quench/neutralization
  • Acidic or basic functionalized surfaces quench residual reagents (e.g., sulfonyl chlorides, isocyanates) or neutralize acids/bases while maintaining anhydrous conditions.
• Byproduct removal
  • Capture of phosphine oxides, over-alkylated byproducts, or colored impurities via tuned polarity and π–π interactions.
• Catalyst/support platform
  • Immobilization of organocatalysts, metal complexes, or enzymes on magnetic carriers for easy recycle and reduced metal contamination risk.
• Retrosynthetic planning advantage
  • Enables more aggressive coupling or reagent choices when reliable post-reaction scavenging is available; can simplify downstream chromatography.

Implementation tips

• Screen adsorbent loadings (e.g., 0.5–5 wt% relative to crude, literature) and contact times under agitation; monitor depletion analytically (ICP, GC/LC).
• Sequence operations to maximize efficiency: dilute viscous crudes, add adsorbent, mix, magnetically separate, then polish with a secondary adsorbent if needed.
• Validate compatibility with target functional groups to avoid product loss via nonspecific binding.

Target Specificity

Not applicable. This product is a magnetic adsorbent, not an antibody or affinity reagent with a defined biological epitope or clone. Any selectivity arises from its surface chemistry (e.g., ion-exchange, hydrophobic, chelating groups) rather than a biomolecular target. Refer to the CoA/Spec Sheet for the specific functional group(s) and intended analyte class, if provided.