Magnetic adsorbent - Matrix:SiO2,Surface group:-SO3H,Size:2-3um,unit:10mg/ml

Cat. No.: M121922

GRADE & PURITY Matrix:SiO2,Surface group:-SO3H,Size:2-3um,unit:10mg/ml

Storage

Room temperature

Shipped In

Normal

Specifications

Spécifications et pureté

Matrix:SiO2,Surface group:-SO3H,Size:2-3um,unit:10mg/ml

Conditions de stockage de stockage

Room temperature

Expédié en

Normal

Application Protocols

Validated, item-specific protocols are not provided for this SKU. The following is a general magnetic adsorption workflow you can adapt and optimize. Always consult the CoA/Spec Sheet and perform pilot tests.

• General magnetic scavenging/cleanup (batch)

  1. Pre-condition: Rinse the adsorbent with 3–5 volumes of the working solvent/buffer to remove fines and equilibrate the surface.
  2. Dose: Add 1–10 wt% adsorbent relative to solution mass (or an initial screen of 10–50 mg/mL for metal scavenging). Agitate vigorously.
  3. Contact: Mix 5–30 minutes at room temperature; sample periodically and assay (e.g., TLC/UPLC/ICP) until target reduction plateaus.
  4. Capture: Apply a neodymium magnet; allow complete separation (seconds–minutes). Decant supernatant carefully.
  5. Wash: Rinse the retained solids with 1–3 volumes of fresh solvent; recombine washes as needed.
  6. Regenerate/dispose: If reusable, elute bound species via pH/ligand/solvent change; otherwise, collect for disposal per regulations.

• Notes for aqueous bio-related use (if applicable; not specified for this item)

  • Use filtered buffers; minimize foaming. If nonspecific binding is problematic, include blockers/surfactants compatible with your assay.
  • For nucleic acid capture with silica-like surfaces, chaotropic salts and alcohol are often employed (general literature); this product’s compatibility is not specified.

Document adsorption capacity and recovery across cycles to establish reproducible performance.

Biological Roles

This product is a laboratory magnetic adsorbent intended for research use only. No biological role, composition, or biocompatibility is specified for this SKU.

• Item-specific biological information

  • Biocompatibility, endotoxin levels, and suitability for cell or protein work: Not specified for this item; refer to CoA/Spec Sheet.

• General context (literature) for magnetic adsorbents in biosciences

  • Magnetic particles are widely used as solid supports for affinity capture (e.g., nucleic acids with silica-like surfaces; proteins via ion exchange or affinity ligands). The biological “role” is purely functional as a separation aid rather than a metabolite or signaling molecule.
  • Surface chemistry dictates non-specific binding and compatibility with common biological buffers (PBS, Tris, MES). Oxide/silica surfaces exhibit pH-dependent charge, impacting protein adsorption and elution profiles.
  • For live-cell handling, coatings such as dextran, PEG, or specific antibodies can reduce cytotoxicity and enable targeted capture; none of these features are claimed for this specific item.

• Cautionary notes

  • Do not assume sterility or endotoxin control unless stated. Magnetic particulates can interfere with optical measurements; remove fully before absorbance/fluorescence reads.
  • Avoid strong magnetic fields near sensitive biological instruments (e.g., flow cytometers) during handling.

For any biological application, confirm suitability with the item’s CoA/Spec Sheet and perform small-scale compatibility checks.

Buffer Applications

No item-specific buffer recommendations or pH stability ranges are provided for this SKU.

• General guidance (if using in buffered aqueous systems)

  • Equilibration: Pre-wash and equilibrate the adsorbent with 5–10 bed volumes (or equivalent mass/volume for slurries) of the working buffer to establish consistent surface conditions.
  • pH and ionic strength: Adsorption selectivity often depends on electrostatics; screen pH (e.g., 4–9) and salt (0–500 mM NaCl) to map capacity and desorption conditions. The safe operating window for this product is Not specified; confirm experimentally.
  • Common buffers: Phosphate (pH 6–8), Tris (pH 7–9), acetate (pH 4–5.5), and MES (pH 5.5–6.7) are frequently used. Avoid buffers that strongly complex with the surface (e.g., high citrate with iron oxides) unless intended for elution.

• Practical points

  • Filtration of buffers (0.22–0.45 μm) reduces particulate contamination that can compete for binding sites.
  • Include low amounts of nonionic surfactant or protein blockers to mitigate nonspecific binding in proteomic workflows, if compatible.
  • For regeneration, step changes in pH/salt or chelating agents are typical; ensure the chosen regimen does not degrade the coating (Not specified for this item).

Always consult the CoA/Spec Sheet for any buffer incompatibilities, storage media, and stability data specific to this product.

Green Alternatives

Magnetic adsorbents often enable greener unit operations by simplifying phase separation and reducing consumables. Below are general sustainability considerations compared with conventional adsorbents; item-specific features are not specified for this SKU.

• Potential green advantages (general)

  • Eliminate filtration/centrifugation: magnetic capture reduces filter media waste, energy use, and time.
  • Lower solvent volumes: faster phase disengagement and shorter wash cycles can reduce rinse solvent consumption.
  • Reusability: magnetically recoverable adsorbents/catalysts may be regenerated and cycled, decreasing solid waste.

• Trade-offs

  • Upstream footprint: synthesis of magnetic cores/coatings may involve energy-intensive steps and surfactants.
  • Leaching risk: poorly anchored ligands or metal impurities could introduce contaminants if not well controlled.
  • Regeneration media: acid/base or chelating regenerants have their own EHS impacts.

• Comparison snapshot (general literature)

  • Magnetic adsorbent vs. conventional powder adsorbent (e.g., activated carbon or silica):
    • Separation: magnet vs. filtration/centrifugation.
    • Solid loss: typically lower with magnet capture; fines losses lower if aggregation is controlled.
    • Throughput: higher for magnet-enabled batch systems; continuous magnet-assisted designs possible.

• Practical “green by design” tips

  • Select operating pH/ionic strength to maximize capacity and minimize regenerant strength.
  • Use closed-loop regeneration to recycle eluents.
  • Validate multi-cycle performance to quantify true waste reduction.

Consult the CoA/Spec Sheet for regeneration limits and compatibility to plan sustainable use.

Pharmaceutical Uses

This product is designated for research use only. No pharmacopeial status, GMP suitability, or excipient role is specified for this SKU.

• Item-specific regulatory/grade information

  • Grade/purity and compliance status (e.g., USP/NF, EP, GMP): Not specified for this item; refer to CoA/Spec Sheet.

• General context for magnetic adsorbents in pharmaceutical R&D/manufacturing (non-clinical discussion)

  • Process aids: magnetic scavengers can remove residual catalysts, colored impurities, or reactive reagents from API intermediates, potentially simplifying workups and reducing filtration burdens.
  • Analytical/sample prep: magnetic SPE can streamline cleanup prior to LC/GC analysis, improving throughput.
  • Bioprocessing research: functionalized magnetic beads are used for investigational capture/purification steps (e.g., His-tag proteins via IMAC), though scale and regulatory acceptance vary; none of these uses are claimed for this specific product.

• Considerations

  • Extractables/leachables, particulate burden, and metal content must be controlled and qualified before use in regulated environments.
  • Demonstrate adsorbent capacity, selectivity, and regeneration across realistic process ranges; document carryover and potential product loss.

For any application in GMP or clinical manufacturing, select qualified materials and obtain full documentation. This listing provides no such claims; consult the CoA/Spec Sheet for available quality information.

Physical Properties

Item-specific physico-chemical data are not provided for this SKU.

• Item-specific values

  • Appearance: Not specified for this item; refer to CoA/Spec Sheet.
  • Particle size distribution, BET surface area, pore size, saturation magnetization (Ms), coercivity (Hc), density, and moisture content: Not specified for this item; refer to CoA/Spec Sheet.
  • Solubility: Insoluble solid typically; exact dispersibility/settling behavior and recommended dispersion media are Not specified for this item; refer to CoA/Spec Sheet.

• Typical properties of magnetic iron-oxide-based adsorbents (literature, for general context only)

  • Physical state: solid powder or aqueous/solvent slurry; black to brown (magnetite/maghemite) when uncoated.
  • Magnetic behavior: often superparamagnetic at room temperature for nanoparticles (<~20 nm domains), enabling rapid magnetic capture without remanent aggregation; micro-scale materials may be ferrimagnetic.
  • Surface characteristics: hydroxylated oxide or silica surfaces exhibit pH-dependent charge (point of zero charge often in the pH 6–8 range for many oxides/silicas; literature, varies with composition/functionalization).
  • Thermal stability: cores are thermally robust; polymer/organic ligands determine practical upper temperature limits (commonly <150–200 °C, literature-dependent).
  • Dispersibility: improved by appropriate ionic strength/pH and surfactants or by surface functionalization; aggregation kinetics vary widely by shell chemistry.

For experimental planning (e.g., loading capacity, kinetics), consult the item’s CoA/Spec Sheet; do not assume the above literature ranges apply to this product.

Quality and Grades

• Item-specific grade/purity: Not specified for this item; refer to CoA/Spec Sheet.

• What “grade” means for magnetic adsorbents (general guidance)

  • Adsorbent performance is governed less by chemical assay purity and more by functional metrics: particle size distribution, magnetic responsiveness, specific surface area, ligand density, metal impurity profile (for catalytic or biological applications), and residual solvent/additive contents.
  • For chromatography/bioseparations, low extractables/leachables and endotoxin/bioburden control may be part of quality definitions; for synthetic scavengers, loading capacity (mmol/g) and batch-to-batch reproducibility are key.

• Stabilizers and additives

  • Some formulations include dispersants, salts, or polymeric stabilizers to prevent aggregation. Presence/identity of any stabilizer is Not specified for this item; refer to CoA/Spec Sheet.

• Verification & QC recommendations (practical tips)

  • Measure adsorption capacity on a relevant probe solute/ion under your process conditions to benchmark lot fitness.
  • Check magnetic separation time and residual turbidity versus a standard magnet setup.
  • Verify pH stability window by cycling in your intended buffers/solvents.
  • For spectroscopic work, screen for background contamination (trace metals/ligands) that might interfere with catalysts or assays.

Always rely on the lot-specific CoA/Spec Sheet for definitive grade, acceptance criteria, and recommended tests.

Reaction and Applications

Without item-specific functionalization details, applications below are described in general terms for magnetic adsorbents. Consult the CoA/Spec Sheet to confirm suitability for your use case.

• Sample preparation and cleanup

  • Rapid solid-phase extraction (magnetic SPE) for contaminants, dyes, pesticides, or small molecules from complex matrices. Magnetic capture obviates filtration/centrifugation, accelerating workflows.

• Synthetic chemistry and process

  • Scavenging residual reagents, catalysts (e.g., Pd, Cu), and byproducts from reaction mixtures using ligand-grafted magnetic adsorbents; easy separation simplifies workup and enables continuous processing.
  • Immobilized catalysts on magnetic supports enable magnet-assisted recovery and re-use, improving throughput and reducing metal leaching.

• Environmental/water treatment

  • Removal of heavy metals (e.g., As, Cr, Pb), phosphate, nitrate, and organics via ion exchange, chelation, or hydrophobic/π–π interactions depending on surface groups (general literature—specific capabilities for this item are not specified).

• Bioseparations (if biocompatible)

  • Capture of proteins, nucleic acids, or cells using functional ligands (e.g., IMAC, streptavidin-biotin, ion exchange). Applicability to biomolecules for this item is Not specified.

• Practical guidance

  • Optimize contact time, mixing rate, and adsorbent dosage to approach equilibrium; monitor breakthrough/loading where applicable.
  • Use an external magnet sized to vessel geometry for complete capture; verify residual solids by turbidity/optical check.

All suggested applications are general to the class of materials and are not guaranteed for this SKU without consulting its CoA/Spec Sheet.

Reaction Conditions

No item-specific operating envelopes are provided. The guidance below reflects general practices for using magnetic adsorbents in batch processes and sample cleanup; adjust to your chemistry and validate.

• Dosage and contact time (general)

  • Typical starting screen: 1–10 wt% adsorbent relative to solution mass for scavenging; for trace metals, begin at 10–50 mg sorbent per mL of solution and titrate based on ICP results.
  • Contact time ranges from 5–60 minutes under vigorous stirring or vortexing; adsorption kinetics depend on diffusion and surface chemistry.

• Temperature and solvents

  • Ambient temperature is commonly sufficient; mild heating (25–60 °C) can accelerate kinetics if the coating is stable. Solvent compatibility and thermal limits are Not specified for this item; verify before heating.

• pH and ionic strength

  • For ionic adsorption, tune pH to favor binding (e.g., deprotonate acids for anion exchangers; protonate bases for cation exchangers). High salt may suppress electrostatic binding but aid desorption.

• Separation and washing

  • Use a strong neodymium magnet matched to vessel geometry for complete capture (typically within seconds to a few minutes). Decant supernatant carefully; repeat wash cycles until analytics confirm cleanliness.

• Regeneration (general)

  • Elute with pH shifts, competitive ligands, or solvent polarity changes. Avoid conditions that strip or dissolve the coating/core. Specific regeneration protocols for this SKU are Not specified; consult CoA/Spec Sheet.

Record mass balance and perform control blanks to quantify any leaching or background contribution from the adsorbent.

Safety and Handling

GHS hazard information for this specific SKU is not provided here. Always consult the product SDS for authoritative safety, hazard classification, and emergency procedures.

• Item-specific hazard details

  • Signal word / H-statements / Pictograms / GHS classification: Not specified for this item; refer to SDS.

• General laboratory precautions for magnetic particulate adsorbents (general guidance)

  • PPE: wear safety glasses, lab coat, and appropriate gloves. Use a dust mask/respirator if dust generation is possible. Handle powders in a fume hood or ventilated enclosure to minimize inhalation exposure.
  • Avoid inhalation/ingestion; prevent contact with eyes/skin. Wash thoroughly after handling.
  • Magnet-related precautions: keep material away from sensitive instruments (e.g., magnetic field–sensitive sensors, magnetic storage). Use guarded magnets to avoid pinch hazards when collecting particles.
  • Incompatibilities: strong acids/bases or chelators may dissolve or strip coatings from iron oxides; oxidants/reductants may alter surface states. Verify compatibility with the specific surface chemistry (not specified for this item; refer to CoA/SDS).
  • Spill response: avoid dust formation; gently dampen and collect with a magnet and inert absorbent. Dispose according to institutional and local regulations.

• First aid (general)

  • Eye/skin contact: rinse with water for at least 15 minutes; remove contaminated clothing. Seek medical advice if irritation persists.
  • Inhalation: move to fresh air; seek medical attention if symptoms develop.
  • Ingestion: rinse mouth; do not induce vomiting unless directed by medical personnel.

Defer to the SDS for all binding safety information.

Solvent Selection

This product is a solid magnetic adsorbent rather than a solvent; classic “solvent selection” does not directly apply. However, dispersion media and process fluids are critical to performance and handling.

• Dispersion/media considerations (general guidance)

  • Aqueous systems: choose buffer strength and pH to promote desired surface charge and minimize aggregation. For oxide/silica-like surfaces, ionic strength can screen electrostatics; small amounts of surfactant or protein blockers (e.g., BSA) may reduce nonspecific binding in bioseparations. Item-specific compatibility is Not specified; validate experimentally.
  • Organic systems: many polymer-coated or silica-coated magnetic adsorbents can be dispersed in alcohols, acetonitrile, or hydrocarbons; swelling/solvation depends on the coating polymer and is Not specified for this item.
  • Mixed solvent systems can tune solubility parameters and adsorption selectivity (e.g., water–acetonitrile for scavenging polar organics; water–ethanol for pigment removal).

• Practical tips

  • Pre-equilibrate the adsorbent in your working medium to stabilize the surface before use.
  • Degas buffers when air entrapment affects magnetic collection; avoid foaming additives if rapid settling is needed.
  • If fines cause turbidity, consider mild flocculants compatible with your matrix or adjust ionic strength/pH.

Consult the CoA/Spec Sheet for any media restrictions and recommended washing/conditioning solvents specific to this SKU.

Storage and Reconstitution

• Storage conditions (item-specific from Product Data)

  • Store at room temperature.
  • Shipped at ambient temperature (Normal). Avoid temperature extremes and moisture ingress during storage.

• Container and handling

  • Keep tightly closed in a dry, well-ventilated place. Prevent electrostatic charging and dust generation. For slurries, keep the container upright and prevent evaporation or phase separation.

• Stability and shelf life

  • Shelf life, stabilizers, and preservative content: Not specified for this item; refer to CoA/Spec Sheet.

• Reconstitution/dispersion (general guidance)

  • If supplied as a dry powder: Disperse the required mass into the working solvent/buffer under stirring or brief sonication. Pre-wet with a miscible solvent if needed to avoid clumping. Degas if bubbles hinder magnetic capture.
  • If supplied as a slurry: Gently homogenize by inversion or rolling prior to aliquoting. Adjust solids content by sedimentation/decanting or by adding compatible medium.
  • Pre-equilibrate with 3–5 volumes of the intended medium before first use to stabilize surface chemistry.

• Freeze–thaw and light

  • Unless specified otherwise, avoid freezing aqueous slurries (can cause aggregation) and prolonged UV exposure that may degrade organic coatings. Item-specific guidance is Not specified for this item; refer to CoA/Spec Sheet.

Always consult the lot-specific CoA/Spec Sheet for detailed storage instructions and any restrictions on solvents, pH, or temperature.

Structure and Identity

This product is described generically as a “Magnetic adsorbent.” No item-specific structural identifiers are provided.

• 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 / CAS / CID: Not specified for this item; refer to CoA/Spec Sheet.

• What “magnetic adsorbent” typically means (general literature context)

  • Many magnetic adsorbents comprise an iron oxide magnetic core (often magnetite Fe3O4 or maghemite γ-Fe2O3) encapsulated or coated with an inorganic (e.g., SiO2) or organic/polymeric shell bearing surface functional groups for adsorption or scavenging.
  • Common surface chemistries include bare oxide hydroxyls, silica silanols, or grafted ligands (amines, carboxylates, thiols, quaternary ammonium, sulfonic acids, imidazolium ionic liquids, or chelators).
  • Morphology is frequently spherical, nano- to micro-scale, aggregated into separable clusters; magnetic domains enable collection with an external magnet without filtration.

• 2D/functional description in words (general)

  • A magnetic core confers superparamagnetism or ferrimagnetism; a shell provides colloidal stability and anchors adsorptive moieties. Functional groups determine affinity via ion exchange, chelation, hydrophobic or π–π interactions, or hydrogen bonding.

Important note: The above describes common architectures of magnetic adsorbents in the literature and does not imply composition or surface chemistry for this specific SKU. Consult the CoA/Spec Sheet for definitive identity and specifications.

Synthetic Utility

Magnetic adsorbents offer versatile tools in synthetic chemistry by combining tailored surface reactivity with facile magnetic recovery. Item-specific functionality/loading for this SKU is not provided; the following outlines general utility.

• Workup simplification

  • Post-reaction scavenging of acids/bases, metals (e.g., Pd, Cu, Ru), and electrophiles/nucleophiles using complementary surface ligands (amine, thiol, phosphine, sulfonic acid, quaternary ammonium). Rapid magnetic pull-down reduces emulsion formation and filtration time.

• Heterogeneous catalysis

  • Immobilization of catalysts (organocatalysts, metal complexes, nanoparticles) on magnetic supports enables easy recycle; supports can be oxide, silica, or polymer shells. Magnet-assisted separation minimizes catalyst leaching into product streams.

• Flow and parallel synthesis

  • Packed or slurry reactors with in-line magnets can retain catalyst/adsorbent while allowing continuous flow of reagents, supporting intensified processing.

• Selective adsorption/enrichment

  • Capture of target solutes via ion exchange, hydrophobic interactions, π–π stacking, or specific chelation. Useful for color removal, byproduct suppression, or protecting groups scavenging.

• Practical notes

  • Optimize sorbent dose (e.g., 1–10 wt% relative to crude) and contact time; monitor by TLC/UPLC or ICP for metals.
  • Pre-condition in reaction solvent to stabilize swelling/dispersion; confirm compatibility with strong bases/nucleophiles/oxidants depending on coating chemistry (not specified for this item).

Consult the CoA/Spec Sheet for the exact surface chemistry and loading to plan precise stoichiometry and compatibility.

Target Specificity

Target specificity (e.g., affinity ligand, ion-exchange functionality, or selective chelator identity) is not provided for this SKU.

• Item-specific details

  • Surface functional groups, ligand density (mmol/g), and selectivity profile: Not specified for this item; refer to CoA/Spec Sheet.

• General notes (literature context)

  • Magnetic adsorbent specificity arises from the chemistry grafted to the surface: ion-exchange resins target oppositely charged species; chelating ligands (e.g., IDA/NTA) target metal ions; hydrophobic/π–π ligands enrich aromatic organics; bioaffinity ligands target tagged biomolecules.
  • Matrix effects (pH, ionic strength, organic co-solvents) strongly modulate apparent specificity; screening conditions is essential.

To determine the selectivity of this product for your analyte, consult the CoA/Spec Sheet and perform a small-scale adsorption isotherm or breakthrough experiment under your intended conditions.