Manganese boride (MnB) - ≥95% , CAS No.12045-15-7

CAS: 12045-15-7 Cat. No.: M949688 Formula: BMn Peso molecolare: 65.750 Numero EC: EINECS234-957-2

GRADE & PURITY ≥95%

Storage

Room temperature

Specifications

Specifiche e purezza

≥95%

Condizioni di conservazione di stoccaggio

Room temperature

Purezza

≥95%

Nomi e identificatori

Sorrisi canonici

B#[Mn]

IUPAC Name

boranylidynemanganese

InChIKey

PALQHNLJJQMCIQ-UHFFFAOYSA-N

INCHI

1S/B.Mn

Peso molecolare

65.750

Taxonomic Classification

Taxonomy Tree

• Kingdom Inorganic compounds
  • Superclass Mixed metal/non-metal compounds
    • Classe Metalloid salts

• Kingdom: Inorganic compounds
• Superclass: Mixed metal/non-metal compounds
• Classe: Metalloid salts
• Subclass: Not available
• Intermediate Tree Nodes: Not available
• Direct Parent: Metalloid salts
• Alternative Parents: Intermetallic metalloid compounds Inorganic salts
• Molecular Framework: Not available
• Substituents: Intermetallic metalloid - Inorganic salt - Inorganic metalloid salt
• Descrizione: This compound belongs to the class of inorganic compounds known as metalloid salts. These are inorganic halogenic compounds in which the heaviest metal atom is a metalloid.
• External Descriptors: Not available

Data sources

1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61.

DOI: 10.1186/s13321-016-0174-y

Proprietà chimiche e fisiche

• Peso molecolare: 65.750 g/mol
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 0
• Rotatable Bond Count: 0
• Exact Mass: 65.9473 Da
• Monoisotopic Mass: 65.9473 Da
• Topological Polar Surface Area: 0.000 Ų
• Heavy Atom Count: 2
• Formal Charge: 0
• Complexity: 10.000
• Isotope Atom Count: 0
• Defined Atom Stereocenter Count: 0
• Undefined Atom Stereocenter Count: 0
• Defined Bond Stereocenter Count: 0
• Undefined Bond Stereocenter Count: 0
• The total count of all stereochemical bonds: 0
• Covalently-Bonded Unit Count: 1

XLogP3

Application Protocols

No manufacturer‑validated protocols are provided for this item.

General starting points (literature/general):

• Electrode ink preparation:
  1. Disperse MnB powder (e.g., 2–5 mg·mL⁻¹) in a mixture of isopropanol/water with 0.05–0.1 wt% Nafion.
  2. Sonicate 30–60 min to homogenize.
  3. Drop‑cast onto a pre‑cleaned carbon paper or glassy carbon; dry at ambient temperature.
  4. Rinse lightly to remove loosely bound particulates before electrochemical testing.
• Catalyst bed packing:
  1. Sieve powder to desired fraction; mix with inert diluent (e.g., SiC) if needed for thermal management.
  2. Load into a fixed‑bed reactor under inert; pre‑treat under flowing H₂ or N₂ at 150–400 °C depending on setup.
  3. Introduce feed at controlled space velocity; monitor conversion/selectivity.

Adjust loads, temperatures, and times to your specific system. For analytical or device fabrication protocols tailored to a particular lot’s particle size or surface area, consult the CoA/Spec Sheet.

Biological Roles

Not a biological reagent per se. Manganese boride is an inorganic solid used in materials and catalysis research, with no direct biological role.

Literature/general context:

• Elemental relevance: Manganese is an essential trace element in biology (as Mn cofactors in enzymes), and boron can influence plant physiology; however, the solid intermetallic MnB has no physiological function and is not used in biochemical pathways.
• Biocompatibility considerations: Any use in bio‑interfaces would require independent assessment of particle size, leachables (Mn ions), and surface chemistry. Such evaluations are application‑specific and outside the scope of this catalog listing.

For life‑science workflows seeking metals or boron compounds with defined biochemical activity, select dedicated biochemical‑grade salts, buffers, or probes instead.

Buffer Applications

Not applicable. Manganese boride is an insoluble inorganic solid and is not used to prepare buffering solutions or to control pH.

Recommendation: For buffering needs, select appropriate biological buffers (e.g., phosphate, Tris, HEPES) matched to your pH range and ionic strength; see dedicated buffer products.

Green Alternatives

Context: In catalysis and electrochemistry, manganese boride represents a more earth‑abundant alternative to precious metals.

Comparison (literature/general):

| Option | Resource base | Typical use | Pros | Cons | |---|---|---|---|---| | MnB (this product) | Earth‑abundant Mn, B | Heterogeneous catalysis, HER | No noble metals; robust; conductive | Activity/selectivity can be phase/defect dependent; sensitive to surface oxidation | | Pt/C, RuO₂ | Precious/critical | Benchmark HER/OER | Highest activities | High cost; scarcity; susceptibility to poisoning | | Transition‑metal carbides/nitrides (e.g., Mo₂C, VN) | Abundant | HER/HOR, HDO | Good conductivity; tunable | Synthesis complexity; oxidation sensitivity | | Metal phosphides (e.g., Ni₂P) | Abundant | HER/OER | High activity; established methods | P handling, potential oxidation to phosphates |

Greener practice tips:

• Synthesis choice: If preparing composites, prefer aqueous or low‑VOC dispersions; avoid fluorinated solvents where possible.
• Electrode fabrication: Use water/IPA binders (e.g., CMC/SBR) instead of NMP/PVDF when compatible.
• Lifecycle: Mn‑based materials ease critical‑metal dependency; plan for reclamation or reuse of substrates and supports.

Pharmaceutical Uses

No pharmacopeial or excipient role is indicated for manganese boride. It is a research material for materials science and catalysis, not a pharmaceutical ingredient.

If your project involves device coatings or composite materials in regulated contexts, perform independent qualification for:

• Trace metal/impurity profiles (ICH Q3D),
• Particle size and morphology,
• Extractables/leachables under intended conditions,
• Biocompatibility (ISO 10993) where relevant.

Item‑specific pharmacopeial status, residual solvents, or excipient functionality: Not specified for this item; refer to CoA/Spec Sheet.

Physical Properties

Item-specific specifications (bp/mp/density/particle size/solubility/UV cutoff): Not specified for this item; refer to CoA/Spec Sheet.

Literature/general characteristics for MnB and related transition‑metal borides:

• State/appearance (literature): Refractory, microcrystalline or powdery solid; dark gray to black.
• Melting behavior (literature): High‑melting refractory; reported Mn–B binaries exhibit melting or decomposition typically >1500 °C depending on exact phase and stoichiometry.
• Density (literature): High relative to organic solids; typical metal borides range roughly 4–8 g·cm⁻³ (exact value phase/porosity dependent).
• Electrical/thermal (literature): Metallic or semimetallic conductivity; good thermal stability.
• Magnetism (literature): Manganese borides can exhibit complex magnetic behavior (paramagnetic/antiferromagnetic) varying with composition and temperature.
• Solubility (literature): Insoluble in water and common organic solvents; generally resistant to non‑oxidizing acids at ambient conditions but may react under aggressive conditions (hot concentrated acids/oxidizers).
• Particle-size dependent properties: Surface area, reactivity, and catalytic performance can vary strongly with crystallite size and morphology.

Measurement guidance:

• Determine true density by helium pycnometry; assess purity and phase by PXRD; evaluate surface area by BET. When exact values are critical, consult the CoA/Spec Sheet for this lot.

Quality and Grades

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

How to interpret quality for inorganic boride powders (general guidance):

• Phase purity: Verify by powder X‑ray diffraction (PXRD) vs. reference patterns for MnB; secondary phases (e.g., Mn₂B, MnB₂, Mn, B) can affect properties.
• Chemical purity: ICP‑OES/ICP‑MS for metallic impurities; combustion/LECO for B and O content.
• Surface chemistry: XPS to assess oxidation (Mn–O, B–O) that may form on storage, impacting catalytic or electrical performance.
• Particle metrics: BET surface area, particle size distribution, and morphology (SEM/TEM) strongly influence application outcomes.

Stabilizers/additives:

• None are indicated in the Product Data. If passivated or dispersed forms are required, consult the CoA/Spec Sheet or contact Technical Support for tailored options.

Selecting the right grade:

• Catalysis/electrocatalysis: Prioritize phase purity, low oxide content, and controlled nanoscale morphology.
• Hard materials/coatings/R&D: Bulk phase purity and particle size uniformity may suffice; specify sieve cuts if needed.

Reaction and Applications

Manufacturer Applications: Not specified in the Product Data.

Literature/general applications of manganese boride and related transition‑metal borides:

• Heterogeneous catalysis: Explored as earth‑abundant catalysts for hydrogen evolution (HER), hydrodeoxygenation, hydrogenation/dehydrogenation, and hydroboration reactions. Mn–B surfaces can provide synergistic metal/boron sites that facilitate H‑adsorption and bond activation.
• Electrocatalysis: Investigated for HER/OER in alkaline/neutral electrolytes due to conductivity and corrosion resistance.
• Hard materials and coatings: High hardness and thermal stability suit wear‑resistant coatings, composites, and diffusion boriding reference standards.
• Magnetic/electronic materials research: Mn borides exhibit composition‑dependent magnetic behaviors of interest in fundamental studies.

Practical tips (general):

• Activation: Gentle thermal treatment in inert gas or vacuum can remove physisorbed species; avoid oxidizing ramps.
• Shaping: Use binders (e.g., PVA, PEG) or polymer matrices to form pellets, films, or electrodes.
• Characterization: Correlate catalytic outcomes with PXRD phase analysis and XPS surface states; activity often tracks with surface boron deficiency/oxidation.
• Regeneration: For spent catalysts, mild reductive treatments (H₂ or forming gas) may restore activity; verify safety before H₂ treatments.

Reaction Conditions

Item‑specific tested conditions are not provided; refer to the literature for system‑specific optimization.

General literature guidance for uses of MnB:

• Heterogeneous hydrogenation/deoxygenation:
  • Solvent: alcohols (EtOH, iPrOH), water, or hydrocarbons depending on substrate.
  • Atmosphere: H₂ (1–50 bar) or transfer‑hydrogenation donors.
  • Temperature: ambient to 250 °C; adjust to substrate stability.
  • Notes: Pre‑treat catalyst under H₂ or inert to clean surfaces; monitor for induction periods.
• Hydrogen evolution electrocatalysis (HER):
  • Electrolyte: typically 0.5–1.0 M KOH (alkaline) or neutral buffers.
  • Substrate: MnB deposited on carbon paper/Ni foam with Nafion/PVDF binders.
  • Operating: Room temperature; potentials near 0 V vs RHE for HER scans; iR compensation as appropriate.
  • Notes: Surface oxidation/passivation markedly influences overpotential; gentle activation may improve performance.
• Coating/composite processing:
  • Vehicle: polymer binders (PVA, PVDF), slurries in water/IPA or NMP as compatible.
  • Drying/curing: per binder system; avoid oxidative over‑temperatures that could form Mn oxides.

Always verify with small‑scale trials; characterize pre‑/post‑use by PXRD/XPS to correlate activity with phase/surface state.

Safety and Handling

• GHS classification, signal word, pictograms, H‑statements: Not specified for this item; refer to SDS.
• Research use: For research use only.

General safety considerations for manganese boride powders (literature/general):

• Dust hazard: Fine powders may create a nuisance dust and can pose a combustible dust hazard; avoid dust generation and ignition sources. Use local exhaust ventilation.
• Inhalation/skin/eye: Treat as an irritant particulate. Wear appropriate PPE: lab coat, safety glasses, and gloves.
• Reactivity/incompatibilities: Stable under ambient conditions. Avoid contact with strong oxidizers. Prolonged exposure to hot concentrated acids or oxidizing acid mixtures may lead to dissolution and release of metal/boron species.
• Thermal stability: Refractory; avoid overheating in air that could lead to surface oxidation.
• Environmental: Prevent release of powders to drains or natural waters; collect spills by gentle sweeping or HEPA vacuum.

First‑aid overview (general):

• Inhalation: Move to fresh air; seek medical attention if symptoms persist.
• Skin: Wash with soap and water.
• Eyes: Rinse cautiously with water for several minutes; remove contact lenses if present and easy to do.
• Ingestion: Rinse mouth; seek medical advice if unwell.

Always consult the product’s SDS for authoritative and lot‑specific safety information.

Solvent Selection

Not typically applicable: manganese boride is an insoluble, refractory inorganic solid and is not used as a molecular solute.

Practical handling media (literature/general):

• Aqueous media: Suspensions possible with surfactants or binders for slurry processing (e.g., tape casting, electrophoretic deposition).
• Organic media: Can be dispersed mechanically (shear/sonication) in high‑boiling solvents, polymer binders, or inks for coatings and composite fabrication.
• Electrocatalysis: Often integrated onto conductive substrates (Ni foam, carbon paper) using binders such as Nafion or PVDF in NMP or ethanol/isopropanol.

Selection tips:

• Choose dispersants/binders to match downstream processing temperature and substrate compatibility.
• For analytical studies, use solvents with low background for electrochemistry (e.g., IPA/H₂O with KOH) or for slurry‐coat electrode fabrication (NMP for PVDF systems).

Storage and Reconstitution

• Storage conditions (from Product Data): Room temperature.
• Shipped in: Not specified for this item; refer to CoA/Spec Sheet.

General guidance for inorganic boride powders:

• Keep container tightly closed in a dry environment; use desiccant if ambient humidity is high.
• Avoid prolonged exposure to air for high‑surface‑area powders to limit surface oxidation; store under inert gas if critical for your application.
• No reconstitution required (solid powder). For preparing dispersions or inks, use appropriate solvents/binders and sonication as described in Application Protocols.
• Shelf life: Stable when stored as directed; verify phase/surface state by PXRD/XPS before critical experiments.
• Packaging: If electrostatic or dusting is a concern, transfer under a fume hood using anti‑static measures.

Before first use, equilibrate the sealed container to room temperature to avoid condensation, then open in a dry atmosphere if moisture‑sensitivity is a concern for your workflow.

Structure and Identity

Manganese boride is an intermetallic/ceramic boride composed of manganese and boron; the monoboride stoichiometry is commonly denoted MnB.

• SKU: M949688
• Product Name: Manganese boride (MnB)
• CAS: 12045-15-7
• PubChem CID (literature): 82881
• InChIKey (as provided): 272316
• SMILES: Not applicable for extended inorganic solids; no discrete molecular SMILES (literature).
• Molecular formula (literature): MnB (binary boride; extended lattice, not a discrete molecule)
• Molecular weight (computed, literature): ~65.75 g/mol (Mn 54.94 + B 10.81)

Structural features (literature):

• Extended solid-state structure with metal–boron covalent/metallic bonding; commonly reported orthorhombic-type frameworks for MnB phases.
• No defined stereochemistry or molecular functional groups; properties arise from crystal packing and electron density in the lattice.
• 2D description: A periodic manganese sublattice interleaved with boron chains/nets, yielding a hard, conductive ceramic-like material rather than discrete molecules.

Notes:

• For intermetallic borides, identifiers like SMILES and conventional InChI often do not capture the non-molecular lattice; use CAS/CID and stoichiometry for unambiguous reference.

Synthetic Utility

While not a molecular reagent, manganese boride serves as a functional material in synthesis‑adjacent workflows.

Literature/general utilities:

• Heterogeneous catalyst/precatalyst: MnB surfaces can activate H–H and polar bonds, enabling hydrogenation, hydroboration, and deoxygenation pathways under appropriate conditions.
• Electrode/catalyst support: Conductive and chemically robust, usable as an active phase in electrocatalytic HER/OER systems.
• Hard filler: Incorporation into polymer/metal‑matrix composites for wear resistance; useful in tooling or protective coatings R&D.
• Reference in boriding studies: As a phase of interest when analyzing diffusion borided layers on steels (PXRD reference/benchmarking).

Retrosynthetic note: MnB is not a transfer reagent for “B” in classical solution chemistry; boron transfer typically relies on boranes/borates/organoborons. MnB’s role is primarily as a surface‑active solid rather than a stoichiometric boron or manganese donor in solution.

Target Specificity

Not applicable. This product is an inorganic material, not a biochemical probe, antibody, or targeted ligand. No antigen/epitope, clone, isotype, or species reactivity information applies.