Powder handling: De-lump gently in an inert atmosphere; sieve to desired fraction if needed.
Pre-anneal: Optional vacuum/inert anneal to remove surface adsorbates before critical syntheses.
Characterization: PXRD for phase ID, SEM for morphology, EDS/ICP for composition, and UV–Vis/PL (if optical studies are intended).
Refer to the literature and your institutional SOPs for detailed materials processing workflows.
Biological Roles
This product is an inorganic solid used in materials science and is not intended for biological use.
General context (literature)
Selenium is an essential trace element in biology (as selenocysteine/selenoproteins), but these roles pertain to bioavailable Se species, not insoluble SrSe solids.
Strontium has no established essential biological role in humans; certain soluble strontium salts interact with bone mineral in vitro, but such phenomena are unrelated to insoluble SrSe.
Applicability
Strontium selenide has no typical biological function or biochemical pathway relevance. It should not be used in biological systems except as an inert material in materials-focused experiments.
For any work involving biological matrices, ensure appropriate risk assessments are performed and do not infer bioactivity from this material.
Buffer Applications
Buffering is not applicable to strontium selenide.
Rationale
SrSe is an insoluble inorganic solid with no acid/base conjugate pair in solution; it does not form aqueous buffer systems.
If your workflow requires buffered conditions, select an appropriate aqueous buffer (e.g., phosphate, HEPES) independent of SrSe handling, and keep SrSe isolated from acidic solutions to avoid H2Se formation.
Green Alternatives
Choosing greener approaches with Sr–Se chemistry often centers on precursor selection and process design rather than replacing SrSe outright.
Greener strategies (literature/general)
Precursor choice: Instead of handling preformed SrSe, generate it in situ from SrCO3/Sr(OH)2 and elemental Se or Se–amine complexes, minimizing direct selenide dust handling.
Solution routes: Use lower-toxicity selenium donors (e.g., selenourea, sodium selenosulfate) in water/ethanol where appropriate, followed by thermal conversion to Sr–Se phases, to avoid organoselenium solvents.
Process intensification: Employ spark plasma sintering (SPS) or microwave-assisted solid-state synthesis to reduce dwell times and energy consumption compared with long furnace soaks.
Closed systems: Utilize sealed reactors with efficient off-gas scrubbing to minimize fugitive selenium emissions.
Comparison snapshot (general; not item specifications)
| Approach | Pros | Cons |
|---|---|---|
| Bulk SrSe + solid-state firing | Simple stoichiometry; high-purity achievable | High T/energy; dust handling; potential Se volatilization |
| In situ formation from SrCO3 + Se | Fewer transfers; reduced dust | Requires careful control of Se activity; CO2 byproduct |
| Solution precursors (selenourea, Se-amine) | Lower temperatures; scalable coating routes | Waste streams; precursor synthesis and toxicity considerations |
Takeaway
When possible, prioritize processes that minimize selenium volatilization, reduce energy input, and limit worker exposure to selenide dusts and H2Se risk.
Pharmaceutical Uses
Not applicable. Strontium selenide is not used as an excipient or pharmaceutical formulation aid.
Context (general)
Pharmaceutical/biopharma applications require well-characterized, biocompatible excipients. Insoluble metal selenides are not employed in this capacity.
Compliance note
No pharmacopeial monographs are associated with strontium selenide to our knowledge (literature). For any GMP-related inquiry, a different material class should be considered.
Physical Properties
Item-specific values (specs for this catalog item)
Appearance: Not specified for this item; refer to CoA/Spec Sheet.
Grade/Purity: Not specified for this item; refer to CoA/Spec Sheet.
Literature/general properties (for reference; not item specifications)
Phase at ambient conditions: Crystalline solid (literature)
Crystal structure: Rock-salt (NaCl-type, Fm-3m) at room temperature (literature)
Color/tone: Often reported as off-white to gray for bulk powders; actual appearance depends on preparation/impurities (literature)
Melting point: Reported to be high (refractory); consult primary references for exact values (literature; values vary with measurement and sample history)
Density: High relative density typical of alkaline-earth selenides; reported values depend on polymorph and porosity (literature)
Solubility: Insoluble in water and most organic solvents; reacts with strong acids to generate hydrogen selenide (H2Se) gas (literature)
Band gap: Wide-gap semiconductor; values reported in the visible-near IR range depending on preparation (literature)
Thermal behavior: Stable under inert atmosphere at elevated temperatures; can oxidize or hydrolyze slowly under humid/oxidizing environments (literature)
Notes
Where precise numerical values are critical (mp, density, band gap), consult authoritative databases or the specific batch CoA. Do not treat literature summaries as product specifications.
Quality & Grades
Item-specific quality information
Grade/Purity: Not specified for this item; refer to CoA/Spec Sheet.
Stabilizers/additives: Not specified for this item; refer to CoA/Spec Sheet.
Interpreting grades for strontium selenide (general guidance)
Semiconductor/optical grade: Emphasizes extremely low levels of light-absorbing impurities (transition metals, oxygen), controlled grain size, and low carbon/surface contamination. Suitable for thin films, single-crystal growth, and optoelectronic measurements.
Reagent grade: Suitable for solid-state synthesis, precursor use, or general materials research where ultra-low optical absorption is not critical.
Electronic grade metrics often include: total metal impurity (ppm), oxygen content, carbon/sulfur/halide content, and particle size distribution. For optical work, photoluminescence background and absorption edge clarity may be specified.
How this impacts use
Trace selenium oxides/oxy-selenides can introduce charge traps; stray alkali/transition metals can dope the lattice, shifting band gap and conductivity. For device-relevant studies, request impurity analyses and verify oxygen content.
Documentation
For batch-specific assay, trace-metal profile, particle size, and moisture/oxygen content: consult the lot CoA. If you require specific limits (e.g., total metals < X ppm, sieved particle size), contact Aladdin Scientific prior to ordering.
Reaction & Applications
Materials applications (literature/general)
II–VI semiconductor: SrSe is studied for optoelectronic properties (wide-gap, luminescence host), thin films, and heterostructures.
Solid-state synthesis precursor: Acts as a selenium-bearing source for preparing doped or mixed chalcogenides (e.g., SrSe:Eu phosphors or Sr–M–Se ternaries) via diffusion or metathesis.
Nanomaterials: Reported in syntheses of SrSe nanoparticles/nanocrystals and as a template for cation/anion exchange reactions (literature).
Transformations and processing (general guidance; not item specifications)
High-temperature reactions: Reacts with other solid oxides/selenides/halides at 700–1100 °C under inert/vacuum to form complex selenides.
Vapor processes: Can serve as a selenium source in sealed-ampoule reactions; ensure rigorous exclusion of moisture and oxygen.
Doping/activation: Incorporation of activator ions (e.g., Eu2+) into SrSe lattice can be achieved by co-sintering under reducing atmosphere to yield luminescent materials (literature).
Practical tips
Pre-dry under dynamic vacuum at moderate temperature to reduce surface moisture/oxide prior to sensitive syntheses.
Use inert crucibles (e.g., alumina, BN, high-purity graphite with caution) and avoid silica at very high temperatures if selenium activity is significant.
Pelletize or hot-press to improve green density and diffusion kinetics.
Safety reminder
Strictly avoid acids; sealed-ampoule syntheses must be properly designed to mitigate H2Se risks in case of accidental hydrolysis.
Reaction Conditions
General, literature-based guidance for working with SrSe in materials synthesis (not product specifications):
Solid-state synthesis
Atmosphere: Inert (Ar, N2) or dynamic vacuum; reducing H2/Ar mixes sometimes used for activator doping (e.g., Eu2+).
Temperature: Commonly 700–1100 °C depending on target phase and kinetics; dwell times range from 2–24 h with intermediate grinding.
Containers: Alumina or BN crucibles inside evacuated quartz ampoules; avoid direct contact with silica at very high selenium activity.
Compaction: Pelletizing or hot pressing improves diffusion and densification; SPS enables rapid cycles (minutes at peak T).
Vapor/ampoule routes
Loading under glovebox conditions is recommended. Include sacrificial Se to buffer selenium vapor pressure when forming Se-rich phases.
Employ slow heat ramps to minimize pressure spikes; validate ampoule thickness for expected internal pressure.
Wet-chemical/nano routes
Precursors: Sr salts (acetate, nitrate) + selenium donors (selenourea) in high-boiling polar solvents; thermal conversion to Sr–Se phases at 200–350 °C followed by annealing.
Ligands/surfactants: Long-chain amines or phosphines can direct particle size/shape; rigorous air/moisture exclusion required.
Yields/outcomes
Phase-pure products depend on stoichiometry, aSe, and temperature profile; monitor by PXRD. Reported yields are highly protocol-dependent (literature).
Safety note: Never allow contact with acids; risk of H2Se generation. Use appropriate gas scrubbing for any Se-containing off-gases.
Safety & Handling
Item-specific hazard/GHS
Signal word, H-statements, GHS classification, pictograms: Not specified for this item; refer to SDS.
General safety considerations for alkaline-earth selenides (literature/general; defer to SDS)
Toxicology: Selenium compounds can present toxicity. While SrSe is poorly soluble, finely divided powders and dust inhalation should be avoided.
Acid reactivity: Reacts with strong acids to release hydrogen selenide (H2Se), a highly toxic, flammable gas with a very low exposure threshold. Strictly avoid contact with acids.
Oxidation/moisture: Prolonged exposure to moisture/oxidizers can lead to surface hydrolysis/oxidation producing selenides/selenites and foul-smelling H2Se/H2Sex traces.
PPE and engineering controls
Use in a fume hood or glovebox when handling powders.
Wear safety glasses or face shield, lab coat, and appropriate gloves (e.g., nitrile). Consider respiratory protection if dust generation cannot be controlled (per risk assessment/SDS).
Storage and incompatibilities
Store tightly closed at room temperature, away from acids, oxidizers, and moisture. Inert-atmosphere storage is advisable for long-term stability of high-purity materials.
First aid (summary; follow SDS and institutional protocols)
Inhalation: Move to fresh air; seek medical attention.
Skin/eye contact: Rinse with water for at least 15 minutes; remove contaminated clothing; obtain medical advice.
Ingestion: Rinse mouth; do not induce vomiting; seek immediate medical attention.
Always consult the product’s SDS for authoritative, up-to-date hazard information.
Solvent Selection
This product is an inorganic ionic solid with negligible solubility in water and organic solvents; conventional “solvent selection” does not generally apply.
Practical notes (general)
Dispersion: For slurry processing (e.g., tape casting), non-aqueous media such as alcohols, glycols, or hydrocarbons may be used with dispersants; the solid remains as a particulate phase.
Surface processing: Short, controlled exposure to polar aprotic solvents (e.g., DMF, DMSO, NMP) may aid ink formulation for thin-film deposition when combined with binders; avoid moisture and acids.
Film growth: For solution-based routes to Sr–Se films, precursors (e.g., Sr salts + Se sources like selenourea or Se–amines) are typically used instead of preformed SrSe.
When to choose vs alternatives
Use bulk SrSe when your route is solid-state (e.g., reactive sintering, hot pressing, spark plasma sintering) or vapor-phase sources (e.g., as a starting material for evaporation/sulfurization/selenization processes).
Choose molecular precursors when true dissolution is required for spin-coating or inkjet routes.
Compatibility cautions
Avoid acidic media (risk of H2Se generation) and prolonged exposure to humid solvents. Employ dry, oxygen-free solvents and inert handling when purity is critical.
Keep container tightly closed in a dry, inert environment. Minimize exposure to moisture and oxidizing atmospheres to limit surface hydrolysis/oxidation.
Store away from acids to prevent formation of toxic hydrogen selenide (H2Se).
For long-term preservation of high-purity materials, consider secondary containment under argon or nitrogen (e.g., glovebox jar or desiccator with O2/H2O scavengers).
Reconstitution
Not applicable: SrSe is an insoluble inorganic solid; no reconstitution step is required. For slurry preparation, disperse in an appropriate anhydrous solvent with mechanical agitation or sonication as needed.
Handling after opening
If sub-dividing, perform in a dry box to reduce ambient moisture uptake. Reseal promptly. Record opening date and manage inventory by lot to maintain traceability.
Always consult the product’s CoA and SDS for any lot-specific instructions or precautions.
Structure & Identity
Brief overview: Strontium selenide is a binary II–VI inorganic compound of strontium and selenium, commonly considered a wide-gap semiconductor and used in materials science.
Item-specific (from Product Data)
SKU: S1511022
Product name: Strontium selenide
CAS: 1315-07-7
PubChem CID: 14619133
InChIKey: 470967 (as provided)
Storage: Room temperature; shipped under normal conditions
Research use: For research use only
Literature/general identity (for reference; not item specifications)
Molecular formula: SrSe (literature)
Formula type: Binary metal chalcogenide (II–VI class)
Common crystal structure: Rock-salt (NaCl-type, Fm-3m) at ambient conditions (literature)
Stoichiometry/features: Ionic lattice comprised of Sr2+ and Se2−; each ion octahedrally coordinated (literature)
SMILES / InChI: Not specified for this item; refer to CoA/Spec Sheet.
2D structural description (conceptual)
As an ionic solid, the “2D” representation depicts alternating Sr2+ and Se2− lattice points in a face-centered cubic array (rock-salt motif). There are no discrete molecular functional groups; bonding is predominantly ionic with some lattice covalency characteristic of II–VI semiconductors (literature).
Synthetic Utility
Role in synthesis (literature/general)
Binary precursor: SrSe serves as a selenium-bearing node in the construction of more complex selenides (A–B–Se systems) via solid-state diffusion and metathesis.
Doping platform: The Sr2+ sublattice can host activator ions (e.g., Eu2+) under reducing conditions to yield luminescent phases related to SrSe-based hosts.
Exchange chemistry: Under appropriate conditions, Sr2+ or Se2− can be partially substituted to access solid solutions (Sr1−xMxSe or SrSe1−ySy/Te), tuning band gaps and lattice parameters.
Typical transformations
Solid-state metathesis: SrSe + MX → SrX + MSe (M = transition metal; X = halide) at elevated temperatures, enabling synthesis of MSe phases.
Using SrSe isolates selenium activity from oxygen/carbon, simplifying mass balance versus oxide/carbonate routes. It can improve phase purity where carbonate decomposition (CO2 evolution) is undesirable.
Practical considerations
Control selenium activity (aSe) to suppress volatilization; use sealed ampoules or backfilled crucibles.
Pre-anneal SrSe to remove surface oxides before critical syntheses.
Characterize intermediates by PXRD and, if relevant, ICP-OES for Sr:Se:M stoichiometry.
Target Specificity
Not applicable. This product is an inorganic material, not a biological targeting reagent. No antigen, epitope, species reactivity, clone, or isotype information is relevant.
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