Isotope Science / Alfa Chemistry

Comprehensive Guide to Metal Stable Isotopes | Alfa Chemistry

High-Purity Stable Isotopes for Research, Industry and Analytical Laboratories

Metal stable isotopes are non-radioatomic forms of elements with identical chemical properties but distinct atomic masses. At Alfa Chemistry, we supply a comprehensive range of high-purity metal stable isotopes and their labeled compounds. These products are indispensable tools for precise tracing, quantification, and mechanistic studies where conventional analytical methods fall short. Leveraging techniques like Isotope Dilution Mass Spectrometry (IDMS) and Multi-Collector ICP-MS (MC-ICP-MS), our materials enable breakthroughs in geochemistry, environmental science, biomedical research, and advanced material engineering.

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Overview of Metal Stable Isotopes

What Are Metal Stable Isotopes?

Metal stable isotopes are non-radioactive forms of metallic elements with varying numbers of neutrons. Unlike radioactive isotopes, they do not decay over time, making them safe and stable for long-term experimental use. These isotopes serve as powerful tracers in studying natural and industrial processes, enabling researchers to:

  • Trace the origin and migration of metals in environmental systems (e.g., soil, water, and organisms).
  • Investigate metabolic pathways and metal-protein interactions in biological systems.
  • Reconstruct paleoenvironmental conditions, such as ocean pH and redox states, using isotopic signatures.

Why Choose Metal Stable Isotopes?

  • No Radioactivity Risk: Stable isotopes provide isotopic tracing without radiation hazards or the regulatory burden of radioisotopes.
  • Quantitative Accuracy: In IDMS, stable isotopes enable highly accurate and precise quantification of elemental concentrations.
  • Chemical Fidelity: Isotopes behave identically in chemistry, allowing a labeled reagent to substitute for the native element without changing reaction pathways.
  • Versatile Formats: Enriched elemental metals, salts, organometallics, spike solutions and certified standards for ICP-MS, TIMS, GC-MS, LC-MS and NMR workflows.

Isotopic Fractionation Mechanisms

Metal stable isotopes undergo mass-dependent fractionation during physical, chemical, or biological processes, where lighter isotopes react or diffuse slightly faster than heavier ones. This creates distinct isotopic "fingerprints" that reveal:

  • Redox Reactions: e.g., Fe(II)/Fe(III) transformations alter δ56Fe values.
  • Biological Uptake: microorganisms preferentially incorporate light isotopes of Mg or Zn.
  • Adsorption and Precipitation: clay minerals or carbonates may enrich specific isotopes like 88Sr or 44Ca.

Product Portfolio & Types of Metal Stable Isotopes

1. Product Types and Formats We Provide

2. Alkali & Alkaline Earth Metals

3. Transition Metals

4. Heavy Metals & Metalloids

5. Rare Earth & Platinum Group

6. Custom-Labeled Compounds

1. Product Types and Formats We Provide

  • Enriched elemental metal (powder, foil, shot) — for materials science and synthesis.
  • Enriched salts and compounds — chloride, oxide, carbonate, nitrate, sulfate and other forms convenient for solution chemistry and spike preparation.
  • Traceable spike solutions — acidified, matrix-matched, calibrated concentration and isotopic composition for IDMS and instrument calibration.
  • Organometallics and labeled complexes — application-specific complexes for catalysis and mechanistic work.
  • Isotope-labelled reagents (deuterated/13C etc.) — for combined stable isotope and organic labeling studies.

2. Alkali & Alkaline Earth Metals

Forms & Applications: Carbonates, hydroxides, chlorides. Used in climate proxies, battery research, and medical imaging.

Example Products: Lithium-6/7 carbonate, hydroxide; Calcium-42/43/44 carbonate; Barium-135/137/138 carbonate; Strontium-86/87/88 carbonate.

Recommended Products:

CatalogNamePrice
ACM76576675Lithium-6 hydroxide monohydrateInquiry
ACM76576686Lithium-7 hydroxide monohydrateInquiry
ACM25890204-1Lithium-6 carbonateInquiry
ACM20227310Lithium-6 chlorideInquiry
ACM14885655Lithium-6 fluorideInquiry
ACMA00026857Lithium-6 oxideInquiry
ACMA00026858Lithium-6 sulfateInquiry
ACM71552937Lithium-7 carbonateInquiry
ACM17409879-1Lithium-7 fluorideInquiry
ACMA00026859Lithium-7 oxideInquiry
ACMA00026821Calcium-42 carbonateInquiry
ACMA00026822Calcium-43 carbonateInquiry
ACM419569281Calcium-44 carbonateInquiry
ACM14255039Calcium-44Inquiry
ACM133954388Calcium-44 chlorideInquiry
ACMA00026802Barium-135 carbonateInquiry
ACMA00026803Barium-135 nitrateInquiry
ACMA00026805Barium-137 carbonateInquiry
ACMA00026806Barium-138 carbonateInquiry
ACMA00026889Strontium 86 carbonateInquiry
ACMA00026890Strontium 87 carbonateInquiry
ACMA00026891Strontium 88 carbonateInquiry

3. Transition Metals

Forms & Applications: Metals, oxides, salts. Critical for metallomics, corrosion studies, and catalytic research.

Example Products: Copper-63/65 (metal & oxide); Nickel-58/60/62; Chromium-50/53 (metal & oxide); Molybdenum-94/98 trioxide.

Recommended Products:

CatalogNamePrice
ACM14191845Copper-63Inquiry
ACMA00026832Copper-63 oxideInquiry
ACM14119063Copper-65Inquiry
ACMA00026833Copper-65 oxideInquiry
ACM13981798Nickel-58Inquiry
ACM13981801Nickel-60Inquiry
ACM13981812Nickel-62Inquiry
ACMA00018979Nickel-54Inquiry
ACM14304940Chromium-50Inquiry
ACMA00026828Chromium-50 oxideInquiry
ACM13981787Chromium-53Inquiry
ACMA00026830Chromium-53 oxideInquiry
ACMA00026831Chromium-54 oxideInquiry
ACM14304973Chromium-54Inquiry
ACM14683002Molybdenum-94Inquiry
ACMA00026866Molybdenum-94 trioxideInquiry
ACMA00026869Molybdenum-98 trioxideInquiry
ACM14191674Molybdenum-92Inquiry
ACM14392202Molybdenum-98Inquiry
ACM14392213Molybdenum-100Inquiry

4. Heavy Metals & Metalloids

Forms & Applications: Elements, oxides, organometallics. Essential for pollution tracing and semiconductor doping.

Example Products: Cadmium-106/110/114 (metal & oxide); Tin-112/118 (metal & organotins); Antimony-121/123; Tellurium-122/126.

Recommended Products:

CatalogNamePrice
ACM14378393Cadmium-106Inquiry
ACMA00026807Cadmium-106 oxideInquiry
ACMA00026811Cadmium-111 chlorideInquiry
ACMA00026812Cadmium-111 oxideInquiry
ACMA00026816Cadmium-113 chlorideInquiry
ACMA00026817Cadmium-113 oxideInquiry
ACMA00026818Cadmium-114 oxideInquiry
ACMA00026819Cadmium-116 oxideInquiry
ACMA00018897Cadmium-110Inquiry
ACMA00018941Cadmium-118Inquiry
ACM14041588Cadmium-114Inquiry
ACM14336642Cadmium-111Inquiry
ACM15125538Tin-112Inquiry
ACM14914659Tin-118Inquiry
ACM14314353Tin-119Inquiry
ACMA00026894Tin-119 oxideInquiry
ACM14265726Antimony 121Inquiry
ACM14119165Antimony 123Inquiry
ACM14390740-1Tellurium 126Inquiry
ACMA00019996Tellurium-124Inquiry
ACM14390717Tellurium-122Inquiry
ACM14390751Tellurium-128Inquiry
ACM14390762Tellurium-130Inquiry

5. Rare Earth & Platinum Group

Forms & Applications: Oxides, nitrates, metals. Applied in geological dating, nuclear studies, and advanced catalysts.

Example Products: Dysprosium-160/164 oxide; Erbium-168/170 oxide; Lutetium-175/176 oxide; Palladium-102/108; Platinum-194/198.

Recommended Products:

CatalogNamePrice
ACMA00026834Dysprosium-160 oxideInquiry
ACMA00026837Dysprosium-164 oxideInquiry
ACMA00026839Erbium-166 oxideInquiry
ACMA00026840Erbium-168 oxideInquiry
ACMA00026841Erbium-170 oxideInquiry
ACMA00026860Lutetium-175Inquiry
ACMA00026861Lutetium-175 oxideInquiry
ACM14452472Lutetium-176Inquiry
ACMA00026862Lutetium-176 oxideInquiry
ACMA00026872Palladium 102Inquiry
ACMA00026873Palladium 104Inquiry
ACM15749572Palladium 105Inquiry
ACMA00026874Palladium-105 nitrateInquiry
ACM15749583Palladium-108Inquiry
ACMA00026875Palladium-108 nitrateInquiry
ACMA00026877Platinum 194Inquiry
ACMA00026878Platinum 196Inquiry
ACMA00026879Platinum 198Inquiry

6. Custom-Labeled Compounds

Forms & Applications: Chemically synthesized with stable isotopes (e.g., 2H, 13C, 15N, 18O) at specific molecular positions. Enables detailed mechanistic studies in organic chemistry and biochemistry.

Example Products: Silver cyanide-13C,15N; Tetraphenyl-d20-tin; Aluminum oxide-18O3; Triphenyl-d15-tin hydroxide.

Recommended Products:

CatalogNamePrice
ACM285978214Silver cyanide-13C,15NInquiry
ACM358731938Tetraphenyl-d20-tinInquiry
ACMA00026801Aluminum oxide-18O3Inquiry
ACM358731949Triphenyl-d15-tin chlorideInquiry
ACMA00026897Triphenyl-d15-tin hydroxideInquiry

Product-Driven Selection Guide

01

1 — IDMS / ultra-trace quantification

  • Preferred product: certified spike solutions or easily-digestible salts (chlorides, nitrates) with high enrichment and full COA.
  • Examples from catalogue: 65Cu spike solutions, multi-element mixed spikes, enriched 206/207/208 Pb salts.
02

2 — Geochemistry & provenance

  • Preferred product: high-purity carbonate or chloride salts (e.g., SrCO3, CaCO3) with documented isotopic composition.
  • Examples from catalogue: 87Sr/86Sr standards, enriched Ca carbonates for matrix-matched calibrations.
03

3 — Catalysis & mechanistic studies

  • Preferred product: enriched elemental metals or organometallic complexes; Mössbauer-friendly isotopes (e.g., 57Fe) and deuterated ligands to disentangle vibrational contributions.
  • Examples from catalogue: 57Fe metal/compounds, deuterated organotin reagents listed in the product file.
04

4 — Biomedical tracer studies (non-radioactive)

  • Preferred product: soluble salts or complexes meeting sterility/endotoxin specifications if required; trace-metal impurity limits tightened for biological matrices.
05

5 — Instrument calibration and QC

  • Preferred product: certified multi-isotope spike solutions and single-element standards in acid matrices compatible with ICP-MS/TIMS.

Case Studies: Leveraging Metal Stable Isotopes in Research

Case Study 1: Environmental IDMS: Multi‑Element Spike Implementation

Challenge: A commercial environmental testing laboratory faced persistent method bias and poor inter-laboratory comparability when measuring trace metals (Cu, Ni, Cd) in complex soil and sediment extracts.

Solution: Alfa Chemistry supplied a custom mixed multi‑element spike solution containing highly enriched 65Cu, 60Ni and selected Cd isotopes in an acidified, matrix‑matched solution.

Results: The laboratory reported a marked reduction in method bias and improved agreement with certified reference materials. Precision of low‑level quantification improved, enabling confident regulatory reporting and reduced rework.

Case Study 2: Optical Materials: Enriched Erbium Standards for Laser Characterization

Challenge: A photonics R&D team required highly enriched erbium isotopes to precisely characterize relaxation pathways in doped laser crystals. Natural abundance materials produced convoluted spectral features.

Solution: Alfa Chemistry provided enriched 166Er and 168Er oxides with documented isotopic composition and low trace‑metal impurities.

Results: Spectroscopic clarity improved, enabling unambiguous assignment of relaxation channels. Material reproducibility increased across production batches, helping accelerate prototype development.

Case Study 3: Developing a Next-Generation Lithium-Ion Battery Electrolyte

Challenge: An energy laboratory needed to understand the degradation pathway of a novel lithium salt electrolyte.

Solution: We supplied Lithium-6 hydroxide monohydrate and Lithium-7 carbonate of the highest purity. These were used to synthesize two batches of the lithium salt, each with a distinct Li isotope.

Results: By using the isotopically labeled salts in a "checkerboard" experiment, researchers could track the movement of lithium from different origins within the cell using post-mortem Li-NMR, elucidating the primary failure mechanism.

Why Choose Alfa Chemistry?

Comprehensive Isotope Inventory

We offer a wide range of metal stable isotopes across elemental forms, oxides, salts and organometallics — from light elements (Li, Mg) to lanthanides and heavier metals.

Traceable Quality & Documentation

Supported by a CoA detailing isotopic composition, measured ratios, uncertainty estimates and impurity profiles, etc.

Technical Partnership

Our technical team assists with product selection, method transfer guidance, and troubleshooting. We partner with customers during method validation and can provide application notes tailored to IDMS, TIMS, ICP‑MS, or NMR workflows.

Reliability & Scalability

From single‑sample research needs to kilogram‑scale production, we can scale manufacturing while maintaining isotopic accuracy and contamination control.

Customer Voices

"We used Alfa Chemistry's enriched Copper-65 oxide to develop a novel nanoparticle tracer for in vivo imaging. The consistent physical form and purity allowed for reproducible nanoparticle synthesis, which was critical for our biomedical study's success."

— Dr. Anika Sharma,

Lead Scientist, Nanomedicine Lab

"The 57Fe and deuterated organotin reagents from Alfa Chemistry were decisive in completing our mechanistic study. Their technical support was superb."

— Prof. Michael Turner,

Principal Investigator

"Synthesizing deuterium-labeled organotin compounds in-house was a major bottleneck. Alfa Chemistry's off-the-shelf Triphenyl-d15-tin hydroxide and custom Tetra-n-butyl-d36-tin accelerated our kinetic studies of catalytic reactions by months. The quality and documentation were impeccable."

— Prof. Marco Rossi,

Inorganic Chemistry Lab

FAQs About Metal Stable Isotopes

Q: What is the difference between a 'metal stable isotope' and a 'stable isotope-labeled compound'?

A: A metal stable isotope refers to the enriched elemental form (e.g., Cadmium-114 metal). A stable isotope-labeled compound (e.g., Triphenyl-d15-tin chloride) is a synthesized molecule where specific atoms (like hydrogen) have been replaced by their stable isotopes (deuterium).

Q: What analytical data do you provide?

A: We provide a comprehensive Certificate of Analysis (CoA) for each product, which includes isotopic enrichment percentages, chemical purity (by ICP-MS), and, for compounds, structural verification data (like NMR or FT-IR spectra when applicable).

Q: How do I handle and store these materials?

A: Guidelines vary by product. Elemental metals and oxides are generally stable. Hygroscopic salts (e.g., chlorides) must be stored in a desiccator. Air- or moisture-sensitive organometallics (e.g., n-Butyl-d9-tin trichloride) require handling under inert atmosphere (argon/glovebox). It is recommended that you refer to the specific product's Safety Data Sheet (SDS) and operating instructions.

Q: Can you provide isotopes in a form not listed in your catalog?

A: Yes. Our catalog represents our standard inventory. We specialize in custom synthesis and conversion. For instance, we can convert a listed oxide into a specific salt, complex, or target organometallic compound to meet your exact experimental requirements.

Q: What are typical lead times and availability for enriched isotopes?

A: Lead times depend on isotope, enrichment level, and chemical form. Common research-grade isotopes in standard salts or solutions often ship within 2–6 weeks. Custom enrichment levels, uncommon isotopes, or unusual chemical forms may require longer (8–16 weeks or more). Contact our sales team with the product code for an exact lead time.

Q: How do you verify isotopic enrichment and purity?

A: Isotopic composition is verified by high‑precision mass spectrometry (TIMS or MC‑ICP‑MS) and reported on the COA with uncertainty. Chemical purity and trace impurities are measured by ICP‑MS/OES or other techniques as appropriate.

Q: Can I request small evaluation samples before bulk ordering?

A: Yes — small evaluation samples are available for most products (subject to MOQs and availability). Samples are helpful for method validation and matrix compatibility testing prior to larger purchases.

Related Resources

Check out our latest updates on metal stable isotopes, from selection guides, technical insights, and cutting-edge research.

Applications of Metal Stable Isotope Tagging in Bioanalysis

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