Niobium - ≥99.95% metals basis, ≥325目 , CAS No.7440-03-1

CAS: 7440-03-1 Cat. No.: N108764 Formula: Nb Molecular Weight: 92.91 EC Number: 231-113-5
AVAILABLE TO ORDER
GRADE & PURITY ≥99.95% metals basis ≥325目
Synonyms
EC 231-113-5 | Nb 106 | Niobium foil, 2.0mm (0.08in) thick | Niobium wire, 0.5mm (0.02in) dia | Niobium, foil, thickness 0.25 mm, size 50 x 50 mm, purity 99.9% | Niobium, rod, 200mm, diameter 10.0mm, annealed, 99.9% | UNII-05175J654G | Niobium Nanoprisms
Storage
Room temperature
Shipped In
Normal
★
Size
Germany (EU)
USA*
Price
Qty
1g
N108764-1g
3 In stock
3 In stock
€8.59
5g
N108764-5g
—
4 In stock

€17.27

€19.87
Save €2.60 (13.10%)
25g
N108764-25g
—
7 In stock

€48.51

€58.92
Save €10.41 (17.67%)
100g
N108764-100g
—
5 In stock

€168.25

€208.17
Save €39.92 (19.17%)
Enter a quantity for the sizes you want to add.
🧪
Why this grade

≥99.95% metals basis, ≥325目 for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Room temperature Ships Normal Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 61 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
EC 231-113-5 | Nb 106 | Niobium foil, 2.0mm (0.08in) thick | Niobium wire, 0.5mm (0.02in) dia | Niobium, foil, thickness 0.25 mm, size 50 x 50 mm, purity 99.9% | Niobium, rod, 200mm, diameter 10.0mm, annealed, 99.9% | UNII-05175J654G | Niobium Nanoprisms
Specifications & Purity
≥99.95% metals basis, ≥325目
Storage
Room temperature
Shipped In
Normal
Purity
≥99.95% metals basis
Names and Identifiers
Pubchem Sid
Pubchem Sid Url
https://pubchem.ncbi.nlm.nih.gov/substance/488182845
Canonical Smiles
[Nb]
IUPAC Name
niobium
InChIKey
GUCVJGMIXFAOAE-UHFFFAOYSA-N
INCHI
1S/Nb
Isomeric SMILES
[Nb]
WGK Germany
nwg
RTECS
QT9900000
Molecular Weight
92.91

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomInorganic compounds
SuperclassHomogeneous metal compounds
ClassHomogeneous transition metal compounds
SubclassNot available
Intermediate Tree Nodes Not available
Direct ParentHomogeneous transition metal compounds
Alternative Parents Not available
Molecular FrameworkNot available
Substituents Homogeneous transition metal
DescriptionThis compound belongs to the class of inorganic compounds known as homogeneous transition metal compounds. These are inorganic compounds containing only metal atoms,with the largest atom being a transition metal atom.
External Descriptors vanadium group element atom
3D Structure
Interactive Chemical Structure Model





Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

14 results found

Lot NumberCertificate TypeDateItem
L2503511Certificate of AnalysisNov 22, 2025 N108764
L2503525Certificate of AnalysisNov 22, 2025 N108764
L2503614Certificate of AnalysisNov 22, 2025 N108764
G2117158Certificate of AnalysisMay 09, 2025 N108764
E2509384Certificate of AnalysisApr 16, 2025 N108764
E2509385Certificate of AnalysisApr 16, 2025 N108764
E2509386Certificate of AnalysisApr 16, 2025 N108764
E2509404Certificate of AnalysisApr 16, 2025 N108764
B2311379Certificate of AnalysisJun 17, 2022 N108764
G2220575Certificate of AnalysisJun 17, 2022 N108764
G2220576Certificate of AnalysisJun 17, 2022 N108764
G2220577Certificate of AnalysisJun 17, 2022 N108764
J2430722Certificate of AnalysisJun 17, 2022 N108764
B2311378Certificate of AnalysisMay 29, 2021 N108764
Chemical and Physical Properties
SensitivityMoisture sensitive.
Boil Point(°C)4742°C
Melt Point(°C)2468±10°C
Molecular Weight92.906 g/mol
XLogP3
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count0
Rotatable Bond Count0
Exact Mass92.9064 Da
Monoisotopic Mass92.9064 Da
Topological Polar Surface Area0.000 Ų
Heavy Atom Count1
Formal Charge0
Complexity0.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
Citations of This Product
Solution Calculators
Reviews

Customer Reviews

Frequently Asked Questions

What does the trace-metals specification mean?
This product is specified at ≥99.95% on a trace-metals basis. That figure describes metallic impurity content rather than overall chemical assay, so it is the relevant specification for ICP-MS, semiconductor and battery applications. Lot-specific values are stated on the Certificate of Analysis.
How should this product be stored?
Store at room temperature.
How is this product shipped?
This product ships under standard ambient conditions. No temperature-controlled packaging is required.
What are the CAS number, molecular formula and molecular weight?
The CAS Number is 7440-03-1, the molecular formula is Nb, and the molecular weight is 92.91 g/mol. InChIKey GUCVJGMIXFAOAE-UHFFFAOYSA-N.
What documentation is provided?
Available product documentation, including Certificates of Analysis (COA), Safety Data Sheets (SDS), and specification sheets, is shown in the product document area. Document availability and access follow the current site policy.

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