Silicon powder - ≥99.9% metals basis, 1-3μm , CAS No.7440-21-3

CAS: 7440-21-3 Cat. No.: S401567 Formula: Si Molecular Weight: 28.09 EC Number: 231-130-8 PubChem CID: 5461123
AVAILABLE TO ORDER
GRADE & PURITY ≥99.9% metals basis 1-3μm
Synonyms
Silicon | elemental silicon | polyeristalline silicon powder | silicium
Storage
Room temperature,Desiccated
Shipped In
FedEx DG Service
★
Size
Germany (EU)
USA*
Price
Qty
25g
S401567-25g
—
5 In stock

€17.27

€20.74
Save €3.47 (16.74%)
100g
S401567-100g
—
3 In stock

€50.24

€58.92
Save €8.68 (14.73%)
500g
S401567-500g
Made to order · 8–12 wks
€206.44
Enter a quantity for the sizes you want to add.
🧪
Why this grade

≥99.9% metals basis, 1-3μm for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Room temperature,Desiccated Ships FedEx DG Service 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 160 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
Silicon | elemental silicon | polyeristalline silicon powder | silicium
Specifications & Purity
≥99.9% metals basis, 1-3μm
Storage
Room temperature,Desiccated
Shipped In
FedEx DG Service
Purity
≥99.9% metals basis
Product Line
S401567-25g
Names and Identifiers
Pubchem Sid
Pubchem Sid Url
https://pubchem.ncbi.nlm.nih.gov/substance/508815156
Canonical Smiles
[Si]
IUPAC Name
silicon
InChIKey
XUIMIQQOPSSXEZ-UHFFFAOYSA-N
INCHI
1S/Si
Isomeric SMILES
[Si]
WGK Germany
2
RTECS
VW0400000
PubChem CID
5461123
Molecular Weight
28.09

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 metalloid compounds
SubclassNot available
Intermediate Tree Nodes Not available
Direct ParentHomogeneous metalloid compounds
Alternative Parents Not available
Molecular FrameworkNot available
Substituents Homogeneous metalloid
DescriptionThis compound belongs to the class of inorganic compounds known as homogeneous metalloid compounds. These are inorganic compounds containing only metal atoms,with the largest atom being a metalloid atom.
External Descriptors nonmetal atom - carbon 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.

25 results found

Lot NumberCertificate TypeDateItem
I2628701Certificate of AnalysisSep 22, 2026 S401567
I2628700Certificate of AnalysisSep 22, 2026 S401567
G2608619Certificate of AnalysisJun 30, 2026 S401567
G2608582Certificate of AnalysisJun 30, 2026 S401567
A2629612Certificate of AnalysisJan 22, 2026 S401567
A2629615Certificate of AnalysisJan 22, 2026 S401567
I2518495Certificate of AnalysisApr 01, 2025 S401567
I2518497Certificate of AnalysisApr 01, 2025 S401567
D2511449Certificate of AnalysisApr 01, 2025 S401567
D2511450Certificate of AnalysisApr 01, 2025 S401567
F2424423Certificate of AnalysisJun 11, 2024 S401567
F2424417Certificate of AnalysisJun 11, 2024 S401567
D2410277Certificate of AnalysisApr 01, 2024 S401567
D2410278Certificate of AnalysisApr 01, 2024 S401567
D2410276Certificate of AnalysisApr 01, 2024 S401567
A2404321Certificate of AnalysisDec 25, 2023 S401567
A2404309Certificate of AnalysisDec 25, 2023 S401567
J2325652Certificate of AnalysisOct 12, 2023 S401567
J2325647Certificate of AnalysisOct 12, 2023 S401567
H2307128Certificate of AnalysisJul 22, 2023 S401567
H2307126Certificate of AnalysisJul 22, 2023 S401567
C23241530Certificate of AnalysisMar 11, 2023 S401567
C23241529Certificate of AnalysisMar 11, 2023 S401567
A2213290Certificate of AnalysisJan 18, 2022 S401567
A2213284Certificate of AnalysisJan 18, 2022 S401567
Chemical and Physical Properties
SensitivityMoisture sensitive
x_boil_point_char2355°C
x_melt_point_char1410°C
Molecular Weight28.085 g/mol
XLogP3
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count0
Rotatable Bond Count0
Exact Mass27.9769 Da
Monoisotopic Mass27.9769 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
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Thermoelectric Materials Selection Guide: Evaluation Framework, Temperature-Range–System Map, and Modularization Gatekeeping Criteria (with Product Navigation Tables 1–4)
Optical & Optoelectronic Materials Selection Guide:Positioning materials, key metrics, and validation paths along “Generation → Guiding → Control → Readout” (with product navigation and Tables 1–4)
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Citations of This Product
Solution Calculators
Reviews

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