Silicon Standard - PureSpectra™, Spectrum pure , CAS No.7440-21-3

CAS: 7440-21-3 Cat. No.: S108978 Formula: Si Molecular Weight: 28.09 EC Number: 231-130-8 PubChem CID: 5461123
AVAILABLE TO ORDER
GRADE & PURITY PureSpectra™ ? PureSpectra™ — Aladdin's premium line for spectroscopy applications. Use where low spectral background ensures clean UV/Vis/IR measurements. Spectrum pure ? Spectrum-pure grade with impurities controlled to a spectroscopically clean baseline. Use for spectroscopy where background signals must be minimal.
Synonyms
7440-21-3|Si|Silicon|Silicone|Silicon powder|Z4152N8IUI|90337-93-2|DTXSID0051441|CHEBI:27573|MFCD00085311|Silicon metal|SILICON (II)|SILICON [II]|SILICON (MART.)|SILICON [MART.]|Defoamer S-10|silicio|Silicon dust|MFCD00011228|Silicon, elemental|Silicon po
Storage
Room temperature
Shipped In
FedEx DG Service
★
Size
Germany (EU)
USA*
Price
Qty
10g
S108978-10g
—
3 In stock
€16.40
50g
S108978-50g
3 In stock
4 In stock
€64.13
100g
S108978-100g
—
2 In stock
€100.57
500g
S108978-500g
Made to order · 8–12 wks
€344.41
Enter a quantity for the sizes you want to add.
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Why this grade

PureSpectra™, Spectrum pure PureSpectra™,Spectrum pure for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Room temperature 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
7440-21-3 | Si | Silicon | Silicone | Silicon powder | Z4152N8IUI | 90337-93-2 | DTXSID0051441 | CHEBI:27573 | MFCD00085311 | Silicon metal | SILICON (II) | SILICON [II] | SILICON (MART.) | SILICON [MART.] | Defoamer S-10 | silicio | Silicon dust | MFCD00011228 | Silicon, elemental | Silicon po
Specifications & Purity
PureSpectra™, Spectrum pure
Storage
Room temperature
Shipped In
FedEx DG Service
Grade
PureSpectra™, Spectrum pure
Names and Identifiers
Pubchem Sid
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.

5 results found

Lot NumberCertificate TypeDateItem
A2220123Certificate of AnalysisOct 29, 2025 S108978
A2220459Certificate of AnalysisOct 29, 2025 S108978
A2220460Certificate of AnalysisOct 29, 2025 S108978
A2220461Certificate of AnalysisOct 29, 2025 S108978
K1805032Certificate of AnalysisSep 12, 2022 S108978
Chemical and Physical Properties
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
FAQs and Articles
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Citations of This Product
Solution Calculators
Reviews

Customer Reviews

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