Selenium dioxide - CP, ≥98% , CAS No.7446-08-4

CAS: 7446-08-4 Cat. No.: S110871 Formula: SeO2 Molecular Weight: 110.96 EC Number: 231-194-7 PubChem CID: 24007
AVAILABLE TO ORDER
GRADE & PURITY CP ? Chemically Pure grade — moderate purity above technical grade but below analytical. Use for general lab reactions where ultra-low impurities aren't critical. ≥98%
Synonyms
Selenium oxide (SeO2) | SELENIUM OXIDE [MI] | WLN: SE O2 | NCGC00260145-01 | selenium (IV) dioxide | Selenium oxide (1:2) | Selenium oxide [NA2811] [Poison] | Selenium(IV) oxide | Selenonyl | A838139 | BP-21360 | SeO2 | AKOS015855284 | SELENIUM (IV) OXID
Storage
Room temperature,Desiccated
Shipped In
FedEx DG Service
★
Size
Germany (EU)
USA*
Price
Qty
25g
S110871-25g
Made to order · 8–12 wks

€15.53

€19.00
Save €3.47 (18.26%)
100g
S110871-100g
—
1 In stock

€39.83

€57.18
Save €17.35 (30.35%)
500g
S110871-500g
1 In stock
—

€138.75

€201.23
Save €62.48 (31.05%)
Enter a quantity for the sizes you want to add.
🧪
Why this grade

CP, ≥98% CP 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 216 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
Selenium oxide (SeO2) | SELENIUM OXIDE [MI] | WLN: SE O2 | NCGC00260145-01 | selenium (IV) dioxide | Selenium oxide (1:2) | Selenium oxide [NA2811] [Poison] | Selenium(IV) oxide | Selenonyl | A838139 | BP-21360 | SeO2 | AKOS015855284 | SELENIUM (IV) OXID
Specifications & Purity
CP, ≥98%
Storage
Room temperature,Desiccated
Shipped In
FedEx DG Service
Grade
CP
Purity
≥98%
Names and Identifiers
Pubchem Sid
Canonical Smiles
O=[Se]=O
IUPAC Name
selenium dioxide
InChIKey
JPJALAQPGMAKDF-UHFFFAOYSA-N
INCHI
1S/O2Se/c1-3-2
Isomeric SMILES
O=[Se]=O
WGK Germany
2
PubChem CID
24007
UN Number
3283
Packing Group
I
Molecular Weight
110.96

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 non-metal compounds
ClassOther non-metal organides
SubclassOther non-metal oxides
Intermediate Tree Nodes Not available
Direct ParentOther non-metal oxides
Alternative Parents Inorganic oxides  
Molecular FrameworkNot available
Substituents Other non-metal oxide - Inorganic oxide
DescriptionThis compound belongs to the class of inorganic compounds known as other non-metal oxides. These are inorganic compounds containing an oxygen atom of an oxidation state of -2, in which the heaviest atom bonded to the oxygen belongs to the class of 'other non-metals'.
External Descriptors Not available
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.

21 results found

Lot NumberCertificate TypeDateItem
A2309357Certificate of AnalysisSep 22, 2026 S110871
E2609577Certificate of AnalysisMay 12, 2026 S110871
E2609573Certificate of AnalysisMay 12, 2026 S110871
E2609570Certificate of AnalysisMay 12, 2026 S110871
A2627056Certificate of AnalysisFeb 04, 2026 S110871
L2107403Certificate of AnalysisSep 09, 2025 S110871
L2504040Certificate of AnalysisDec 12, 2024 S110871
L2416396Certificate of AnalysisDec 12, 2024 S110871
L2410716Certificate of AnalysisDec 12, 2024 S110871
K2504044Certificate of AnalysisDec 12, 2024 S110871
H2412282Certificate of AnalysisAug 28, 2024 S110871
H2412283Certificate of AnalysisAug 28, 2024 S110871
C2418097Certificate of AnalysisMar 20, 2024 S110871
E2324742Certificate of AnalysisMay 29, 2023 S110871
E2324771Certificate of AnalysisMay 29, 2023 S110871
E2324737Certificate of AnalysisMay 29, 2023 S110871
E2324558Certificate of AnalysisMay 29, 2023 S110871
A2309365Certificate of AnalysisJan 12, 2023 S110871
A2309359Certificate of AnalysisJan 12, 2023 S110871
A2309358Certificate of AnalysisJan 12, 2023 S110871
K2209117Certificate of AnalysisNov 11, 2022 S110871
Chemical and Physical Properties
SensitivityHygroscopic.
x_melt_point_char315°C
Molecular Weight110.970 g/mol
XLogP3
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count2
Rotatable Bond Count0
Exact Mass111.906 Da
Monoisotopic Mass111.906 Da
Topological Polar Surface Area34.100 Ų
Heavy Atom Count3
Formal Charge0
Complexity18.300
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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