Boron oxide - AR, ≥98% , CAS No.1303-86-2

CAS: 1303-86-2 Cat. No.: B108406 Formula: B2O3 Molecular Weight: 69.62 EC Number: 215-125-8
AVAILABLE TO ORDER
GRADE & PURITY AR ? Analytical Reagent grade — high-purity chemicals meeting strict assay limits for lab analysis. Use when accuracy matters and trace impurities could skew results. ≥98%
Synonyms
Diboron trioxide | Boric anhydride, 99.98% trace metals basis | Boric anhydride; | Boric Anhydride (Boron Trioxide B2O3) granular | Boric anhydride, puriss. p.a., >=98% (T) | Titanium Nitride (TiN) Powder | Boric anhydride, Vetec(TM) reagent grade, 98% |
Storage
Room temperature,Argon charged,Desiccated
Shipped In
Normal
★
Size
Germany (EU)
USA*
Price
Qty
100g
B108406-100g
—
3 In stock
€10.33
500g
B108406-500g
—
3 In stock
€23.34
12×500g
B108406-12×500g
Made to order · 8–12 wks
€221.19
Enter a quantity for the sizes you want to add.
🧪
Why this grade

AR, ≥98% AR for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Room temperature,Argon charged,Desiccated 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 236 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
Diboron trioxide | Boric anhydride, 99.98% trace metals basis | Boric anhydride; | Boric Anhydride (Boron Trioxide B2O3) granular | Boric anhydride, puriss. p.a., >=98% (T) | Titanium Nitride (TiN) Powder | Boric anhydride, Vetec(TM) reagent grade, 98% |
Specifications & Purity
AR, ≥98%
Storage
Room temperature,Argon charged,Desiccated
Shipped In
Normal
Grade
AR
Purity
≥98%
Names and Identifiers
Pubchem Sid
Pubchem Sid Url
https://pubchem.ncbi.nlm.nih.gov/substance/508814013
Canonical Smiles
B(=O)OB=O
IUPAC Name
oxo(oxoboranyloxy)borane
InChIKey
JKWMSGQKBLHBQQ-UHFFFAOYSA-N
INCHI
1S/B2O3/c3-1-5-2-4
Isomeric SMILES
B(=O)OB=O
WGK Germany
1
Molecular Weight
69.62
Reaxy-Rn
9549840
Reaxys-RN_link_address
https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=9549840&ln=

Documentation

📋 Safety Data Sheet (SDS)

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

<<<<<<< HEAD Download SDS → ======= Download SDS → >>>>>>> release248-p3

✅ 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
SuperclassMixed metal/non-metal compounds
ClassMetalloid organides
SubclassMetalloid oxides
Intermediate Tree Nodes Not available
Direct ParentMetalloid oxides
Alternative Parents Metalloid salts  Inorganic salts  Inorganic oxides  
Molecular FrameworkNot available
Substituents Metalloid oxide - Inorganic oxide - Inorganic salt - Inorganic metalloid salt
DescriptionThis compound belongs to the class of inorganic compounds known as metalloid oxides. These are inorganic compounds containing an oxygen atom of an oxidation state of -2, in which the heaviest atom bonded to the oxygen is a metalloid.
External Descriptors boron oxide
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.

42 results found

Lot NumberCertificate TypeDateItem
J2629183J2629183Certificate of AnalysisOct 20, 2026 B108406
J2612564J2612564Certificate of AnalysisOct 08, 2026 B108406
I2603753I2603753Certificate of AnalysisAug 29, 2026 B108406
G2602124G2602124Certificate of AnalysisJun 27, 2026 B108406
G2602122G2602122Certificate of AnalysisJun 27, 2026 B108406
D2617243D2617243Certificate of AnalysisApr 07, 2026 B108406
D2617249D2617249Certificate of AnalysisApr 07, 2026 B108406
D2617246D2617246Certificate of AnalysisApr 07, 2026 B108406
B2627354B2627354Certificate of AnalysisDec 01, 2025 B108406
L2510207L2510207Certificate of AnalysisDec 01, 2025 B108406
L2510206L2510206Certificate of AnalysisDec 01, 2025 B108406
B2627353B2627353Certificate of AnalysisDec 01, 2025 B108406
B2627374B2627374Certificate of AnalysisDec 01, 2025 B108406
K2510212K2510212Certificate of AnalysisOct 31, 2025 B108406
K2510213K2510213Certificate of AnalysisOct 31, 2025 B108406
D2502168D2502168Certificate of AnalysisApr 08, 2025 B108406
D2502167D2502167Certificate of AnalysisApr 08, 2025 B108406
F2505298F2505298Certificate of AnalysisApr 01, 2025 B108406
F2505299F2505299Certificate of AnalysisApr 01, 2025 B108406
F2505300F2505300Certificate of AnalysisApr 01, 2025 B108406
J2424638J2424638Certificate of AnalysisOct 14, 2024 B108406
J2424637J2424637Certificate of AnalysisOct 14, 2024 B108406
J2424913J2424913Certificate of AnalysisOct 14, 2024 B108406
H2421136H2421136Certificate of AnalysisMay 14, 2024 B108406
E2428059E2428059Certificate of AnalysisMay 10, 2024 B108406
E2428060E2428060Certificate of AnalysisMay 10, 2024 B108406
E2430023E2430023Certificate of AnalysisMay 10, 2024 B108406
A2403157A2403157Certificate of AnalysisJan 18, 2024 B108406
A2403158A2403158Certificate of AnalysisJan 18, 2024 B108406
A2403156A2403156Certificate of AnalysisJan 18, 2024 B108406
D2303544D2303544Certificate of AnalysisFeb 18, 2023 B108406
C2302513C2302513Certificate of AnalysisFeb 18, 2023 B108406
C2302106C2302106Certificate of AnalysisFeb 18, 2023 B108406
C2302105C2302105Certificate of AnalysisFeb 18, 2023 B108406
H2217124H2217124Certificate of AnalysisJun 27, 2022 B108406
H2217125H2217125Certificate of AnalysisJun 27, 2022 B108406
H2217126H2217126Certificate of AnalysisJun 27, 2022 B108406
F2229440F2229440Certificate of AnalysisJun 17, 2022 B108406
F2229438F2229438Certificate of AnalysisJun 17, 2022 B108406
F2229436F2229436Certificate of AnalysisJun 17, 2022 B108406
B2217231B2217231Certificate of AnalysisDec 20, 2021 B108406
B2217224B2217224Certificate of AnalysisDec 20, 2021 B108406
Chemical and Physical Properties
Sensitivitymoisture sensitive
x_boil_point_char1860 °C
x_melt_point_char450°C
Molecular Weight69.630 g/mol
XLogP3
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count3
Rotatable Bond Count0
Exact Mass70.0034 Da
Monoisotopic Mass70.0034 Da
Topological Polar Surface Area43.400 Ų
Heavy Atom Count5
Formal Charge0
Complexity34.200
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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