Boron trioxide, GR 99%+

Name: Boron trioxide, GR 99%+
Brand: Vaqora Chemicals
SKU: VQ-001657

About Boron trioxide, GR 99%+

Vaqora Chemicals supplies Boron trioxide in AR grade, an adsorbent registered under CAS number 1303-86-2 at a purity of ≥99%. Its molecular formula is B2O3 and its molecular weight is 69.63 g/mol. The IUPAC name is 2,4,5-trioxa-1,3-diborabicyclo[1.1.1]pentane. Alternative names: Boric anhydride and Boric Oxide.

The material typically appears as white powder or crystal or chunks. Reported physical data include a melting point of 450 °C and a density of 2.46 g/mL at 25 °C. Store sealed in a dry, well-ventilated location away from incompatible materials. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

It is commonly used for column chromatography, adsorption and purification, drying and decolourising and fine chemical synthesis. Typical end-use sectors are academic and industrial research.

Vaqora Chemicals supplies Boron trioxide in 250 g, 1 kg, 5 x 1 kg and 4 x 25 kg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

Column chromatography
Adsorption & purification
Drying & decolourising
Fine chemical synthesis

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Boron trioxide, GR 99%+
Catalogue No.	VQ-001657
CAS Number	1303-86-2
IUPAC name	2,4,5-trioxa-1,3-diborabicyclo[1.1.1]pentane
Molecular formula	B₂O₃
Molecular weight	69.63 g/mol
Exact mass	70.0034
Grade	AR
Purity / assay	≥99%
HSN code	28100010
InChIKey	RPPTVYMVSNHGRG-UHFFFAOYSA-N
SMILES	B12OB(O1)O2
PubChem CID	11073337

Physical properties
Physical form	Crystalline
Appearance	White powder or crystal or chunks
Melting point	450 °C
Density	2.46 g/mL at 25 °C
H-bond donors / acceptors	0 / 3
TPSA	27.7 Å²
Synonyms	Boric anhydride, Boric Oxide, Diboron Trioxide, Boron sesquioxide, Boron Oxydatum, Fused boric acid, Boric oxide (B2O3), Boric acid (HBO2), anhydride, B2O3, Boron oxide, Boron oxide (B2O3), Boron oxide (99.6%-B)

Safety & hazard information (GHS)

Health hazard

Signal word: Danger

Precautionary statements: P203, P280, P318, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Other grades of CAS 1303-86-2

Boric anhydride, granulated, 98%

CAS: 1303-86-2
Formula: B₂O₃
MW: 69.63 g/mol

VQ-015207

Boron oxide nanopowder, APS 40-80 nm, 98%

CAS: 1303-86-2
Formula: B₂O₃
MW: 69.63 g/mol

VQ-017446

Boron trioxide, 99.98%

CAS: 1303-86-2
Formula: B₂O₃
MW: 69.63 g/mol

VQ-001655

Boron trioxide, 99.999%

CAS: 1303-86-2
Formula: B₂O₃
MW: 69.63 g/mol

VQ-001656

Synthesis

Boron trioxide, 99%

CAS: 1303-86-2
Formula: B₂O₃
MW: 69.63 g/mol

VQ-001654

Electronic

Boron trioxide, electronic grade 99.90%

CAS: 1303-86-2
Formula: B₂O₃
MW: 69.63 g/mol

VQ-047101

Frequently asked questions

What is the CAS number of Boron trioxide, GR 99%+?

The CAS Registry Number of Boron trioxide, GR 99%+ is 1303-86-2. It is also known as Boric anhydride, Boric Oxide, Diboron Trioxide.

What is the molecular formula and molecular weight of Boron trioxide, GR 99%+?

Boron trioxide, GR 99%+ has the molecular formula B2O3 and a molecular weight of 69.63 g/mol. Its IUPAC name is 2,4,5-trioxa-1,3-diborabicyclo[1.1.1]pentane.

Which grade and pack sizes of Boron trioxide, GR 99%+ can I order?

We supply Boron trioxide, GR 99%+ in AR (≥99%) grade, in 250 g, 1 kg, 5 x 1 kg, 4 x 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Boron trioxide, GR 99%+?

Yes. Every lot of Boron trioxide, GR 99%+ is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Boron trioxide, GR 99%+ be shipped internationally?

Yes. Boron trioxide, GR 99%+ is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.