Boronoxide 98-100%
11 Inquiries
1303-86-2
Industrial Grade
98-100%
SHANGHAI
25kg/0.2kg White Kraft Paper Bag
2019-11-04
Boric Acid.
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Product Description
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Seller Information
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Inquiry History
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Description
● Chemical name: Boric oxide
( Formula:B2O3， other name boron oxide, boron trioxide, boric anhydride, anhydrous boric acid, di-boron trioxide )
● M.W:69.62
● Properties: White crystals or powder
● Quality standard: Index name IndexBoric oxide(B2O3) %≥ 98.8Silica(SiO2) %≤ 0.10Alumina(Al2O3) %≤ 0.005Calcium oxide(CaO) %≤ 0.01Iron oxide(Fe2O3) %≤ 0.005Sodium oxide(Na) %≤ 0.02Attached water %≤ 0.60Granularity(60mesh) %≥ 95
● Package: In kraft paper bags with inner plastic bags of 25 kgs net each
● Stock: Sealed and stored in a dry place
● Uses: used as materials for production of boron crystalline and various boricsynthetic chemical, Supplements for glass and ceramics, chemical agent.
Basic Info-
Product Name:
Boron oxide (B2O3)
Other Name:Boron oxide (B2O3);Boric oxide;Boron sesquioxide;Boron trioxide;Fused boric acid;Boric acid (HBO2),anhydride;Boric oxide (B2O3);Boria;Boric anhydride;Diboron trioxide;Boracic anhydride;Boron oxide;Boria (B2O3);Boric acid anhydride;Boron(III) oxide;Boron oxide (BO1.5);B 108406;Boron oxide (B0.67O);12640-42-5;56116-04-2;56145-44-9;56312-91-5;56312-92-6;56312-93-7;56312-94-8;91863-27-3;102967-73-7;144919-64-2;163701-88-0;1858211-82-1;2566446-91-9
CAS No.:1303-86-2
Molecular Formula:B2O3
InChIKeys:JKWMSGQKBLHBQQ-UHFFFAOYSA-N
Molecular Weight:71.63610
Exact Mass:72.01900
EC Number:215-125-8
ICSC Number:0836
DSSTox ID:DTXSID7034387
Color/Form:Colorless, brittle, vitreous, semitransparent lumps or hard, white crystals|Colorless, glassy or hexagonal crystals, hygroscopic|Colorless powder or vitreous crystals
HScode:2810001000
Categories:
Characteristics-
PSA:
43.37000
XLogP3:-1.60300
Appearance:Boron oxide appears as colorless, semi-transparent glassy lumps or hard white odorless crystals. Mp 450°C; bp: 1860°C. Density: 2.46 g cm-3. Moderately soluble in water. Used as an insecticide; as the starting material for the synthesis of other boron compounds; as a fluxing agent in enamels and glasses; and in mixture with 2-6% boron nitride, as a bonding agent in the hot isostatic pressing of boron nitride ceramics.
Density:2.46 g/cm3
Melting Point:450 °C
Boiling Point:1860 °C (approx)
Flash Point:1860ºC
Refractive Index:INDEX OF REFRACTION: 1.61
Water Solubility:H2O: 36 g/L (25 ºC)
Storage Conditions:Store in a cool, dry place. Store in a tightly closed container.
Vapor Pressure:0 mmHg (approx)
Vapor Density:>1 (vs air)
Flammability characteristics:Noncombustible Solid
Odor:Odorless
Taste:Slightly bitter taste
PH:pH = 5.1 at 20 °C 1.0% solution
Experimental Properties:Enthalpy of fusion: 24.56 kJ/mol at 450 °C|Standard enthalpy of formation: -1273.5 kJ/mol (crystal); -843.8 kJ/mol (gas); molar heat capacity at 25 °C: 62.8 J/K mol (crystal); 66.9 J/K mol (gas)|Mohs' hardness: 4; mildly hygroscopic at room temperature; reaction with water is exothermic, -75.94 kJ/mol|Slowly reacts with water to form boric acid|Colorless, vitreous crystals; solubility: in water at 0 °C 1.1 g/100 cu cm, at 100 °C 15.7 g/100 cu cm; sol in acid, alcohol. Index of refraction: 1.485; MP: approx 450 °C; Density: 1.812 at 25 °C at 4 °C /oxide glass/|Heat of vaporization: 390.4 kJ/mol at 1500 K; 431.4 kJ/mol at 298 K; boiling point: 2316 °C (extrapolated); viscosity: 10.60 cP at 350 °C; 4.96 cP at 700 °C; 4.00 at 1000 °C; density: 1.8766 g/mL at 0 °C; 1.844 g/mL at 18-25 °C; 1.81 g/mL at 18-25 °C (well-annealed); 1.648 g/mL at 500 °C (quenched); 1.528 g/mL at 1000 °C (quenched); index of refraction: 1.463 at 14.4 °C; specific heat capacity: 62.969 J/kg K at 298 K; heat of formation: -1252.2 kJ at 298.15 K /Vitreous boric oxide/
Air and Water Reactions:No rapid reaction with air No rapid reaction with water
Reactive Group:Salts, Acidic
Reactivity Profile:BORON OXIDE is non-combustible. Of generally low chemical reactivity. Reacts exothermically but slowly with water to form boric acid, a weak acid. Reacts exothermically with strong bases. May react with strong reducing agents such as metal hydrides, metal alkyls to generate flammable or explosive gases. May react violently on contact with bromine pentafluoride. Corrosive to metals in the presence of air.
Ionization Potential:13.50 eV
Flammable Limits:Noncombustible Solid
Corrosivity:Very corrosive to metals in the presence of oxygen
Hazard IdentificationClassification of the substance or mixture
Reproductive toxicity, Category 1B
GHS label elements, including precautionary statements
Pictogram(s) 
Signal word Danger
Hazard statement(s) none
Precautionary statement(s) Prevention P203 Obtain, read and follow all safety instructions before use.
P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...
Response P318 IF exposed or concerned, get medical advice.
Storage P405 Store locked up.
Disposal P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.
Other hazards which do not result in classification
no data available
Handling and StoragePrecautions for safe handling
Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.
Conditions for safe storage, including any incompatibilities
Dry. Well closed.
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Seller Information
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Business Type:
Manufactory
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Main Products:
Boric Acid.
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Location:
1703 # B Building West Electronic Zone New and High-Tech Industrial Development Zone, Xi'an, China
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Payment Terms:
D/P,L/C
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Average lead Time:
60
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Total Annual Revenue:
Less than $1 million
Xi'an Unique Electronic & Chemical Co., Ltd. is located in Xi’an Qujiang New District. After about twenty years' sustained and steady development, it is not only the largest Hi-Tech enterprise engaging in the production of boron oxide (B2O3) in China but also enjoyed high reputation in worldwide.
Xi'an Unique is a Hi-Tech enterprise integrating the R&D, production and sales of chemical products and it owns advanced production lines for fine chemicals. Xi’an Unique has cooperated with US Borax and Russian Bor Group etc. to supply top-quality products, valuable service, outstanding technology and modernized environmental protection for TFT industry, boron industry, refractory industry, borosilicate glass, ceramics, glaze and other industry to meet the maximum demands for customers. Xi’an Unique holds firmly the concept of “Creating the higher value to our customers”, and has been insisting on integrity, continuous improvement and trying our best. We always give top priority to customers. We believe that the customers’ development is our company’s development and the highest satisfaction of our customer is the ultimate goal of our company.
Our major products include Boron trioxide, Boric Acid. Other product: Borax Anhydrous, Borax Pentahydrate, etc. Unique exported high quality boron oxide (B2O3) to Europe, America, Southeast Asia and other regions, praised by all customers.
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Inquiry History11 Inquiries
Country Product Purchase Quantity Date Posted 
United States
Boronichydride
30000 KG Jun 17, 2024 
South Africa
Boron Oxide
25 MT May 18, 2026 
India
boron oxide,boric anhydrate,diboron trioxide
100 MT May 8, 2026 
Australia
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1 TON Jul 7, 2025 
Malaysia
boron oxide powder
1 KG Jun 18, 2025 
Vietnam
BORIC ACID 99%
10.00 TON Oct 13, 2023
India
boron oxide
1 20' Fcl Dec 9, 2025
India
Boron oxide
21 MT Dec 5, 2025
Vietnam
Boron Trioxide sell
25 MT Oct 14, 2025 
New Zealand
HIGH QUALITY BORON OXIDE, BORIC ANHYDRIDE
1 MT Aug 9, 2024 
China
boron oxide
18 MT Aug 1, 2025 Post an enquiry for this product
