Boron trioxide CAS 1303-86-2 industrial grade purity 99.9%
12 Inquiries
1303-86-2
Industrial Grade
99.9%
QINGDAO SHANGHAI
Chengcheng
25kg/bag
2023-09-11
1-Butanol,Polyvinylpyrrolidone (PVP K-30),Carbonyl dihydrazine,N-VinyPyrrolidone (NVP),Ethylene sulfate (DTD),Dimethyl carbonate(DMC)
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Product Description
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Seller Information
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Inquiry History
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DescriptionBasic Info
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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:
Trader
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Main Products:
1-Butanol,Polyvinylpyrrolidone (PVP K-30),Carbonyl dihydrazine,N-VinyPyrrolidone (NVP),Ethylene sulfate (DTD),Dimethyl carbonate(DMC)
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Location:
15th of Chuangye Building, Guangrao Donying,Shandong Province PRC
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Payment Terms:
D/P,L/C,D/A,TT against B/L draft before shipment,100% TT in advance
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Average lead Time:
7
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Total Annual Revenue:
$5 million-$10 million
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Total Employees:
51-100
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Year of Establishment:
2023
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Inquiry History12 Inquiries
Country Product Purchase Quantity Date Posted 
United States
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India
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Australia
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Malaysia
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1 KG Jun 18, 2025 
Vietnam
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China
氧化硼
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India
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1 20' Fcl Dec 9, 2025
India
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Vietnam
Boron Trioxide sell
25 MT Oct 14, 2025 
New Zealand
HIGH QUALITY BORON OXIDE, BORIC ANHYDRIDE
1 MT Aug 9, 2024 
Thailand
Boron oxide
10 MT Jul 9, 2026 Post an enquiry for this product
