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ChemicalBook > Product Catalog >Inorganic chemistry >Inorganic salts >Borides, borates and borate >Boron oxide

Boron oxide

Boron oxide Structure
CAS No.
1303-86-2
Chemical Name:
Boron oxide
Synonyms
B2O3;BORIC ANHYDRIDE;BORON TRIOXIDE;BORIC OXIDE;B-O;Boria;Boron anhydride;Boron sesquioxide;boricacid(hbo2),anhydride;BORON OXIDE
CBNumber:
CB1264526
Molecular Formula:
B2O3
Molecular Weight:
69.62
MOL File:
1303-86-2.mol
MSDS File:
SDS
Modify Date:
2024/6/18 13:26:42
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Boron oxide Properties

Melting point 450 °C(lit.)
Boiling point 1860 °C
Density 2.46 g/mL at 25 °C(lit.)
vapor density >1 (vs air)
vapor pressure 1Pa
Flash point 1860°C
storage temp. Inert atmosphere,Room Temperature
solubility 36g/l
form pellets
Specific Gravity 2.46 +/- 0.01
color White
Odor Odorless
PH 4 (10g/l, H2O, 25℃)
Water Solubility 36 g/L (25 ºC)
Sensitive Hygroscopic
Merck 14,1337
Exposure limits ACGIH: TWA 10 mg/m3
OSHA: TWA 15 mg/m3
NIOSH: IDLH 2000 mg/m3; TWA 10 mg/m3
Stability Stable. Moisture sensitive. Incompatible with water.
InChIKey JKWMSGQKBLHBQQ-UHFFFAOYSA-N
CAS DataBase Reference 1303-86-2(CAS DataBase Reference)
NIST Chemistry Reference Diboron trioxide(1303-86-2)
EPA Substance Registry System Boric oxide (1303-86-2)

SAFETY

Risk and Safety Statements

Symbol(GHS) 
GHS08
Signal word  Danger
Hazard statements  H360D
Precautionary statements  P201-P202-P280-P308+P313-P405-P501
Hazard Codes  Xi,T
Risk Statements  36/37/38-61-60
Safety Statements  26-37/39-45-53
OEB B
OEL TWA: 10 mg/m3
WGK Germany  1
RTECS  ED7900000
F  3-10
TSCA  Yes
HS Code  28100010
Toxicity LD50 orally in Rabbit: 3150 mg/kg
IDLA 2,000 mg/m3
NFPA 704
1
0 1

Boron oxide price More Price(21)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich(India) 339075 Boric anhydride 99.98% trace metals basis 1303-86-2 100G ₹5802.2 2022-06-14 Buy
Sigma-Aldrich(India) 339075 Boric anhydride 99.98% trace metals basis 1303-86-2 500G ₹20848.95 2022-06-14 Buy
Sigma-Aldrich(India) 15678 Boric anhydride puriss. p.a., ≥98% (T) 1303-86-2 50G ₹3344.93 2022-06-14 Buy
Sigma-Aldrich(India) 202851 Boric anhydride 99.999% trace metals basis 1303-86-2 5G ₹4957.85 2022-06-14 Buy
Sigma-Aldrich(India) 15678 Boric anhydride puriss. p.a., ≥98% (T) 1303-86-2 250G ₹7155.33 2022-06-14 Buy
Product number Packaging Price Buy
339075 100G ₹5802.2 Buy
339075 500G ₹20848.95 Buy
15678 50G ₹3344.93 Buy
202851 5G ₹4957.85 Buy
15678 250G ₹7155.33 Buy

Boron oxide Chemical Properties,Uses,Production

Chemical Properties

Boron oxide is a noncombustible, colorless, semitransparent lumps or hard, white, odorless crystals, with slightly bitter taste.
Boron oxide

Physical properties

Colorless glassy solid or vitreous crystal; hexagonal crystal system; slightly bitter taste; hygroscopic; density 2.55 g/cm3; melts at 450°C; vaporizes at 1,500°C; slightly soluble in cold water (3.3%), soluble in alcohol and boiling water (20%).

Uses

Boron oxide was used as the intermediate glass layer at a bonding temperature of 450°C. In preparation of fluxes; component of enamels and glass; catalyst in organic reaction.
In metallurgy; in analysis of silicates to determine SiO2 and alkalies; in blowpipe analysis.

Production Methods

Boric oxide is produced by thermal fusion of boric acid, forming a clear transparent glass-like solid that is subsequently ground into white vitreous granules. It is used principally in the manufacture of glass and vitreous products.

Preparation

Boric oxide is produced by treating borax with sulfuric acid in a fusion furnace. At temperatures above 750°C, the molten boric acid layer separates out from sodium sulfate. It then is decanted, cooled, and obtained in 96-97% purity. Boric acid above 99% purity may be obtained by fusing granular material.
Boric oxide may be prepared by heating boric acid.
2B(OH)3 → B2O3 + 3H2O

General Description

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.

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.

Hazard

Eye and upper respiratory tract irritant.

Health Hazard

Boron oxide is an eye and respiratory irritant. In 113 workers exposed to boron oxide and boric acid dusts, there were statistically significant increases in symptoms of eye irrita- tion; dryness of the mouth, nose, and throat; sore throat; and productive cough compared with controls. The mean exposure level was 4.1mg/m3 , with a range of 1.2–8.5mg/m3 . Exposures may occasionally have exceeded 10 mg/m3 . Because of mixed exposures, the study does not indicate whether boron oxide or boric acid dust is more important in causing symp- toms, nor does it indicate the minimum duration of exposure necessary to produce symptoms.
Excessive absorption of boron oxide may lead to cardiovascular collapse, alterations in temperature regulation, and coma.

Potential Exposure

Boron oxide is used in glass manufacture and the production of other boron compounds. It is used in fluxes, enamels, drying agents, and as a catalyst.

Shipping

UN3077 Environmentally hazardous substances, solid, n.o.s., Hazard class: 9; Labels: 9—Miscellaneous hazardous material, Technical Name Required.

Incompatibilities

Incompatible with bromine pentafluoride, calcium oxide. Reacts slowly with water, forming boric acid. Reacts exothermically with alkaline material and 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.

Boron oxide Preparation Products And Raw materials

Raw materials

Sodium tetraborate decahydrate METABORIC ACID Orthoboric acid TETRABORIC ACID

Preparation Products

Boron trifluoride bomn，amorphous Linalool ALUMINUM BORATE GALLIUM PHOSPHIDE
Cyclohexene oxide
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Boron oxide Suppliers

Global( 382)Suppliers
Supplier Tel Country ProdList Advantage Inquiry
Yogi Dye Chem Industries +91-9821098577 +91-9821098577 Mumbai, India 124 58 Inquiry
PERFECT CHEMICAL +91-9820465461 +91-9820465461 Mumbai, India 391 58 Inquiry
Otto Chemie Pvt Ltd +91-2222070099 +91-2266382599 Maharashtra, India 429 58 Inquiry
Kronox Lab Sciences Pvt Ltd +91-9313231074 +91-9313231074 Gujarat, India 240 58 Inquiry
CLEARSYNTH LABS LTD. +91-22-45045900 Hyderabad, India 6351 58 Inquiry
Scientific OEM +91-22- 2343 7546 / 2341 3094 New Delhi, India 1996 38 Inquiry
ALPHA CHEMIKA +91-22-22061123 +91-22-66382501 Mumbai, India 1681 43 Inquiry
Otto Chemie Pvt. Ltd. +91 9820041841 Mumbai, India 5873 58 Inquiry
LOBA CHEMIE PVT.LTD. 91-22-6663 6699 Mumbai, India 3077 58 Inquiry
Central Drug House(P) Ltd. 91-11-49404040 New Delhi, India 6160 58 Inquiry
Supplier Advantage
Yogi Dye Chem Industries 58
PERFECT CHEMICAL 58
Otto Chemie Pvt Ltd 58
Kronox Lab Sciences Pvt Ltd 58
CLEARSYNTH LABS LTD. 58
Scientific OEM 38
ALPHA CHEMIKA 43
Otto Chemie Pvt. Ltd. 58
LOBA CHEMIE PVT.LTD. 58
Central Drug House(P) Ltd. 58

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boricoxide(b2o3) Boron oxide (B2O3) BORON OXIDE BORON (III) TRI-OXIDE BORIC ACID-ANHYDRIDE BORIC ACID, ANHYDROUS DI-BORON TRIOXIDE boronoxide(b2o3) boronsesquioxide caswellno.109b Fused boric acid fusedboricacid oxydedebore BORON OXIDE, PELLETS, 2-2.5CM DIAM., 99. 99+% BORON TRIOXIDE GRANULATED BORON OXIDE, 99.98% BORON OXIDE 99% BORON OXIDE, 99.999% Di-BoronTrioxide(BoricOxide) BORON TRIOXIDE GR Boricanhydride=Trioxydedebore Boron oxide, Puratronic, 99.999% (metals basis) Boron oxide, Puratronic , (H{2}O 200ppm), 99.999% (metals basis) Boron oxide, Puratronic (metals basis) boron oxide, puratronic , (h 200ppm) 1,3-Dibora-2,4,5-trioxabicyclo[1.1.1]pentane Boron oxide/99.99% Boric anhydride pellets Boron Oxide 99.9% Boric anhydride powder Boron oxide, -40 Mesh, 99% 1KG Boron oxide, Puratronic, (H2O 200ppm), 99.999% (metals basis) Boron oxide, 98%, -40 Mesh DI-BORON TRIOXIDE FOR SILICATE ANALYSIS DI-BORON TRIOXIDE 99.9995 SUPRAPUR BOLETH human cell line Boric anhydride 99.98% trace metals basis Boric anhydride puriss. p.a., >=98% (T) Boric anhydride Vetec(TM) reagent grade, 98% Boric anhydride, 99.999% (Metals basis) Boric trioxide Boron oxide, -40 mesh, 99% Boric Anhydride (Boron Trioxide B2O3) granular Boronoxide(99.6%-B) Boronoxide(99.9+%-B) boron oxide, puratronic BORICANHYDRIDE,PURIFIED Boron oxide, Puratronic(R), 99.999% (metals basis) Boron oxide, Puratronic(R), (H2O 200ppm), 99.999% (metals basis) Boron oxide, 99.98% (metals basis) Boron oxide, 97.5% min, typically 98.5% Boron oxide, 99.999% (metals basis) Boron oxide cyl. (H2O 200ppm): 99,9995%: 75mm: 210g/cyl. Boron oxide cyl. (H2O 225+/-25 ppm): dia 2": weight 55g: 99.9995% Boron oxide: (H2O 200ppm): 99,9995%: 100mm dia.: 200g/cyl. Boron oxide, Puratronic 200ppm 99.9995% Boron oxide, Puratronic 400ppm 99.9995% Boron oxide, Puratronic, 99.9995% (metals basis)