5 10.810
B
Boron

Boron , B

Boron is a chemical element with atomic number 5 and the chemical symbol B. Boron is a trivalent nonmetallic element which occurs abundantly in the evaporite ores borax and ulexite. Boron is never found as a free element in nature.

 

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B4-5001-M

B4C 1-3mm Pieces 99.9% Pure

Boron Carbide

B4-5002-M

B4C Pieces 3-6mm 99.5% Pure

Boron Carbide

$0.99/GR
100 GR in stock
Select Qty
B4-5005-M

B2O3 12mm Pieces & smaller 99.9995%

Boron Oxide

B4-5006-M

B Pieces 1-3mm 99.9999% Pure

Boron

B4-5007-M

B2O3 3-10mm Pieces 99.99% Pure

Boron Oxide

B4-5008-M

B 5-30mm (crystalline) Pieces 99.9% Pure

Boron

B4-5009-M

B Pieces 1-3mm 99.9% Pure

Boron

B4-5011-M

B 3-6mm Pieces 99.9% Pure

Boron

B4-10002-P

B2O3 -80 mesh 99.% Pure

Boron Oxide

B4-10005-P

B4C -60 mesh 99.5%

Boron Carbide

B4-10006-P

B4C -325 mesh (typ. =25 microns) 99.5% Pure

Boron carbide

B4-10007-P

B4C 5 microns average or less 99.5% Pure

Boron Carbide

B4-10009-P

BN -80 mesh(hexagonal form) 97.5% Pure

Boron Nitride

B4-10010-P

B2O3 -40 mesh 99.9% Pure

Boron Oxide

B4-10011-P

B2O -200 mesh 99.9% Pure

Boron Oxide

B4-10014-P

B2S3 -200 mesh 99.9% Pure

Boron Sulphide

B4-10015-P

B2O3 ~5 microns 99.9% Pure

Boron Oxide

B4-10016-P

BN Avg. 2.453 micron (hexagonal form) 99.5% Pure

Boron Nitride

B4-10017-P

BN Avg. 4-6 micron (hexagonal form) 99.5% Pure

Boron Nitride

B4-10020-P

B4C 1-7 microns 99.7% Pure

Boron Carbide

B4-10021-P

BN 2-3 microns 99.9% Pure

Boron Nitride

B4-2000-R1

B4C Rod 6mm dia. x 100mm long 99.9% Pure

Boron carbide

B4-2001-R1

B4C Rod 10mm dia. x 100mm long 99.9% Pure

Boron carbide

B4-9000-D

Boron B, Available purities 99.9% & 99.99%

B4-9001-D

Boron Carbide B4C,

Available purities 99.5% & 99.9%

B4-9001-Dx

Boron Carbide-Carbon B4C/C 5 at%,

Available purity 99.5%

B4-9002-D

Boron nitride BN, Available purity 99.5%

More Info
B4-9005-D

Boron-Zinc B-Zn,

Available in various ratios wt% or at%, Purity 99.9%

B4-9006-D

Boron oxide B2O3,

Available purity 99.9%

B4-9007-D

Boron Titanate BTiO3,

Available purity 99.9%

B-ST-1-3-3N
B TRG 25.4mm dia. x 3mm Tk 99.9% PureBoron
$79.20/PCS
1 PCS in stock
Select Qty
B-ST-1-6-3N

B TRG 25.4mm dia. x 6mm Tk 99.9% Pure

Boron

$105.60/PCS
1 PCS in stock
Select Qty
B-ST-2-3-4N

B TRG 50.8mm dia. x 3mm Tk 99.99% Pure

Boron

$343.20/PCS
2 PCS in stock
Select Qty
B4-9000-D1-B

B TRG 76.2mm dia. x 3mm Tk 99.9% Pure

Bonded to 76.2mm x 3mm Tk Cu Backing Plate

Boron

More Info
$706.20/PCS
0 PCS in stock
Select Qty
B4-9000-D4

B TRG 50.8mm dia. x 6.35mm Tk 99.99% Pure

Boron

B4-9000-D8

B TRG 15mm dia. x 1.5mm Tk 99.9% Pure

Boron

B4-9001-D13

B4C TRG 76.2mm dia. x 4mm Tk 99.5% Pure

Boron Carbide

B4-9001-D14

B4C TRG 101.6mm dia. x 6mm Tk 99.5% Pure

Boron Carbide

B4-9001-D15

B4C TRG 25.4mm dia. x 3mm Tk 99.5% Pure

Boron Carbide

B4-9001-D16

B4C TRG 50.8mm dia. x 3mm Tk 99.5% Pure

Boron carbide

B4-9001-D20

B4C TRG 76.2mm dia. x 6.35mm Tk 99.5% Pure

Boron carbide

B4-9001-D3

B4C TRG 101.6mm dia. x 6.35mm Tk 99.5% Pure

Boron Carbide

B4-9002-D1

BN TRG 25.4mm dia. x 6.35mm Tk 99.5% Pure

Boron nitride

B4-9002-D10

BN TRG 50.8mm dia. x 2mm Tk 99.5% Pure

Boron nitride

B4-9002-D13

BN TRG 50.8mm dia. x 3mm Tk 99.9% Pure

Boron nitride

B4-9002-D14

BN TRG 76.2mm dia. x 6.35mm Tk 99.5% Pure

Boron nitride

B4-9002-D2

BN TRG 76.2mm dia. x 3mm Tk 99.5% Pure

Boron Nitride

B4-9002-D3

BN TRG 101.6mm dia. x 6.35mm Tk 99.5% Pure

Boron nitride

B4-9006-D1

B2O3 TRG 50.8mm dia. x 6.35mm Tk 99.9% Pure

Boron oxide

Several allotropes of boron exist; amorphous boron is a brown powder, though crystalline boron is black, hard (9.3 on Mohs' scale), and a weak conductor at room temperature. Elemental boron is used as a dopant in the semiconductor industry, while boron compounds play important roles as light structural materials, nontoxic insecticides and preservatives, and reagents for chemical synthesis.

Boron is an essential plant nutrient, although higher soil concentrations of boron may also be toxic to plants. As an ultratrace element, boron is necessary for the optimal health of rats and presumably other mammals, though its physiological role in animals is poorly understood.

Symbol B
Atomic number 5
No. of naturally occurring isotopes 2
Atomic weight 10.81
Electronic configuration [He] 2s22p1
Ionization energy/kJmol -1 800.5
II 2426.5
III 3658.7
DenSity/gcm-3 (β rhombohedral) 2.35
(α rhombohedral) 2.45
Melting point /°C (β rhombohedral) 2180
Boiling point /°C (β rhombohedral) ~3650
ΔHsub/kJmol-1 570
Electronegativity χ 2
Electrical conductivity
(25°C)/ohm-1 cm-1 l.5x 10-6
Temperature (oC) @Vap. Pressure
10-8 Torr 1278 Sublimes
10-6 Torr 1548 Sublimes
10-4 Torr 1797 Sublimes
Techniques
Electron Beam Excellent
Crucible Graphite & Vitreous Graphite
Coil -
Boat Graphite
Remarks
Material explodes with rapid cooling. Forms carbide with container.