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10043-11-5 Usage

Physical properties

White powder, hexagonal graphite-like form or cubic crystal; cubic form similar to diamond in its crystal structure, and reverts to graphite form when heated above 1,700°C; density 2.18 g/cm3; melts at 2,975°C (under nitrogen pressure); sublimes at 2,500°C at atmospheric pressure; insoluble in water and acid; attacked by hot alkalies and fused alkali carbonates; not wetted by most molten metals or glasses.

Chemical Properties

white powder(s), 1μm or less 99.5% pure; hexagonal, most common form: a=0.2504 nm, c=0.6661nm; fcc: a=0.3615nm; hardness: hexagonal like graphite,?cub approaches that of diamond; band gap ~7.5 eV at 300K; dielectric 7.1; used in furnace insulation and in crucibles for melting aluminum, boron, iron, and silicon, also as sputtering target for dielectrics, diffusion masks, passivation layers [KIR81] [HAW93] [MER06] [CER91]

Uses

Boron nitride is a material in which the extra electron of nitrogen (with respect to carbon) enables it to form structures that are isoelectronic with carbon allotropes. Also used in manufacture of alloys; in semiconductors, nuclear reactors, lubricants.

Description

Boron nitride is a material in which the extra electron of nitrogen (with respect to carbon) enables it to form structures that are isoelectronic with carbon allotropes.

Industrial uses

Boron nitride (BN) has many potential commercial applications. It is a white, fluffy powder with a greasy feel. It is used for heat-resistant parts by molding and pressing the powder without a binder to a specific gravity of 2.1 to 2.25. BN may be prepared in a variety of ways, for example, by the reaction of boron oxide with ammonia, alkali cyanides, and ammonium chloride, or of boron halides and ammonia. The usually high chemical and thermal stability, combined with the high electrical resistance of BN, suggests numerous uses for this compound in the field of high-temperature technology. BN can be hot-pressed into molds and worked into desired shapes. BN powders can be used as mold-release agents, high-temperature lubricants, and additives in oils, rubbers, and epoxies to improve thermal conductance of dielectric compounds. Powders also are used in metal- and ceramicmatrix composites (MMC and CMC) to improve thermal shock and to modify wetting characteristics.The platy habit of the particles and the fact that boron nitride is not wet by glass favors use of the powder as a mold wash, e.g., in the fabrication of high-tension insulators. It is also useful as thermal insulation in induction heating. A cubic form of boron nitride (Borazon) similar to diamond in hardness and structure has been synthesized by the high-temperature, high-pressure process for making synthetic diamonds. Any uses it may find as a substitute for diamonds will depend on its greatly superior oxidation resistance.

Definition

boron nitride: A solid, BN, insolublein cold water and slowly decomposedby hot water; r.d. 2.25 (hexagonal);sublimes above 3000°C. Boronnitride is manufactured by heatingboron oxide to 800°C on an acid-solublecarrier, such as calcium phosphate,in the presence of nitrogen orammonia. It is isoelectronic with carbonand, like carbon, it has a veryhard cubic form (borazon) and asofter hexagonal form; unlikegraphite this is a nonconductor. It isused in the electrical industrieswhere its high thermal conductivityand high resistance are of especialvalue.

Uses

boron nitride is a synthetically manufactured white, talc-like powder that can reflect light, giving a product a sparkle effect. It is primarily used in color cosmetics to provide subtle shimmer; however, it can also be found in skin care formulations for enhancing product smoothness and slip.

Production Methods

In tonnage production, acetaldehyde may be manufactured by: 1. The direct oxidation of ethylene, requiring a catalytic solution of copper chloride plus small quantities of palladium chloride Cl2Pd. 2. The oxidation of ethyl alcohol C2H6O with sodium dichromate Cr2Na2O7, and 3. The dry distillation of calcium acetate C4H6CaO4 with calcium formate C2H2CaO4.

Preparation

Boron nitride is prepared by heating boric oxide with ammonia: B2O3 + 2NH3 → 2BN + 3H2O Alternatively, the compound can be prepared by heating boric oxide or boric acid with ammonium chloride or an alkali metal cyanide. Purified product can be obtained by high temperature reaction of boron halide with ammonia: BCl3 + NH3 → BN + 3HCl Boron nitride can also be made from the elements by heating boron and nitrogen at red heat.
InChI:InChI=1/BN/c1-2

10043-11-5 Well-known Company Product Price

Brand (Code)Product description CAS number Packaging Price Detail
Alfa Aesar (45912)  Boron Nitride Rod;Diameter (mm), 12.7;Length (mm), 300    10043-11-5 1each 3084.0CNY Detail
Alfa Aesar (45912)  Boron Nitride Rod;Diameter (mm), 12.7;Length (mm), 300    10043-11-5 1each 3780.0CNY Detail
Alfa Aesar (45850)  Boron Nitride Rod;Diameter (mm), 6.4;Length (mm), 300    10043-11-5 1each 2503.0CNY Detail
Alfa Aesar (45850)  Boron Nitride Rod;Diameter (mm), 6.4;Length (mm), 300    10043-11-5 1each 2897.0CNY Detail
Alfa Aesar (45721)  Boron Nitride Bar;Length (mm), 300;Width (mm), 12.7;Height (mm), 12.7    10043-11-5 1pc 3920.0CNY Detail
Alfa Aesar (40608)  Boron nitride    10043-11-5 2g 1213.0CNY Detail
Alfa Aesar (40608)  Boron nitride    10043-11-5 10g 3612.0CNY Detail
Alfa Aesar (40607)  Boron nitride    10043-11-5 2g 1343.0CNY Detail
Alfa Aesar (40607)  Boron nitride    10043-11-5 10g 5925.0CNY Detail
Alfa Aesar (11078)  Boron nitride, 99.5% (metals basis)    10043-11-5 50g 848.0CNY Detail
Alfa Aesar (11078)  Boron nitride, 99.5% (metals basis)    10043-11-5 250g 1979.0CNY Detail
Alfa Aesar (44839)  Boron nitride, 99.5% (metals basis)    10043-11-5 1pc 3258.0CNY Detail

10043-11-5SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017

1.Identification

1.1 GHS Product identifier

Product name boron nitride

1.2 Other means of identification

Product number -
Other names wurzin

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only. Fillers,Processing aids, not otherwise listed
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:10043-11-5 SDS

10043-11-5Synthetic route

ammonia
7664-41-7

ammonia

boric acid
11113-50-1

boric acid

boron nitride
10043-11-5

boron nitride

Conditions
ConditionsYield
With multi-walled carbon nanotubes In solid byproducts: CO, H2, H2O; mixt. of multi-walled carbon nanotubes and H3BO3 taken in quartz tube, NH3 gas passed through with 10 sccm flow rate at 200 °C 2 h, temp.slowly raised to 1000 °C for 3 h;99%
With pyrographite; iron In neat (no solvent) byproducts: CO, H2, H2O; mixt. of activated carbon, H3BO3 and ferric nitrate (mole ratio of 3:1:0.1) taken in quartz tube, dried in oven at 60 °C 6 h, NH3 gas passed through with 10 sccm flow rate, heating at 1300 °C for 4 h;
byproducts: H2O; synthesis of BN coating on the surfaces of carbon nanotubes and nanofibers around 1150°C using infiltration of nanotubes with boric acid and nitridation in ammonia;
2,4,6-triamino-s-triazine
108-78-1

2,4,6-triamino-s-triazine

boric acid
11113-50-1

boric acid

boron nitride
10043-11-5

boron nitride

Conditions
ConditionsYield
over 600°C in N2 atmosphere;90%
Ca3N2, hexagonal High Pressure; over 100kg/cm2, in N2 stream, 1700-2000°C, 5-9 min; washing with water;80%
magnesium nitride High Pressure; over 100kg/cm2, in N2 stream, 1700-2000°C, 5-9 min; washing with water;80%
calcium hexaboride

calcium hexaboride

ammonia
7664-41-7

ammonia

boron nitride
10043-11-5

boron nitride

Conditions
ConditionsYield
With Fe2O3 In neat (no solvent, solid phase) mixt. CaB6 and Fe2O3 was heated to 750°C for 10 min under Ar atm., heated to 1150°C at 6°C/min keeping for 6 h in NH3 atm.; react. mixt. was cooled to room temp., product was washe with HCl, filtered, washed with water and dried in vacuo at 80°C for 12 h;81.4%
diborane
19287-45-7

diborane

A

boron nitride
10043-11-5

boron nitride

B

ammonia borane

ammonia borane

C

boron imide

boron imide

Conditions
ConditionsYield
With NH3 byproducts: H2; at 190°C, NH3:B2H6=9:1;A 9%
B n/a
C 80%
boric acid
11113-50-1

boric acid

urea
57-13-6

urea

boron nitride
10043-11-5

boron nitride

Conditions
ConditionsYield
Ca3N2, hexagonal High Pressure; over 100kg/cm2, in N2 stream, 1700-2000°C, 5-9 min; washing with water;80%
magnesium nitride High Pressure; over 100kg/cm2, in N2 stream, 1700-2000°C, 5-9 min; washing with water;80%
With ammonia heating at 900°C for 2-6 h under NH3 flow;
boric acid
11113-50-1

boric acid

boron nitride
10043-11-5

boron nitride

Conditions
ConditionsYield
Ca3N2, hexagonal High Pressure; over 100kg/cm2, in N2 stream, 1700-2000°C, 5-9 min; washing with water;80%
magnesium nitride High Pressure; over 100kg/cm2, in N2 stream, 1700-2000°C, 5-9 min; washing with water;80%
500-900°C in NH3 stream, at 1650°C in N2 or NH3 stream;
ammonia
7664-41-7

ammonia

boron trichloride
10294-34-5

boron trichloride

boron nitride
10043-11-5

boron nitride

Conditions
ConditionsYield
excess of NH3 at ambient temp. in N2 or H2 atmosphere; heating in H2 at 1200°C; 1000°C in H2 stream or in vac.; or at 2000°C in N2;80%
With hydrogen In gaseous matrix r. f. thermal plasma chemical vapour deposition (Ar carrier gas, Mo or Si substrate, substrate temp. 430-1100°C, deposition time 5 -10 min); secondary electron microscopy, X-ray diffraction;
BCl3 + NH3 flow (P(BCl3)/P(NH3) = 0.5) passed on support heated at 1323 K (3.5-4.5 min); BCl3 flow stopped; kept in Ar + 7% H2 atm (NH3 flow reduced by 1/2) for 30 min; total flow rate reduced; cooled to room temp.; XRD;
poly(2-vinylpentaborane)
78837-91-9

poly(2-vinylpentaborane)

boron nitride
10043-11-5

boron nitride

Conditions
ConditionsYield
With ammonia In not given byproducts: CH4, H2; slowly heating (2 °C/min) of B5H8CHCH2 from 25 to 350 °C under a flow of NH3 (100 mL/min), heating (10 °C/min) to 1000 °C, temp. maintained at 1000 ° C for 2 h;; elem. anal., the largely amorphous product changes at 1450 °C to crystalline BN;;72.2%
ammonium chloride

ammonium chloride

boric acid
11113-50-1

boric acid

boron nitride
10043-11-5

boron nitride

Conditions
ConditionsYield
In melt 300-1000°C, 1 mole dicyandiamide, 2 mole NH4Cl, 2-4 mole H3BO3;65%
diborane
19287-45-7

diborane

A

boron nitride
10043-11-5

boron nitride

B

boron imide

boron imide

Conditions
ConditionsYield
With NH3 byproducts: H2; at 400°C, NH3:B2H6=9:1;A 30%
B 65%
sodium tetrahydroborate
16940-66-2

sodium tetrahydroborate

urea
57-13-6

urea

boron nitride
10043-11-5

boron nitride

Conditions
ConditionsYield
In neat (no solvent) byproducts: NaCN, CO2, NH3; High Pressure; mixing of NaBH4 and CO(NH2)2, placing into stainless steel autoclave, sealing and heating at rate of 20°C/min in furnace to 550°C,heating at this temp. for 10 h, natural cooling to ambient temp.; washing with EtOH, dilute HCl and H2O several times, drying at 60°C for 10 h;65%
B10H12(NH2CH2CH2NH2)2

B10H12(NH2CH2CH2NH2)2

boron nitride
10043-11-5

boron nitride

Conditions
ConditionsYield
With NH3 In neat (no solvent) pyrolysis under NH3 to 1000 °C; detn. by elem. anal.;62.4%
borazine
6569-51-3

borazine

boron nitride
10043-11-5

boron nitride

Conditions
ConditionsYield
In neat (no solvent) pyrolysis under pressure (100 MPa) at temperatures between 250°C and 700°C (N2), elem.anal.;60%
In neat (no solvent) High Pressure; borazine sealed under N2 in a gold capsule, pyrolyzed at 250-700°C, 25-100MPa, heating rate 10°C/min;
In neat (no solvent) preparation of BN layers by induction heating of borazol;
In neat (no solvent, gas phase) byproducts: H2; deposition on varius substrates;
N2-carrying gas, chemical vapor deposition (graphite substrate, 1300-1800°C, 100-10000 Pa); detd. by IR spectroscopy;
B-triamino N-triphenyl borazine
42728-35-8

B-triamino N-triphenyl borazine

A

boron nitride
10043-11-5

boron nitride

B

aniline
62-53-3

aniline

Conditions
ConditionsYield
at 400°C for 2 h;A 50%
B n/a
at 260-300°C in high vac. for 18 h;
boron tribromide
10294-33-4

boron tribromide

A

boron

boron

B

boron trioxide

boron trioxide

C

boron nitride
10043-11-5

boron nitride

boron

boron

E

boric acid
11113-50-1

boric acid

Conditions
ConditionsYield
With H2; N2 In neat (no solvent) Electric Arc; pulse heating (plasma, puls repitition rate 5-12,5 Hz, N2 flow 0.2 - 1.65 l/min, H2 flow 1.13 - 3.5 l/min9; further products; X-ray diffraction;A n/a
B n/a
C 50%
D n/a
E n/a
boron

boron

ammonia
7664-41-7

ammonia

boron nitride
10043-11-5

boron nitride

Conditions
ConditionsYield
With MgO In neat (no solvent) 1:1 mixt. of B and MgO heated to 1300 °C using RF inducting furnace, vapour argon-transported in to reaction chamber with temp. ca. 1100 °C, NH3 flow introduced; detd. by XRD;40%
With magnesium oxide In neat (no solvent) byproducts: Mg; 1:1 molar mixt. of B and MgO reacted at 1300 °C to form B2O2 and Mg vapor, Ar-transported into react. chamber kept at 1100 °C, NH3added, at 1100 °C BN produced; Mn and Cr impurities from MgO trapped during BN growth;
nickel boride In solid B and NiB/Al2O3 mixed by ball-milling 8 h, placed in alumina tube, heated in flowing argon at 1000-1500 °C, NH3 introduced at rate of 80 sccm 2 h, cooled to room temp.;
boron trifluoride
7637-07-2

boron trifluoride

boron trichloride
10294-34-5

boron trichloride

A

boron

boron

B

boron nitride
10043-11-5

boron nitride

C

magnesium chloride
7786-30-3

magnesium chloride

Conditions
ConditionsYield
700-1000°C; diluterd with N2; washing with HCl at 1000°C;A n/a
B 34%
C n/a
boron trioxide

boron trioxide

sodium amide

sodium amide

boron nitride
10043-11-5

boron nitride

Conditions
ConditionsYield
byproducts: NH3, NaOH; mol ratio of B2O3:NaNH2 = 1:3; heating; reactn. starts at 210°C;;29.9%
byproducts: NH3, NaOH; mol ratio of B2O3:NaNH2 = 1:3; heating; reactn. starts at 210°C;;29.9%
byproducts: NH3, NaOH; mol ratio of B2O3:NaNH2 = 1:3; at 165°C in the presence of large amts. of NaOH;
byproducts: NH3, NaOH; mol ratio of B2O3:NaNH2 = 1:3; at 165°C in the presence of large amts. of NaOH;
2,4,6-triazidoborazine
21093-86-7

2,4,6-triazidoborazine

boron nitride
10043-11-5

boron nitride

Conditions
ConditionsYield
In neat (no solvent) heating in Pt-crucible inside quartz tube (N2-stream, 1200.°C, 8 h); elem. anal.;15%
aluminum oxide
1333-84-2, 1344-28-1

aluminum oxide

aluminium diboride

aluminium diboride

nitrogen
7727-37-9

nitrogen

aluminium
7429-90-5

aluminium

A

boron nitride
10043-11-5

boron nitride

B

aluminium nitride

aluminium nitride

C

FeB49

FeB49

D

2Al2O3*AlN

2Al2O3*AlN

Conditions
ConditionsYield
With Fe impurity In neat (no solvent) AlB2 (contg. Al, Fe and Al2O3 impurities) powder pressed uniaxially at 60 MPa; nitrided with N2 (8 atm) at 1900°C for 1 h; detd. by X-ray diffraction; composite contg. AlN, BN, FeB49 (trace) and Al5O6N (trace) obtained;A n/a
B n/a
C 1%
D 1%
With Fe impurity In neat (no solvent) AlB2 (contg. Al, Fe and Al2O3 impurities) powder pressed uniaxially at 60 MPa; nitrided with N2 (8 atm) at 1600°C for 1 h; detd. by X-ray diffraction; composite contg. AlN, BN, FeB49 and Al5O6N (trace) obtained;A n/a
B n/a
C n/a
D 1%
aluminum oxide
1333-84-2, 1344-28-1

aluminum oxide

aluminium diboride

aluminium diboride

nitrogen
7727-37-9

nitrogen

aluminium
7429-90-5

aluminium

A

boron nitride
10043-11-5

boron nitride

B

aluminium nitride

aluminium nitride

C

2Al2O3*AlN

2Al2O3*AlN

D

Al1.67B22

Al1.67B22

Conditions
ConditionsYield
In neat (no solvent) AlB2 (contg. Al and Al2O3 impurities) powder pressed uniaxially at 60 MPa; nitrided with N2 (8 atm) at 2000°C for 1 h or at 1600°Cfor 5 h and then at 2000°C for 1 h; detd. by X-ray diffraction; composite contg. AlN, BN, Al1.67B22 (trace) and Al5O6N (trace) obtained;A n/a
B n/a
C 1%
D 1%
aluminum oxide
1333-84-2, 1344-28-1

aluminum oxide

aluminium diboride

aluminium diboride

nitrogen
7727-37-9

nitrogen

aluminium
7429-90-5

aluminium

A

boron nitride
10043-11-5

boron nitride

B

aluminium nitride

aluminium nitride

C

2Al2O3*AlN

2Al2O3*AlN

Conditions
ConditionsYield
In neat (no solvent) AlB2 (contg. Al and Al2O3 impurities) powder pressed uniaxially at 60 MPa; nitrided with N2 (8 atm) at 1600°C for 5 h and at 1900°C for 1 h; detd. by X-ray diffraction; composite contg. AlN, BN and Al5O6N (trace) obtained;A n/a
B n/a
C 1%
borax

borax

magnesium
7439-95-4

magnesium

A

boron

boron

B

boron nitride
10043-11-5

boron nitride

Conditions
ConditionsYield
In solid Reaction at higher temperatures and with glowing effects. Formation of various Mg compounds.;
In neat (no solvent, solid phase) Reaction at higher temperatures and with glowing effects. Formation of various Mg compounds.;
boron trioxide

boron trioxide

A

boron

boron

B

boron nitride
10043-11-5

boron nitride

Conditions
ConditionsYield
With sodium byproducts: O2;
With Na byproducts: O2;
boron trioxide

boron trioxide

boron nitride
10043-11-5

boron nitride

Conditions
ConditionsYield
With ammonia byproducts: H2O; formatin of BN on the surface by heating;
With potassium cyanide by glowing;
With ammonia In neat (no solvent) reaction at 600°C;;
boron trioxide

boron trioxide

nitrogen
7727-37-9

nitrogen

boron nitride
10043-11-5

boron nitride

Conditions
ConditionsYield
With pyrographite In gaseous matrix byproducts: B4C; heating (1573-1773 K, 8 h, N2 or N2/H2), phase composition nad microstructure depending on temperature, time, starting B/C ratio, and gas composition;
With pyrographite In gas laser ablation of B2O3 in the presence of graphite in atmosphere of N2 (He carrier gas) in a pulsed supersonic jet; MS;
chemically vapor deposition on carbon nanotubes under flow of N2 at 1500°C; detn. by HRTEM;
boron trioxide

boron trioxide

potassium
7440-09-7

potassium

A

boron

boron

B

boron nitride
10043-11-5

boron nitride

Conditions
ConditionsYield
byproducts: O2;
byproducts: O2;
boron trioxide

boron trioxide

calcium cyanamide
156-62-7

calcium cyanamide

boron nitride
10043-11-5

boron nitride

Conditions
ConditionsYield
by glowing;
boron trioxide

boron trioxide

sodium amide

sodium amide

boron nitride
10043-11-5

boron nitride

Conditions
ConditionsYield
byproducts: sodium borate; small amounts of BN are obtained;;
boron trioxide

boron trioxide

pyrographite
7440-44-0

pyrographite

boron nitride
10043-11-5

boron nitride

Conditions
ConditionsYield
In neat (no solvent) reaction of mixture in N2 atmosphere;;
byproducts: CO; in N2 under pressure;
With ammonia by heating;
boron nitride
10043-11-5

boron nitride

strontium

strontium

strontium chloride

strontium chloride

A

Sr4 oxy-chloride

Sr4 oxy-chloride

B

Sr2BN2Cl

Sr2BN2Cl

Conditions
ConditionsYield
In neat (no solvent) heating (1200°C, 4 d, 1000°C, 4 d), cooling to room temp. (10 h);A n/a
B 80%
boron nitride
10043-11-5

boron nitride

graphite

graphite

calcium
7440-70-2

calcium

calcium bromide
7789-41-5

calcium bromide

3Ca(2+)*2Br(1-)*CBN(4-)=Ca3Br2CBN

3Ca(2+)*2Br(1-)*CBN(4-)=Ca3Br2CBN

Conditions
ConditionsYield
metal, halogenide, boron nitride and graphite are placed in niobium ampoules, heated at 950°C for 12 h, tempered at 800°C for 3 d;70%
boron nitride
10043-11-5

boron nitride

graphite

graphite

strontium

strontium

strontium chloride

strontium chloride

3Sr(2+)*2Cl(1-)*CBN(4-)=Sr3Cl2CBN

3Sr(2+)*2Cl(1-)*CBN(4-)=Sr3Cl2CBN

Conditions
ConditionsYield
metal, halogenide, boron nitride and graphite are placed in niobium ampoules, heated at 950°C for 12 h, tempered at 800°C for 3 d;70%
boron nitride
10043-11-5

boron nitride

calcium
7440-70-2

calcium

calcium chloride

calcium chloride

Ca2BN2Cl

Ca2BN2Cl

Conditions
ConditionsYield
In neat (no solvent) heating (1200°C, 4 d, 1000°C, 4 d), cooling to room temp. (10 h);60%
boron nitride
10043-11-5

boron nitride

barium
7440-39-3

barium

barium carbonate

barium carbonate

barium borate cyanide

barium borate cyanide

Conditions
ConditionsYield
With W In neat (no solvent) BN, Ba, W and BaCO3 were filled into a W-crucible under Ar, high-frequency furnace, heating under N2 up to 750 °C in 45 min, keeping at this temp. for 30 min, heating up to 1450 °C in 1 h, keeping at this temp. for 30 min; cooling to 200 °C in 39 h;50%
boron nitride
10043-11-5

boron nitride

iodine
7553-56-2

iodine

fluorine
7782-41-4

fluorine

nitrogen triiodide
13444-85-4

nitrogen triiodide

Conditions
ConditionsYield
In trichlorofluoromethane byproducts: BF3; Sonication; condensing of a mixture of I2, BN and CCl3F into a quartz apparature (passivated with F2), addn. of F2 at -196°C, warming to -30°C for 2 h under shaking, exposur to ultrasonic waves for 5 min at -18°C (explosion danger); warming to -10°C, pumping of CCl3F at -50°C, sublimation at -20°C;30%
boron nitride
10043-11-5

boron nitride

boric acid
11113-50-1

boric acid

Conditions
ConditionsYield
With water after 1 hour reaction with boiling water;1.2%
With H2O after 1 hour reaction with boiling water;1.2%
With hydrogenchloride byproducts: NH4Cl; at 160-200°C in sealed tube;
boron nitride
10043-11-5

boron nitride

potassium carbonate
584-08-7

potassium carbonate

pyrographite
7440-44-0

pyrographite

A

potassium cyanide

potassium cyanide

B

potassium tetraborate

potassium tetraborate

Conditions
ConditionsYield
low red heat; extraction of KCN with alcohol or H2O;
low red heat; extraction of KCN with alcohol or H2O;
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