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Name Borazine
EINECSN/A
CAS No. 6569-51-3
Densityd40 0.824; d457 0.898
PSA36.09000
LogP-2.44530
Solubilityhydrolyzes, evolving boron hydrides [HAW93]
Melting Point-58°
FormulaB3H6 N3
Boiling Point55°C
Molecular Weight80.5007
Flash PointN/A
Transport InformationN/A
AppearanceN/A
SafetyA powerful irritant to skin, eyes, and mucous membranes. May explode spontaneously when stored in the light. Reacts with water to form toxic and flammable boron hydrides. A dangerous fire hazard. When heated to decomposition it emits toxic fumes of NO_x. See also BORON COMPOUNDS.
Risk Codes15-34
Molecular Structure
Hazard SymbolsN/A
SynonymsN/A
Article Data103

Borazine Synthetic route

: 16940-66-2
sodium tetrahydroborate

: 933-18-6
B,B',B''-trichloroborazine

: 6569-51-3
borazine

Conditions

Conditions	Yield
	92.6%
	92.6%
In diethylene glycol	46%

: 16940-66-2
sodium tetrahydroborate

: ammonium sulfate

: 6569-51-3
borazine

Conditions

Conditions	Yield
aluminium trichloride In further solvent(s) (N2), powder of (NH4)2SO4 treated with soln. of NaBH4 in tetraglyme, stirred for 6 h at 140°C catalized by AlCl3;	67%
In further solvent(s) byproducts: Na2SO4, H2; absence of air and moisture; heating in tetraglyme to 135°C (over 1 h), then 1 h at 135°C, continuous distn. off of borazine and H2 at 2-5 Torr; condensation in trap at liquid-N2 temp., fractional low-temp. distn. (collection at -78°C);	59.9%
In further solvent(s) byproducts: Na2SO4, H2; absence of air and moisture; stepwise addn. of solid mixt. of educt into tetraglyme at 135°C, heating to 135°C for 2 h; condensation in trap at liquid-N2 temp., fractional low-temp. distn. (collection at -78°C);	53.8%

: 10043-11-5
ammonia borane complex

: 6569-51-3
borazine

Conditions

Conditions	Yield
In further solvent(s) byproducts: H2; absence of air and moisture; slow addn. of solid H3NBH3 into tetraglymeat 140-160°C (over 3 h), distn. off of H2 and product (2-5 Torr); condensation in trap at liquid-N2 temp., fractional low-temp. distn. (collection at -78°C);	67%
With nickel at 80℃; under 30 Torr; for 6h; Inert atmosphere;	53%
In 1,2-dimethoxyethane

: lithium borohydride

: 933-18-6
B,B',B''-trichloroborazine

: 6569-51-3
borazine

Conditions

Conditions	Yield
	65%
	65%
In dibutyl ether under N2; exclusion of moisture (drybox); B-trichloroborazine was suspended in the dry solvent; soln. of LiBH4 was added to the slurry over 2 h; crude borazine was distilled into a dry-ice condenser; several line transfers; fractional distillation; identified by IR; (1)H-NMR; boiling point;;

: ammonia borane

: 6569-51-3
borazine

Conditions

Conditions	Yield
[Re(NO)(η(2)-H2)Br2(PiPr3)2] In 1,4-dioxane byproducts: H2; at 45°C for 24 h, or at 85°C for 1 h;	65%
chloro(1,5-cyclooctadiene)rhodium(I) dimer In further solvent(s) byproducts: H2; at 45°C for 72 h in tetraglime; NMR;	10%
chloro(1,5-cyclooctadiene)rhodium(I) dimer In diethylene glycol dimethyl ether byproducts: H2; at 45°C for 72 h; NMR;	10%

: 19287-45-7
diborane

: 6569-51-3
borazine

Conditions

Conditions	Yield
With ammonia byproducts: H2; quickly heating at 250-300°C;	47%
With NH3 byproducts: H2; quickly heating at 250-300°C;	47%
With ammonia byproducts: H2; heating at 200°C and 11 atm; 15 min;	41.5%

: B2H5NH2*NH3

: 6569-51-3
borazine

Conditions

Conditions	Yield
heating at 200°C 5 min;	45%
heating at 200°C 5 min;	45%
byproducts: H2; at 200°C 5 min;	>99

: lithium borohydride

: ammonium chloride

: 6569-51-3
borazine

Conditions

Conditions	Yield
	40%
	40%

: 13871-09-5
cyclotriborane

A: BNH1.7

B: 6569-51-3
borazine

Conditions

Conditions	Yield
In solid byproducts: H2; heated in Schlenk vessel up to 470 K; held at this temp. for 6 h before slowly cooled down; monitored by NMR spectroscopy;	A n/a B 40%

: B4H10*4NH3

: 6569-51-3
borazine

Conditions

Conditions	Yield
With ammonia heating at 200°C;	40%
With NH3 heating at 200°C;	40%
at 200°C in sealed tube;
at 200°C in sealed tube;

Borazine Chemical Properties

Borazine ,its CAS register number is 6569-51-3,it's called for 1,3,5,2,4,6-Triazatriborine, hexahydro- ; Borazole ; Borazyne, cyclic trimer ; Hexahydro-s-triazaborine ; s-Triazaborane ; s-Triazatriborine, hexahydro- ; Hexahydro-s-triazaborine ; 1,3,5,2,4,6-triazatriborinane ; CHEBI:33119 ; CID138768 ,and so on.

IUPAC Name: 1,3,5,2,4,6-triazatriborinane
CAS: 6569-51-3
Molecular Formula: B₃H₆N₃
Molecular Weight: 80.5
Molecular structure:
Storage temp.: below 5° C
H bond acceptors: 3
H bond donors: 3
Freely Rotating Bonds: 0
Enthalpy of Vaporization: 29.62 kJ/mol
Boiling Point: 53 °C at 760 mmHg
Vapour Pressure: 259 mmHg at 25°C

Borazine Uses

Borazine (CAS No.6569-51-3) can be used for organic synthesis.

Borazine Production

Borazine (CAS No.6569-51-3) can be synthesized by one-step reaction methods:
1. 3 B₂H₆ + 6 NH₃ → 2 B₃H₆N₃ + 12 H₂
2. 3 LiBH₄ + 3 NH₄Cl → B3H₆N₃ + 3 LiCl + 9 H₂

Borazine (CAS No.6569-51-3) also can be synthesized by two-step reaction method:
3 BCl₃ + 3 NH₄Cl → Cl₃B₃H₃N₃ + 9 HCl
2 Cl₃B₃H₃N₃ + 6 NaBH₄ → 2 B3H₆N₃ + 3 B₂H₆ + 6 NaCl

Borazine Safety Profile

A powerful irritant to skin, eyes, and mucous membranes. May explode spontaneously when stored in the light. Reacts with water to form toxic and flammable boron hydrides. A dangerous fire hazard. When heated to decomposition it emits toxic fumes of NO_x.

Risk Statements: 15-34 (R15:Contact with water liberates extremely flammable gases. R34:Causes burns.)
Safety Statements: 7-23-26-36-43 (S7:Keep container tightly closed. S23:Do not breathe vapour. S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36:Wear suitable protective clothing. S43:In case of fire use ... (there follows the type of fire-fighting equipment to be used.))
RIDADR: 1992
TSCA: No
HazardClass: 3.1
PackingGroup: II

Borazine Specification

Removal in wastewater treatment of Borazine (CAS No.6569-51-3) can be stated as follows:
Total removal:1.85 percent
Total biodegradation:0.09 percent
Total sludge adsorption:1.75 percent
Total to Air:0.00 percent
(using 10000 hr Bio P,A,S)

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Borazine

Borazine Synthetic route

Borazine Chemical Properties

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Borazine Production

Borazine Safety Profile

Borazine Specification

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