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Cas Database

Name	TRIMETHOXYBOROXINE	EINECS	203-016-8
CAS No.	102-24-9	Density	1.216
PSA	55.38000	LogP	-1.05630
Solubility	reacts	Melting Point	10 °C(lit.)
Formula	C3H9 B3 O6	Boiling Point	130 °C(lit.)
Molecular Weight	173.534	Flash Point	14 ºC
Transport Information	UN 2924	Appearance	colorless not quite clear liquid
Safety	Slightly toxic by ingestion. When heated to decomposition it emits toxic fumes of boron.	Risk Codes	R11;R38;R41
Molecular Structure		Hazard Symbols
Synonyms	Boroxin,trimethoxy- (6CI,7CI,8CI,9CI); Boric acid (H3B3O6), trimethyl ester; NSC 56370;TMBX; Trimethoxyboroxin; Trimethoxyboroxine	Article Data	44

TRIMETHOXYBOROXINE Synthetic route

: 124-38-9
carbon dioxide

: 0.95C4H11BO*0.05Na(1+)*0.05BH4(1-)

: 102-24-9
cyclotriboric acid trimethyl ester

Conditions

Conditions	Yield
In tetrahydrofuran at 20℃; for 12h; Schlenk technique; Inert atmosphere;	87%

: 14044-65-6
borane-THF

: 124-38-9
carbon dioxide

: 102-24-9
cyclotriboric acid trimethyl ester

Conditions

Conditions	Yield
With sodium tetrahydroborate In tetrahydrofuran for 12h; Reagent/catalyst; Schlenk technique; Inert atmosphere;	83%

: 13292-87-0
dimethylsulfide borane complex

: 1111-72-4
carbon dioxide

: 102-24-9
cyclotriboric acid trimethyl ester

Conditions

Conditions	Yield
With C27H53BN2P2 at 60℃; under 3800.26 Torr; for 11h; Reagent/catalyst; Inert atmosphere;	80%

: 124-38-9
carbon dioxide

: 13292-87-0
dimethylsulfide borane complex

: 102-24-9
cyclotriboric acid trimethyl ester

Conditions

Conditions	Yield
With C39H45N2(1+)CHO2(1-)BH3O3 In benzene-d6 at 20℃; under 760.051 Torr; for 6h;	67%
With C24H18BO2P at 70℃; under 760.051 Torr; for 1h; Catalytic behavior; Reagent/catalyst; Inert atmosphere;
With N,N,N',N'-tetramethyl-1,8-diaminonaphthalene In benzene-d6 at 80℃; under 760.051 Torr; for 21h; Catalytic behavior; Reagent/catalyst; Temperature; Time; Solvent; Sealed tube;	> 99 %Spectr.

: 121-43-7
Trimethyl borate

: 102-24-9
cyclotriboric acid trimethyl ester

Conditions

Conditions	Yield
With boron trioxide
With boric acid

: 868-81-5
chlorodimethoxyborane

: 102-24-9
cyclotriboric acid trimethyl ester

Conditions

Conditions	Yield
at 250℃;
at 250℃;
250°C, 10 h, in sealed tube;
In neat (no solvent) decompn. on heating or by Lewis-acid catalysis;;

: 121-43-7
Trimethyl borate

B2O3: B2O3

: 102-24-9
cyclotriboric acid trimethyl ester

: 121-43-7
Trimethyl borate

boroxide: boroxide

: 102-24-9
cyclotriboric acid trimethyl ester

: boron trioxide

: 121-43-7
Trimethyl borate

: 102-24-9
cyclotriboric acid trimethyl ester

: 121-43-7
Trimethyl borate

: 7732-18-5
water

A: 67-56-1
methanol

B: 102-24-9
cyclotriboric acid trimethyl ester

Conditions

Conditions	Yield
In methanol controlled partial hydrolysis; addn. of 2-methyl pentane, removal of CH3OH/2-methyl pentane azeotrope by distn.;;

TRIMETHOXYBOROXINE Chemical Properties

The formula of TRIMETHOXYBOROXINE(102-24-9 ) is C₃H₉B₃O₆.
There are some TRIMETHOXYBOROXINE(102-24-9 )'s descriptions:
Mol weight: 173.53
Physical properties:Colorless liquid, flammable, sensitive to moisture.
Boiling point: 130 °C.
Density: 1.195 g/cm³ (25 °C).
Melting point: 10 °C.
Vapour pressure: 30 mm Hg (25 °C).
Specification: Appearance colorless not quite clear liquid
Purity 96 % min

TRIMETHOXYBOROXINE Toxicity Data With Reference

orl-rat LD50:5160 mg/kg

14KTAK Boron, Metallo-Boron Compounds and Boranes R.M. Adams,New York, NY.: Wiley,1964,693.

TRIMETHOXYBOROXINE Consensus Reports

Reported in EPA TSCA Inventory.

TRIMETHOXYBOROXINE Safety Profile

Slightly toxic by ingestion. When heated to decomposition TRIMETHOXYBOROXINE(102-24-9 ) emits toxic fumes of boron.

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