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Sodium borohydride

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Name

Sodium borohydride

EINECS 241-004-4
CAS No. 16940-66-2 Density 1.035 g/mL at 25 °C
PSA 0.00000 LogP -1.45160
Solubility Water: 550 g/L (25 °C) Melting Point >300 °C (dec.)(lit.)
Formula NaBH4 Boiling Point 500oC
Molecular Weight 37.83 . Flash Point 69 °C
Transport Information UN 3129 4.3/PG 3 Appearance white solid
Safety 22-26-36/37/39-43A-45 Risk Codes 15-23/24/25-34
Molecular Structure Molecular Structure of 16940-66-2 (Sodium borohydride) Hazard Symbols FlammableF,ToxicT
Synonyms

Sodium tetrahydroborate(1-);Sodium borohydride (Na(BH4));Hidkitex DF;Sodium Borohydride, granular;Sodium Borohydride, powder;Sodium borohydride(SBH);sodium tetrahydroborate;

 

Sodium borohydride Synthetic route

121-43-7

Trimethyl borate

7646-69-7

sodium hydride

16940-66-2

sodium tetrahydroborate

Conditions
ConditionsYield
Heating;99.5%
In neat (no solvent) 1mol B(OCH3)3, 4mol NaH, 225-275°C;; 90-96% NaBH4;;94%
In neat (no solvent) 1mol B(OCH3)3, 4mol NaH, 225-275°C;; 90-96% NaBH4;;94%

boric acid trimethylester tetrahydrofuranate

Tetrahydro-furan; compound with trifluoroborane

7646-69-7

sodium hydride

16940-66-2

sodium tetrahydroborate

Conditions
ConditionsYield
In tetrahydrofuran byproducts: NaF; addn. of B(OCH3)3*THF to NaH at 60-65°C (stirring, N2-atmosphere), NaH dissolves, boiling, cooling to ambient temp., addn. of BF3*THF, distn. of THF and B(OCH3), extractn. of residue with isopropyl amine;; pure product;;99%
In tetrahydrofuran byproducts: NaF; addn. of B(OCH3)3*THF to NaH at 60-65°C (stirring, N2-atmosphere), NaH dissolves, boiling, cooling to ambient temp., addn. of BF3*THF, distn. of THF and B(OCH3), extractn. of residue with isopropyl amine;; pure product;;99%

neodymium borohydride * 3 tetrahydrofuran

disodium 5,6-dihydro-1,4-dithiine-2,3-dithiolate

A

16940-66-2

sodium tetrahydroborate

B

[Na3(tetrahydrofuran)1.5Nd(5,6-dihydro-1,4-dithiine-2,3-dithiolate)3]

Conditions
ConditionsYield
In tetrahydrofuran (Ar); a flask charged with Nd complex, THF condensed, C4H4S2(SNa)2 added, stirred for 3 d at 20°C; filtered, evapd., extd. (THF), filtered; obtained impure;A n/a
B 99%
7646-69-7

sodium hydride

19287-45-7

diborane

16940-66-2

sodium tetrahydroborate

Conditions
ConditionsYield
In further solvent(s) react. of NaH with B2H6 in alkylene glycol dialkylether at 35-75°C;;98%
In tetrahydrofuran in abs. tetrahydrofurane; 4 h, under shaking; good yield; Na(BH4) suspension distilled, filtered and dried in oil pump vacuum at 130°C; purity = 97.5 %;93%
In tetrahydrofuran in abs. tetrahydrofurane; 4 h, under shaking; good yield; Na(BH4) suspension distilled, filtered and dried in oil pump vacuum at 130°C; purity = 97.5 %;93%
110-18-9

N,N,N,N,-tetramethylethylenediamine

NaZn(BH4)3*3DME

A

16940-66-2

sodium tetrahydroborate

B

N,N,N',N'-tetramethylethylenediaminebis(tetrahydroborate)zinc(II)

Conditions
ConditionsYield
In benzene org. compd. soln. addn. dropwise (magnetic stirring) to Zn-complex soln., NaBH4 ppt. filtration off after 1 h, solvent evapn. from filtrate (vac.); residue washing (pentane), drying (vac.); elem. anal; thermal anal.;A 77%
B 97%
109-63-7

trifluoroborane diethyl ether

7646-69-7

sodium hydride

A

16940-66-2

sodium tetrahydroborate

B

19287-45-7

diborane

Conditions
ConditionsYield
In diethylene glycol method for preparation of diborane, addn. of BF3-etherate (frehly distd.) to NaH in diglyme;;A n/a
B 92%
In diethylene glycol method for preparation of diborane, addn. of BF3-etherate (frehly distd.) to NaH in diglyme;;A n/a
B 92%
In diethyl ether at 110°C, method for preparation of diborane;;
In diethyl ether at 110°C, method for preparation of diborane;;

borax

1333-74-0

hydrogen

1310-73-2

sodium hydroxide

16940-66-2

sodium tetrahydroborate

Conditions
ConditionsYield
magnesium In water byproducts: MgO; process starts from borax and NaOH by exothermal steam process (H2O); dread at 270°C; H2 at surface of Mg particles generated protide to form NaBH4; process dependent on of rate temp. change, size of Mg particles; XRD;90%
7637-07-2

boron trifluoride

7646-69-7

sodium hydride

16940-66-2

sodium tetrahydroborate

Conditions
ConditionsYield
With catalyst: Na-alcoholate In neat (no solvent) passing BF3 over NaH in presence of a Na-alcoholate, 250-300°C;;90%
In neat (no solvent) byproducts: B2H6; on passing a mixture of BF3 and H2 (ratio=1:2) over powdered NaH at about 180°C;;
In diethyl ether react. of NaH with a soln. of BF3 in ether in an autoclave (about 10 at), 24h, about 120°C;;
In mineral oil at 250-265°C;; washing with petroleum ether, extractn. of NaBH4 from the residue with liquid NH3 at -33°C;;
In neat (no solvent) byproducts: B2H6; on passing a mixture of BF3 and H2 (ratio=1:2) over powdered NaH at about 180°C;;

NaSm(BH4)4 * 4 dimethoxyethane

A

16940-66-2

sodium tetrahydroborate

B

[Sm(BH4)3(tetrahydrofuran)3]

Conditions
ConditionsYield
With tetrahydrofuran In neat (no solvent) byproducts: DME; 140-160°C, vac., 2 h; extn. (THF), filtration off of NaBH4, distn. off of solvent; elem. anal.;A n/a
B 89%
121-43-7

Trimethyl borate

7646-69-7

sodium hydride

A

16940-66-2

sodium tetrahydroborate

B

18024-69-6

sodium tetramethoxyborate

Conditions
ConditionsYield
In tetrahydrofuran with excess NaH; at 65°C;A 83%
B n/a
In tetrahydrofuran on boiling in THF, pptn. of NaBH4;;
In tetrahydrofuran on boiling in THF, pptn. of NaBH4;;
18024-69-6

sodium tetramethoxyborate

7646-69-7

sodium hydride

16940-66-2

sodium tetrahydroborate

Conditions
ConditionsYield
In neat (no solvent) heating to 250-270°C, excess NaH;;78%
In neat (no solvent) heating to 250-270°C, excess NaH;;78%
In neat (no solvent) molar ratio NaH:NaB(OCH3)4=4:1, 250.C;; 91% NaBH4;;66%
In neat (no solvent) molar ratio NaH:NaB(OCH3)4=4:1, 250.C;; 91% NaBH4;;66%

sodium trimethoxyborohydride

7646-69-7

sodium hydride

16940-66-2

sodium tetrahydroborate

Conditions
ConditionsYield
In neat (no solvent) molar ratio NaH:NaBH(OCH3)3=3:1, 250-270°C;;78%
In neat (no solvent) heating to 250-270°C, excess NaH;;78%
In neat (no solvent) molar ratio NaH:NaBH(OCH3)3=3:1, 250-270°C;;78%

Sodium borate

magnesium hydride

16940-66-2

sodium tetrahydroborate

Conditions
ConditionsYield
With sodium carbonate In neat (no solvent) byproducts: MgO, CO2; ball milled at room temp. for 60 min; extn. by anhyd. ethylendiamine under Ar; filtered soln. evapd. in vac. at room temp.; detn. by XRD;78%
With sodium peroxide In neat (no solvent) byproducts: MgO, H2; ball milled at room temp. for 60 min; extn. by anhyd. ethylendiamine under Ar, soln. evapd. in vac. at room temp.; detn. by XRD;67%
With sodium hydroxide In neat (no solvent) byproducts: MgO, H2; ball milled at room temp. for 60 min; extn. by anhyd. ethylendiamine under Ar; filtered soln. evapd. in vac. at room temp.; detn. by XRD;64%
In neat (no solvent) byproducts: MgO, B2O3; ball milled at room temp. for 60 min; extn. by anhyd. ethylendiamine under Ar; filtered soln. evapd. in vac. at room temp.; detn. by XRD;43%

NaNd(BH4)4 * 4 dimethoxyethane

A

16940-66-2

sodium tetrahydroborate

B

neodymium borohydride * 3 tetrahydrofuran

Conditions
ConditionsYield
With tetrahydrofuran In neat (no solvent) byproducts: DME; 140-160°C, vac., 2 h; extn. (THF), filtration off of NaBH4, distn. off of solvent, drying (vac., 1 h); elem. anal.;A n/a
B 78%
148977-74-6

sodium amidotrihydridoborate

13292-87-0

dimethylsulfide borane complex

16940-66-2

sodium tetrahydroborate

Conditions
ConditionsYield
In tetrahydrofuran for 5h; Inert atmosphere;78%

magnesium hydride

BO2(1-)*(x)H2O*Na(1+)

16940-66-2

sodium tetrahydroborate

Conditions
ConditionsYield
for 6h; Milling;76%

sodium borate

1333-74-0

hydrogen

7440-23-5

sodium

16940-66-2

sodium tetrahydroborate

Conditions
ConditionsYield
In neat (no solvent) react. of Na-borate with Na and H2 at 400-500°C, H2-pressure: several atm, addn. of SiO2 to separate excess Na in form of Na2SiO3;; purity up to 96%;;75%

sodium triborate

1333-74-0

hydrogen

7440-23-5

sodium

16940-66-2

sodium tetrahydroborate

Conditions
ConditionsYield
In neat (no solvent) react. of Na-borate with Na and H2 at 400-500°C, H2-pressure: several atm, addn. of SiO2 to separate excess Na in form of Na2SiO3;; purity up to 96%;;75%

disodium octaborate

1333-74-0

hydrogen

7440-23-5

sodium

16940-66-2

sodium tetrahydroborate

Conditions
ConditionsYield
In neat (no solvent) react. of Na-borate with Na and H2 at 400-500°C, H2-pressure: several atm, addn. of SiO2 to separate excess Na in form of Na2SiO3;; purity up to 96%;;75%
13755-29-8

sodium tetrafluoroborate

1333-74-0

hydrogen

7440-23-5

sodium

16940-66-2

sodium tetrahydroborate

Conditions
ConditionsYield
In further solvent(s) introduction of dry H2 under pressure in a dispersion of Na in an inert solvent at 275°C, simultanuous addn. of NaBF4;;75%
In further solvent(s) introduction of dry H2 under pressure in a dispersion of Na in an inert solvent at 250-350°C, simultanuous addn. of NaBF4;;

Sodium borate

1333-74-0

hydrogen

7440-23-5

sodium

16940-66-2

sodium tetrahydroborate

Conditions
ConditionsYield
In neat (no solvent) react. of Na-borate with Na and H2 at 400-500°C, H2-pressure: several atm, addn. of SiO2 to separate excess Na in form of Na2SiO3;; purity up to 96%;;75%
14044-65-6

borane-THF

148977-74-6

sodium amidotrihydridoborate

16940-66-2

sodium tetrahydroborate

Conditions
ConditionsYield
In tetrahydrofuran at 20℃; for 5h; Inert atmosphere;75%

sodium tetrahydroxyborate

Mg17Al12

A

1333-84-2, 1344-28-1

aluminum oxide

B

16940-66-2

sodium tetrahydroborate

Conditions
ConditionsYield
for 20h; Milling; Inert atmosphere;A n/a
B 72%

sodium yttrium hydroborate*4 1,2-dimethoxyethane

597-49-9

3-ethylpentan-3-ol

A

16940-66-2

sodium tetrahydroborate

B

72033-96-6

ytrrium tetrahydridoborate

C

144782-40-1

bis(3-ethyl-3-pentoxy)borane

Conditions
ConditionsYield
In tetrahydrofuran byproducts: H2; under inert atm.; excess of alcohol in THF added dropwise at room temp. to stirred soln. of tetrahydroborate complex in THF (accompanied by vigorous gas evolution); stirring was continued for 1 h; mixt. allowed to stand for the reaction to be completed; within 5 ds ppt. sepd. by filtration (identified as NaBH4 by X-ray diffraction and IR spectroscopy); filtrate was distd. (vac., 0.1 mmHg) at room temp. to remove solvent and at 50°C; residue pumped out at 100-115°C; volatile collected ...;A 70%
B n/a
C 69%
37080-36-7

tetraphenylphosphonium tetrahydroborate

NaLu(BH4)4*(1,2-dimethoxyethane)4

A

16940-66-2

sodium tetrahydroborate

B

(Ph4P)[Lu(BH4)4]

Conditions
ConditionsYield
In dichloromethane CH2Cl2 was added to mixt. NaLu(BH4)4*4DME andPh4PBH4 and stirred for several minutes; NaBH4 was filtered off, soln. was concd., Et2O was added, ppt. was separated, washed with Et2O and dried in vac.; elem. anal.;A n/a
B 68.5%

NaZr(BH4)5*3(1,2-dimethoxyethane)

597-49-9

3-ethylpentan-3-ol

A

16940-66-2

sodium tetrahydroborate

B

zirconium(IV) borohydride

C

144782-40-1

bis(3-ethyl-3-pentoxy)borane

Conditions
ConditionsYield
In tetrahydrofuran byproducts: H2; under inert atm.; excess of alcohol in THF added dropwise at room temp. to stirred soln. of tetrahydroborate complex in THF (accompanied by vigorous gas evolution); stirring was continued for 1 h; mixt. allowed to stand for the reaction to be completed; within 5 ds ppt. sepd. by filtration (identified as NaBH4 by X-ray diffraction and IR spectroscopy); filtrate was distd. (vac., 0.1 mmHg) at room temp. to remove solvent and at 50°C; residue pumped out at 100-115°C; volatile collected ...;A 66%
B n/a
C 65%

BO2(1-)*(x)H2O*Na(1+)

1333-74-0

hydrogen

1310-73-2

sodium hydroxide

16940-66-2

sodium tetrahydroborate

Conditions
ConditionsYield
With aluminium at 579.84℃; under 17251.7 Torr;65%

boron trioxide

7646-69-7

sodium hydride

16940-66-2

sodium tetrahydroborate

Conditions
ConditionsYield
In neat (no solvent) heating to >330°C for 20-48h;;60%
In neat (no solvent) heating to >330°C for 20-48h;;60%
With catalyst: Na-alcoholate In neat (no solvent) at about 350°C;;

boron trioxide

7646-69-7

sodium hydride

A

sodium metaborate

B

16940-66-2

sodium tetrahydroborate

Conditions
ConditionsYield
In neat (no solvent) on trituration at 330-350°C for 20-48h;;A n/a
B 60%
In neat (no solvent) on trituration at 330-350°C for 20-48h;;A n/a
B 60%
heating at 330 - 350°C;
heating at 330 - 350°C;

sodium metaborate

7646-69-7

sodium hydride

16940-66-2

sodium tetrahydroborate

Conditions
ConditionsYield
With silica gel In solid powders ball milled for 4 h at 400 rpm, SiO2 added, ball-milled for 2 h more, pressed into pellet under 10, 20 or 30 MPa in Ar-filled box, calcined under 0.1 MPa Ar at 480°C for 5 h; extd. by isopropyl amine in modified Soxlet apparatus for 3 h; filtered,evapd. at 50°C;32%
16940-66-2

sodium tetrahydroborate

calcium chloride

calcium borohydride

Conditions
ConditionsYield
In tetrahydrofuran byproducts: sodium chloride; under N2, soln. of CaCl2 and NaBH4 (molar ratio 1:1) in THF stirred with glass beads at 67°C (refluxed) for 1 h;100%
In tetrahydrofuran byproducts: sodium chloride; under N2, soln. of CaCl2 and NaBH4 (molar ratio 1:1) in THF stirred with glass beads at 25°C for 8 h;99%
In tetrahydrofuran byproducts: sodium chloride; under N2, soln. of CaCl2 and NaBH4 (molar ratio 1:1) in THF stirred with magnetic stirrer at 67°C (refluxed) for 8i h;96%
16940-66-2

sodium tetrahydroborate

7553-56-2

iodine

14452-61-0

diborane

Conditions
ConditionsYield
byproducts: H2, NaI; Interaction of initial cryst. materials in molar ratio NaBH4:I2 = 1.35 under mechanical activation with a vibration ball mill (dry N2, atm. pressure, 25°C).; Detn. of gas phase formed by infrared and mass spectroscopy, and gas volumetric anal.;100%
byproducts: H2, NaI; Interaction of initial cryst. materials in molar ratio NaBH4:I2 = 1.5 under mechanical activation with a vibration ball mill (dry N2, atm. pressure, 25°C).; Detn. of gas phase formed by infrared and mass spectroscopy, and gas volumetric anal.;97.7%
Kinetics; byproducts: H2, NaI; Interaction of initial cryst. materials in molar ratio NaBH4:I2 = 2.5 under mechanical activation with a vibration ball mill (dry N2, atm. pressure, 25°C).; Detn. of gas phase formed by infrared and mass spectroscopy, and gas volumetric anal.;94%
Kinetics; byproducts: H2, NaI; Interaction of initial cryst. materials in molar ratio NaBH4:I2 = 2.0 under mechanical activation with a vibration ball mill (dry N2, atm. pressure, 25°C).; Detn. of gas phase formed by infrared and mass spectroscopy, and gas volumetric anal.;88.7%
byproducts: H2, HI; Grinding of initial materials (molar ratio = 1) while being cooled withliq. N2, thorough mixing, transferring of mixt. to a thermographic ampoule and heating in vac. or N2.; Sepn. of gas mixt. by fractional condensation. Detn. of composition after the thermography by gas volumetric anal.;
16940-66-2

sodium tetrahydroborate

7550-35-8

lithium bromide

lithium borohydride

Conditions
ConditionsYield
In tetrahydrofuran byproducts: sodium bromide; under N2, soln. of LiBr and NaBH4 (molar ratio 1:1) in THF stirred withglass beads at 67°C (refluxed) for 8 h;100%
In tetrahydrofuran byproducts: sodium bromide; under N2, soln. of LiBr and NaBH4 (molar ratio 1:1) in THF stirred withmagnetic stirrer at 67°C (refluxed) for 16 h;99%
In diethyl ether byproducts: sodium bromide; under N2, soln. of LiBr in Et2O stirred with magnetic stirrer for 2 min, 1 equiv of NaBH4 introduced, maintained at 35°C with stirring for 32 h;99%
16940-66-2

sodium tetrahydroborate

lithium chloride

lithium borohydride

Conditions
ConditionsYield
In tetrahydrofuran byproducts: sodium chloride; under N2, soln. of LiCl and NaBH4 (molar ratio 1:1) in THF stirred withglass beads at 25°C for 24 h or at 67°C (refluxed) for 10h;100%
extraction with ether; purity: 97-98 %;75%
In tetrahydrofuran byproducts: sodium chloride; under N2, soln. of LiCl and NaBH4 (molar ratio 1:1) in THF stirred withmagnetic stirrer at 67°C (refluxed) for 48 h;65%
16940-66-2

sodium tetrahydroborate

91159-98-7

benzo-2-chloro-1,3,2-diazaborolane

89799-28-0

2,3-dihydro-1H-1,3,2-benzodiazaborole

Conditions
ConditionsYield
In benzene recrystn. from benzene;100%
16940-66-2

sodium tetrahydroborate

7664-41-7

ammonia

10043-11-5

ammonia borane complex

Conditions
ConditionsYield
In ammonia to NaBH4 in a flask at -40°C NH3 is condensed, then slowly S8 isadded (5 h), to the mixt. (after 3 h) CH2Cl2 is added, then the mixt. is warmed to room temp.; residue is extd. with CH2Cl2, the soln. is evapd., elem. anal.;100%
16940-66-2

sodium tetrahydroborate

[(μ-η(2)-η(3)-HC*C-CH2)CoMo(Cp)(CO)5](BF4)

126979-16-6

(μ-η(2)-η(2)-HC*CCH3)CoMo(Cp)(CO)5

Conditions
ConditionsYield
In dichloromethane Ar-atmosphere; addn. of excess of NaBH4 to soln. of complex at 0°C; extn. (ether), washing org. layer by H2O, drying (MgSO4), evapn.; elem. anal.;100%
16940-66-2

sodium tetrahydroborate

103746-20-9, 103833-40-5

IrH2(CH3CN)(C6H5P(CH2CH2CH2P(C6H11)2)2)(1+)*BF4(1-)={IrH2(CH3CN)(C6H5P((CH2)3P(C6H11)2)2)}{BF4}

145036-85-7

IrH3(C6H5P(CH2CH2CH2P(C6H11)2)2)*C2H5OH

Conditions
ConditionsYield
In tetrahydrofuran nitrogen atmosphere; NaBH4 added to the Ir complex in THF; mixt. stirred for 20 min; addn. of ethanol, stirring (1 h); removal of the solvent (red. pressure); residue dissolved in THF, filtration; elem. anal.;100%
16940-66-2

sodium tetrahydroborate

105404-21-5

1,3-diferrocenyl-2-propen-1-one

72971-83-6

rac-1,3-diferrocenylprop-2-en-1-ol

Conditions
ConditionsYield
In 1,4-dioxane; methanol NaBH4 added to soln. of Fe complex (stirring); stirred (14 h); H2O added; cooled (7-8°C); ppt. filtered; washed (H2O); dried (room temp.); recrystd. (hexane); elem.anal.;100%
16940-66-2

sodium tetrahydroborate

441072-64-6

Pt2Me2(μ-Cl)(μ-N,N'-bis[(2-diphenylphosphino)phenyl]formamidinate)

441072-56-6

Pt2(methyl)2(μ-H)(μ-N,N'-bis[2-(diphenylphosphino)phenyl]formamidinate)

Conditions
ConditionsYield
In methanol; dichloromethane under N2 atm. to soln. Pt2Me2(μ-Cl)(μ-dpfam) in CH2Cl2 was addedNaBH4 and MeOH at 0°C and mixt. was stirred for 1 h; solvents were removed under reduced pressure, residue was extd. with CH2Cl2 and filtered, soln. was evapd.; elem. anal.;100%
16940-66-2

sodium tetrahydroborate

196520-48-6

(η(5)-cyclopentadienyl)OsCl(triisopropylphosphine)2

196520-49-7

OsH(η(5)-C5H5)(PiPr3)2

Conditions
ConditionsYield
With MeOH In toluene air-free atmosphere; stirring (room temp., 15 min); filtering, evapn., pentane addn., filtering, evapn.;100%
16940-66-2

sodium tetrahydroborate

14044-65-6

borane-THF

186336-54-9

diphosphane-borane

186336-57-2

sodium 1,1,2-tris(borane)-1,2,2-trihydrogendiphosphide

Conditions
ConditionsYield
In tetrahydrofuran byproducts: H2, Na2[P2H2(BH3)4]; N2 atm.; molar ratio P2H4BH3:NaBH4 1:1, cooling (-78 to -196°C), stirring (4 h), heating (-78°C, 3 h), stirring (room temp., 6 h); crystn. (-78°C, several d);100%
16940-66-2

sodium tetrahydroborate

[(5,7-dimethyl-6-anthracyl-1,4,8,11-tetraazacyclotetradeca-4,7-diene)nickel(II)] nitrate iodide

sodium perchlorate

[(5,7-dimethyl-6-anthracyl-1,4,8,11-tetraazacyclotetradecane)nickel(II)] perchlorate dihydrate

Conditions
ConditionsYield
In methanol a 15 equiv of NaBH4 was added to a soln. of complex in methanol, the mixt. was allowed to stir at room temp. for 2 h, ppt. was filtered off, dissolved in H2O, aq. satd. NaClO4 was added dropwise, cooled; ppt. was filtered, washed with ice-cold water and then ether; elem. anal.;100%
16940-66-2

sodium tetrahydroborate

[(5,7-dimethyl-6-(p-hydroxymethylbenzyl)-1,4,8,11-tetraazacyclotetradeca-4,7-diene)nickel(II)] nitrate iodide

sodium perchlorate

[(5,7-dimethyl-6-(p-hydroxymethylbenzyl)-1,4,8,11-tetraazacyclotetradecane)nickel(II)] perchlorate

Conditions
ConditionsYield
In methanol a 15 equiv of NaBH4 was added to a soln. of complex in methanol, the mixt. was allowed to stir at room temp. for 2 h, ppt. was filtered off, dissolved in H2O, aq. satd. NaClO4 was added dropwise, cooled; ppt. was filtered, washed with ice-cold water and then ether;100%
16940-66-2

sodium tetrahydroborate

60426-33-7

(2,6-bis[(di-t-butylphosphino)methyl]phenyl)chloronickel

60399-53-3

(2,6-bis[(di-t-butylphosphino)methyl]phenyl)hydridonickel

Conditions
ConditionsYield
In ethanol; benzene excess of NaBH4, stirring in C6H6/EtOH=1:1 for 20 h at 20°C, addn. of further NaBH4. stirring for 3 h; addn. of water and C6H6, evapn. of C6H6-layer;100%
16940-66-2

sodium tetrahydroborate

39007-30-2, 52019-98-4

[2,6-bis(2-(2-mercaptophenyl)1-methyl-2-azaethenyl)pyridine]zinc(II)

354115-72-3

[2,6-bis(1-(2-mercaptoanilino)ethyl)pyridine]zinc(II)

Conditions
ConditionsYield
In ethanol; N,N-dimethyl-formamide all manipulations under Ar atm.; soln. of NaBH4 in EtOH/DMF (1/4) added dropwise to soln. of complex in DMF at 0°C, stirred at room temp for 2 h; DMF/EtOH removed in vac., residue dissolved in MeOH, pptd. by addn. of water; elem. anal.;100%
16940-66-2

sodium tetrahydroborate

203380-20-5

(1S,2R,3S,4R)-3-methoxymethyl-2-triphenylstannylbicyclo[2.2.1]heptane(-)

7553-56-2

iodine

203380-22-7

diphenyl[(1S,2R,3S,4R)-3-(1-methoxymethyl)bicyclo[2.2.1]heptan-2-yl]tin hydride

Conditions
ConditionsYield
In dichloromethane I2 addn. to Sn-compd. soln. (DCM), stirring 1 h at room temp., concn. (reduced pressure), B-compd. soln. (EtOH), after 1 h mixt. partitioning between satd. aq. NH4Cl and Et2O, aq. phase extn. (Et2O), extract drying (MgSO4), concn. (reduced pressure);100%
16940-66-2

sodium tetrahydroborate

852290-93-8

[(5,7-dimethyl-6-benzyl-1,4,8,11-tetraazacyclotetradeca-4,7-diene)nickel(II)] nitrate iodide

sodium perchlorate

[(5,7-dimethyl-6-benzyl-1,4,8,11-tetraazacyclotetradecane)nickel(II)] perchlorate monohydrate

Conditions
ConditionsYield
In methanol a large excess of NaBH4 was added to a soln. of complex in methanol, themixt. was allowed to stir at room temp. for 2 h, ppt. was filtered off, dissolved in H2O, aq. satd. NaClO4 was added dropwise, cooled; ppt. was filtered, washed with ice-cold water and then ether; elem. anal.;100%
16940-66-2

sodium tetrahydroborate

diphenyl[(1S,2R,3S,4R)-3-hydroxymethylbicyclo[2.2.1]heptan-2-yl]tin iodide

203380-24-9

diphenyl[(1S,2R,3S,4R)-3-hydroxymethylbicyclo[2.2.1]heptan-2-yl]tin hydride

Conditions
ConditionsYield
In ethanol B-compd. soln. addn. to Sn-compd. soln. at ambient temp., mixt. concn. (reduced pressure) after 30 min, residue partitionation between satd. aq.NH4Cl and Et2O, aq. phase extn. (Et2O), org. extract drying (MgSO4), co ncn. (reduced pressure);100%
16940-66-2

sodium tetrahydroborate

920-66-1

1,1,1,3',3',3'-hexafluoro-propanol

Sodium Tris(1,1,1,3,3,3-hexafluoroisopropoxy)borohydride

Conditions
ConditionsYield
In tetrahydrofuran at 0℃;100%
16940-66-2

sodium tetrahydroborate

1101230-25-4

carbonylchlorohydrido(4,5-bis((diisopropylphosphino)methyl)acridine)ruthenium(II)

C28H43BClNOP2Ru

Conditions
ConditionsYield
In tetrahydrofuran at 20℃; for 2h; Inert atmosphere;100%
16940-66-2

sodium tetrahydroborate

110-71-4

1,2-dimethoxyethane

55011-46-6

5-nitro-2H-tetrazole

A

[Na(1,,2-dimethoxyethane)3][bis(5-nitro-2H-tetrazolyl)dihydroborate]

B

1333-74-0

hydrogen

Conditions
ConditionsYield
at 20℃; for 4h; Inert atmosphere;A 100%
B 3.9 mmol
16940-66-2

sodium tetrahydroborate

110-71-4

1,2-dimethoxyethane

75393-84-9

5-(trinitromethyl)-2H-tetrazole

A

[Na(1,,2-dimethoxyethane)3][bis(5-(trinitromethyl)-2H-tetrazolyl)dihydroborate]

B

1333-74-0

hydrogen

Conditions
ConditionsYield
at 20℃; for 4h; Inert atmosphere;A 100%
B 3.8 mmol
16940-66-2

sodium tetrahydroborate

110-71-4

1,2-dimethoxyethane

75393-85-0

5-(fluorodinitromethyl)tetrazole

A

[Na(1,,2-dimethoxyethane)3][bis(5-(fluorodinitromethyl)-2H-tetrazolyl)dihydroborate]

B

1333-74-0

hydrogen

Conditions
ConditionsYield
at 20℃; for 4h; Inert atmosphere;A 100%
B 3.7 mmol
16940-66-2

sodium tetrahydroborate

110-71-4

1,2-dimethoxyethane

26621-32-9

3,5-dinitro-1H-1,2,4-triazole

A

[Na(1,,2-dimethoxyethane)3][bis(3,5-dinitro-1H-1,2,4-triazolyl)dihydroborate]

B

1333-74-0

hydrogen

Conditions
ConditionsYield
at 20℃; for 4h; Inert atmosphere;A 100%
B 4.1 mmol
16940-66-2

sodium tetrahydroborate

517-25-9

trinitromethane

sodium (trinitromethyl)borate

Conditions
ConditionsYield
In 1,2-dimethoxyethane Schlenk technique; Inert atmosphere;100%
In tetrahydrofuran at 20℃; for 0.75h;
16940-66-2

sodium tetrahydroborate

7677-24-9

trimethylsilyl cyanide

88503-36-0

sodium dicyanodihydridoborate

Conditions
ConditionsYield
for 48h; Inert atmosphere; Reflux;100%
16940-66-2

sodium tetrahydroborate

cis-α-dichloro {N,N′-[1,2-phenylenebis(methylene)]bis[2-(diphenylphosphino)ethylamine]}ruthenium(II)

hydrideborohydride {N,N′-[1,2-phenylenebis(methylene)]bis[2-(diphenylphosphino)ethylamine]}ruthenium(II)

Conditions
ConditionsYield
With ethanol for 1h; Inert atmosphere; Reflux;100%
16940-66-2

sodium tetrahydroborate

[bis(2-diphenylphosphinophenyl)amide]PdCl

C36H29NP2Pd

Conditions
ConditionsYield
In tetrahydrofuran; benzene-d6 at 20℃; for 1h; Inert atmosphere;100%
16940-66-2

sodium tetrahydroborate

(S)-(+)-β-phenyl-β-alanine methyl ester hydrochloride

C9H12BNO2

Conditions
ConditionsYield
With zinc(II) chloride In tetrahydrofuran for 4h; Reagent/catalyst; Reflux;99.6%

Sodium borohydride Chemical Properties

Empirical Formula: H4BNa
Molecular Weight: 37.8325 g/mol
Flashing point: 69 °C
Density: 1.07 cm3
Melting point: 400 °C (dec.)
Storage tempreture: Store at RT.
Water solubility: 550 g/L (25 ºC)
Sensitive: Hygroscopic
Appearance: White solid
Structure of Sodium borohydride (CAS NO.16940-66-2):
                                  
Product Category of Sodium borohydride (CAS NO.16940-66-2): Inorganic Chemicals;Reduction;Synthetic Organic Chemistry;Typical Metal Compounds;Synthetic Reagents;Reducing Reagents

Sodium borohydride History

The compound was discovered in the 1940s by H. I. Schlessinger, who led a team that developed metal borohydrides for wartime applications.

Sodium borohydride Uses

 Sodium borohydride (CAS NO.16940-66-2) can be used as reducing agent of aldehyde, ketone, and chloride type , and  can be used for the foam in plastic industry, paper bleaching agent, as well as the hydrogenation agent of pharmaceutical industry manufacturing dihydrostreptomycin.

Sodium borohydride Production

The production likes:
H3BO3+3CH3OH→B(OCH3)3+3H2O
2Na+H2→2NaH
4NaH+B(OCH3)3→NaBH4+3CH3ONa

Sodium borohydride Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LCLo inhalation 9mg/m3 (9mg/m3) SENSE ORGANS AND SPECIAL SENSES: OTHER: EYE
BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD
LUNGS, THORAX, OR RESPIRATION: STRUCTURAL OR FUNCTIONAL CHANGE IN TRACHEA OR BRONCHI
"Spravochnik po Toksikologii i Gigienicheskim Normativam Vol. -, Pg. 177, 1999.
mouse LD50 oral 50mg/kg (50mg/kg) SENSE ORGANS AND SPECIAL SENSES: OTHER: EYE
BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD
LUNGS, THORAX, OR RESPIRATION: STRUCTURAL OR FUNCTIONAL CHANGE IN TRACHEA OR BRONCHI
"Spravochnik po Toksikologii i Gigienicheskim Normativam Vol. -, Pg. 177, 1999.
mouse LDLo intraperitoneal 18mg/kg (18mg/kg)   "Boron, Metallo-Boron Compounds and Boranes," Adams, R.M., ed., New York, John Wiley & Sons, Inc., 1964Vol. -, Pg. 693, 1964.
rabbit LD50 oral 50mg/kg (50mg/kg) SENSE ORGANS AND SPECIAL SENSES: OTHER: EYE
BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD
LUNGS, THORAX, OR RESPIRATION: STRUCTURAL OR FUNCTIONAL CHANGE IN TRACHEA OR BRONCHI
"Spravochnik po Toksikologii i Gigienicheskim Normativam Vol. -, Pg. 177, 1999.
rabbit LD50 skin 230mg/kg (230mg/kg) SENSE ORGANS AND SPECIAL SENSES: OTHER: EYE
BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD
LUNGS, THORAX, OR RESPIRATION: STRUCTURAL OR FUNCTIONAL CHANGE IN TRACHEA OR BRONCHI
"Spravochnik po Toksikologii i Gigienicheskim Normativam Vol. -, Pg. 177, 1999.
rabbit LDLo intraperitoneal 60mg/kg (60mg/kg)   "Boron, Metallo-Boron Compounds and Boranes," Adams, R.M., ed., New York, John Wiley & Sons, Inc., 1964Vol. -, Pg. 693, 1964.
rabbit LDLo subcutaneous 300mg/kg (300mg/kg) SENSE ORGANS AND SPECIAL SENSES: OTHER: EYE
BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD
LUNGS, THORAX, OR RESPIRATION: STRUCTURAL OR FUNCTIONAL CHANGE IN TRACHEA OR BRONCHI
"Spravochnik po Toksikologii i Gigienicheskim Normativam Vol. -, Pg. 177, 1999.
rat LC50 inhalation 36mg/m3 (36mg/m3) SENSE ORGANS AND SPECIAL SENSES: OTHER: EYE
BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD
LUNGS, THORAX, OR RESPIRATION: STRUCTURAL OR FUNCTIONAL CHANGE IN TRACHEA OR BRONCHI
"Spravochnik po Toksikologii i Gigienicheskim Normativam Vol. -, Pg. 177, 1999.
rat LD50 intraperitoneal 18mg/kg (18mg/kg)   AMA Archives of Industrial Health. Vol. 17, Pg. 124, 1958.
rat LD50 oral 162mg/kg (162mg/kg) SENSE ORGANS AND SPECIAL SENSES: OTHER: EYE
BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD
LUNGS, THORAX, OR RESPIRATION: STRUCTURAL OR FUNCTIONAL CHANGE IN TRACHEA OR BRONCHI
"Spravochnik po Toksikologii i Gigienicheskim Normativam Vol. -, Pg. 177, 1999.
rat LD50 subcutaneous 177mg/kg (177mg/kg) SENSE ORGANS AND SPECIAL SENSES: OTHER: EYE
BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD
LUNGS, THORAX, OR RESPIRATION: STRUCTURAL OR FUNCTIONAL CHANGE IN TRACHEA OR BRONCHI
"Spravochnik po Toksikologii i Gigienicheskim Normativam Vol. -, Pg. 177, 1999.

 Sodium borohydride (CAS NO.16940-66-2) hasn't been listed as a carcinogen by NTP, IARC, ACGIH, or CA Prop 65. And the toxicological properties have not been fully investigated. You can see actual entry in RTECS for complete information.

Sodium borohydride Safety Profile

It is highly corrosive, and will cause burns upon contact with any area of the body.
Hazard Codes: FlammableF,ToxicT,DangerousN,CorrosiveC,HarmfulXn
Risk Statements: 60-61-15-34-23/24/25-24/25-35-21/22-51/53-42/43-49-63-62-36/38-43 
R15:Contact with water liberates extremely flammable gases. 
R21/22:Harmful in contact with skin and if swallowed. 
R23/24/25:Toxic by inhalation, in contact with skin and if swallowed. 
R34:Causes burns. 
R36/38:Irritating to eyes and skin. 
R42/43:May cause sensitization by inhalation and skin contact. 
R43:May cause sensitization by skin contact. 
R49:May cause cancer by inhalation. 
R51/53:Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. 
R60:May impair fertility. 
R61:May cause harm to the unborn child.
Safety Statements: 53-43-45-43A-36/37/39-26-22-50-36/37 
S22:Do not breathe dust. 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36/37:Wear suitable protective clothing and gloves. 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection. 
S43:In case of fire use ... (there follows the type of fire-fighting equipment to be used.) 
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) 
S50:Do not mix with ... 
S53:Avoid exposure - obtain special instructions before use.

Sodium borohydride Specification

 Sodium borohydride , its cas register number is 16940-66-2. It also can be called Sodium tetrahydroborate ; Sodium borotritide ; and Sodium borohydrate . It is hazardous, so the first aid measures and others should be known. Such as: When on the skin: first, should flush skin with plenty of water immediately for at least 15 minutes while removing contaminated clothing. Secondly, get medical aid. Or in the eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Then get medical aid soon. While, it's inhaled: Remove from exposure and move to fresh air immediately. Give artificial respiration while not breathing. When breathing is difficult, give oxygen. And as soon as to get medical aid. Then you have the ingesting of the product : Wash mouth out with water, and get medical aid immediately. Notes to physician: Treat supportively and symptomatically.
In addition, Sodium borohydride (CAS NO.16940-66-2) could be stable under normal temperatures and pressures. It is not compatible with water, water, acids, alcohols, copper, halogenated agents, iron, sulfuric acid, dimethyl formamide, alkalies, nickel, palladium, aluminum chloride + bis(2-methoxyethyl) ether, diborane + bis(2-methoxyethyl) ether, ruthenium salts, anhydrous acids, polyglycols, dimethylacetamide, metal salts, trichlorosilane, aldehydes, activated carbon, ketones, heavy metals, and you must not take it with high temperatures, incompatible materials, ignition sources, excess heat, temperatures above 220 °C, and should be exposured to moist air or water. And also prevent it to broken down into hazardous decomposition products: carbon monoxide, carbon dioxide, oxides of boron, borane, hydrogen gas, sodium oxide.

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