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LC4901 Potassium borohydride
for synthesis


Order number Packaging Quantity Price €
AC31901 Glass bottle 25 g 14.94
AC31901 Glass bottle 100 g 45.45
AC31901 Glass bottle 1 kg 369.9


Product information
Synonyms Potassium tetrahydroborate, Potassium boranate
Hill Formula H4BK
Chemical formula KBH4
HS Code 2850 00 20
EC number 237-360-5
Molar mass 53.94 g/mol
CAS number 13762-51-1


Chemical and physical data
Solubility (20 °C) (rigorous decomposition)
Melting point 500 °C
Molar mass 53.94 g/mol
Density 1.11 g/cm3
Bulk density 400 kg/m3



Safety information
R Phrase R 15-24/25-34
Contact with water liberates extremely flammable gases.Toxic in contact with skin and if swallowed.Causes burns.
S Phrase S 6-14-26-36/37/39-43-45
Keep under protective gas.Keep away from oxidizing and acidic substances as well as heavy-metal compounds.In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.Wear suitable protective clothing, gloves and eye/face protection.In case of fire, use sand. Never use water.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).
Categories of danger highly flammable, toxic, corrosive
Hazard Symbol


Storage class Materials that form flammble gases in contact with water
WGK WGK 2 water endangering
Disposal 26
Alkali and alkaline-earth metals should be taken up in an inert solvent and neutralized by adding 2-propanol (Cat. No. 100995) dropwise with stirring. Should the reaction be more violent than expected, conversion should be carried out with tert-butanol or octanol. Caution: This reaction produces hydrogen, which can form explosive mixtures; take necessary precautions. When the reaction has ceased, add water dropwise; neutralize; container D. In the case of alkali or alkaline-earth borohydrides, add methanol (Cat. No. 106008) with stirring; in the case of alkali or alkaline-earth amides and hydrides, organoaluminium and organotin hydrides, add 2-propanol (Cat. No. 100995) dropwise. The substances, which are usually in solid form, should be previously suspended in an ether! When the respective reaction has ceased, hydrolize with water; then neutralize. Container D or E. Lithium aluminium hydride must also be destroyed by slurrying in an ether. Under an inert gas and with thorough stirring, add dropwise a 1:4 mixture of ethyl acetate (Cat. No. 822277) and the ether used to prepare the slurry. Always ensure thorough mixing (stirring)! Container A.


Transport information
Declaration (transport by sea) IMDG-Code UN 1870 POTASSIUM BOROHYDRIDE, 4.3, I
Declaration (transport by air) IATA-DGR UN 1870 POTASSIUM BOROHYDRIDE, 4.3, I


Toxicological data
LD 50 oral LD50 rat 115 mg/kg
LD 50 dermal LD50 rabbit 230 mg/kg


Assay (hypochlorite) ≥ 97 %