Potassium borohydride

Potassium borohydride, also known as potassium tetrahydroborate or potassium borohydride, has the formula KBH4 and belongs to the category of inorganic compounds. The compound appears as a white crystalline powder with no special odor. In terms of solubility, potassium borohydride can be successfully dissolved in liquid ammonia and water, and it is slightly soluble to ethanol and methanol, but it is almost insoluble in tetrahydrofuran, ether and benzene. Potassium borohydride is known for its excellent chemical stability and strong reducibility, so it is often used as a highly efficient reducing agent. Potassium borohydride is widely used and effective in various chemical reactions, especially in reduction reactions.

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Borohydride
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2024-08-22 13:46:36
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Detailed Description

Name	Potassium borohydride
Synonyms	KBH
	K[BH4]
	Kaliumborhydrid
	Potassium borohydride
	borohydruredepotassium
	Kaliumtetrahydridoborat
	Borohydrure de potassium
	potassium boron(-1) anion
	potassium tetrahydroborate
	Potassium tetrahydridoborate
	Borate(1-),tetrahydro-,potassium
	Borate(1-), tetrahydro-, potassium
CAS	13762-51-1
EINECS	237-360-5
InChI	InChI=1/BH5.K/h1H5;/q-1;+1
InChIKey	ICRGAIPBTSPUEX-UHFFFAOYSA-N
Physico-chemical Properties
Molecular Formula	BH4K
Molar Mass	53.94
Density	1.18 g/mL at 25 °C (lit.)
Melting Point	500 °C (dec.) (lit.)
Water Solubility	190 g/L (25 ºC)
Appearance	Powder
Specific Gravity	1.178
Color	White
Merck	147616
Storage Condition	water-free area
Sensitive	Moisture Sensitive
Refractive Index	1.494
Physical and Chemical Properties	White crystals or slightly gray-yellow Crystalline powder. Density 1.178g/cm3. Slightly Hygroscopic in air, unStable. Dissolve in water, slowly release hydrogen. Soluble in liquid ammonia, amines, methanol-soluble, ethanol, Insoluble in ether, benzene, Tetrahydrofuran, methyl ether and other hydrocarbons. It can be decomposed by acid to release hydrogen. Stable in base. Decomposition at about 500 °c in vacuum.
Use	It is used as a reducing agent for aldehydes, ketones and acid chlorides, etc. It is used as a reducing agent for Analytical Chemistry, pesticides, paper industry and other fine chemical products, and can also be used for the treatment of mercury-containing wastewater, etc.
Risk and Safety
Risk Codes	R14/15 -
	R24/25 -
	R34 - Causes burns
	R11 - Highly Flammable
Safety Description	S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
	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.)
	S7/8 -
	S28A -
	S16 - Keep away from sources of ignition.
UN IDs	UN 1870 4.3/PG 1
WGK Germany	-
RTECS	TS7525000
FLUKA BRAND F CODES	10
TSCA	Yes
HS Code	2850 00 20
Hazard Class	4.3
Packing Group	I
Toxicity	LD50 orally in Rabbit: 167 mg/kg LD50 dermal Rabbit 230 mg/kg
Upstream Downstream Industry
Raw Materials	Methyl alcohol
	Orthoboric acid
	Hydrogen
Downstream Products	Diniconazole
	Paclobutrazol
	Bromoadiolone
	Gliclazide
	Labetalol
	bromohexine hydrochloride
	trimebutine maleate

1. Physical and chemical properties of potassium borohydride

Chemical properties. Inorganic compound, Strong reducing agent, molecular form KBH₄. Reacts with many oxidizing agents and releases hydrogen gas.

Appearance: White crystalline powder, Odorless, stable in air and non-hygroscopic, meaning it does not absorb moisture easily in air.

Solubility: easily soluble in water, gradually release hydrogen when dissolved; Soluble in liquid ammonia, solubility is about 20g/100g liquid ammonia (25℃); Slightly soluble in methanol and ethanol, the solubility is 0.7g/100g methanol and 0.25g/100g ethanol, respectively; Almost insoluble in ether, benzene, tetrahydrofuran and other hydrocarbons.

Stability: Stable in alkaline aqueous solutions, but will quickly decompose to produce hydrogen in acidic environments.

Reactivity: in the case of inorganic acid decomposition, hydrogen is produced, with strong reducibility, suitable for Reduction reactions in Organic synthesis, such as reducing aldehydes, ketones, etc.

Physical properties: Melting point is about 400°C (beginning to decompose), has a certain thermal stability, but will decompose at high temperatures.

2 Characteristics of potassium borohydride

Potassium borohydride, as an important inorganic compound, plays a pivotal role in the field of chemistry. The compound appears as a white crystalline powder at room temperature. Due to its unique physical and chemical properties, the substance has been widely used in many fields.

Firstly, from the point of view of physical properties, potassium borohydride has a low melting point. This characteristic allows potassium borohydride to melt easily when it reaches a specific temperature, thus achieving convenient processing and application in experimental operation. At the same time, its moderate density characteristics are also worth mentioning. It is neither too heavy nor too light, which makes potassium borohydride easy to store and transport.