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Sodium borohydride

Sodium borohydride (NaBH4) is a very important inorganic compound that has a wide range of applications in chemistry, materials science, and energy. Sodium borohydride crystals are columnar, colorless or light yellow in color, and have the chemical formula NaBH4. The structure of sodium borohydride consists of one boron atom and four hydrogen atoms, with which the boron atoms are covalently bonded. In chemical reactions, sodium borohydride exhibits unique reductive properties, reducing hydrogen atoms from other compounds to hydrogen.

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Borohydride
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2024-08-22 13:54:06
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Detailed Description

Name	Sodium borohydride
Synonyms	SBH
	1H-borole
	VenPure? SF
	Sodium borohydride
	sodium boron(-1) anion
	Sodiumborohydridepowder
	Sodium tetrahydroborate
	Sodiumborohydridepellets
	Sodiumborohydridetablets
	Sodium tetrahydridoborate
	SodiumborohydrideWhitepowder
	Sodiumborohydrideonneutralalumina
	SodiuM borohydride solution 2.0 M in triethylene glycol diMethyl ether
CAS	16940-66-2
EINECS	241-004-4
InChI	InChI=1/C4H5B/c1-2-4-5-3-1/h1-5H
InChIKey	YOQDYZUWIQVZSF-UHFFFAOYSA-N
Physico-chemical Properties
Molecular Formula	BH4Na
Molar Mass	37.83
Density	1.035g/mLat 25°C
Melting Point	>300 °C (dec.) (lit.)
Boling Point	500°C
Flash Point	158°F
Water Solubility	550 g/L (25 ºC)
Appearance	tablets
Specific Gravity	1.4
Color	White
Merck	148592
PH	11 (10g/l, H2O, 20℃)
Storage Condition	Store at RT.
Stability	Stability Stable, but reacts readily with water (reaction may be violent). Incompatible with water, oxidizing agents, carbon dioxide, hydrogen halides, acids, palladium, ruthenium and other metal salt
Sensitive	Hygroscopic
Explosive Limit	3.02%(V)
Physical and Chemical Properties	White Crystalline powder, easy to absorb moisture, Flammable in case of fire
Use	It is used as a reducing agent for aldehydes, ketones and acid chlorides, a foaming agent for plastic industry, a bleaching agent for paper making and a hydrogenating agent for manufacturing Dihydrostreptomycin in pharmaceutical industry
Risk and Safety
Risk Codes	R60 - May impair fertility
	R61 - May cause harm to the unborn child
	R15 - Contact with water liberates extremely flammable gases
	R34 - Causes burns
	R23/24/25 - Toxic by inhalation, in contact with skin and if swallowed.
	R24/25 -
	R35 - Causes severe burns
	R21/22 - Harmful in contact with skin and if swallowed.
	R51/53 - Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
	R42/43 - May cause sensitization by inhalation and skin contact.
	R49 - May cause cancer by inhalation
	R63 - Possible risk of harm to the unborn child
	R62 - Possible risk of impaired fertility
	R36/38 - Irritating to eyes and skin.
	R43 - May cause sensitization by skin contact
	R19 - May form explosive peroxides
	R68 - Possible risk of irreversible effects
	R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Safety Description	S53 - Avoid exposure - obtain special instructions before use.
	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.)
	S43A -
	S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection.
	S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
	S22 - Do not breathe dust.
	S50 - Do not mix with ...
	S36/37 - Wear suitable protective clothing and gloves.
	S61 - Avoid release to the environment. Refer to special instructions / safety data sheets.
UN IDs	UN 3129 4.3/PG 3
WGK Germany	2
RTECS	ED3325000
TSCA	Yes
HS Code	28500090
Hazard Class	4.3
Packing Group	I
Toxicity	LD50 orally in Rabbit: 160 mg/kg LD50 dermal Rabbit 230 mg/kg
Upstream Downstream Industry
Raw Materials	Methyl alcohol
	Sulfuric acid
	Sodium
	Orthoboric acid
	Hydrogen
Downstream Products	bumetanide

. Strong reducibility

Sodium borohydride (NaBH4), as a reducing agent with extremely high activity, plays a vital role in the field of chemistry, especially in the field of Organic synthesis. Its reducing ability is strong, the selectivity is superior, can be used for various organic functional groups to implement efficient reduction reaction. For example, the reduction of aldehydes and ketones to the corresponding alcohols, the reduction of acyl chloride to alcohols, and the reduction of halogenated hydrocarbons to hydrocarbons. In the reduction reaction, sodium borohydride shows excellent chemical selectivity, which can achieve the preferential reduction of specific functional groups. This property gives sodium borohydride a high application value in the field of organic synthesis, enabling it to carry out targeted Reduction reactions for different organic compounds. In practical applications, sodium borohydride helps to improve the synthesis rate and simplify the synthesis route. Compared with traditional reducing agents, the reduction process of sodium borohydride is more environmentally friendly and helps to achieve the goal of green chemistry.