Sodium borohydride
Sodium borohydride (CAS: 16940-66-2), with the linear formula NaBH₄ and molecular weight 37.83 g/mol, is a powerful reducing agent. It is widely employed in organic synthesis for the reduction of aldehydes and ketones to alcohols. It also finds application in the selective reduction of other functional groups and in various industrial processes, showcasing its versatility as a key chemical reagent.
- IUPAC
- Sodium tetrahydridoborate

Selective Reduction in Organic Synthesis
Sodium borohydride is a versatile reducing agent primarily used for the selective reduction of aldehydes and ketones to their corresponding primary and secondary alcohols. Its reactivity can be modulated by solvent choice and reaction conditions, allowing for targeted transformations in complex molecules.
Hydrogen Generation
Reaction of sodium borohydride with water or acids liberates hydrogen gas. This property makes it a potential candidate for portable hydrogen generation systems, although careful control of reaction conditions is necessary due to its reactivity.
Bleaching and Purification
In specific formulations, sodium borohydride can act as a reducing agent for bleaching applications. It is also utilised in certain purification processes to remove unwanted oxidised impurities.
| Molecular weight | 37.83 |
|---|---|
| Linear formula | NaBH4 |
| Assay | 98% |
| Grade | purum |
| Form | tablets |
| Density | 1.035 g/mL at 25 °C |
| Concentration | 3 M in tetraglyme |
| Melting point | >300 °C (dec.)(lit.) |



Hazard statements
- H260In contact with water releases flammable gases
- H301Toxic if swallowed
- H314Causes severe skin burns and eye damage
Precautionary statements
- P223Do not allow contact with water
- P231Handle under inert gas
- P280Wear protective gloves, clothing and eye/face protection
- P301IF SWALLOWED
- P370In case of fire
- P422
| Protective equipment | Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P2 (EN 143) respirator cartridges, type P3 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 1426 4.3 / PGI |
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | F,T |
| Risk statements (R) | 15-24/25-34 |
| Safety statements (S) | 22-26-36/37/39-43-45 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Sodium borohydride primarily used for?
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Sodium borohydride (CAS: 16940-66-2) is primarily used as a reducing agent in organic synthesis, particularly for converting aldehydes and ketones into alcohols. It also has applications in other chemical reduction processes.
What is the CAS number and formula for Sodium borohydride?
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The CAS number for Sodium borohydride is 16940-66-2, and its linear formula is NaBH₄.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Sodium borohydride with a purity of 98% (assay) in a purum grade. We do not represent this product as meeting any pharmacopoeia standards such as USP, BP, or EP.
How should Sodium borohydride be handled safely?
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Sodium borohydride is a highly reactive substance that reacts violently with water, releasing flammable hydrogen gas, and is corrosive. It is toxic if swallowed or in contact with skin, and causes severe skin burns and eye damage. Always handle with appropriate personal protective equipment, including eyeshields, face shields, gloves, and suitable respiratory protection, in a well-ventilated area, and keep away from water and ignition sources. Refer to the Safety Data Sheet for comprehensive handling information.
How is Sodium borohydride packed, shipped, and exported?
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Sodium borohydride is packed according to relevant safety regulations for hazardous materials, considering its reactivity and hazard classification (UN 1426, Class 4.3, PG I). Tech Serve Solutions is experienced in exporting chemicals globally, adhering to all international shipping and customs requirements.
How can I request a quote or sample for Sodium borohydride?
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To request a quote or a sample of Sodium borohydride, please contact our sales team through the website or by phone. Provide the product name and CAS number (16940-66-2) for prompt service.
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