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Specifications:
| Application | Analytical Chemistry, Organic Synthesis | ||
| Storage Temperature | Ambient | ||
| Product Type | Laboratory Chemical | Forms | Powder |
| Product Brand | Sigma-Aldrich | ||
| Product Grade | Analytical grade | Formula | KBH₄ |
Potassium borohydride (KBH₄) is a highly effective inorganic reducing agent widely used in organic synthesis, materials science, and catalysis. Supplied as a ≥97% pure powder, it offers strong and selective reduction capability for a variety of functional groups.
This compound is particularly valued for its stability compared to sodium borohydride and its ability to perform efficient reductions under controlled conditions, making it a versatile reagent for both laboratory-scale and industrial applications.
Key Features & Benefits
1. Powerful Reducing Agent
-
Efficient reduction of:
- Carbonyl compounds (ketones, aldehydes)
- Nitro compounds
- Metal salts
2. Versatile Synthetic Applications
-
Suitable for:
- Organic synthesis
- Nanoparticle preparation
- Catalytic transformations
3. High Purity & Consistency
- ≥97% assay ensures reproducibility
- Suitable for analytical and preparative workflows
4. Enhanced Stability
- More stable than many hydride reagents under certain conditions
- Allows controlled reactivity in complex reactions
5. Broad Industrial & Research Utility
-
Used in:
- Fine chemical synthesis
- Materials engineering
- Catalysis research
Applications
- Reduction of metal salts to nanoparticles (e.g., copper nanoparticles)
- Synthesis of allylic alcohols via enone/ketone reduction
- Reduction of nitroarenes to azoxy compounds
- Preparation of nickel–boron catalysts and alloys
- Hydrogen generation and energy-related research
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Name | Potassium Borohydride |
| Synonym | Potassium Tetrahydroborate |
| Chemical Formula | KBH₄ |
| CAS Number | 13762-51-1 |
| Molecular Weight | 53.94 g/mol |
| Purity | ≥97% |
| Form | Powder |
| Density | 1.18 g/mL (25 °C) |
| Melting Point | ~500 °C (decomposition) |
| Function | Reducing agent |
Ordering Information
| Product Code | Pack Size | Packaging |
|---|---|---|
| 455571-100G | 100 g | Bottle |
| 455571-500G | 500 g | Bottle |
| 455571-2KG | 2 kg | Bottle |
Reaction & Mechanistic Insight
Potassium borohydride acts as a hydride donor, enabling:
- Transfer of hydride ions (H⁻) to electrophilic centers
- Reduction of carbonyl groups to alcohols
- Formation of metal nanoparticles via salt reduction
Its reactivity can be tuned depending on:
- Solvent system
- Catalysts (e.g., transition metals)
- Reaction conditions
Unique Advantages
- Strong and efficient hydride reducing agent
- Versatile for organic, inorganic, and materials chemistry
- Suitable for nanotechnology and catalysis applications
- High purity ensures consistent reaction performance
- Trusted quality from Sigma-Aldrich
Sigma-Aldrich™ Potassium Borohydride (≥97%) is a reliable and versatile reducing agent for a wide range of synthetic and analytical applications. Its strong reduction capability, stability, and adaptability make it an essential reagent for laboratories working in organic synthesis, nanomaterials, and catalysis research.
- Pack Size: 100g 500g 2kg