Wodorek sodu do redukcji >99,9% - 500g

Sodium Borohydride (NaBH₄)
Other Names: Sodium tetrahydridoborate, Sodium tetrahydroborate
Chemical Formula: NaBH₄
Molar Mass: 37.83 g/mol
CAS Number: 16940-66-2
Purity: ≥99.9% (anhydrous, high-purity grade)
Appearance: White to grayish crystalline powder
Odor: Odorless or faintly metallic

Sodium borohydride is a powerful reducing agent widely used in organic and inorganic synthesis. It is especially valued for its selectivity and stability in protic solvents under controlled conditions.

Chemical and Physical Properties

• Density: ~1.07 g/cm³

• Melting Point: 400 °C (decomposes)

• Boiling Point: Not applicable – decomposes before boiling

• Solubility in Water: ~55 g/L at 20 °C (slow decomposition with hydrogen release)

• Solubility in Other Solvents: Reacts slowly with methanol, ethanol; insoluble in ethers

• Reactivity: Reacts with acids, alcohols, and water to release hydrogen gas

• Stability: Moisture sensitive; stable under dry, inert conditions

Applications

Organic Synthesis

• Reduces aldehydes, ketones, acid chlorides, and some esters to corresponding alcohols.

• Frequently used in laboratory and industrial reduction processes.

Inorganic Chemistry

• Reducing agent for metal salts and catalysts (e.g., gold, platinum, palladium nanoparticles).

Paper Industry

• Used in certain bleaching processes (non-food grade formulations).

Water Treatment (Technical Use)

• Acts as an oxygen scavenger or reductant in selective treatment applications.

Safety

Signal Word: ⚠️ Danger

Hazard Statements:

• H260: In contact with water releases flammable gases which may ignite spontaneously

• H314: Causes severe skin burns and eye damage

• H302: Harmful if swallowed

• H411: Toxic to aquatic life with long-lasting effects

Precautionary Statements:

• P223: Do not allow contact with water

• P231+P232: Handle under inert gas. Protect from moisture

• P280: Wear protective gloves, clothing, and eye/face protection

• P303+P361+P353: IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water

• P305+P351+P338: IF IN EYES: Rinse cautiously with water. Remove contact lenses. Continue rinsing

• P370+P378: In case of fire: Use dry sand or Class D extinguishing agent

• P501: Dispose of contents/container in accordance with local regulations

Handling and Storage

• Handling: Avoid moisture exposure. Use only in dry conditions or under inert atmosphere (e.g., nitrogen or argon).

• Storage: Store tightly sealed in a cool, dry place, away from acids, oxidizers, and moisture.

• Incompatibilities: Water, alcohols, acids, strong oxidizing agents

Environmental Considerations

Reacts with water to produce flammable hydrogen gas and borates. Avoid discharge into drains or aquatic environments. Collect spills using dry, non-combustible absorbents.