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CAS RN: 16940-66-2 | 产品编码: S0480
Sodium Borohydride
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| 规格 | 单价 | 同一天 | 2-3个工作日 | 数量 |
|---|---|---|---|---|
| 25G |
S$43.50
|
≥80 | ≥100 |
|
| 100G |
S$82.50
|
11 | ≥100 |
|
| 500G |
S$213.00
|
≥40 | ≥40 |
|
技术规格
| Appearance | White to Almost white powder to crystal |
| Purity(Sodium hypochlorite Method) | min. 95.0 % |
物性（参考值）
| 水溶性 | 可溶 |
| 溶解性（不溶于） | 乙醚 |
GHS
| 象形图 |
|
| 信号词 | Danger |
| 危险性说明 | H301 + H311 : Toxic if swallowed or in contact with skin. H314 : Causes severe skin burns and eye damage. H360 : May damage fertility or the unborn child. H260 : In contact with water releases flammable gases which may ignite spontaneously. |
| 防范说明 | P501 : Dispose of contents/ container to an approved waste disposal plant. P223 : Do not allow contact with water. P260 : Do not breathe dusts or mists. P270 : Do not eat, drink or smoke when using this product. P202 : Do not handle until all safety precautions have been read and understood. P231 + P232 : Handle under inert gas. Protect from moisture. P201 : Obtain special instructions before use. P264 : Wash skin thoroughly after handling. P280 : Wear protective gloves/ protective clothing/ eye protection/ face protection. P370 + P378 : In case of fire: Use dry sand, dry chemical or alcohol-resistant foam to extinguish. P335 + P334 : Brush off loose particles from skin. Immerse in cool water/ wrap in wet bandages. P308 + P313 : IF exposed or concerned: Get medical advice/ attention. P361 + P364 : Take off immediately all contaminated clothing and wash it before reuse. P303 + P361 + P353 : IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower. P301 + P330 + P331 : IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. P301 + P310 + P330 : IF SWALLOWED: Immediately call a POISON CENTER/doctor. Rinse mouth. P304 + P340 + P310 : IF INHALED: Remove person to fresh air and keep comfortable for breathing. Immediately call a POISON CENTER/doctor. P305 + P351 + P338 + P310 : IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER/doctor. P402 + P404 : Store in a dry place. Store in a closed container. P405 : Store locked up. |
相关法规
| RTECS# | ED3325000 |
运输信息
| UN编号 | UN1426 |
| 类别 | 4.3 |
| 包装类别 | I |
| HS编码* | 2850.00-000 |
应用
TCI Practical Example: Reduction of Ketone Using Sodium Borohydride
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Used Chemicals
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Procedure
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Sodium borohydride (250 mg, 6.70 mmol) was separately added to a solution of 4',5'-dimethoxy-2'-nitroacetophenone (1.50 g, 6.70 mmol) in THF (12 mL) and methanol (3 mL) at 0 °C. Then the mixture was allowed to warm to room temperature and stirred for 1.5 hours. The solution was diluted with dichloromethane (15 mL) and washed with water (15 mL x 3) and brine (15 mL), dried over sodium sulfate and filtered. The solvent was removed under reduced pressure. The residue was diluted with THF (6 mL) and the mixture was stirred at 37 °C. Hexane (10 mL) was added to the solution and the mixture was stirred at 0 °C and filtered to give 1 (1.16 g、77%) as a yellow solid.
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Experimenter’s Comments
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The reaction mixture was monitored by TLC (hexane:ethyl acetate = 1:1, Rf = 0.47) and UPLC.
To avoid moisture absorption of sodium borohydride, weighing was done quickly.
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Analytical Data
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Compound 1
1H NMR (400 MHz, CDCl3); δ 7.57 (s, 1H), 7.31 (s, 1H), 5.58 (q, J = 5.4 Hz, 1H), 4.01 (s, 3H), 3.95 (s, 3H), 1.56 (d, J = 5.4 Hz, 3H).
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Lead Reference
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- Triggering a [2]Rotaxane Molecular Shuttle by a Photochemical Bond-Cleavage Strategy
应用
Reducing Agent
References
- Stereoselective synthesis of .beta.-lactams by oxidative coupling of dianions of acyclic tertiary amides
- Forty years of hydride reductions
- Reductions by the alumino- and borohydrides in organic synthesis
应用
Inorganic Hydride Used as A Hydrogen Source of Fuel Cell
References
- An ultrasafe hydrogen generator: aqueous, alkaline borohydride solutions and Ru catalyst.
- A Compact borohydride fuel cell.
- A fuel cell development for using borohydrides as the fuel
- A study on hydrogen generation from NaBH4 solution using the high-performance Co-B catalyst
- A comprehensive review of direct borohydride fuel cells
- Accelerating velocity of hydrogen generation from sodium borohydride by citric acid catalyst
应用
Nickel boride mediated cleavage of 1,3-dithiolanes
Typical procedure: 2,2-Diphenyl-1,3-dithiolane (0.2 g) dissolved in methanol (8 mL) and THF (2 mL). NiCl2·6H2O (0.92 g) is added, followed by NaBH4 (0.44 g). The reaction mixture is stirred vigorously at room temperature for 20 min. The reaction mixture was filtered through a celite pad and washed with methanol (2 x 10 mL). Water is added to the filtrate, which is extracted with ethyl acetate (3 x 10 mL). The combined extract is dried over MgSO4, and concentrated under reduced pressure to give diphenylmethane (0.12g, 92 %).
References
参考文献
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