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CAS RN: 25895-60-7 | Product Number: S0396

Sodium Cyanoborohydride [Reducing Agent]


Purity: >95.0%(T)
Synonyms:
  • Sodium Cyanotrihydridoborate
Documents:
5G
₹2,800
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25G
₹8,200
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250G
₹32,400
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Product Number S0396
Purity / Analysis Method >95.0%(T)
Molecular Formula / Molecular Weight CH__3BNNa = 62.84  
Physical State (20 deg.C) Solid
Store Under Inert Gas Store under inert gas
Condition to Avoid Moisture Sensitive
CAS RN 25895-60-7
Reaxys Registry Number 4152656
PubChem Substance ID 87575903
Merck Index (14) 8606
MDL Number

MFCD00003516

Specifications
Appearance White to Almost white powder to crystal
Purity(Iodometric Titration) min. 95.0 %
Properties (reference)
Solubility in water Completely soluble,Decomposes in contact with water
Degree of solubility in water 2,120 g/l   29 °C
Solubility (very soluble in) Methanol
Solubility (soluble in) Dimethylformamide,Tetrahydrofuran
Solubility (slightly sol. in) Ethanol
Solubility (insoluble in) Ether,Benzene
GHS
Pictogram Pictogram Pictogram Pictogram Pictogram
Signal Word Danger
Hazard Statements H300 + H310 + H330 : Fatal if swallowed, in contact with skin or if inhaled.
H314 : Causes severe skin burns and eye damage.
H410 : Very toxic to aquatic life with long lasting effects.
H260 : In contact with water releases flammable gases which may ignite spontaneously.
Precautionary Statements P501 : Dispose of contents/ container to an approved waste disposal plant.
P223 : Do not allow contact with water.
P273 : Avoid release to the environment.
P260 : Do not breathe dust/ fume/ gas/ mist/ vapors/ spray.
P270 : Do not eat, drink or smoke when using this product.
P262 : Do not get in eyes, on skin, or on clothing.
P231 + P232 : Handle under inert gas. Protect from moisture.
P271 : Use only outdoors or in a well-ventilated area.
P264 : Wash skin thoroughly after handling.
P280 : Wear protective gloves/ protective clothing/ eye protection/ face protection.
P284 : Wear respiratory 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.
P391 : Collect spillage.
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.
P403 + P233 : Store in a well-ventilated place. Keep container tightly closed.
P402 + P404 : Store in a dry place. Store in a closed container.
P405 : Store locked up.
Related Laws:
Transport Information:
UN Number UN3134
Class 4.3 / 6.1
Packing Group II
Application
Reductive Amination: Borch Reaction

Typical Procedure:
To a stirred solution of N-ethylbenzylamine (675 mg, 5 mmol) and 37% aqueous formaldehyde (2 mL, 25 mmol) in acetonitrile (15 mL) is added sodium cyanoborohydride (500 mg, 8 mmol). A vigorous exothermic reaction ensues, and a dark residue separates. The reaction mixture is stirred for 15 min, and then glacial acetic acid is added dropwise until the solution tests neutral on wet pH paper. Stirring is continued for an additional 45 min, glacial acetic acid being added occasionally to maintain the pH near neutrality. The solvent is evaporated at reduced pressure, and 2 N KOH (20 mL) is added to the residue. The resulting mixture is extracted with ether (3 × 20 mL). The combined ether extracts are washed with 0.5 N KOH (20 mL) and then extracted with 1 N HCl (3 × 10 mL). The acid extracts are combined and neutralized with solid KOH and then extracted with ether (3 × 20 mL). The combined ether extracts are dried (K2CO3) and evaporated in vacuo to give N-methyl-N-ethylbenzylamine (735 mg, Y. 98%) as a colorless, GPLC-pure oil.

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