8.06373

Sodium borohydride

fine granular for synthesis

• Synonyme(s) : Sodium borohydride, Sodium tetrahydridoborate
• Formule empirique (notation de Hill): H₄BNa
• Numéro CAS: 16940-66-2
• Poids moléculaire : 37.83
• Numéro MDL: MFCD00003518
• Code UNSPSC : 12352306
• Numéro de classement CE : 241-004-4
• Nomenclature NACRES : NA.22

Propriétés

• Pression de vapeur: <1 hPa ( 25 °C)
• Niveau de qualité: 200
• Forme: solid
• Température d'inflammation spontanée: 220 °C
• Puissance: 160 mg/kg LD₅₀, oral (Rat); 230 mg/kg LD₅₀, skin (Rabbit)
• Limite d'explosivité: 3.02 % (v/v)
• Pertinence de la réaction: reagent type: reductant
• pH: 11 (20 °C, 10 g/L in H₂O)
• Point d'ébullition: 500 °C (decomposition)
• Pf: >360 °C (slow decomposition)
• Température de transition: flash point 69 °C
• Densité: 1.07 g/cm³ at 20 °C
• Masse volumique apparente: 350‑500 kg/m³
• Température de stockage: 2-30°C
• InChI: 1S/BH4.Na/h1H4;/q-1;+1
• Clé InChI: YOQDYZUWIQVZSF-UHFFFAOYSA-N

Description

Description générale

Sodium borohydride (NaBH₄) is the most commonly available borohydride used in several industrial applications. It is considered as a selective reducing agent due to its ability to selectively reduce aldehydes and ketones into their corresponding alcohols in the presence of other functional groups such as nitro, ester, amide, lactone, epoxide, and nitriles. Ethanol and methanol are usually employed as solvents in NaBH₄ reduction reactions.

Application

Sodium borohydride (fine granular) can be used as a reducing agent to prepare:

• Zero valent iron nanoparticles supported on mesoporous carbon (Starbon) by in situ reductions of Fe³⁺ ions.
• Ag nanoparticles on graphene using AgNO₃ as a precursor.
• Ag-Pd/ZrO₂ catalytic system applicable in plasmonic catalysis. It can also be used as a source to store as well as generate hydrogen for energy-carrier applications.

Remarque sur l'analyse

Assay (hypochlorite): ≥ 98.0 %
Identity (ICP-OES): passes test

Informations sur la sécurité

• Pictogrammes: GHS02,GHS05,GHS06,GHS08
• Mention d'avertissement: Danger
• Mentions de danger: H260 - H301 - H314 - H360FD
• Conseils de prudence: P231 + P232 - P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Classification des risques: Acute Tox. 3 Oral - Eye Dam. 1 - Repr. 1B - Skin Corr. 1B - Water-react 1
• Risques supp: EUH014
• Code de la classe de stockage: 4.3 - Hazardous materials, which set free flammable gases upon contact with water
• Classe de danger pour l'eau (WGK): WGK 2
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable