71320

Sodium borohydride

purum p.a., ≥96% (gas-volumetric)

• Synonyma: Sodium tetrahydridoborate
• Lineární vzorec: NaBH₄
• Číslo CAS: 16940-66-2
• Molekulová hmotnost: 37.83
• EC Number: 241-004-4
• MDL number: MFCD00003518
• UNSPSC Code: 26111700
• PubChem Substance ID: 57652284
• NACRES: NA.22

Vlastnosti

• grade: purum p.a.
• Quality Level: 200
• assay: ≥96% (gas-volumetric)
• form: powder
• reaction suitability: reagent type: reductant
• mp: >300 °C (dec.) (lit.)
• anion traces: chloride (Cl^-): ≤5000 mg/kg; sulfate (SO₄^2-): ≤50 mg/kg
• cation traces: Ca: ≤50 mg/kg; Cd: ≤50 mg/kg; Co: ≤50 mg/kg; Cu: ≤50 mg/kg; Fe: ≤50 mg/kg; K: ≤1000 mg/kg; Ni: ≤50 mg/kg; Pb: ≤50 mg/kg; Zn: ≤50 mg/kg
• SMILES string: [BH4-].[Na+]
• InChI: 1S/BH4.Na/h1H4;/q-1;+1
• InChI key: YOQDYZUWIQVZSF-UHFFFAOYSA-N

Popis

General description

Sodium borohydride 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 that are otherwise susceptible to reduction. It is being considered as a promising candidate for hydrogen storage applications.

Application

Sodium borohydride may be used as a reductant and hydrogen source for the semi-hydrogenation of alkynes to the corresponding alkenes in the presence of nickel nanoparticles generated in situ from nickel chloride and methanol. It can also be used as a reducing agent for the synthesis of gold nanoparticles from gold chloride.

Other Notes

Reduction of carboxylic acid derivatives

Bezpečnostní informace

• pictograms: GHS02,GHS06,GHS08,GHS05
• signalword: Danger
• hcodes: H260,H301,H314,H360FD
• pcodes: P231 + P232 - P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 3 Oral - Eye Dam. 1 - Repr. 1B - Skin Corr. 1B - Water-react 1
• supp_hazards: EUH014
• Storage Class: 4.3 - Hazardous materials which set free flammable gases upon contact with water
• wgk_germany: WGK 2
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges, type P3 (EN 143) respirator cartridges