8.06373

Sodium borohydride

fine granular for synthesis

• 别名: Sodium borohydride, Sodium tetrahydridoborate
• 经验公式（希尔记法）: H₄BNa
• CAS号: 16940-66-2
• 分子量: 37.83
• MDL號碼: MFCD00003518
• 分類程式碼代碼: 12352306
• 酶委員會索引編號: 241-004-4
• NACRES: NA.22

属性

• 蒸汽壓力: <1 hPa ( 25 °C)
• 品質等級: 200
• 形狀: solid
• 自燃溫度: 220 °C
• 效力: 160 mg/kg LD₅₀, oral (Rat); 230 mg/kg LD₅₀, skin (Rabbit)
• expl. lim.: 3.02 % (v/v)
• 反應適用性: reagent type: reductant
• pH值: 11 (20 °C, 10 g/L in H₂O)
• bp: 500 °C (decomposition)
• mp: >360 °C (slow decomposition)
• 轉變溫度: flash point 69 °C
• 密度: 1.07 g/cm³ at 20 °C
• 體積密度: 350‑500 kg/m³
• 儲存溫度: 2-30°C
• InChI: 1S/BH4.Na/h1H4;/q-1;+1
• InChI 密鑰: YOQDYZUWIQVZSF-UHFFFAOYSA-N

说明

一般說明

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.

應用

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.

分析報告

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

安全信息

• 象形圖: GHS02,GHS05,GHS06,GHS08
• 訊號詞: Danger
• 危險聲明: H260 - H301 - H314 - H360FD
• 防範說明: P231 + P232 - P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• 危險分類: Acute Tox. 3 Oral - Eye Dam. 1 - Repr. 1B - Skin Corr. 1B - Water-react 1
• 安全危害: EUH014
• 儲存類別代碼: 4.3 - Hazardous materials, which set free flammable gases upon contact with water
• 水污染物質分類（WGK）: WGK 2
• 閃點（°F）: Not applicable
• 閃點（°C）: Not applicable