[6], Many other hydride reagents are more strongly reducing. Click to predict properties on the Chemicalize site, For medical information relating to Covid-19, please consult the, ACD/Labs Percepta Platform - PhysChem Module, Compounds with the same molecular formula, Search Google for structures with same skeleton, Soluble in water, ammonia and amines. Although practical temperatures and pressures for hydrogen storage have not been achieved, in 2012 a core–shell nanostructure of sodium borohydride was used successfully to store, release and reabsorb hydrogen under moderate conditions. The reducing agent transfers electrons to another substance. Freezing/Melting Point:decomposes Decomposition Temperature:> 305 deg C Solubility: 35% Specific Gravity/Density:1.07 Molecular Formula:H4BNa Molecular Weight:37.82 Section 10 - Stability and Reactivity Chemical Stability: Stable. [17] NaBH4 reacts with water and alcohols, with evolution of hydrogen gas and formation of the corresponding borate, the reaction being especially fast at low pH. The molar mass of NaBH 4 is 37.83 grams per mole. [4], Sodium borohydride has been considered as a solid state hydrogen storage candidate. The lower boiling point of the product may be contributed to impurities in the solution and side reactions that occurred during the addition of NaBH4. Sodium borohydride is a white to grayish crystalline powder. CopyCopied, YOQDYZUWIQVZSF-UHFFFAOYSA-N Benzoic acid's melting point range from 121 C- 125 C, meaning it have 4 potential melting ranges that could be identify as benzoic acid. Such borohydride complexes are often prepared by the action of NaBH4 (or the LiBH4) on the corresponding metal halide. Two mini capillaries, containing the product only, were used to determine the product’s melting point. These can perform a variety of reductions not normally associated with borohydride chemistry, such as alcohols to hydrocarbons and nitriles to primary amines. Molecular Weight: 37.83 . It has a clear white color powder type texture and it is relatively more stable than hydrides of Lithium. The melting point measurement of the hydride reduction product was 45-53 0 C. The literature value for the melting point of the mixed isomers is 62-70 0 C. 7 The melting point is a rather broad range, and occurs well below the literature value, indicating the product is not entirely pure. At a pressure of 6.3 GPa, the structure changes to the tetragonal β-NaBH4 (space group P421c) and at 8.9 GPa, the orthorhombic γ-NaBH4 (space group Pnma) becomes the most stable.[11][12][13]. Sodium borohydride is a source of hydrogen or diborane, which are both flammable. Sodium borohydride. 4 [26] Mixing water or an alcohol with the borohydride converts some of it into unstable hydride ester, which is more efficient at reduction, but the reductant eventually decomposes spontaneously to produce hydrogen gas and borates. From the abstract: "Alkali metal borosilicates are treated with alkali metal hydrides in approx. Sodium borohydride reduces aldehydes and ketones to give the related alcohols. Supplement to. Linear Formula: NaBH 4. The molar mass of this compound is 37.83 g/mol, and the melting point is 400◦C. The weight of the obtained product is 0.12g. Except where otherwise noted, data are given for materials in their, CS1 maint: multiple names: authors list (, Hermann I Schlesinger and Herbert C Brown (1945) ". The density of sodium borohydride at STP corresponds to 1.07 grams per cubic centimetre. [9] Sodium borohydride is soluble in protic solvents such as water and lower alcohols. Composition: Sodium Borohydride 100% Assay Percent: 98+% Boiling Point: Approximately 400°C (decomposes slowly) CAS Number: 16940-66-2 Density: 1.07 Chemical Formula: NaBH4 Molecular Weight: 37.83 g/mol Melting Point: >300 °C (decomposes) Color: White to gray solid Physical State:…. For one mini capillary, the temperature range was 132.1-134.2℃, and the product’s melting point for the second minicapillary ranged from 135.1-137.5℃.
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