20346-99-0

Basic information

• Product Name: RUBIDIUM BOROHYDRIDE
• Synonyms: RUBIDIUM BOROHYDRIDE;rubidium tetrahydroborate(1-);rubidium tetrahydridoborate;Rubidium tetrahydridoborate, H 3.9%
• CAS NO: 20346-99-0
• Molecular Formula: BH₄*Rb
• Molecular Weight: 100.31
• EINECS: 243-749-0
• Mol File: 20346-99-0.mol
• Article Data: 5

Chemical Properties

• Appearance: /
• Density: 1.920
• CAS DataBase Reference: RUBIDIUM BOROHYDRIDE(CAS DataBase Reference)
• NIST Chemistry Reference: RUBIDIUM BOROHYDRIDE(20346-99-0)
• EPA Substance Registry System: RUBIDIUM BOROHYDRIDE(20346-99-0)

Safety Data

• Statements: 14-23/24/25-34
• Safety Statements: 26-36/37/39-45
• RIDADR: 1409
• Hazardous Substances Data: 20346-99-0(Hazardous Substances Data)

Upstream product

• 16940-66-2 sodium tetrahydroborate 
• 19414-22-3 rubidium tetrahydroaluminate 
• 132486-03-4 rubidium chloride 
• 14044-65-6 borane-THF 

Downstream Products

• 1333-74-0 hydrogen 
• 11113-50-1 boric acid 

Relevant articles and documents

One Ion, Many Facets: Efficient, Structurally and Thermally Sensitive Luminescence of Eu2+ in Binary and Ternary Strontium Borohydride Chlorides

The Eu2+-doped mixed alkaline metal strontium borohydride chlorides ASr(BH4)3-xClx (A = K, Rb, Cs) and Eu2+-doped strontium borohydride chloride Sr(BH4)2-xClx have been prepared by mechanochemical synthesis. Intense blue photoluminescence for Sr(BH4)2-xClx (λem= 457 nm) and cyan photoluminescence for the perovskite-type mixed alkaline metal strontium borohydride chlorides ASr(BH4)3-xClx (A = K, Rb, Cs) (λem = 490 nm) is already observable after short milling times. Temperature dependent luminescence measurements reveal an appreciable blue shift with increasing temperature for all ASr(BH4)3-xClx (A = K, Rb, Cs) until 500 K. This extremely large shift, caused by structural relaxation, as well as the vibrationally induced emission band broadening can serve as a sensitive response signal for temperature sensing, and this unique behavior has, to the best of our knowledge, not been reported in any Eu2+ doped phosphor so far. Additionally, bright luminescence, high quantum efficiencies, and very low thermal quenching of these Eu2+-doped borohydrides show that such host materials could serve in solid state lighting applications.

Low-temperature Specific Heat of Rubidium Borohydride RbBH4

The specific heat of RbBH4 has been studied in an adiabatic calorimeter.Two anomalies were detected on the Cp-T curve in the 25-52 K and 150-350 K ranges respectively.The thermodynamic properties of RbBH4 under standard conditions are: Cp0(198.15 K)=100.3+/-0.2 J K-1, S0(298.15 K)=126.6 +/-0.2 J K-1 mole-1, H0(298.15 K)-H0(0)=18210+/-40 J mole-1, -0(198.15 K)-H0(0)/298.15=65.54 J K-1 mole-1.