Rubidium sulfate - ≥99% , CAS No.7488-54-2

CAS: 7488-54-2 Cat. No.: R112821 Molecular Weight: 267.00 EC Number: 231-301-7

GRADE & PURITY ≥99%

Synonyms

EINECS 231-301-7 | Rubidium sulfate, 99.99% trace metals basis | Sulfuric acid, rubidium salt (1:2) | rubidium(1+);sulfate | DTXSID80889577 | Rubidium sulfate, 99.8% trace metals basis | Sulfuric acid, dirubidium salt | NSC 84274 | Rubidium sulfate (Rb2SO

Storage

Room temperature,Desiccated,Cool

Shipped In

Normal

Specifications

Synonyms

EINECS 231-301-7 | Rubidium sulfate, 99.99% trace metals basis | Sulfuric acid, rubidium salt (1:2) | rubidium(1+);sulfate | DTXSID80889577 | Rubidium sulfate, 99.8% trace metals basis | Sulfuric acid, dirubidium salt | NSC 84274 | Rubidium sulfate (Rb2SO

Specifications & Purity

≥99%

Storage

Room temperature, Desiccated, Cool

Shipped In

Normal

Purity

≥99%

Names and Identifiers

• Canonical Smiles: [O-]S(=O)(=O)[O-].[Rb+].[Rb+]
• IUPAC Name: rubidium(1+);sulfate
• InChIKey: GANPIEKBSASAOC-UHFFFAOYSA-L
• INCHI: 1S/H2O4S.2Rb/c1-5(2,3)4;;/h(H2,1,2,3,4);;/q;2*+1/p-2
• Isomeric SMILES: [O-]S(=O)(=O)[O-].[Rb+].[Rb+]
• WGK Germany: 2
• RTECS: WS8350000
• Molecular Weight: 267.00

Taxonomic Classification

Taxonomy Tree

• Kingdom Inorganic compounds
  • Superclass Mixed metal/non-metal compounds
    • Class Alkali metal oxoanionic compounds
      • Subclass Alkali metal sulfates

• Kingdom: Inorganic compounds
• Superclass: Mixed metal/non-metal compounds
• Class: Alkali metal oxoanionic compounds
• Subclass: Alkali metal sulfates
• Intermediate Tree Nodes: Not available
• Direct Parent: Alkali metal sulfates
• Alternative Parents: Inorganic salts Inorganic oxides
• Molecular Framework: Not available
• Substituents: Alkali metal sulfate - Inorganic oxide - Inorganic salt
• Description: This compound belongs to the class of inorganic compounds known as alkali metal sulfates. These are inorganic compounds in which the largest oxoanion is sulfate, and in which the heaviest atom not in an oxoanion is an alkali metal.
• External Descriptors: Not available

Data sources

1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61.

DOI: 10.1186/s13321-016-0174-y

Chemical and Physical Properties

• Sensitivity: Moisture sensitive.
• Boil Point(°C): 1700°C
• Melt Point(°C): 1059°C
• Molecular Weight: 267.000 g/mol
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 4
• Rotatable Bond Count: 0
• Exact Mass: 265.775 Da
• Monoisotopic Mass: 265.775 Da
• Topological Polar Surface Area: 88.600 Ų
• Heavy Atom Count: 7
• Formal Charge: 0
• Complexity: 62.200
• Isotope Atom Count: 0
• Defined Atom Stereocenter Count: 0
• Undefined Atom Stereocenter Count: 0
• Defined Bond Stereocenter Count: 0
• Undefined Bond Stereocenter Count: 0
• The total count of all stereochemical bonds: 0
• Covalently-Bonded Unit Count: 3

XLogP3

References

1. Yanfei Fan, Ziyu Zhuang, Dandan Gao, Dongdong Li, Dewen Zeng.  (2023)  Revisiting the Solid–Liquid Phase Equilibrium of the Li2SO4 + Rb2SO4 + H2O and Li2SO4 + Cs2SO4 + H2O Systems.  JOURNAL OF CHEMICAL AND ENGINEERING DATA,      [PMID:] [10.1021/acs.jced.3c00434]

2. Yanfei Fan, Dongdong Li, Dandan Gao, Dewen Zeng, Wu Li.  (2019)  Heat capacity of Rb2SO4(aq) and Cs2SO4(aq) solutions and thermodynamic modelling of (Rb2SO4 + H2O) and (Cs2SO4 + H2O) systems.  JOURNAL OF CHEMICAL THERMODYNAMICS,      [PMID:] [10.1016/j.jct.2019.106001]

3. Xiaofang Li, Yuandong Wu, Dajiang Mei, Thomas Doert.  (2019)  Hybrid Inorganic-Organic Frameworks: Synthesis and Crystal Structures of RbFe(SO4)(C2O4)0.5·H2O and CsM(SO4)(C2O4)0.5·H2O (M = Mn, Fe).  ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE,  645  (10): (745-751).  [PMID:] [10.1002/zaac.201800273]

4. Yanqiang Li, Sangen Zhao, Pai Shan, Xianfeng Li, Qingran Ding, Shuai Liu, Zhenyue Wu, Sasa Wang, Lina Li, Junhua Luo.  (2018)  Li8NaRb3(SO4)6·2H2O as a new sulfate deep-ultraviolet nonlinear optical material.  Journal of Materials Chemistry C,  6  (45): (12240-12244).  [PMID:] [10.1039/C8TC04361B]

5. Feng Zheng, Hanqin Gong, Zheng Li, Weiguang Yang, Jiahe Xu, Pengfei Hu, Yang Li, Yu Gong, Qiang Zhen.  (2017)  Tertiary structure of cactus-like WO3 spheres self-assembled on Cu foil for supercapacitive electrode materials.  JOURNAL OF ALLOYS AND COMPOUNDS,      [PMID:] [10.1016/j.jallcom.2017.04.094]

6. Yanfei Fan, Dandan Gao, Dongdong Li, Dewen Zeng.  (2025)  Dissolution and recrystallization of alum to separate cesium, rubidium and potassium using their different precipitation kinetics to reach higher purity than solubility equilibria based purity of MAl(SO4)2 (M = Cs, Rb, K).  HYDROMETALLURGY,      [PMID:] [10.1016/j.hydromet.2025.106454]

7. Wencheng Lu, Yaoguo Shen, Qiong Wu.  (2024)  RbY(SO4)2·4H2O: A new ultraviolet birefringent crystal.  JOURNAL OF SOLID STATE CHEMISTRY,      [PMID:] [10.1016/j.jssc.2023.124546]

8. Yi Wang, Zilong Zhang, Ze Wang, Yujie Yan, Tong Feng, An Xie.  (2025)  High-Performance Electrochromic Energy Storage Devices Based on Hexagonal WO3 and SnO2/PB Composite Films.  Materials,  18  (12): (2871).  [PMID:40573003] [10.3390/ma18122871]

9. Luyong Zhang, Zhencheng Wu, Jingdong Yan, Shibin Wang, Zilong Chen, Zhihua Yang, Fangfang Zhang, Shilie Pan.  (2025)  Enhancement of Birefringence in Alkali Metal Sulfates Induced by Rare Earth Metal-Centered Polyhedra and Structure Regulation via Cations.  CHEMISTRY OF MATERIALS,      [PMID:] [10.1021/acs.chemmater.5c02373]

10. Luyong Zhang, Jianyi Zuo, Guangsheng Xu, Jinbin Fan, Xue Bai, Zhihua Yang, Fangfang Zhang, Shilie Pan.  (2026)  Significant Enhancement of Birefringence Resulting from the Introduction of [BO2(OH)] Groups into Borosulfates.  CHEMISTRY OF MATERIALS,      [PMID:] [10.1021/acs.chemmater.5c03014]