Rubidium acetate

Rubidium acetate
Names
	IUPAC name Rubidium acetate
	Other names Rubidium(I) acetate;
Identifiers
CAS Number	563-67-7 ;
3D model (JSmol)	Interactive image ;
ChemSpider	144356 ;
ECHA InfoCard	100.008.415
EC Number	209-255-4;
PubChem CID	23673628 ;
UNII	86H795SZ6D ;
CompTox Dashboard (EPA)	DTXSID10883442 ;
	InChI InChI=1S/C2H4O2.Rb/c1-2(3)4;/h1H3,(H,3,4);/q;+1/p-1 Key: FOGKDYADEBOSPL-UHFFFAOYSA-M;
	SMILES CC(=O)[O-].[Rb+];
Properties
Chemical formula	CH3COORb
Molar mass	144.51 g/mol
Appearance	White solid
Melting point	246 °C (475 °F; 519 K) (decomposes)
Solubility in water	86 g/100 ml (45 °C); 89.3 g/100 ml (99.4 °C)
log P	−0.561[ citation needed ]
Hazards
NFPA 704 (fire diamond)	0 1 1
	NIOSH (US health exposure limits):
PEL (Permissible)	TWA 10 mg/m3
Related compounds
Other anions	Rubidium formate
Other cations	Hydrogen acetate ; Lithium acetate ; Sodium acetate ; Potassium acetate ; Caesium acetate
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Last updated January 19, 2026

Rubidium acetate (CH₃COORb) is the rubidium salt of acetic acid. It is a white, hygroscopic solid.^[1] It can be prepared by reacting rubidium metal, rubidium carbonate, or rubidium hydroxide ^[3] with acetic acid.

Uses

Rubidium acetate is used as a catalyst for the polymerization of silanol terminated siloxane oligomers.^[4]

References

1 2 3 4 Perry, Dale L. (2016-04-19). Handbook of Inorganic Compounds. CRC Press. p. 348. ISBN 978-1-4398-1462-8.
↑ "Safety data sheet" (PDF). s3.amazonaws.com. 2015. Retrieved 2021-02-03.
↑ Kalle, Paulina; Bezzubov, Stanislav I.; Vener, Mikhail V.; Churakov, Andrei V. (2025-10-15). "Polymorphism and Crystallization of Sodium Acetate". Crystal Growth & Design. 25 (20): 8658–8664. doi:10.1021/acs.cgd.5c01101. ISSN 1528-7483.
↑ "Rubidium acetate". gelest.com.

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[handbook-1] 1 2 3 4 Perry, Dale L. (2016-04-19). Handbook of Inorganic Compounds. CRC Press. p. 348. ISBN 978-1-4398-1462-8.

[2] "Safety data sheet" (PDF). s3.amazonaws.com. 2015. Retrieved 2021-02-03.

[3] Kalle, Paulina; Bezzubov, Stanislav I.; Vener, Mikhail V.; Churakov, Andrei V. (2025-10-15). "Polymorphism and Crystallization of Sodium Acetate". Crystal Growth & Design. 25 (20): 8658–8664. doi:10.1021/acs.cgd.5c01101. ISSN 1528-7483.

[4] "Rubidium acetate". gelest.com.

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Names

IUPAC name Rubidium acetate
Other names Rubidium(I) acetate
Identifiers
CAS Number	563-67-7
3D model (JSmol)	Interactive image
ChemSpider	144356
ECHA InfoCard	100.008.415
EC Number	209-255-4
PubChem CID	23673628
UNII	86H795SZ6D
CompTox Dashboard (EPA)	DTXSID10883442
InChI InChI=1S/C2H4O2.Rb/c1-2(3)4;/h1H3,(H,3,4);/q;+1/p-1 Key: FOGKDYADEBOSPL-UHFFFAOYSA-M
SMILES CC(=O)[O-].[Rb+]
Properties
Chemical formula	CH₃COORb
Molar mass	144.51 g/mol
Appearance	White solid
Melting point	246 °C (475 °F; 519 K)^[1] (decomposes)
Solubility in water	86 g/100 ml (45 °C)^[1] 89.3 g/100 ml (99.4 °C)^[1]
log P	−0.561^{[ citation needed ]}
Hazards^[2]
NFPA 704 (fire diamond)	0 1 1
NIOSH (US health exposure limits):
PEL (Permissible)	TWA 10 mg/m³
Related compounds
Other anions	Rubidium formate
Other cations	Hydrogen acetate Lithium acetate Sodium acetate Potassium acetate Caesium acetate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references