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rboh
CAS: 1310-82-3
SKU: S1872
Rubidium hydroxide solution 50 wt. % in H2O 99% trace metals basis | SKU: S1872
Synonyms: Aqueous rubidium hydroxide; Rubidium monohydroxide solution; Rubidium(1+) hydroxide
rboh
Rubidium Hydroxide Solution is a 50% w/w aqueous solution of rubidium hydroxide (RbOH), a strongly alkaline compound supplied at high purity for specialized research use. Like other Group 1 hydroxides, it is a powerful, fully dissociating base — but produced and used on a far smaller, more specialized scale than sodium or potassium hydroxide. Sarchem Labs supplies this solution at 99.9% assay (trace metals basis), supported by full documentation (COA, SDS) for regulatory and quality assurance needs. It is primarily used in specialty and academic research settings, including actinide chemistry studies and rubidium/cesium recovery work.
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Specifications

Density1.74 g/mL at 25 °C
Linear FormulaRbOH
Physical FormLiquid
Molecular Weight102.48 g/mol
SMILES String[OH-].[Rb+]
Total Trace Metal Impurities≤1500 ppm
Assay99.9% (trace metals basis)
Concentration50 wt% in H₂O
CAS Number1310-82-3
Storage Class8A – Combustible corrosive hazardous materials
Water Hazard Class (WGK)3
EC Number215-186-0
NACRESNA.23
PubChem Substance ID24854640
UNSPSC Code12352302
MDL NumberMFCD00011194
Quality Segment200
InChI1S/H2O.Rb/h1H2;/q;+1/p-1
InChI KeyCPRMKOQKXYSDML-UHFFFAOYSA-M

Applications

Preparing stock solutions used in research on how neptunium(V) behaves when dissolved in alkali-metal hydroxide media
Recovering rubidium and cesium values from desalination brine through solvent extraction workflows
Serving as a reagent in the synthesis of rubidium hexauranate
Studying the solvent extraction behavior of rubidium recovered from sulfate-based process solutions

Product Description

62393

What is Rubidium Hydroxide Solution?

Rubidium Hydroxide Solution is rubidium hydroxide (RbOH) dissolved in water and supplied by Sarchem Labs as a 50 wt% aqueous solution with an assay of 99.9% on a trace metals basis. Like the hydroxides of its neighboring alkali metals — sodium, potassium, and cesium — RbOH is a strongly basic, fully dissociating compound that forms a dense, highly alkaline liquid at this concentration, with a measured density of 1.74 g/mL at 25 °C.

Because rubidium sits further down Group 1 than sodium or potassium, its hydroxide shares the same strong-base chemistry but is produced and used on a far smaller, more specialized scale. Sarchem Labs supplies this solution at high purity (≤1500 ppm trace metal impurities) for laboratories that need a dependable, well-characterized source of rubidium hydroxide for controlled experimental work.

Uses of Rubidium Hydroxide Solution

This reagent is most commonly cited in specialty and academic research settings rather than in large-scale industrial processing. Documented research uses include formulating stock solutions for actinide chemistry studies — specifically examining how neptunium(V) species behave in alkali-metal hydroxide environments — as well as supporting synthesis work toward rubidium hexauranate.

Rubidium Hydroxide Solution also plays a role in extraction metallurgy and resource-recovery research, where it has been used to help pull rubidium and cesium out of desalination brine streams and to support solvent extraction studies aimed at isolating rubidium from sulfate solutions.

Safety Information

  • Hazard Classification: Acute Tox. 4 (Oral) — Skin Corr. 1B
  • Signal Word: Danger
  • GHS Pictograms: GHS05 (corrosion), GHS07 (harmful/irritant)
  • Hazard Statements: H302+H312+H332 (Harmful if swallowed, in contact with skin, or if inhaled), H314 (Causes severe skin burns and eye damage)
  • Precautionary Statements: P261, P280, P301+P312, P303+P361+P353, P304+P340+P310, P305+P351+P338
  • Storage Class: 8A – Combustible corrosive hazardous materials
  • Water Hazard Class: WGK 3
  • Recommended PPE: Face shield, chemical-resistant gloves, safety goggles, and a type ABEK (EN14387) respirator filter when vapor or mist exposure is possible

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FAQs: Rubidium hydroxide solution 50 wt. % in H2O 99% trace metals basis

Sarchem Labs supplies this product as a 50 wt% aqueous solution of rubidium hydroxide with a 99.9% assay on a trace metals basis, with a density of 1.74 g/mL at 25 °C and no more than 1500 ppm trace metal impurities.

Yes. It is classified as Skin Corr. 1B and carries hazard statement H314, meaning it causes severe skin burns and eye damage on contact. It is also harmful if swallowed, absorbed through skin, or inhaled (H302+H312+H332).

This product falls under Storage Class 8A (combustible corrosive hazardous materials) and should be kept in a corrosion-resistant, sealed container away from incompatible substances.

All three are strong alkali-metal hydroxides that behave similarly in solution as powerful bases. Rubidium hydroxide is generally selected for research applications specifically involving rubidium chemistry, such as actinide studies or rubidium/cesium recovery work.

Handlers should use a face shield, chemical-resistant gloves, and safety goggles at minimum, with a type ABEK (EN14387) respirator filter where vapor or mist exposure is a concern.