Cesium hydroxide, 99%

Name: Cesium hydroxide, 99%
Brand: Vaqora Chemicals
SKU: VQ-013897

About Cesium hydroxide, 99%

Cesium hydroxide (CAS 21351-79-1) is an alkali metal compound offered by Vaqora Chemicals (Puriss grade), specified at 99% purity. Formula CsHO, molecular weight 149.91 g/mol. Common synonyms include Cesium hydrate and Caesium hydroxide.

The product is provided as a solid. Literature values give a melting point of 272 °C and a density of 3.675 g/cm3. Store in a tightly closed container in a cool, dry and well-ventilated place. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

It is commonly used for materials research and chemical synthesis. It is used across academic and industrial research.

Standard pack sizes are 10 g, 50 g and 1 kg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

Materials research
Chemical synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	Cesium hydroxide, 99%
Catalogue No.	VQ-013897
CAS Number	21351-79-1
Other CAS	35103-79-8
IUPAC name	cesium hydroxide
Molecular formula	CsHO
Molecular weight	149.91 g/mol
Exact mass	149.9082
Grade	Puriss
Purity / assay	99%
HSN code	28259090
InChIKey	HUCVOHYBFXVBRW-UHFFFAOYSA-M
SMILES	[OH-].[Cs+]
PubChem CID	62750

Physical properties
Physical form	Solid
Appearance	Solid
Melting point	272 °C
Density	3.675 g/cm3
H-bond donors / acceptors	1 / 1
TPSA	1 Å²
UN number	UN 2682
Synonyms	Cesium hydrate, Caesium hydroxide, Cesium hydroxide (Cs(OH)), Cesium hydroxide dimer, Caesium hydrate, Cesium hydroxide (ACGIH), Cesium hydroxide, monohydrate, Cesium, di-mu-hydroxydi-, Caesium hydroxide [UN2682] [Corrosive], Caesium hydroxide solution, Cesium Hydroxide, 50% Aqueous

Safety & hazard information (GHS)

Corrosive

Harmful / irritant

Health hazard

Signal word: Danger

Hazard statements

H302Harmful if swallowed
H314Causes severe skin burns and eye damage
H318Causes serious eye damage
H361Suspected of damaging fertility or the unborn child
H373May causes damage to organs through prolonged or repeated exposure

Precautionary statements: P203, P260, P264, P264 + P265, P270, P280, P301 + P317, P301 + P330 + P331, P302 + P361 + P354, P304 + P340, P305 + P354 + P338, P316, P317, P318, P319, P321, P330, P363, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Other grades of CAS 21351-79-1

LR

Caesium hydroxide 50%w/w solution, LR 50%

CAS: 21351-79-1
Formula: CsHO
MW: 149.91 g/mol

VQ-047107

Frequently asked questions

What is the CAS number of Cesium hydroxide, 99%?

The CAS Registry Number of Cesium hydroxide, 99% is 21351-79-1. It is also known as Cesium hydrate, Caesium hydroxide, Cesium hydroxide (Cs(OH)).

What is the molecular formula and molecular weight of Cesium hydroxide, 99%?

Cesium hydroxide, 99% has the molecular formula CsHO and a molecular weight of 149.91 g/mol. Its IUPAC name is cesium hydroxide.

Which grade and pack sizes of Cesium hydroxide, 99% can I order?

We supply Cesium hydroxide, 99% in Puriss (99%) grade, in 10 g, 50 g, 1 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Cesium hydroxide, 99%?

Yes. Every lot of Cesium hydroxide, 99% is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Cesium hydroxide, 99% be shipped internationally?

Yes. Cesium hydroxide, 99% is classified as hazardous (UN 2682), so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.