Cesium formate
- CAS No.
- 3495-36-1
- Chemical Name:
- Cesium formate
- Synonyms
- caesium formate;Cesium format;CESIUM FORMATE;CAESIUMFUMARATE;Formic acid cesium;AVO Cesium Formate;FORMIC ACID CESIUM SALT;CESIUM FORMATE 1-HYDRATE;Cesium Formate (80% Sol.);CESIUM FORMATE, MONOHYDRATE
- CBNumber:
- CB9696622
- Molecular Formula:
- CH3CsO2
- Molecular Weight:
- 179.94
- MDL Number:
- MFCD00039103
- MOL File:
- 3495-36-1.mol
- MSDS File:
- SDS
- TDS File:
- TDS
| Melting point | 50°C |
|---|---|
| Density | 1.017 [CRC10] |
| vapor pressure | 4.66hPa at 19.85℃ |
| solubility | very soluble in H2O |
| form | Crystalline Powder |
| pka | 3.74[at 20 ℃] |
| color | White |
| Water Solubility | very soluble H2O [CRC10] |
| Hydrolytic Sensitivity | 0: forms stable aqueous solutions |
| Sensitive | Hygroscopic |
| BRN | 3912426 |
| InChI | InChI=1S/CH2O2.Cs.H/c2-1-3;;/h1H,(H,2,3);; |
| InChIKey | KFKUTOIEAHFKHG-UHFFFAOYSA-N |
| SMILES | C(=O)O.[CsH] |
| LogP | -2.2 at 25℃ |
| CAS DataBase Reference | 3495-36-1(CAS DataBase Reference) |
| EPA Substance Registry System | Formic acid, cesium salt (3495-36-1) |
| UNSPSC Code | 12352302 |
| NACRES | NA.23 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |   GHS07,GHS08 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H302-H319-H371-H373 | |||||||||
| Precautionary statements | P301+P312+P330-P305+P351+P338-P308+P311 | |||||||||
| target organs | Nervous system, Nervous system,Blood | |||||||||
| PPE | dust mask type N95 (US), Eyeshields, Gloves | |||||||||
| Hazard Codes | Xi,Xn | |||||||||
| Risk Statements | 36/37/38-68/22-48/22-36-22 | |||||||||
| Safety Statements | 22-24/25-36/37/39-26-36/37 | |||||||||
| WGK Germany | 3 | |||||||||
| F | 3-10 | |||||||||
| TSCA | TSCA listed | |||||||||
| Storage Class | 13 - Non Combustible Solids | |||||||||
| Hazard Classifications | Acute Tox. 4 Oral Eye Irrit. 2 STOT RE 2 Oral STOT SE 2 Oral |
|||||||||
| REACH Registrations | Active | |||||||||
| NFPA 704 |
|
Cesium formate price More Price(28)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 433764 | Cesium formate 98% | 3495-36-1 | 25g | $63.7 | 2026-04-30 | Buy |
| Usbiological | 270193 | Cesium formate Asreported | 3495-36-1 | 100g | $333 | 2026-06-03 | Buy |
| Usbiological | 270193 | Cesium formate Asreported | 3495-36-1 | 250g | $502 | 2026-06-03 | Buy |
| Usbiological | 270193 | Cesium formate Asreported | 3495-36-1 | 500g | $686 | 2026-06-03 | Buy |
| Usbiological | 270193 | Cesium formate Asreported | 3495-36-1 | 1kg | $932 | 2026-06-03 | Buy |
Cesium formate Chemical Properties, Uses, Production
Chemical Properties
white crystal(s) [CRC10]
Definition
ChEBI: Caesium formate is the organic caesium salt of formic acid. It contains a formate.
References
[1] Liangliang Deng. “Stabilizing Bottom Side of Perovskite via Preburying Cesium Formate toward Efficient and Stable Solar Cells.” Advanced Functional Materials 33 43 (2023).
[2] Fung Fuh Wong . “An efficient and convenient transformation of α-haloketones to α-hydroxyketones using cesium formate.” Journal of Organometallic Chemistry 694 21 (2009): Pages 3452-3455.
[3] Guo, Qiang et al. “Multiple-cation wide-bandgap perovskite solar cells grown using cesium formate as the Cs precursor with high efficiency under sunlight and indoor illumination.” Physical Chemistry Chemical Physics 29 (2022): 17526–17534.
Uses
Cesium formate could be used as a weighting agent of a novel drilling and completing fluid base fluid has excellent performance. This compound has a great potential for use as sealing and packing liquids as densities up to 2.3 SG can be achieved. Cesium formate is also used, for example, as a substitute for the highly toxic and corrosive zinc bromide salt solution. In addition, preburying cesium formate (CsFo) into the SnO2 electron transport layer (ETL) could stabilize the bottom side. The synergistic effect of cesium cation (Cs+) and formate anion (HCOO) causes strain relaxation, void elimination, and defect reduction, which further facilitate charge extraction. In the presence of cesium formate in dry MeOH solution, α-halo ketones underwent a direct conversion reaction to afford α-hydroxy ketone in excellent yields. Introducing cesium formate (CsFa) as the Cs precursor COULD fabricate efficient WBG PSCs[1-3].
Cesium formate Preparation Products And Raw materials
Raw materials
Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Hubei Enxing Biotechnology Co., Ltd | 16621771607 | 2457984128@qq.com | China | 491 | 58 |
| Shaanxi Dideu Medichem Co. Ltd | 029-81024372 17792795018 | 1053@dideu.com | China | 9999 | 58 |
| Shanghai Alunt New Energy Materials Co., Ltd. | 17361648915 | 2419085585@qq.com | China | 12 | 58 |
| Ningbo chemical raw materials co., ltd. | 13306607903;13306607903 | 2501739421@qq.com | China | 334 | 58 |
| Tianjin Zhongxin Chemtech Co., Ltd. | 022-66880623 | sales@tjzxchem.com | China | 612 | 60 |
| Meryer (Shanghai) Chemical Technology Co., Ltd. | 4006356688 18621169109 | market03@meryer.com | China | 40202 | 62 |
| Alfa Aesar | 400-6106006 | saleschina@alfa-asia.com | China | 30103 | 84 |
| Beijing HwrkChemical Technology Co., Ltd | 89508211 18501085097 | sales.bj@hwrkchemical.com | China | 9407 | 55 |
| Energy Chemical | 400-0056266 | sales8178@energy-chemical.com | China | 44850 | 61 |
| Shandong Xiya Chemical Co., Ltd | 13355009207 13355009207 | 3007715519@qq.com | China | 18722 | 57 |
View Latest Price from Cesium formate manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2026-09-17 | Cesium formate
3495-36-1
|
1kg/Bag | ≥98% | 50 T/Month | Hebei Qujie Technology Co., Ltd. | ||
 |
2026-08-07 | Cesium formate
3495-36-1
|
$1.00-4.00 | 1KG | 99% | 200000KG | Shaanxi Dideu Medichem Co. Ltd | |
 |
2026-06-30 | Cesium formate
3495-36-1
|
1kg | 98% | 1000kg | Shaanxi Dideu New Materials Co. Ltd |
-
- Cesium formate
3495-36-1
- $0.00
- ≥98%
- Hebei Qujie Technology Co., Ltd.
-
- Cesium formate
3495-36-1
- $1.00-4.00
- 99%
- Shaanxi Dideu Medichem Co. Ltd
-
- Cesium formate
3495-36-1
- $0.00
- 98%
- Shaanxi Dideu New Materials Co. Ltd
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