Name | Cesium formate |
Synonyms | Cesium formate CESIUM FORMATE CAESIUMFUMARATE caesium formate Cesiumformatehydrate FORMIC ACID CESIUM SALT Cesiumformatemonohydrate CESIUM FORMATE 1-HYDRATE CESIUM FORMATE, MONOHYDRATE CESIUM FORMATE SOLUTION HIGH DENSITY |
CAS | 3495-36-1 |
EINECS | 222-492-8 |
InChI | InChI=1/CH2O2.Cs/c2-1-3;/h1H,(H,2,3);/q;+1/p-1 |
Molecular Formula | CHCsO2 |
Molar Mass | 177.92 |
Density | 1.017 [CRC10] |
Melting Point | 50°C |
Boling Point | 100.6°C at 760 mmHg |
Flash Point | 29.9°C |
Water Solubility | very soluble H2O [CRC10] |
Vapor Presure | 4.66hPa at 19.85℃ |
Appearance | Crystalline Powder |
Color | White |
BRN | 3912426 |
pKa | 3.74[at 20 ℃] |
Storage Condition | Room Temprature |
Sensitive | 0: forms stable aqueous solutions |
MDL | MFCD00039103 |
Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R68/22 - R48/22 - Harmful danger of serious damage to health by prolonged exposure if swallowed. R36 - Irritating to the eyes R22 - Harmful if swallowed |
Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37 - Wear suitable protective clothing and gloves. |
WGK Germany | 3 |
FLUKA BRAND F CODES | 3-10 |
TSCA | Yes |
LogP | -2.2 at 25℃ |
EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
Introduction | Cesium formate is a prismatic crystal. It is soluble in hot water. Cesium oxalate can be generated when heated to 400 ℃ in water. Preparation method: When there is a small amount of water, CO2 is applied to CsH (when there is no water at all, it must be heated to 54°C before the reaction can be carried out), or refined cesium carbonate is used to react with formic acid, and sodium carbonate is used. Cesium carbonate reacts with formic acid to obtain formate, remove the excess formic acid by recrystallization, and crystallize from ethanol with ether. |
Use | Cesium formate solution (such as cesium formate brine) is a high-density, low-viscosity clear brine, which is used in wells and reservoirs The drilling fluid, completion fluid, intervention fluid and suspension fluid in the oil and gas field collection operation are quite useful. Cesium formate is quite useful in HPHT (high pressure and high temperature) drilling locations. |
solubility in water (g/100ml) | dissolution grams per 100ml of water at different temperatures (℃): 335g/0 ℃;381g/10 ℃;450g/20 ℃;694g/30 ℃ |