Cobalt nitrate
CAS 10141-05-6
EC 233-402-1
Formula Co.2HNO3
MW 182.94 g/mol
Salts & Minerals Agriculture & Feed Catalysis
Description
Cobalt nitrate (CAS 10141-05-6, EC 233-402-1) is an inorganic cobalt salt also referenced as cobalt dinitrate, cobaltous nitrate, and Co(NO3)2. It carries no assigned E-code and is not classified as a food additive. The substance is registered under REACH and subject to cobalt compound regulations across EU member states.
In agriculture, cobalt nitrate serves as a micronutrient source in fertiliser formulations, where cobalt supports nitrogen fixation in legume root nodules by enabling rhizobial enzyme activity. It also functions as a catalyst precursor in chemical synthesis, where thermal decomposition of the nitrate salt generates cobalt oxide active phases used in oxidation and hydrogenation reactions.
This material is supplied as red deliquescent crystals in technical and reagent grades, compliant with REACH registration requirements. Standard packaging includes moisture-resistant drums and intermediate bulk containers suited to the compound's hygroscopic character. Buyers should confirm purity specifications and SDS documentation prior to procurement.
In agriculture, cobalt nitrate serves as a micronutrient source in fertiliser formulations, where cobalt supports nitrogen fixation in legume root nodules by enabling rhizobial enzyme activity. It also functions as a catalyst precursor in chemical synthesis, where thermal decomposition of the nitrate salt generates cobalt oxide active phases used in oxidation and hydrogenation reactions.
This material is supplied as red deliquescent crystals in technical and reagent grades, compliant with REACH registration requirements. Standard packaging includes moisture-resistant drums and intermediate bulk containers suited to the compound's hygroscopic character. Buyers should confirm purity specifications and SDS documentation prior to procurement.
Physical Properties
| Melting Point | 100-105 °C (decomp) |
| Boiling Point | 2900 °C(lit.) |
| Density | 2.49 g/cm³ |
| Flash Point | 4°C (Toluene) |
| Appearance | Red crystals. Deliquescent in moist air. Soluble in most organic solvents. |
| Color | pale |
| Form | wire |
| Water Solubility | g/100g solution H2O: 45.66 (0°), 50.5 ± 0.2 (25°C), 77.21 (91°C); solid phase, Co(NO3)2 ·6H2O (0°C, 25°C), Co(NO3)2 · 3H2O (91°C) [KRU93] |
| Vapor Pressure | 0Pa at 20℃ |
| pH | 4.8 (20°C in H2O) |
Safety & Handling (Learn More)
Danger GHS08 GHS09 GHS03 GHS05 GHS07
H
H272H302H314H317H318H334H335H341H350H351H360H371H372H373H400H410H411
P
P203P210P220P233P260P261P264P270P271P272P273P280P284P316P317P318P319P321P330P363P391P403P405P501P264+P265P301+P317P302+P352P304+P340P308+P316P333+P317P342+P316P362+P364P370+P378P403+P233P301+P330+P331P302+P361+P354P305+P354+P338
Trade & Regulatory
| HS Code | 28342910 |
| UN Number | 3264 |
| ADR Class | 8 |
| Packing Group | III |
| Storage Class | 6.1D - Non-combustible, acute toxic Cat.3 toxic hazardous materials or hazardous materials causing chronic effects |
| WGK (Germany) | 3 |
Other Names
Cobalt(II) nitratecobalt(2+) dinitrateCo(NO3)2cobaltous nitrate3N5COBALTCobalt dinitrate
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