Item Index Index Index Index
Reagent grade A.R. Reagent grade C.P. Catalyst grade Technical grade
Assay % ≥99 ≥97 ≥99 ≥99
Water insoluble% ≤0.005 ≤0.01 ≤0.005 ≤0.005
Chlorides(Cl) % ≤0.005 ≤0.01 ≤0.005 ≤0.005
Sulphate(SO4)% ≤0.005 ≤0.02 ≤0.005 ≤0.005
Mn% ≤0.005 ≤0.02 ≤0.005 ≤0.01
Fe% ≤0.0005 ≤0.003 ≤0.0005 ≤0.001
Cu% ≤0.002 ≤0.01 —— ——
Ni% ≤0.05 ≤0.5 ≤0.05 ≤0.05
Zn% ≤0.05 ≤0.1 ≤0.05 ≤0.05
Alkali metals and alkaline-earth metals(As sulphates) % ≤0.1 ≤0.5 ≤0.1 ≤0.1
Ammonium(NH4)% ≤0.2 —— ≤0.2 ≤0.2


Packing& Storage

Packing 25kg cardboard drum, lined with double-layer plastic bag
Storage 20℃, 2 years.
Shipping Room temperature in China; may vary elsewhere


General Information

1.1 Chemical & Physical Properties

Common Names  Cobaltous Nitrate | Cobalt nitrate hexahydrate
CAS No. 10026-22-9 Boiling Point (℃)  N/A
Molecular Weight 291.035 Melting Point (℃) 55 °C(lit.)
Appearance Red crystals Vapor Specific Gravity N/A
HS Code 28342920 Flash Point (℃) N/A
Solubility Soluble in water Autoignition Temperature (℃) N/A


1.2 Safety Information

Safety Phrases S17-S36/37-S60-S61-S45-S36/37/39-S26-S22
RIDADR UN 1477 5.1/PG 2
WGK Germany 2
Packaging Group III
Hazard Class 5.1


Inhalation Cough. Sore throat. Use local exhaust or breathing protection. Fresh air, rest.
Skin Redness. Burning sensation. Itching. Protective gloves. Remove contaminated clothes. Rinse and then wash skin with water and soap.
Eyes Redness. Pain. Wear safety goggles. First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.
Ingestion Abdominal pain. Nausea. Vomiting. Do not eat, drink, or smoke during work. Wash hands before eating. Rinse mouth. Induce vomiting (ONLY IN CONSCIOUS PERSONS!). Refer for medical attention .


1.3 Synthetic Route

Nitric acid is added to cobalt hydroxide or cobalt phosphate, and recrystallized after reaction. Or use metal cobalt to react with nitric acid, add cobalt phosphate, adjust the pH value, filter to remove iron hydroxide, and then use nitric acid acidification, evaporation crystallization, can be prepared cobalt nitrate.

Synthesis method: add 30%~32% nitric acid to the acid-resistant reactor with stirring, slowly add metal cobalt particles under stirring for reaction, after the reaction is close to complete, steam is used to heat out nitrogen oxide gas, the solution is sent to the clarifier, cobalt carbonate is added under stirring to adjust the solution to pH 5 or so, kept warm at 80~90 °C for 1 day, filtered while hot to remove iron hydroxide precipitate, the filtrate is acidified to pH >1 with nitric acid, and then evaporated and concentrated to the relative density of the solution 1.6~1.7, and separated by cooling crystallization and centrifugation. Prepared cobalt nitrate finished product …