Does CAS 10026-22-9 specifically identify Cobalt(II) Nitrate Hexahydrate?

Yes. It identifies Co(NO₃)₂·6H₂O, with cobalt in the +2 oxidation state and six waters of crystallization. It is not cobalt(III) nitrate, cobalt nitrite or anhydrous cobalt(II) nitrate. A cobalt nitrate solution also needs its concentration and assay basis specified.

How does cobalt content differ from cobalt nitrate hexahydrate assay?

Cobalt content reports the mass fraction of elemental Co. Hexahydrate assay reports the compound on a stated analytical basis. The theoretical cobalt content of pure Co(NO₃)₂·6H₂O is approximately 20.25%; this calculated value is not a batch guarantee. Trace-metals-basis purity is a third, different reporting basis.

Which tests are useful for cobalt nitrate hexahydrate procurement?

Complexometric titration and suitably calibrated ICP-OES can support cobalt or assay specifications; ICP-OES also measures relevant metal impurities. Water-insoluble matter, chloride and sulfate may be important. Ion chromatography can measure the specified anion impurities when validated for this nitrate-rich matrix. Test methods and reporting limits should match the agreed specification.

Can cobalt chloride or cobalt sulfate replace cobalt nitrate?

They are alternative cobalt sources in some processes, but not automatic substitutes. Their counterions, cobalt mass fractions and hydrate water differ. Chloride or sulfate residues may be unacceptable in a nitrate-based catalyst or precursor route, so any substitution needs process validation.

What should a bulk cobalt nitrate hexahydrate enquiry include?

Start with quantity and destination. Add the required cobalt content or hexahydrate assay and any critical impurity limits, such as nickel, chloride or sulfate. A preferred pack size or delivery date helps us prepare the offer; the quoted specification and SDS define the suitable packaging and handling conditions.

Cobalt(II) Nitrate Hexahydrate CAS 10026-22-9

Cobalt(II) Nitrate Hexahydrate, CAS 10026-22-9, is a water-soluble red crystalline cobalt salt used in catalyst, pigment and inorganic precursor production. Also known as cobaltous nitrate hexahydrate, it is selected by cobalt content or hexahydrate assay, chloride and sulfate limits, and the trace-metal profile required by the process.

CAS: 10026-22-9
Synonyms: Cobalt(II) nitrate hexahydrate; Cobaltous nitrate hexahydrate
Einecs: 233-402-1 (cobalt dinitrate)
Molecular Formula: Co(NO₃)₂·6H₂O
Grade: Industrial grade; assay and impurity limits by agreed specification.
Package: Sealed, lined drums; pack size agreed with the quotation.

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Product Description

1 Cobalt nitrate identity and applications

2 Assay, impurities and analytical methods

3 Documentation and related raw materials

4 Packaging and bulk quotations

Cobalt nitrate identity and applications

The hexahydrate contains cobalt in the +2 oxidation state and six waters of crystallization: Co(NO₃)₂·6H₂O. CAS 10026-22-9 identifies this hydrated form; EC 233-402-1 refers to cobalt dinitrate. Its red to reddish-brown crystals or flakes dissolve in water, allowing cobalt to be introduced into catalyst impregnation, pigment and cobalt-oxide precursor processes. The nitrate counterion and hydrate water both matter when selecting a cobalt feedstock.

Assay, impurities and analytical methods

Cobalt content and hexahydrate assay are different specifications. Pure Co(NO₃)₂·6H₂O contains approximately 20.25% cobalt by mass, calculated from its formula; this is a theoretical value, not a batch result. A hexahydrate assay, elemental cobalt result and purity reported on a trace-metals basis cannot be used interchangeably. Useful quality limits include water-insoluble matter, chloride, sulfate and process-relevant metals such as nickel, iron and copper.

Complexometric titration can determine cobalt and report an assay on the agreed hexahydrate basis. ICP-OES can measure cobalt and metal impurities with suitable sample preparation, calibration and interference control. Neither an elemental cobalt result nor a trace-metal result alone establishes the hydrate form or the full compound purity.

Ion chromatography is relevant when chloride or sulfate impurities must be controlled. The method must be validated for the cobalt-nitrate matrix, including suitable dilution and separation from the large nitrate signal. The report should identify the measured anions, method and reporting limits.

Documentation and related raw materials

We can provide a Certificate of Analysis (COA), Technical Data Sheet (TDS) and Safety Data Sheet (SDS) for the quoted cobalt nitrate hexahydrate specification, together with applicable assay and impurity reports. Where the agreed anion limits require ion chromatography, the supporting report can include the chromatogram, method and reporting limits.

For other soluble cobalt feedstocks, compare cobalt(II) sulfate heptahydrate and cobalt(II) chloride hexahydrate against the counterion and impurity limits accepted by your process. They are not direct mass-for-mass substitutes. Ammonium bicarbonate is a complementary reagent in controlled cobalt-carbonate precipitation routes; citric acid is used as a complexing agent in selected cobalt-oxide precursor routes.

Packaging and bulk quotations

Cobalt nitrate hexahydrate is moisture-sensitive and can liquefy on exposure to sufficient heat or absorbed moisture. Sealed, compatible lined drums help protect the material during storage and transport. Keep this oxidizing salt away from combustible materials and follow the supplied SDS for storage, handling and shipment. Send the required quantity and destination for a quotation; cobalt or hexahydrate assay limits and any critical impurities help us match the specification. Pack size and delivery conditions are included in the offer.

FAQ - Technical & Supply Chain

Q:
Does CAS 10026-22-9 specifically identify Cobalt(II) Nitrate Hexahydrate?

A: Yes. It identifies Co(NO₃)₂·6H₂O, with cobalt in the +2 oxidation state and six waters of crystallization. It is not cobalt(III) nitrate, cobalt nitrite or anhydrous cobalt(II) nitrate. A cobalt nitrate solution also needs its concentration and assay basis specified.
Q:
How does cobalt content differ from cobalt nitrate hexahydrate assay?

A: Cobalt content reports the mass fraction of elemental Co. Hexahydrate assay reports the compound on a stated analytical basis. The theoretical cobalt content of pure Co(NO₃)₂·6H₂O is approximately 20.25%; this calculated value is not a batch guarantee. Trace-metals-basis purity is a third, different reporting basis.
Q:
Which tests are useful for cobalt nitrate hexahydrate procurement?

A: Complexometric titration and suitably calibrated ICP-OES can support cobalt or assay specifications; ICP-OES also measures relevant metal impurities. Water-insoluble matter, chloride and sulfate may be important. Ion chromatography can measure the specified anion impurities when validated for this nitrate-rich matrix. Test methods and reporting limits should match the agreed specification.
Q:
Can cobalt chloride or cobalt sulfate replace cobalt nitrate?

A: They are alternative cobalt sources in some processes, but not automatic substitutes. Their counterions, cobalt mass fractions and hydrate water differ. Chloride or sulfate residues may be unacceptable in a nitrate-based catalyst or precursor route, so any substitution needs process validation.
Q:
What should a bulk cobalt nitrate hexahydrate enquiry include?

A: Start with quantity and destination. Add the required cobalt content or hexahydrate assay and any critical impurity limits, such as nickel, chloride or sulfate. A preferred pack size or delivery date helps us prepare the offer; the quoted specification and SDS define the suitable packaging and handling conditions.

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