Zinc carbonate

Zinc carbonate: mineral salt (zinc, inorganic).

Zinc carbonate testing at Vanguard Laboratory: identity, purity and quantity $250 per sample, with results in 3 to 5 business days.

Structure

Zinc carbonate: 2D structure drawn from the PubChem record (CID 19005).

Compound data

CAS number

5263-02-5

Formula

3Zn(OH)₂ · 2ZnCO₃

Molecular weight

548.96 g/mol

Type

Mineral salt (zinc, inorganic)

Structure and names

Identity: Zinc carbonate (basic)

IUPAC name: zinc carbonate

How Vanguard tests Zinc carbonate

Method for the $250 identity, purity and quantity test: ICP-MS metal content, against a reference standard, with results in 3 to 5 business days.

The USP monograph covers identity by a zinc test and ion chromatography retention time, assay by ion chromatography, chloride, sulfate, iron and lead limits, and insoluble matter and other residues by gravimetry. Full testing to the USP Zinc Carbonate monograph is available and quoted.

What's reported

Metal content by ICP-MS, against the label or specification
Purity, as percent of total peak area
Quantity, against the label claim
Identity, reported as match or no match against the reference standard
With monograph testing (quoted): the monograph’s tests against its limits

Tests and prices

Purity and quantity

$250

Chromatographic purity and mg per unit by the method matched to the compound, identity against a reference standard. 1 unit.

Raw powder purity

$200

Chromatographic purity on bulk powder. 50 mg.

Add-on tests

Add-on test	Price
Identity and impurities
FTIR identity	$90
CHNS elemental analysis (carbon, hydrogen, nitrogen, sulfur)	$125
Chiral purity (where a chiral method exists; new methods quoted)	$250
Water, solvents and salt form
Water content by Karl Fischer	$60
Residual solvents	$150
Counterions: chloride, acetate and TFA	$70
Assay
Assay, % w/w (with raw powder purity; $250 together)	+$50
Metals and conformity
Heavy metals: arsenic, cadmium, chromium, mercury and lead	$150
Conformity: purity and quantity on more units from the same lot	$100 per extra unit
Microbiology (injectables)
Endotoxin	$210
Sterility or bioburden	$150
Container closure integrity (CCI)	$50
Screening
Fentanyl screen	$50

10% off for 10 or more samples.

Need something else? Other tests are available on request.

Sample amount and turnaround

Purity and quantity is $250 per sample (1 unit) and raw powder purity is $200 for 50 mg, with results in 3 to 5 business days. Send the material sealed and labeled, with the label claim and the form it contains.

Salts, forms and compendial references

Zinc Carbonate (CAS 5263-02-5)
Tell us the salt or form the label states, so quantity is reported on the same basis.

Questions about Zinc carbonate testing

Is the $250 test the same as USP monograph testing?

No. The $250 test covers identity, purity and quantity by ICP-MS for zinc. Full testing to the USP Zinc Carbonate monograph is available and quoted.

Why is zinc carbonate content stated as zinc oxide?

Basic zinc carbonate is a mixed hydroxide and carbonate with variable composition, so the USP states its content as zinc oxide equivalent. ICP-MS measures zinc, which converts to that basis.

Is zinc carbonate the same as zinc oxide?

No. Zinc carbonate turns into zinc oxide when heated, but as received it contains carbonate and hydroxide, so its zinc per gram is lower.

Sources

https://pubchem.ncbi.nlm.nih.gov/compound/19005

Identity facts from the USP monograph header for this compound.

Order

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