Zinc acetate

Zinc acetate: mineral salt (zinc).

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

Structure

Zinc acetate: 2D structure drawn from the PubChem record (CID 24212194).

Compound data

CAS number

5970-45-6

Formula

C₄H₆O₄Zn · 2H₂O

Molecular weight

219.50 g/mol

Type

Mineral salt (zinc)

Structure and names

Identity: Zinc acetate dihydrate

IUPAC name: acetic acid;zinc;hydrate

How Vanguard tests Zinc acetate

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

The USP monograph covers identity by ion chromatography retention time and an acetate test, assay by ion chromatography, chloride, sulfate, arsenic and lead limits, alkalies and alkaline earths, insoluble matter, and pH. Full testing to the USP Zinc Acetate 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 Acetate (dihydrate CAS 5970-45-6; anhydrous CAS 557-34-6)
Tell us the salt or form the label states, so quantity is reported on the same basis.

Questions about Zinc acetate 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 and HPLC for the acetate. Full testing to the USP Zinc Acetate monograph is available and quoted.

Is my zinc acetate the dihydrate or anhydrous?

Zinc acetate is usually sold as the dihydrate, which has less zinc per gram than the anhydrous salt. Results are converted using the labeled form.

Does zinc acetate change on storage?

It can slowly lose water and acetic acid, which raises the zinc content per gram. Samples should be kept sealed.

Sources

https://pubchem.ncbi.nlm.nih.gov/compound/24212194

Identity facts from the USP monograph header for this compound.

Order

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