Zinc Citrate

Synonyms: ...,

CAS Number: 546-46-3,

Molecular Weight: 574.34,

Chemical Formula: C12H10O14Zn3,

EINECS EC Number: 208-901-2,

FEMA: ...

Many nutrition specialists prefer the citrate form of zinc over all other types of zinc compound because this material is known to be readily absorbed. Zinc is important for tissue formation and the proper metabolism of fats, proteins, and carbohydrates. Zinc citrate is offered as a white to almost white powder. It is practically odorless and slightly soluble in water.

Specifications of Commercial Grade Zinc Citrate

Assay (zinc content): 29.6-32.8%
Loss on drying (at 105C for 4 hours): 5.0% max
Sulfate: 400 ppm max
Chloride: 400 ppm max
Lead: 5 ppm max
Cadmium: 5 ppm max
Arsenic: 3 ppm max
pH (3% suspension): 5.7-7.0
Volatile matters: 1% max

We also manufacture and supply:

Zinc Citrate USP Grade

C12H10O14Zn3-2H2O --- 610.36
2-Hydroxy-1,2,3-propanetricarboxylic acid zinc salt, dihydrate --- [5990-32-9]
Anhydrous [546-46-3]
Zinc Citrate contains NLT 31.3% of zinc (Zn), calculated on the dried basis.

A. IDENTIFICATION TESTS—GENERAL, Zinc: A solution (1 in 10) meets the requirements.
B. IDENTIFICATION TESTS—GENERAL, Citrate: A solution (1 in 10) meets the requirements.

CHLORIDE AND SULFATE, Chloride: A 1.0-g portion shows no more chloride than corresponds to 0.7 mL of 0.020 N hydrochloric acid (NMT 0.05%).
CHLORIDE AND SULFATE, Sulfate: A 1.8-g portion shows no more sulfate than corresponds to 0.5 mL of 0.020 N sulfuric acid (NMT 0.05%).
LIMIT OF ARSENIC, CADMIUM, AND LEAD: Arsenic: NMT 3 µg/g, Cadmium: NMT 5 µg/g, Lead: NMT 10 µg/g.
LOSS ON DRYING: Dry a sample at 105C for 2 h: it loses NMT 1.0% of its weight.
Microbial Enumeration Tests: The total aerobic microbial count does not exceed 1000 cfu/g. The total combined yeasts and molds count does not exceed 100 cfu/g.
Microbiological Procedures for Absence of Specified Microorganisms: It meets the requirements of the test for absence of Escherichia coli.
Packaging and Storage: Preserve in well-closed containers.