Zinc
Zinc Ascorbate
Description:
Complies
Solubility:
Complies
Identification:
Complies
Loss on Drying (at 105°C till constant weight):
1.25% w/w
pH of a 2% w/v Solution:
5.10
Heavy Metals:
< 50 ppm
Arsenic:
< 2 ppm
Lead:
< 20 ppm
Content of Zinc (On Dried Basis):
13.7% w/w
Content of Ascorbic Acid (On Dried Basis):
81.9% w/w
Total Aerobic Microbial Count:
Complies
Total Combined Yeasts & Mold:
Complies
Zinc Enriched Yeast
Appearance:
Yellowish to yellow-brown powder
Identification:
Inactivity, Characteristic odor of yeast; no external obvious impurity
Moisture, %:
< 6.0
Protein, %:
> 45.0
Zn, mg/kg:
> 20000
As, mg/kg:
< 1.0
Pb, mg/kg:
< 1.0
Total Plate Count, cfu/g:
< 10000
Coliform, MPN/100g:
< 30
Pathogen:
Negative
Zinc Gluconate
Description:
White granules or powder
pH:
5.5~7.5
Water:
<11.6%
Chloride:
<0.05%
Sulfate:
<0.05%
Arsenic:
< 3 ppm
Reducing substances:
<1.0 %
Cadmium:
<5 ppm
Lead:
<0.001%
Organic Volatile Impurities:
Meet the requirement
Assay(calcd. on the anhydrous basis):
97.0~102.0%
Zinc Picolinate
Appearance:
Powder
Color:
White to Off-White
Odor:
Characteristic
Taste:
Typical
Identification (FTIR):
Passes
Moisture:
≤ 8.0%
Assay (Flame AA):
Not less than 20.0%
Heavy Metals:
≤ 10 ppm
Lead:
≤ 1 ppm
Total Plate Count:
≤ 3,000/g
E. Coli:
Negative
Salmonella:
Negative
Yeast & Mold:
≤ 300/g
Zinc-8-Hydroxyquinolate
Appearance:
Lemon yellow crystal powder
Assay:
≥98.5%
Melting Point:
≥297 0C
Moisture:
≤0.5%
Free Zinc:
≤0.2%
