ZINC OXIDE
We invite you to check the enclosed Technical Data Sheet and thus verify the very special characteristics of our Gold Seal Zinc Oxide.
By the French indirect reduction process and using only Special High Grade Zinc from the Peruvian refineries, we produce a type of Zinc Oxide, internationally classified as “Pharmaceutical Grade” or “Gold Seal”.
A typical chemical analysis will show a purity of 99.9%. In fact, we are particularly proud of the quality of our Gold Seal Zinc Oxide: due to its high purity, very small particle size, specific area, and other characteristics, it is already considered among the best pharmaceutical grade zinc oxides available in the world market.
Certification in Good Manufacturing and Management Practices
TECHNICAL SHEET
Gold seal zinc oxide- usp
1. Chemical Analysis
ELEMENTS
TYPICAL (%)
GUARANTEED (%)
ZnO
99,9
99,9 min
Total impurities
0,09
0,1 max
Pb (including PbO)
0,0006 – 0,0016
0,0020 max
Cu
< 0,0001 – 0,0001
0,0002 max
Cd
0,0002 – 0,0006
0,0010 max
Fe
0,0001 – 0,0002
0,0005 max
Cl
0,0003 – 0,0004
0,0005 max
S
0,0001 – 0,0002
0,0007 max
Mn
< 0,0001
0,0001 max
As
< 0,0001
0,0001 max
Ni
< 0,0001
0,0001 max
2. Physical Properties
DESCRIPTION
TYPICAL
GUARANTEED
pH
7,4
7,3 – 7,5
Volatile materials %
0,10 – 0,16
0,2 max
Ignition loss %
0,02 – 0,2
0,2 max
Water soluble elements %
0,05 – 0,09
0,10 max
Solubility in HCl %
99,9
99,9 min
Specific weight g/cm3
5,6
5,6
Moisture %
0,07 – 0,14
0,2 max
Surface area BET method m2 /g
3,7 – 6,0
3,5 – 7
Mesh 325 % through
99,98
99,9 min
3. Packaging
- 25 kg paper or polypropylene bags
- Polypropylene big bags of 500 kg, 1000 kg and 1100 kg (Other weights could be studied upon customer’s request).
- Bags are arranged on wooden pallets which comply with ISPM norm Nº 15, wrapped with stretch film.
4. Shelf-life and storage conditions
- Zinc oxide has a shelf-life of at least 03 years from date of manufacture
- The product maintains its optimal characteristics, under appropriate storage conditions, that is: indoors, in a ventilated environment and maintaining the original packing closed.