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About zinc oxide

Main Traits and Characteristics of French Process Zinc Oxide

· French Process Zinc Oxide is a white, odorless powder possessing high brightness, a high refractive index and a relatively fine particle size.
· Zinc Oxide is insoluble in water, solvents and neutral oils, but is soluble in both strong acids and alkalis.
· Zinc oxide has chemical properties which impede the growth of fungi, mildew and mold.
 
Zinc Oxide grades are primarily differentiated by purity levels and surface area. The grades listed below can be propionic acid treated for aided dispersion and can be granulated for reduced dusting and improved flow characteristics.

Standard packaging includes 25 kg. bags and bulk bags in various weights and sizes, custom weight polyethylene bags and bulk pneumatic truck delivery. We can accommodate virtually any special packaging needs.
 

Rubber and Plastic Compounds

· Zinc oxide is used in rubber and latex compounds as an activator in the curing and vulcanization process.
· Zinc oxide is used as a reinforcing agent adding durability and abrasion resistance to compounds.
· Zinc oxide aids in protecting rubber and plastics (especially outdoor weathering polypropylenes) from harmful UV rays.
· Zinc oxide imparts heat resistance properties to various types of rubber and plastics compounds.
 
Standard: GB/T3185-92
 
Item Index
Model Top garde First grade Qualified product
Zinc oxide(as Zno)%,≥ 99.70 99.50 99.40
Metals (as Zn)%,≤ 0.008
Lead oxide(as Pb)%,≤ 0.037 0.05 0.14
manganese(as Mn)%,≤ 0.0001 0.0001 0.0003
Copper oxide(as Cu)%,≤ 0.0002 0.0004 0.0007
Insoluble matter in HCI%,≤ 0.006 0.008 0.05
Loss on ignition%≤ 0.2 0.2 0.2
Residue on sieve(45um)%,≤ 0.10 0.15 0.20
Water soluble matter%,≤ 0.10 0.10 0.15
Volatile matter on 105℃%,≤ 0.3 0.4 0.5
 
 
 
 
 

Zinc oxide for soft magnetic ferrites

Uses: Mainly used in the electronics industry to manufacture deflection magnetic core or other zinc magnesium ferrite magnetic cores.
Standard: HG/T2384-1997
Item Index
Model Top garde Qualified product
Zinc oxide(as Zno)%,≥ 99.75 99.65
Water soluble matter%,≤ 0.1 0.1
Insoluble matter in HCI%,≤ 0.005 0.008
Metals zinc (as Zn)%,≤ No 0.01
Loss on ignition%≤ 0.2 0.2
Chloride (as Cl) 0.005 -
Pb%,≤ 0.03 0.04
Mn%,≤ 0.0001 0.0002
Cu%,≤ 0.0002 0.0004
Cd%,≤ 0.005 0.03
Ni%,≤ 0.1 -
Volatile matter on 105℃%,≤ 0.2 0.4
Apparent density Compactness g/ml 0.8-1.0 0.8-1.0
Bulk density g/ml 0.4-0.5 0.4-0.5
Residue on sieve(45um experimental sieve)%,≤ 0.05 0.15
 

Zinc oxide for arrester purpose

Uses: In the electronics industry, Zinc oxide for arrester purpose is mainly used to manufacture the magnetic elements of electronic structure-Ferrite, moreover, TV radio, telecommunications installations and rheostat all adopts such magnetic materials.
Standard: JB/T9670-1999
 
Item Index
Zinc oxide(as Zno)%,≥ 99.7
Potassium oxide(as K)%,≥ 0.0010
Sodium oxide(as Na)%,≥ 0.0010
Ferric oxide(as Fe)%,≥ 0.0020
Cadmium oxide(as Cd)%,≥ 0.0050
Lead oxide(as Pb)%,≥ 0.037
Copper oxide(as Cu)%,≥ 0.0002
Metal oxide(as Zn)%,≥ No
Moisture%,≥ 0.3
Insoluble matter in HCI%,≤ 0.006
Loss on ignition%≤ 0.2
PH value 7.0-8.0
Average size(um) ,≤ 0.50
Residue on sieve%,≤ 0.10

Specialty Chemicals

· Zinc dispersions are used as ingredients in the vulcanizing of rubber.
· Zinc salts are used in the production of plastics.
· Zinc borate and zinc chlorides are used in flame-retardants.
· Zinc diacrylate is a key ingredient in the manufacturing of golf balls.
· Anti-corrosion materials such as zinc chromate and anti-wear additives such as zinc dithiophosphates for the lubricant industry are manufactured using zinc oxide.
· Zinc oxide can be dissolved in phosphoric acid for use in the coating and metal priming industry and in sulfuric acid for electroplating.
 
Standard:
 
Item Index
Model Top garde First grade Qualified product
Zinc oxide(as Zno)%,≥ 99.70 99.50 99.40
Metals (as Zn)%,≤ 0.008
Lead oxide(as Pb)%,≤ 0.037 0.05 0.14
manganese(as Mn)%,≤ 0.0001 0.0001 0.0003
Copper oxide(as Cu)%,≤ 0.0002 0.0004 0.0007
Insoluble matter in HCI%,≤ 0.006 0.008 0.05
Loss on ignition%≤ 0.2 0.2 0.2
Residue on sieve(45um)%,≤ 0.10 0.15 0.20
Water soluble matter%,≤ 0.10 0.10 0.15
Volatile matter on 105℃%,≤ 0.3 0.4 0.5
 
 
 
 

Ceramics and Glass

· Zinc oxide is used to manufacture glazes and acts as an opacifier or whitener. Its low coefficient of thermal expansion improves resistance to thermal and mechanical shock, most notably in glass.
· In the frit industry, zinc oxide enhances color and clarity.
· Zinc oxide's high refractive index makes it an excellent raw
material for manufacturing optical glass.
· The varistor and ferrite industries use zinc oxide to manufacture ceramic
components which protect against lightning and voltage surges
 
Standard:
Item Index
Model Top garde First grade
Zinc oxide(as Zno)%,≥ 99.70 99.50
Metals (as Zn)%,≤
Lead oxide(as Pb)%,≤ 0.037 0.05
Ferric(as Fe)%,≤ 0.01 0.03
Insoluble matter in HCI%,≤ 0.02 0.05
Loss on ignition%≤ 0.20 0.20
Volatile matter on 105℃%,≤ 0.30 0.30
 
 
 

Paints and Coatings

· Zinc oxide is used in both water and solvent based formulations. It can be used as a pigment as well as an excellent brightener.
· Zinc oxide is an additive which absorbs UV rays to extend color retention.
· Finally zinc oxide is an excellent inhibitor of fungi, mildew and mold.
 
Standard
Item Index
Model Top garde First grade Qualified product
Zinc oxide(as Zno)%,≥ 99.70 99.50 99.40
Metals (as Zn)%,≤ 0.008
Lead oxide(as Pb)%,≤ 0.037 0.05 0.14
Residue on sieve(45um)%,≤ 0.10 0.15 0.20
Volatile matter on 105℃%,≤ 0.3 0.4 0.5
Water soluble matter%,≤ 0.10 0.10 0.15
Oil absorption g/mg 14 14 14
Color (compared with the standard sample) Similar Slight yellow Slight yellow
Reducing power(compare with the standard samples) ≥ 100 95 90
 
 

Pharmaceuticals

· USP Zinc Oxide is used in the production of lotions, sunscreens, and diaper rash prevention creams.
· Cosmetic manufacturers use zinc oxide as a UV absorber.
· Zinc oxide is used by manufacturers of dietary supplements (essential for the human body) and is also used to manufacture zinc gluconate, now found in cold prevention lozenges.
 
 
Standard:
Item Index
Zinc oxide(as Zno)%,≥ 99.8
Metal zinc (as Zn) %,≥ No
Lead oxide(as Pb)%,≥ 0.003
Potassium oxide(as K)%,≥ 0.0010
Sodium oxide(as Na)%,≥ 0.0010
Ferric oxide(as Fe)%,≥ 0.0020
Cadmium oxide(as Cd)%,≥ 0.0050
Lead oxide(as Pb)%,≥ 0.037
Copper oxide(as Cu)%,≥ 0.0002
Metal oxide(as Zn)%,≥ No
Moisture%,≥ 0.3
Insoluble matter in HCI%,≤ 0.006
Loss on ignition%≤ 0.2
PH value 7.0-8.0
Average size(um) ,≤ 0.50
Residue on sieve%,≤ 0.10
 
 

Animal Feed & Agricultural Fertilizers

· Zinc oxide is an essential micronutrient used in feed mixes and promotes proper growth in animals.
· Zinc oxide is used in the manufacturing of soil fertilizers.
· Zinc supplements have been shown to increase crop yields and can play a role in enzyme systems to regulate plant growth.
Quality standard of feed grade zinc oxide
Item Index
Zinc oxide(as Zno)%,≥ 99.7 95
Zinc oxide (as Zn)%, ≥ 80.1 76.3
Pb %,≤ 0.005 0.005
Cd %,≤ 0.001 0.001
As%,≤ 0.001 0.001
Fineness(pass 150um experimental sieve) %,≥ 99 95
 
 
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