Coat grade zinc oxide 99.7% has a high refractive index, it has the ability to absorb ultraviolet light, and the coat grade zinc oxide 99.7% has strong tinting power and hiding power. Moreover, coat grade zinc oxide 99.7% is also called zinc white, which is pure white in color and does not chalk. Good resistance to light and heat.
Coat grade zinc oxide 99.7%
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Zinc oxide basic data:
Molecular formula: ZnO
CAS NO: 1314-13-2
EINECS NO: 215-222-5
Density: 5.606g/cm3
Molecular weight: 81.38
Melting point: 1975℃
Boiling Point: 2360ºC
Purity: 0.99
Active substance content: 0.997
Appearance: White powder or crystal
H.S CODE: 2817001000
Coat grade zinc oxide 99.7% use:
Coat grade zinc oxide 99.7% has a high refractive index, it has the ability to absorb ultraviolet light, and the coat grade zinc oxide 99.7% has strong tinting power and hiding power. Moreover, coat grade zinc oxide 99.7% is also called zinc white, which is pure white in color and does not chalk. Good resistance to light and heat.
When coating grade zinc oxide 99.7% is used in coatings, it forms coordination compounds with carboxylate ions, which can reduce the sensitivity to water in the coating film. Due to the above principles, coat grade zinc oxide 99.7% can improve the weather resistance and powder resistance of the coating film Chemical ability, suitable for exterior wall coatings.
Matters needing attention when usingcoat gradezinc oxide 99.7%:
When caot grade zinc oxide 99.7% is used in latex paint, pay attention to the choose the suitable formula, because if the amount is too large, the viscosity of the paint will increase greatly, which will reduce the stability of the paint. To solve this problem, you can choose the right Dispersant, TiO2 variety, base material variety, pH value, original viscosity and PVC, etc. to obtain a stable coating formulation.
MST adopts the French process to produce coat grade zinc oxide 99.7%. Because of its low heavy metal content and large specific surface area, it is used in advanced paints and coatings to meet customer requirements for product quality.
Coat grade zinc oxide 99.7% specification:
Item |
Type1 |
Type2 |
Type3 |
Zinc oxide(以ZnO计)% ≥ |
99.7 |
99.7 |
99.5 |
Metal content(as dry)% ≤ |
none |
none |
0.008 |
Insoluble Matter in Hc % ≤ |
0.006 |
0.008 |
0.03 |
Loss on ignition % ≤ |
0.2 |
0.2 |
0.25 |
Residue on sieve(45um)% ≤ |
0.1 |
0.15 |
0.2 |
Water soluble matter %% ≤ |
0.1 |
0.1 |
0.15 |
Volatile matter in 105℃% ≤ |
0.3 |
0.4 |
0.5 |
Lead(pb)含量% ≤ |
0.008 |
0.05 |
0.1 |
Copper(Cu)含量% ≤ |
0.0002 |
0.0004 |
0.0007 |
Manganese(Mn)含量% ≤ |
0.0001 |
0.0001 |
0.0003 |
Cadmium(Cd)含量% ≤ |
0.002 |
0.005 |
0.01 |
Iron(Fe)含量% ≤ |
0.005 |
0.01 |
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