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CHROMATES
ZINC CHROMATE CZ20
Zinc Potassium Chromate : 3 ZnCrO4, K2CrO4, Zn(OH)2, 2H2O

Description
CZ20 is a low dust, yellow powder. This is a stable and non-hygroscopic powder with a low tinting strength, it is easily dispersed.
Technical data

 Nominal
Value
Tolerance
(+/-)
Test
method
Bonded water content (%) - 1h at 260°CTyp. 8.0Gravimetry
Moisture content (%) - 1h at 105°CTyp. 1.0ISO 787/2
Water soluble CrO3 (g/L)Typ. 1.0ISO 1249
Fineness HegmanTyp. 5.5ISO 787/5 - ISO 1524
Fineness NorthTyp. 7ISO 787/5 - ISO 1524
D50 (μm)Typ. 2.5Laser granulometry
Specific GravityTyp. 3.5ISO 787/10
Sieve residue - 45 μm (%)0.05maxISO 787/7
Oil absorption (cm3/100g)224ISO 787/5
K2O content (%)12.0maxICP
Zn as ZnO content (%)34.0minICP
Cr as CrO3 content (%)42.0minICP
Recommended shelf life : 5 years
Formulators Guidelines

CZ20 may be used in most binder systems.
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