ZINC TETRAOXYCHROMATE TC20

ZINC TETRAHYDROXYDE CHROMATE ZnCrO4, 4 Zn(OH)2

DESCRIPTION

TC20 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 VALUETOLERANCE (+/-)​TEST METHOD
Cr as CrO3 content (%)16.0minICP
Zn as ZnO content (%)68.5minICP
Oil absorption (cm3/100g)355ISO 787-5
Sieve residue - 45 microns (%)0.05maxISO 787-7
Density (g/mL)Typ. 3.8ISO 8130-2
D50 (μm)Typ. 5ISO 13320
Fineness HegmanTyp. 5.5ISO 787-5
ISO 1524
Water soluble CrO3 (g/L)Typ. 0.15ISO 1249
Moisture content (%) - 1h at 105°CTyp. 1.0ISO 787-2
Bonded water content (%) - 1h at 320°C Typ. 10Gravimetry
RECOMMENDED SHELF LIFE : 5 YEARS

FORMULATORS GUIDELINES

TC20 is recommended for use in all sorts of temporary protection systems. It is particularly recommended for shop primers and wash primers designed for steel and aluminium protection.

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