Description
It is a blending product, with both properties of Iron Oxide Red and black and Yellow, but it has more fargoing color and better applicability. Compared with Iron Oxide Red and Yellow, it is used more widely and meet with the requirement of customers better. -The largest production of inorganic brown pigment is iron oxide brown. Iron oxide brown can be produced in a direct precipitation oxidation method . However, iron oxide brown is usually produced with the blending of iron oxide yellow, iron oxide red and iron oxide black, so the chemical formula of iron oxide brown is usually showed as (FeO)x(Fe2O3)y(H2O)z .
-The oil absorption is between 26%-28%, relative density is 4.70 g/cm3, and has good tinting strength, light resistance and weathering resistance. Because contain iron oxide yellow, heat resistance is not good.
-Production process is mainly on the basis of blending, color pigments are blended evenly according to the proportion by color matching machine, and adjust the color difference according to the chroma of standard sample. Some varieties are also allowed to add 5% or less carbon black to improve the tinting strength.
Technical Data
|
Tint Strength %
(compare with standard) | Color
(compare with standard) | Fe2O3 | Volatile
%
at 105 ºC | Soluble matter in water % | Ramainders of sifting %
≤(320mesh) | Oil absorption g/100g | PH |
| 98%-102% | Similar | ≥88% | ≤1% | ≤0.5% | ≤0.3% | 20-30 | 4-7 |
| ISO787-24 | △E-ISO787-1 | ISO1248 | DIN55913 | ISO787-3 | ISO787-7 | ISO787-5 | ISO787-9 |
Complaint
