Total production of iron blue in 1975 was ca. 25,000 t a-1, but in 1995 it was only ca. 15,000 t a-1. A value of 9000 t a-1 was estimated for 2002. The main consumer
Tab. 3.6: Physical and chemical properties of iron blue pigments (Vossen Blau® and Manox® Blue Manox® Blue grades).
Type VOSSEN |
VOSSEN |
VOSSEN |
MANOX® |
MANOX® |
BLAU® |
BLAU® |
BLAU® |
Blue 460 |
EASISPERSE® |
705 |
705 |
724 |
D |
HSB 2 |
LSg) |
||||
Color Index Number 77510 |
77510 |
77510 |
77510 |
77510 |
Color Index Pigment 27 |
27 |
27 |
27 |
27 |
Tinting strengtha) 100 |
100 |
100 |
115 |
95 h) |
pure blue |
pure blue |
pure blue |
pure blue |
pure blue |
Oil absorptionb), 36-42 g/100 g |
40-50 |
36-42 |
53-63 |
22-28 |
Weight loss on 2-6 |
2-6 |
2-6 |
2-6 |
2-6 |
dryingc), % Tamped densityd), 500 |
200 |
500 |
500 |
550 |
g L Densitye), g cm-3 1.9 |
1.9 |
1.9 |
1.8 |
1.8 |
Mean diameter of 70 |
70 |
70 |
40 |
80 |
primary particles, nm Specific surface areaf), 35 m2 g 1 |
35 |
35 |
80 |
30 |
Thermal stability, °C 150 |
150 |
150 |
150 |
150 |
Resistance to acids very good |
very good |
very good |
very good |
very good |
Resistance to alkalines poor |
poor |
poor |
poor |
poor |
Resistance to solvents very good |
very good |
very good |
very good |
very good |
Resistance to bleeding very good |
very good |
very good |
very good |
very good |
a) DIN ISO 787/XVI and DIN ISO 787/XXIV. b) DIN ISO 787/V, ASTM D 281, or JIS K 5101/19 (JIS: Japanese Industrial Standard). c) DIN ISO 787/II, ASTM D 280, or JIS K 5101/21. d) DIN ISO 787/XI or JIS K 5101/18. e) DIN DIN ISO 787/X or JIS K 5101/17. f) DIN 66131. g) LS = Luftstrahlmtihle (air jet mill). h) Surface-treated easily dispersible type.
in Europe and USA is the printing ink industry. The second largest use in Europe, especially of micronized iron blue pigments, is for coloring fungicides. Use in the paint industry is insignificant.
3.6.4.1