Items
Index
Appearance
Colorless to light yellow transparent liquid
White powder
Active component ( as HEDP)%
20.3-21.7
≥56.0
Active component (as HEDP•Na4)%
29.0-31.0
≥79.9
Total phosphoric acid (as PO43-) %
18.4-20.4
52.0-54.0
Iron ( as Fe2+ ) μg/g ≤
25
35.0
Dry weight loss % ≤
--
15
density (20℃)g/cm3
1.26-1.36
pH (1% water solution)
11.0-12.0