DTPA
A Chelating agent that is stronger than EDTA that is often used to lower the effective free metal content of process such as the bleaching of pulp. It is also more stable under oxidizing conditions.
| STRUCTURE AND CHEMICAL NAME |
METACLAW |
CHEMICAL
FORM |
PHYSICAL
FORM |
MOLECULAR
MASS |
DENSITY
(approx.) |
TYPICAL
pH VALUE |
CHELATION EQUIVALENTS
(WEIGHT PARTS CHELATE TO ONE WEIGHT PART METAL) |
| Ca |
Fe |
Mg |
Nitrilotriacetic acid;
NTA-H3
|
DTPA |
DTPA-H5 |
Crystals |
393.4 |
750 |
2 |
10.0 |
7.2 |
16.5 |
| PENTA-CL |
DTPA-Na5 |
Liquid (40%) |
503.3 |
1300 |
11.5 |
31.4 |
22.5 |
51.8 |
| PENTA |
DTPA-Na5 |
Powder |
503.3 |
500 |
11.5 |
14.3 |
10.2 |
23.5 |
|
