CAS No.: 29329-71-3 (x-Na), 3794-83-0
(4-Na)
Molecular Formula: C2H2O7P2Na4
Molecular weight: 294
Structural Formula:
Properties:
HEDP•Na4 is the sodium salt of HEDP, it is an excellent calcium carbonate scale inhibitor,
it can be used in low pressure boiler water system,
circulation water system, industrial and municipal cleaning
water system and swimming pool.
Specification:
| items |
index |
| Active acid ％ |
20.3-21.7 |
56 min |
| Active salt %
| 29.0-31.0 |
79.9 min |
| Fe ppm |
20 min |
35 min |
| pH |
10-12(as it) |
11.0-12.0（1％ solution） |
| Density (20℃) g/cm3 |
1.26-1.36 |
— |
Other salt of HEDP:
| Abbr. |
CAS No. |
Mw |
Active acid % |
| HEDP•Na |
29329-71-3 |
228 |
19.0-21.0 |
| HEDP•Na2 |
7417-83-7 |
250 |
16.5 min |
| HEDP.K |
67953-76-8 |
— |
26.0 - 30.0 |
