Synonyms: HEDP Tetrasodium; Tetrasodium etidronate
Appearance White powder/Colorless Liquid
Package: 25kg Paper barrel ; 25kg/bag
Assay: 80%min
Capacity: 5000MT/year
Sample: Available
HEDP 4Na CAS 3794-83-0
Description
HEDP 4Na Quick Details
Chemical Name: HEDP 4Na
Other Name: HEDP Na4, (1-Hydroxyethylidene)bis-phosphonic acid tetrasodium salt
CAS No.: 3794-83-0
Molecular Fomula: C2H4Na4O7P2
Chemical Structure:
Molecular weight: 293.96
Appearance: White powder/Colorless Liquid
HEDP 4Na (Powder) Typical Properties
| Item | Specification |
| Appearance | White powder |
| Active Content (as HEDP)% | 56.0MIN |
| Active Content (as HEDP 4na)% | 80MIN |
| Total phosphoric acid (as PO43-)% | 52MIN |
| PH(1% water solution) | 11~12 |
| Iron ppm | 20MAX |
| Dry Weigh loss (Moisture)% | 15MAX |
HEDP 4Na (Liquid) Typical Properties
| Item | Specifications |
| Appearance | Colorless or pale yellow transparent liquid |
| Active Content (as HEDP)% | 20.3-21.7 |
| Active Content
(as HEDP.Na4)% |
29.0-31.0 |
| pH | 10.0- 12.0 |
| Iron, ppm | 20 max |
| Density @20℃ , g/cm3 | 1.26- 1.36 |
HEDP 4Na Usage
Can be complexed with a variety of metal ions.
Used as scale inhibitor in cooling water and boiler water treatment. Good heat resistance. It still has a good effect at 200℃.
Can also be used as corrosion inhibitor, cyanide-free plating additive.
HEDP 4Na (Powder) Shelf Life, Package and Delivery
Shelf life: 12 months from date of manufacture in original unopened packaging stored in a cool
Storage: dry place out of direct sunlight.
Package: 25 bag or drum.
Delivery as hazard 8 product.
HEDP 4Na (Liquid) Shelf Life, Package and Delivery
Shelf life: 12 months from date of manufacture in original unopened packaging stored in a cool
Storage: dry place out of direct sunlight.
Package: 250 drum, 1250kg drum.
Delivery as hazard 8 product.