Articles
1-Hydroxyethylene 1, 1-Diphosphonic Acid
by Mitesh Patel Water Treatment Chemicals Manufacturer1. HEDP 60 %
(1-Hydroxyethylene 1, 1-Diphosphonic Acid)
CAS No. 2809-21-4
Molecular Formula: C2H8O7P2
Molecular weight: 206.02
2. Usage
ZEELCHEM™ 101 is
used as scale and corrosion inhibition in circulating cool water
system, oil field and low-pressure boilers in fields such as electric power,
chemical industry, metallurgy, fertilizer, etc. In light woven industry,
HEDP is used as detergent for metal and non-metal. In dyeing industry, ZEELCHEM™
101 is used as peroxide stabilizer and dye-fixing agent;
in non-cyanide electroplating, ZEELCHEM™ 101 is
used as chelating agent. The dosage of 1-10mg/L is preferred as scale inhibitor,
10-50mg/L as corrosion inhibitor, and 1000-2000mg/L as detergent. Usually, ZEELCHEM™
101 is used together with polycarboxylic acid.
HEDP 60 (HEDP Chemical)
Brand Name:
ZEELCHEM™ 101 (HEDP Chemical)
3. PROPERTIES
ZEELCHEM™ 101 is
an organophosphoric acid corrosion inhibitor. It can chelate with Fe, Cu, and
Zn ions to form stable chelating compounds. It can dissolve the oxidized
materials on these metals’ surfaces. ZEELCHEM™ 101shows
excellent scale and corrosion inhibition effects under temperature 250℃. HEDP has good chemical stability
under high pH value, hard to be hydrolysed, and hard to be decomposed under
ordinary light and heat conditions. Its acid/alkali and chlorine oxidation
tolerance are better than that of other organophosphoric acids (salt). ZEELCHEM™
101 can react with metal ions in water system to form
hexa-element chelating complex, with calcium ion in particular. Therefore,
HEDP has good antiscale and visible threshold effects. When built together with
other water treatment chemicals, it shows good synergistic effects.
4. SPECIFICATIONS:
|
Appearance |
Colorless
or light yellow transparent liquid |
|
Ca
Sequestration |
525.0 mg/gm |
|
Active
content（HEDP）％ |
60.0 % |
|
Phosphorous
acid（as PO33-）% |
1.0 max |
|
Phosphoric
acid （asPO43 ）% |
0.6 max |
|
Chloride
(as Cl–)% |
0.01 max |
|
pH（1％ solution） |
2.0 max |
|
Density （20℃）g/cm3 |
1.43 to
1.47 |
|
Fe ion ppm |
10.0 max |
|
Acetic Acid |
0.5% max |
5. PACKAGE & STORAGE
HEDP liquid: Normally in
270.0 kg net HDPE Drum, 65.0 kg carboys can also be available as required.
6. SAFETY PROTECTION
Acidity, Avoid contact with eye and skin, once contacted, flush
with water.
1-Hydroxy
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About Mitesh Patel 
Water Treatment Chemicals Manufacturer
0 connections, 0 recommendations, 26 honor points.Joined APSense since, September 25th, 2019, From vadodara, India.
Created on Nov 26th 2019 04:40. Viewed 193 times.
