water treatment chemicals-HEDP

1. 15 years' export experiences !
2. ISO 9001/ISO14000.
3.Usage: Cooling water system and waste water and Textile Auxiliaries.
Chemical Name: 1-Hydroxyethylidene-1, 1-Diphosphonic Acid
CAS No. 2809-21-4
Molecular Formula: C2H8O7P2
Molecular weight: 206.02
Structural Formula:


CHARACTERISTICS
Chemical Name
1-Hydroxyethylidene-1, 1-Diphosphonic Acid
Appearance
Clear,water-white to
pale yellow solution
Colour
80Hazen Maximum
Total Active Acid,%
58.0-62.0
Phosphoric Acid(as PO43-) ,%
0.8 Maximum
Phosphoric Acid(as PO33-) ,%
2.0 Maximum
Ca2+ Sequestration, (as CaCO3 mg/g )
450 Minimum
Iron(as Fe),ppm
20.0 Maximum
Chloride(as Cl-), %
1.0 Maximum
PH,(1% solution 25°C)
1.0-2.0
Specific gravity (at 20°C)
1.41-1.46
Packing
200kg/250kg Plastic Drum

Usage:
HEDP 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 nonmetal. In dyeing industry,
HEDP is used as peroxide stabilizer and dye fixing agent; In noncyanide electroplating, HEDP 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, HEDP is used together with polycarboxylic acid..