(1-hydroxyethylidene)bisphosphonic acid, sodium salt
For Research Use Only.
Category
Corrosion and Scale Inhibitor
Cat.No.
WTA-036
CAS
29329-71-3
Product Name
(1-hydroxyethylidene)bisphosphonic acid, sodium salt
Structure
Structure
Product Details
Catalog Water Technology
WTA-036
Synonyms
HEDPoNa; sodium 1-hydroxyethylidene diphosphonate; 1-Hydroxyethanediphosphonic Acid Sodium Salt; 1-Hydroxyethanediphosphonic acid, sodium salt; 1-Hydroxyethanediphosphonic acid, sodium salt; (1-Hydroxyethyliden)bisphosphonsure, Natriumsalz; Hydroxyethylidene diphosphonic acid, sodium salt
IUPAC Name
sodium;hydroxy-(1-hydroxy-1-phosphonoethyl)phosphinate
Molecular Weight
249.99
Molecular Formula
C2H4Na4O7P2
Canonical SMILES
CC(O)(P(=O)(O)O)P(=O)(O)[O-].[Na+]
InChI
InChI=1S/C2H8O7P2.Na/c1-2(3,10(4,5)6)11(7,8)9;/h3H,1H3,(H2,4,5,6)(H2,7,8,9);/q;+1/p-1
InChIKey
MKJHAUJMSPBJTL-UHFFFAOYSA-M
Boiling Point
578.8°C at 760 mmHg
Flash Point
303.8°C
Density
1.11-1.21 g/mL
EINECS
249-559-4
Properties
HEDP·Na is a kind of scale and corrosion inhibitor which belongs to organic phosphonic acid. It can form stable complexes with iron, copper, zinc and other metal ions, and can also dissolve the metal surface oxide. Under 250 °C condition, HEDP·Na can still play a good corrosion and scale inhibition effect. HEDP·Na has good chemical stability under high pH value, hard to be hydrolyzed, and hard to be decomposed under ordinary light and heat conditions. Its acid/alkali and chlorine oxidation tolerance show better than that of other organic phosphonic acid (salt) acids (salt).
Storage
Storage in shady room and dry place.
pH of 1% solution
2.3-2.9
Application
HEDP·Na is widely used as scale and corrosion inhibitor in industrial circulating cooling water systems of electric power, chemical industry, metallurgy, chemical fertilizer, and also in medium or low pressure boilers, oilfield water injection and oil pipeline. Besides these applications, HEDP·Na can also be used as cleaning agent of metal and nonmetal in the textile industry, as peroxide stabilizer and fixing agent in bleaching and dyeing industry, as complexing agent in cyanide free electroplating industry, as the carrier of radioactive elements in pharmaceutical industry, and so on.
Appearance
Colorless or yellowish transparent liquid
Description
HEDP·Na is the mono-sodium salt of HEDP, and is mostly suitable for acidic scale inhibitors and detergents, can be used for metal surface cleaning, metal treatment and metal ion control, etc.
Safety Protection
Acidity, Avoid contact with eye and skin, once contacted, flush with water.
Fe
20 max
Active Content
19.0-21.0
RIDADR
UN 3265 8/PG III
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