Detailed Product Description

Tetra sodium of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP•Na4)

?CAS? 29329-71-3 (x-Na), 3794-83-0 (4-Na) Dequest:2016

Molecular Formula: C2H2O7P2Na4 Molecular weight: 294

Structural Formula:



Properties:
Dequest 2016 is the sodium salt of Dequest 2010, 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