Phosphonic acid, (1-hydroxyethylidene)bis-, potassium salt

Phosphonic acid, (1-hydroxyethylidene)bis-, potassium salt - Names and Identifiers

Name	Potassium salt of(1-HydroxyEthylidene) Diphosphonate
Synonyms	HEDP.Kx HEDPoKx 1-HYDROXYETHANEDIPHOSPHONIC ACID POTASSIUM SALT 1-Hydroxyethane-1,1-diphosphonic acid potassium salt POTASSIUM SALT OF(1-HYDROXYETHYLIDENE) DIPHOSPHONATE Potassium salt of(1-HydroxyEthylidene) Diphosphonate (1-hydroxyethylidene)bisphosphonic acid, potassium salt Phosphonic acid, (1-hydroxyethylidene)bis-, potassium salt Phosphonic acid, (1-hydroxyethylidine)bis-, potassium salt potassium hydrogen (1-hydroxy-1-phosphonoethyl)phosphonate Potassium salt of 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid 1-Hydroxyethylidene-1,1-bis-(phosphonic acid) monopotassium salt Potassium salt of 1-Hydroxy Ethylidene-1,1- Diphosphonic Acid (HEDPKx)
CAS	67953-76-8
EINECS	267-956-0
InChI	InChI=1/C2H8O7P2.K/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

Phosphonic acid, (1-hydroxyethylidene)bis-, potassium salt - Physico-chemical Properties

Molecular Formula

C2H4K4O7P2

Molar Mass

358.39

Water Solubility

230g/L at 20℃

Vapor Presure

0Pa at 25℃

Physical and Chemical Properties

appearance	colorless to yellowish transparent liquid
active ingredient (in HEDP)%	26.0-30.0
total phosphorus (in terms of PO₄^3-)%	24.7-26.7
iron (as Fe^{3 +}) content in ppm ≤	20
density (20 ℃)g/cm³	1.30-1.40
Ph (stock solution)	6.0-8.0

Use

HEDP • Kx is the potassium salt of HEDP, HEDP • Kx and HEDP sodium salt has higher solubility under neutral conditions, is an excellent inhibitor of calcium carbonate scale, HEDP • Kx is mainly used for metal corrosion inhibition, swimming pool anti-fouling, metal cleaning, container cleaning, iron fouling control, metal pretreatment, low pressure boiler water treatment, circulating water treatment.