HDEP
1-Hydroxyethane-(1,1-di-phosphonic acid)

Cublen	K 60	K 3014	K 2012	K 4023	K 2222
Chem. Identity	acid	Na4-salt	Na2-salt	K3-salt	K2-salt
Abbreviation	HEDP	Na4HEDP	Na2HEDP	K3HEDP	K2HEDP
CAS-No. EINECS-No.	2809-21-4 220-552-8	3794-83-0 223-267-7	7414-83-7 231-025-7	60376-08-1 262-203-2	21089-06-5 244-210-2
Appearance	colorless to yellowish clear liquid
Active substance (calculated as acid)	60 %	20 %	16,5 %	26 %	15 %
Active substance (calculated as salt)	-	30 %	20 %	40 %	22 %
Density (g/cm³) @ 20°C	1.45	1.30	1.17	1.35	1.17
pH (1%) @ 20°C	1 - 2	11 - 12	4 - 6	7 - 9	5 - 7

Cublen	K 8514 GR	K 8514 P	K 9012 P
Chem. Identity	Na4-salt	Na4-salt	Na2-salt
Abbreviation	Na4HEDP	Na4HEDP	Na2HEDP
CAS-No. EINECS-No.	3794-83-0 223-267-7	3794-83-0 223-267-7	7414-83-7 231-025-7
Appearance	white granules	white powder
Active substance (calculated as acid)	60 %	60 %	> 74 %
Active substance (calculated as salt)	85 %	85 %	> 90 %
bulk density (g/cm³)	1.0	0.5	0.5
pH (1%) @ 20°C	11 - 12	11 - 12	4 - 6

Functional properties

Functional properties
Inhibition of CaCO3 precipitation	excellent
Inhibition of CaSO4 precipitation	satisfactory
Sequestration of metal ions	very good
Corrosion inhibition on unalloyed steel	very good