英文名称： 1-Hydroxyethylidene-1,1-diphosphonic acid 
中文名称： 羟基乙叉二膦酸
MF： C2H8O7P2
MW： 206.03
CAS： 2809-21-4

Package for liquid:  Net. 250kgs Plastic Drum/ IBC

Pacakge for solid: 25kg/bag

Note: 

1. HEDP is available with lower Chloride level, lower Iron level, lower Arsenic level

2. HEDP is also available with its Sodium Salt solution or kalium salt solution

3. HEDP can be wide used for industrial treatment water as corrosion and scale inhibitor

4. HEDP has three types: 50%min, 60%min, 90%min and 98%min 

Appearance	Colorless or light yellow transparent liquid		white crystalline powder	White crystal powder
Active component(HEDP)%  ≥	50.0	60.0	90%		98.0min
Phosphorous acid(as PO33-)% ≤	2.0	2.0	2.5%		0.5
Phosphoric acid (asPO43)%  ≤	0.8	0.8	0.7%		0.5
Chloride  (as Cl-)%  ≤	1.0	1.0	1.0%		1.0
pH value(1% water solution)  ≤	2	2	2		2
Fe ion  ppm ≤	10	10	35		5

 Other Water Treatment Chemicals: 

1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP)

Amino Trimethylene Phosphonic Acid (ATMP)

2-Phosphonobutane-1,2,4-Tricarboxylic Acid(PBTC)

Polyacrylic Acid(PAA)

Hydrolyzed Polymaleic Anhydride(HPMA)

2-Hydroxyphosphonocarboxylic Acid (HPAA)

Diethylene Triamine Penta (Methylene Phosphonic Acid)(DTPMPA)

Ethylene Diamine Tetra (Methylene Phosphonic Acid)EDTMPA (Solid)

Copolymer of Maleic and Acylic Acid (MA/AA)