Etidronic acid 98% CAS NO 2809-21-4

Payment Type: L/C,T/T
Incoterm: FOB,CIF
Min. Order: 25 Kilogram
Delivery Time: 5 Days

Basic Info

Model No.: cy2809-21-4

Additional Info

Packaging: 25kg

Productivity: 10000

Brand: cy

Transportation: Ocean,Land,Air

Place of Origin: China

Supply Ability: 10

Certificate: Enterprise standard

HS Code: 2931900090


Product Description

Hydroxyl ethylidene two phosphonic acid

Chinese alias: etidrophosphine; 1-hydroxyethylene-bisphosphonic acid; 1-hydroxyethylene-1,1-bisphosphonic acid; etidronic acid; hydroxyethylene-bisphosphonic acid;

English Name: etidronic acid

English alias: (1-Hydroxyethane-1,1-diyl) diphosphonic acid; Etidronsaeure; Acetodiphosphonic acid; ethane-1-hydroxy-1,1-diphosphonic acid; 1-Hydroxyethylidene-1,1-diphosphonic acid;

CAS: 2809-21-4

Molecular formula: C2H8O7P2

Molecular weight: 206.02800

Precise quality: 205.97500


Physicochemical properties

Appearance and properties: pale rice powder

Density: 1.45 (60% aq.)

Melting point: 198~199 C

Boiling point: 578.8 C at 760 mmHg

Flash point: 303.8 x C

Stability: Stable. Incompatible with strong oxidizing agents.

Steam pressure: 8.34E-16mmHg at 25 degree C

security information

Package level: II

Risk category: 8

Customs Code: 2931900090

Dangerous goods transportation Code: UN 3265

WGK Germany:2

Danger category code: R37/38; R41

Safety instructions: S26-S39

RTECS: SZ8562100

Dangerous goods sign: Xi


HEDP is an organic phosphonic acid scale and corrosion inhibitor, which can form stable complexes with iron, copper, zinc and other metal ions and dissolve oxides on metal surface. It can still play a good role in corrosion and scale inhibition at 250 C. It is still very stable at high pH. It is not easy to hydrolyze and decompose under ordinary photothermal conditions. The acid and alkali resistance and chlorine oxidation resistance are better than those of other organic phosphonic acids (salts). It can form hexacyclic chelate with metal ions in water, especially calcium ions, so it has better scale inhibition effect and obvious solubility limit effect. When combined with other water treatment agents, it shows an ideal synergistic effect. HEDP solid belongs to high purity products, suitable for winter cold areas; especially suitable for cleaning agents and daily chemical additives in the electronics industry.

Contact Information


Shandong Chenyi Environmental Protection Technology Co.,Ltd

Contact Person: Jerry



Address: No.215 Beiyuan Main street,tianqiao District,Jinan,Shandong

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