Home -> CAS DataBase Listed 2 -> Pharmaceuticals and Biochemicals -> CAS No.2809-21-4 1-Hydroxyethylidene-1,1-diphosphonic acid
1-Hydroxyethylidene-1,1-diphosphonic acid (cas 2809-21-4) Molecular Structure

1-Hydroxyethylidene-1,1-diphosphonic acid(CAS No. 2809-21-4)

  • Molecular Formula: C2H8O7P2
  • Molecular Weight: 206.03

Identification of 2809-21-4

  • Name:1-Hydroxyethylidene-1,1-diphosphonic acid
  • EINECS:220-552-8
  • Molecular Formula:C2H8O7P2
  • CAS Registry Number:2809-21-4
  • Synonyms: 1-Hydroxyethane-1,1-diphosphonic Acid; Etidronic acid; HEDP; HEDPA; Hydroxyethylidene-1,1-Diphosphonic Acid; Hydroxy Ethylidene-1,1-Diphosphonic Acid; 1-Hydroxy Ethylidene-1,1-Diphosphonic Acid; 1-Hydroxyethylidene diphosphonic Acid; 1-hydroxy ethylene-1,1-diphosphonic acid; 1-HYDROXYETHYLIDENEDI (PHOSPHONIC ACID)
  • InChI：InChI=1/C2H8O7P2/c1-2(3,10(4,5)6)11(7,8)9/h3H,1H3,(H2,4,5,6)(H2,7,8,9)
  • Molecular Structure:1-Hydroxyethylidene-1,1-diphosphonic acid C2H8O7P2 (cas 2809-21-4) Molecular Structure
  • This structure is also available as a 2d Mol file.

Chemical Properties

  • Molecular Weight:206.03
  • Density:1.45 (60% aq.)
  • Boiling Point:578.8°C at 760 mmHg
  • Melting Point:198~199℃
  • Flash Point:303.8°C
  • Stability:Stable. Incompatible with strong oxidizing agents.
Raw materials
Preparation Products
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Total 129 1-Hydroxyethylidene-1,1-diphosphonic acid CAS No.2809-21-4 suppliers and manufacturers for the Global
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ChinaDiamond member Zouping Mingxing Chemical Co.,Ltd.
Purity:passed , intermediate
Tel: 86-543-4354146
Fax: 86-543-4354146
Address: 428 Daixi Third Road Zouping County Shandong Province China China
ChinaDiamond member Hangzhou Dayangchem Co., Ltd.
1-Hydroxyethylidene 1,1-diphosphonic acid
Tel: 86-571-88938639
Fax: 86-571-88938652
Address: B/2601 Fuli Building, 328# WenEr Rd. Hangzhou City 310012 China China
ChinaDiamond member Hubei Nosk Chemical Co.,Ltd
Molecular Formula: C2H8O7P2 Molecular Weight: 206.03 InChI: InChI=1/C2H8O7P2/c1-2(3,10(4,5)6)11(7,8)9/h3H,1H3,(H2,4,5,6)(H2,7... Synonyms: 1-Hydroxyethane-1,1-diphosphonic Acid; Etidronic acid; HEDP; HEDP
Tel: 86-27-87677569
Fax: 86-27-87676156
Address: No. 46, Shucheng Road, Hongshan District, Wuhan, China China
ChinaGold member JINAN PENGDAOCHEMICAL CO.,LTD
Purity:60% , items index Appearance Colorless or light yellow transparent liquid White crystal powder Active content (HEDP)% 58.0-62.0 89.0 min Phosphorous acid (as PO 3 3-) % 2.0 max 0.5 max Phosphoric acid (asPO 4 3- )% 0.8 max 0...
Tel: 86-311-67268458
Address: Ming street,Qiaoxi District, Shijiazhuang China
ChinaSilver member Dizao Technology Co.,Ltd
Purity:58% , 1) Chemical name: 1-hydroxyethylidene-1, 1-diphosphonic acid 2) Abbreviation: HEDP 3) CAS No: 2809-21-4. Specifications 1) HEDP is widely used in circulating cool water system, oil field water pipelines and boilers for ..
Tel: 86-311-89907285
Fax: 86-311-89907285
Address: No.265 Zhongshan East Road, Shijiazhuang, Hebei, China China
China SHANDONG AONA CHEMICAL CO.,LTD
Purity:50% , HEDP is an organophosphoric acid corrosion inhibitor. It can chelate with Fe, Cu, and Zn ions to form stable chelating compounds. It can dissolve the oxidized materials on these metals’ surfaces. It shows excellen..
Tel: 86-532-85781295
Fax: 86-532-85781023
Address: Room3202-1, No.33 Donghai west road,Qingdao 266000,Shandong province,China China
China SPE Chemicals Co.,Ltd
Purity:100 , [CAS No.] 2809-21-4 Molecular Formula: C 2 H 8 O 7 P 2 Molecular Weight: 206 Properties: This product is an organophosphoric acid corrosion inhibitor. It can chelate with Fe, Cu, and Zn ions to form stable chelating com..
Tel: +86-21-51386314
Fax: +86-21-51386414
Address: 1701 Room, 3#Building, No 400 Tangqiao road China
China Zouping Dongfang Chemical Industry Co., Ltd
Purity:50% 60% 98% , Specifications 1.HEDP Chelant and Stablizing agent CAS NO. 2809-21-4 2.Both liquid (50% / 60%) or solid ones 3.Organic Phosphoric Acid CAS No. 2809-21-4 Molecular Formula: C 2 H 8 O 7 P 2 Molecular weight: 206.02 Struct..
Tel: 86-533-2286667
Address: Haosheng Town，Zouping County，Shandong，China China
China shandong huayou chemistry co.,ltd.
Purity:60% , 1-Hydroxyethylidene-1,1-Diphosphonic acid （ HEDP ） CAS No. 2809-21-4 Molecular Formula: C 2 H 8 O 7 P 2 Abbreviation: HEDP Molecular weight: 206 Structural Formula Spceification: items index Appearance Colorless or li..
Tel: 86-531-88686116
Address: No.15612 century Avenue High-tech Development Zone, Jinan, Shandong, China China
China zouping dongfang chemical industry co.,ltd
Purity:50% , Name: 1-Hydroxy Ethylidene-1, 1-Diphosphonic Acid Molecular formula: C 2 H 8 O 7 P 2 Relative molecular mass: 206.02 Structural formula: I. Product Property HEDP is an organophosphoric acid corrosion inhibitor. It can c..
Tel: 86-0543-4500017
Fax: 86-0533-2286667
Address: huaxia 1530 zibo city shandong province China
China Jining Shengrun Chemical Industry Co., Ltd
1-Hydroxy Ethylidene-1,1-Diphosphonic Acid (HEDP) CAS No. 2809-21-4 Molecular Formula: C 2 H 8 O 7 P 2 Molecular weight: 206.02 Structural Formula: Properties: HEDP is an organophosphoric acid corrosion inhibitor. It ca..
Tel: 86-537-7127666
Fax: 86-0537-5020519
Address: Jincheng Road, Wenshang County,Jining City , Shandong Province, China China
China Chemland Group INC
CAS No. 2809-21-4 Molecular formula: C 2 H 8 O 7 P 2 Molecular weight: 206.02 Properties HEDP is an organophosphoric acid corrosion inhibitor. It can chelate with Fe, Cu, and Zn ions to form stable chelating compounds.i..
Tel: 86-532-85026682
Fax: 86-532-85028486
Address: NO.10 HongKong Middle Rd, Qingdao,China China
China Zaozhuang Xintai Water Treatment Co.,Ltd.
Purity:60% 90% , Specification: items index Appearance Clear, Colorless to pale yellow aqueous solution White crystal powder Active content (HEDP)% 58.0-62.0 90.0min Phosphorous acid (as PO 3 3- ) % 1.0 max 0.8 max Phosphoric acid (asPO..
Tel: 86-632-18953701260
Fax: 86-632-3461077
Address: Zhongtai Industrial Park, Xiwangzhuang Town, Shizhong, Zaozhuang, Shandong China
China COY CHEMICAL CO. LTD
1-Hydroxy Ethylidene-1,1-Diphosphonic liquid 50%min Active content (HEDP)%: 50%min Phosphorous acid (as PO33-)%:2.0 max Phosphoric acid? (asPO43- )%:0.6 max Chloride (as Cl-)%:0.01 max PH (1% solution):2 max Density? (2..
Tel: 86-371-13526470816
Address: nongye road ,zhengzhou ,china China
China Tianjin Yiming Tengda Chemical Ltd. Co.
Tel: 86-0311-85238065
Fax: 0311-85238065
Address: Weiming Street China
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References of 1-Hydroxyethylidene-1,1-diphosphonic acid

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 oral 1800mg/kg (1800mg/kg) ? Angewandte Chemie, International Edition in English. Vol. 14, Pg. 94, 1975.

Safety

Moderately toxic by ingestion. When heated above 200° it decomposes violently to produce toxic fumes of phosphine, phosphoric acid, and POx.
Hazard Codes:?IrritantXi
Risk Statements: 37/38-41?
R37/38:Irritating to respiratory system and skin.?
R41:Risk of serious damage to the eyes.
Safety Statements: 26-39?
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.?
S39:Wear eye / face protection.
RIDADR: UN 3265
WGK Germany: 2
RTECS: SZ8562100
F: 10
HazardClass: 8
PackingGroup: II

1-Hydroxyethylidene-1,1-diphosphonic acid CAS# 2809-21-4 Related Products Information
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