1-Hydroxyethylidene-1,1-diphosphonic acid (CAS No. 2809-21-4) is supplied by Jinan Shenghe Chemical Co., Ltd. with a typical purity of 按批次COA提供(不公开发布). Main applications include Water Treatment Chemicals. Bulk quantities are available with COA; purity and packaging are subject to batch COA and order confirmation.
Water Treatment Chemicals
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The CAS number of 1-Hydroxyethylidene-1,1-diphosphonic acid is 2809-21-4.
Typical purity is 按批次COA提供(不公开发布), supplied in 按订单/批次确认(不公开发布), with COA provided.
Main applications include Water Treatment Chemicals.
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1-Hydroxyethylidene-1,1-diphosphonic acid is identified by CAS 2809-21-4, molecular formula C2H8O7P2 and molecular weight 205.97 g/mol. UNII M2F465ROXU; ChEBI 4907; InChIKey DBVJJBKOTRCVKF-UHFFFAOYSA-N. Boiling Point: 578.8; Melting Point: 198-199; Melting Point: 105 °C.
| CAS Registry Number | 2809-21-4 |
|---|---|
| PubChem CID | 3305 |
| Molecular formula | C2H8O7P2 |
| Molecular weight | 205.97 g/mol |
| IUPAC name | (1-hydroxy-1-phosphonoethyl)phosphonic acid |
| InChIKey | DBVJJBKOTRCVKF-UHFFFAOYSA-N |
| UNII (FDA) | M2F465ROXU |
| ChEBI ID | CHEBI:4907 |
| ATC code (WHO) | M05BA01 |
| Molecular Weight | 206.03 |
|---|---|
| XLogP3 | -3.7 |
| Hydrogen Bond Donor Count | 5 |
| Hydrogen Bond Acceptor Count | 7 |
| Rotatable Bond Count | 2 |
| Exact Mass | 205.97452659 |
| Monoisotopic Mass | 205.97452659 |
| Topological Polar Surface Area | 135 |
| Heavy Atom Count | 11 |
| Formal Charge | 0 |
| Boiling Point | 578.8 |
|---|---|
| Melting Point | 198-199 |
| Melting Point | 105 °C |
| Solubility | 1.15e+01 g/L |
| LogP | -3.8 |
| Regulatory & Food Contact | FDA Substance added to food: BOILER WATER ADDITIVE FDA Cumulative Estimated Daily Intake (CEDI): FCS FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS SEQUESTRANT: Food Additives HEDP does not pose a safety concern at the levels of residue that are expected to remain on foods at the time TRS 928-JECFA 63/26 |
|---|---|
| GHS notification summary | 1.6% (35 / 2257) |
| GHS notification summary | 1.6% (35 / 2257) |
|---|---|
| Reported hazard statements | H290 (34.6%), H302 (55.6%), H314 (23.9%), H318 (92.2%), H413 (25.7%), H371 |
This chemical does not meet GHS hazard criteria for 1.6% (35 of 2257) of reports.
H290 (34.6%): May be corrosive to metals [Warning Corrosive to Metals]
Etidronic acid; 2809-21-4; HEDP; 1-Hydroxyethylidene-1,1-diphosphonic acid; EHDP; Etidronsaeure; Turpinal SL; Acetodiphosphonic acid; Hydroxyethanediphosphonic acid; Acido etidronico; Acide etidronique; Oxyethylidenediphosphonic acid; Dequest 2015; Dequest Z 010; Ferrofos 510; Dequest 2010
CAS 2809-21-4; molecular formula C2H8O7P2; molecular weight 205.97 g/mol.
Etidronic acid, 2809-21-4, HEDP, 1-Hydroxyethylidene-1,1-diphosphonic acid, EHDP, Etidronsaeure.
Documented regulatory listings: FDA Substance added to food: BOILER WATER ADDITIVE; FDA Cumulative Estimated Daily Intake (CEDI): FCS; FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS.
1.6% of GHS notifications report no hazard classification (35 of 2257).
Boiling Point: 578.8; Melting Point: 198-199; Melting Point: 105 °C; Solubility: 1.15e+01 g/L.
Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.
Supplier: Jinan Shenghe Chemical Co., Ltd. · Reply within one business day.