Agent Name

Etidronic acid

Alternative Name

1-Hydroxy-1,1-diphosphonoethane

CAS Number

2809-21-4

Formula

C2-H8-O7-P2

Major Category

Other Classes

Synonyms

1-Hydroxy-1,1-diphosphonoethane; (1-Hydroxyethylene)diphosphonic acid; (1-Hydroxyethylidene)bis(phosphonic acid); (1-Hydroxyethylidene)diphosphonic acid; (Hydroxyethylidene)diphosphonic acid; 1,1,1-Ethanetriol diphosphonate; 1-Hydroxyethane-1,1-bisphosphonic acid; 1-Hydroxyethane-1,1-diphosphonate; 1-Hydroxyethane-1,1-diphosphonic acid; 1-Hydroxyethanediphosphonic acid; 1-Hydroxyethylidene-1,1-biphosphonate; 1-Hydroxyethylidene-1,1-bisphosphonate; 1-Hydroxyethylidene-1,1-diphosphonic acid; 1000SL; Acetodiphosphonic acid; Acide etidronique [INN-French]; Acido etidronico [INN-Spanish]; Acidum etidronicum [INN-Latin]; Dequest 2010; Dequest 2015; Dequest Z 010; Diphosphonate (base); EHDP; Ethane-1-hydroxy-1,1-diphosphonate; Ethane-1-hydroxy-1,1-diphosphonic acid; Etidronsaeure; Ferrofos 510; HEDP; Hydroxyethane-1,1-diphosphonic acid; Hydroxyethanediphosphonic acid; Oxyethylidenediphosphonic acid; Phosphonic acid, (1-hydroxyethylidene)bis-; Phosphonic acid, (1-hydroxyethylidene)di-; Phosphonic acid, 1-hydroxy-1,1-ethanediyl ester; RP 61; Turpinal SL; [ChemIDplus] UN3261

Category

Organic Acids

Description

White odorless powder; [MSDSonline]

Sources/Uses

Used as a sequestering and chelating agent; as a scale and corrosion inhibitor; as a bone resorptions inhibitor; [Merck Index]

Comments

No human data, but not expected to increase risk of congenital abnormalities based on animal studies; [REPROTOX] Safe to use as a sequestrant in food preparation; [JECFA] Causes gastrointestinal bleeding in lethal-dose feeding studies of mice; [RTECS] A corrosive substance that can cause injury to the skin, eyes, and respiratory tract; Inhalation may cause chemical pneumonitis; [MSDSonline]

Exposure Assessment
Explanatory Notes

The Guide in the Emergency Response Guidebook is for "Corrosive solid, acidic, organic, n.o.s."

Adverse Effects
Toxic Pneumonitis

Yes

Dermatotoxin

Skin Burns

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

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Chemical Information

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Related Information in HazMap
Other Information

No other related information on this agent was found.