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Monosodium etidronate

CAS Number
29329-71-3
EC Number
249-559-4
Chemical Formula
C2H8O7P2.xNa
Molecular Weight
228.01 g/mol

Description

Monosodium etidronate (CAS 29329-71-3 ), the monosodium salt form of HEDP, is a phosphonate-based chelating agent used across industrial and personal care applications. It controls metal ion activity in formulations and process fluids, preventing scale formation, discoloration, and corrosion. In personal care formulations such as shampoos, cleansers, and skin care products, it sequesters calcium and magnesium ions that would otherwise reduce surfactant performance and cause residue buildup. Water treatment programs rely on it to inhibit calcium carbonate and calcium phosphate scale in cooling towers, boilers, and process water circuits. This ensures the longevity and efficiency of industrial equipment. In textile and paper processing, it prevents metal-catalyzed degradation of bleaching baths and dye liquors, protecting product consistency. This is vital for maintaining high-quality standards in manufacturing. Oil and gas operators use it as a corrosion inhibitor and scale suppressant in injection water and pipeline systems. This chemical helps maintain the integrity of infrastructure in harsh environments. Monosodium etidronate is supplied as an aqueous solution, with active content concentrations typically in the range of 30–40%. Technical grade is the standard offering for industrial water treatment and oilfield applications. Personal care grades with tighter purity specifications are available for formulators requiring compliance with cosmetic ingredient standards. These products meet rigorous safety and quality benchmarks for consumer use. Contact us for supply of Monosodium etidronate Request Quote

Other Names (Synonyms)

1-Hydroxyethane-1,1-diphosphonic acid sodium salt | BCZ8ETH6PD | Monosodium (1-hydroxyethylidene)-1,1-diphosphonate | Phosphonic acid, P,P'-(1-hydroxyethylidene)bis-, sodium salt (1:1) | RefChem:1089837 | Phosphonic acid, (1-hydroxyethylidene)bis-, sodium salt | sodium;hydroxy-(1-hydroxy-1-phosphonoethyl)phosphinate | 1-Hydroxyethanediphosphonic acid sodiumsalt

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Safety & Handling

Danger
GHS05· CorrosiveGHS07· Irritant

Hazard Statements

H302Harmful if swallowed
H318Causes serious eye damage
H319Causes serious eye irritation
H413May cause long lasting harmful effects to aquatic life

Precautionary Statements

P264Wash … thoroughly after handling.
P270Do not eat, drink or smoke when using this product.
P273Avoid release to the environment.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P317Get emergency medical help.
P330Rinse mouth.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P317Get emergency medical help.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.