Water treatment and disinfection
EDTA vs disodium EDTA
EDTA (C10H16N2O8, CAS 60-00-4) and disodium EDTA (C10H14N2Na2O8, CAS 139-33-3) are both listed under builders and chelating agents.
EDTA has a molar mass of 292.24 g/mol, disodium EDTA 336.21 g/mol.
Measured melting points are 245 °C for EDTA and 242 °C for disodium EDTA.
EDTA carries the GHS signal word Warning, while no signal word is recorded for disodium EDTA in our records.
On CompoundList, 252 suppliers list EDTA and 68 suppliers list disodium EDTA.
Data last updated 7 October 2026
 |  | |
|---|---|---|
| Identity | ||
| Name in our database | Ethylenediaminetetraacetic acid | Ethylenediaminetetraacetic acid disodium salt |
| CAS number | 60-00-4 | 139-33-3 |
| Molecular formula | C10H16N2O8 | C10H14N2Na2O8 |
| Molar mass | 292.24 g/mol | 336.21 g/mol |
| IUPAC name | 2-[2-[bis(carboxymethyl)amino]ethyl-(carboxymethyl)amino]acetic acid | disodium, 2-[2-[carboxylatomethyl(carboxymethyl)amino]ethyl-(carboxymethyl)amino]acetate |
| EC number | 200-449-4 | Not recorded |
| Physical properties | ||
| Appearance | Crystals from water | White crystalline powder |
| Melting point | 245 °C | 242 °C |
| Density | Relative density (water = 1): 0.86 | Not recorded |
| Flash point | >100 | >100 °C |
| Solubility | In water, 1,000 mg/L at 25 °C | Not recorded |
| LogP (octanol/water)Computed from the structure | -2.07 | -10.73 |
| Safety (GHS) | ||
| Signal word | Warning | Not recorded |
| Pictograms | Not recorded | |
| Hazard statements |
| Not recorded |
| Uses and classification | ||
| Uses and functions |
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| Category | Surfactants and detergents › Builders and chelating agents | Surfactants and detergents › Builders and chelating agents |
| HS code | 292249Amino-acids, other than those containing more than one kind of oxygen function, and… | 292249Amino-acids, other than those containing more than one kind of oxygen function, and… |
| Market on CompoundList | ||
| Suppliers | 252 suppliers | 68 suppliers |
| Supplier countries | 29 countries, most in China, United States, India | 14 countries, most in China, United States, India |
| Price rangeOnly prices set by suppliers who manage their own profile | Price on request | Price on request |
Measured and computed values as shown on each chemical page, plus live listings on CompoundList. Details may have changed, please confirm them with the supplier. Safety data is a summary, not an SDS.
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