Molekula
EDTA tripotassium salt dihydrate
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
EDTA tripotassium salt dihydrate is a chelating agent used to sequester metal ions in laboratory and industrial applications. It is commonly employed in biochemical assays, water treatment, and pharmaceutical formulations. Available in powder form with a molecular weight of 442.54 g/mol, it has a CAS number of 65501-24-8 and is stable at ambient storage conditions. The signal word is Warning.
Molekula supplies EDTA tripotassium salt dihydrate at 99.0% - 102.0% purity in 100 g packs, from £28.56 inc. VAT. It is made or sourced to order. Every batch ships with a certificate of analysis, and safety data sheets are available in 5 languages. Larger quantities, up to multi-tonne, are quoted on request.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
On backorder — expected to ship by 5 December 2026
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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100 g — £23.80 per pack ex VAT · £28.56 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White Crystalline Powder |
| Heavy metals | ≤0.002% |
| pH | 7.0 - 9.0 |
| Chloride (Cl-) | ≤0.01% |
| Assay | 99.0% - 102.0% |
| Iron (Fe) | ≤50ppm |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 22510944 |
| CAS Number | 65501-24-8 |
| IUPAC Name | tripotassium;2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxymethyl)amino]acetate;dihydrate |
| Molecular Formula | (KOOCCH2)2NCH2CH2N(CH2COOK)CH2COOH · 2H2O |
| Molecular Weight | 442.54 |
| Exact Mass | 441.9794 |
| SMILES | C(CN(CC(=O)[O-])CC(=O)[O-])N(CC(=O)O)CC(=O)[O-].O.O.[K+].[K+].[K+] |
| InChIKey | MAPFUJCWRWFQIY-UHFFFAOYSA-K |
| InChI | InChI=1S/C10H16N2O8.3K.2H2O/c13-7(14)3-11(4-8(15)16)1-2-12(5-9(17)18)6-10(19)20;;;;;/h1-6H2,(H,13,14)(H,15,16)(H,17,18)(H,19,20);;;;2*1H2/q;3*+1;;/p-3 |
| PubChem CID | 2733162 |
| REACH Code | Y110 |
| HTS Code | 29224930 |
| Tariff Code | 2922498590 |
Safety & GHS
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Health Hazard
GHS07
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Serious Health Hazard
GHS08
Hazard statements
- H303 May be harmful if swallowed
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H332 Harmful if inhaled
- H335 May cause respiratory irritation
- H373 May cause damage to organs through prolonged or repeated exposure
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- P302+352 IF ON SKIN: Wash with soap and water
- P304+341 IF INHALED: If breathing is difficult, remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- EDTA dihydrate tripotassium
- EDTA tripotassium salt (EDTA-3K inverted exclamation mark currency2H2O)
- Ethylenediaminetetraacetic acid tripotassium salt dihydrate
- MAPFUJCWRWFQIY-UHFFFAOYSA-K
- Tripotassium EDTA Dihydrate
- Tripotassium ethylenediaminetetraacetate dihydrate
Frequently asked questions
What is EDTA tripotassium salt dihydrate used for?
It is commonly used as a chelating agent in laboratory and industrial applications, such as in water treatment and pharmaceutical formulations, and as an anticoagulant (K3EDTA) in blood collection tubes.
What is the chemical formula and molecular weight of EDTA tripotassium salt dihydrate?
The formula is (KOOCCH2)2NCH2CH2N(CH2COOK)CH2COOH · 2H2O with a molecular weight of 442.54 g/mol.
How should EDTA tripotassium salt dihydrate be stored?
It should be stored at ambient temperature, protected from moisture and light.
What grade is available for EDTA tripotassium salt dihydrate?
The specification gives an assay of 99.0% - 102.0%, with limits of heavy metals ≤0.002%, chloride ≤0.01% and iron ≤50 ppm, and a pH of 7.0 - 9.0.
Can Molekula supply EDTA tripotassium salt dihydrate in bulk?
Yes, Molekula can supply this product in bulk quantities—please contact our sales team for pricing and availability.
What documentation comes with an order of EDTA tripotassium salt dihydrate?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the shipment.
Where can I buy EDTA tripotassium salt dihydrate?
Directly from Molekula, which lists EDTA tripotassium salt dihydrate in 100 g packs from £28.56 inc. VAT, with a certificate of analysis for every batch. Larger quantities are quoted on request. Molekula's offices: United Kingdom, France, Spain, Germany, Italy, United States and China.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.