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Description
TCI E0088 Ethylenediaminetetraacetic Acid Calcium Disodium Salt Hydrate is a chelate complex formed between calcium ions and EDTA, supplied as the hydrated disodium salt. Within the AMI Scientific catalogue it sits under Chemistry, in the Catalysis and Inorganic Chemistry group covering main-group elements, since calcium itself belongs to the alkaline earth metals. Its role in the laboratory is broad: it serves as a ready-to-use calcium complex, as a comparison or reference material in analytical work, and as a reagent that provides chelating activity without stripping calcium out of the system under study — a property that is particularly valuable in biochemical and food-related work.
The defining characteristics of this material are its good solubility in water and the intermediate stability of the complex it forms. Calcium binds EDTA strongly enough to keep the complex intact under ordinary solution conditions, yet not as strongly as transition metals or heavy metals do. As a consequence, the complex readily surrenders its calcium when it encounters a metal ion that binds more tightly, such as lead, cadmium, copper, or iron. This selective exchange behaviour is precisely what makes it a valuable reagent for binding heavy metals while releasing calcium, which is far less hazardous, in their place.
In Indonesian laboratories the material is used wherever chelation chemistry has to be carried out on a calcium-containing matrix without disturbing the calcium already present. Analytical and quality control laboratories, biochemical laboratories, and food and beverage testing facilities are the usual settings, as are university teaching and research laboratories working on main-group element chemistry. Because it dissolves readily in water, it fits routine aqueous procedures without requiring any specialised solvent handling.
Laboratory Applications
- Heavy metal binding studies — the complex exchanges its calcium for lead, cadmium, copper, or iron, so it delivers chelating activity while releasing only the far less hazardous calcium ion into the system.
- Calcium-preserving chelation in biochemical work — it supplies EDTA chelating capacity without withdrawing calcium from the sample, which matters when calcium-dependent behaviour in the system must remain undisturbed during the experiment.
- Analytical reference and comparison material — as a defined calcium-EDTA complex it serves as a comparison standard in analytical procedures where a known, stable metal chelate is required for method development.
- Ready-to-use calcium complex source — laboratories that need calcium already presented in complexed form can use this salt directly, avoiding the extra step of preparing the chelate in situ from separate components.
- Food and beverage laboratory testing — its selective metal exchange behaviour and good water solubility suit aqueous food matrices where trace metal interactions must be controlled without altering the native calcium content.
Specifications
- Brand: TCI (Tokyo Chemical Industry)
- CAS Number: 23411-34-9
- Category: Chemistry > Catalysis and Inorganic Chemistry > Main-group Elements
- Chemical form: hydrated disodium salt of the calcium–EDTA chelate complex
- Solubility: readily soluble in water
- Pack sizes: available in standard TCI laboratory research pack sizes; please confirm the size required when ordering
- Storage: keep in a closed original container in a cool, dry place away from moisture
Handling and Storage
Store the product in its original tightly closed container in a cool, dry, well-ventilated area, protected from moisture, since the material is a hydrate and is readily soluble in water. Keep containers sealed when not in use to prevent moisture uptake and contamination of the solid. Use clean, dry spatulas and glass or chemically compatible plastic containers when weighing and transferring the material, and avoid cross-contamination with metal-containing tools or residues that could interfere with the chelate. Handle in accordance with standard laboratory practice: wear a laboratory coat, safety glasses, and suitable gloves, work in a well-ventilated area or fume hood when handling the powder, and avoid generating dust, inhalation, and direct contact with skin and eyes. Keep the container clearly labelled and consult the manufacturer's safety data sheet before use, and dispose of residues and solutions in line with institutional chemical waste procedures.
