What Is Ethylenediaminetetraacetic Acid Lead(II) Disodium Salt Hydrate?

Ethylenediaminetetraacetic Acid Lead(II) Disodium Salt Hydrate (SKU E156499) is the disodium salt of the 1:1 chelate complex formed between lead(II) ions (Pb²⁺) and ethylenediaminetetraacetic acid (EDTA). In this complex, the hexadentate EDTA ligand coordinates to Pb²⁺ through its four carboxylate oxygen atoms and two amine nitrogen atoms, forming a highly stable, water-soluble coordination compound.

The compound is supplied as a crystalline hydrate, meaning a defined number of water molecules are incorporated into the crystal lattice. The disodium salt form ensures good aqueous solubility, making it convenient for preparation of standard solutions in analytical workflows. It is catalogued at Aladdin Scientific under SKU E156499.

Typical Applications and Uses in Research

This compound finds use across several research and analytical domains:

• Analytical Reference Standards: As a chemically defined, stable source of complexed lead, it is used to prepare calibration standards for atomic absorption spectrometry (AAS), inductively coupled plasma mass spectrometry (ICP-MS), and other trace metal analytical techniques.
• Chelation Chemistry Research: The compound serves as a model system for studying metal–ligand interactions, stability constants, and ligand exchange kinetics involving EDTA and divalent heavy metals.
• Environmental and Biological Studies: Researchers investigating lead speciation, bioavailability, or detoxification pathways may use the EDTA-chelated form as a controlled lead source to distinguish free ion effects from complexed lead effects.
• Method Development and Validation: Laboratories developing or validating methods for lead determination in water, soil extracts, or biological matrices may use this compound as a spiking reagent or matrix-matched standard.

Researchers should confirm suitability for their specific application, as some assays require free Pb²⁺ rather than the chelated form.

Storage, Handling, and Safety Considerations

Storage: Store the compound in a tightly sealed container in a cool, dry, well-ventilated area away from incompatible materials such as strong acids and strong oxidizers. As a hydrate, exposure to excessive heat or vacuum desiccation conditions may alter the water content and thus the effective concentration of solutions prepared from it. Consult the product's Safety Data Sheet (SDS) for specific storage temperature recommendations.

Handling: Because the compound contains lead, it must be handled with appropriate personal protective equipment (PPE) including nitrile gloves, safety glasses, and a laboratory coat. Work in a well-ventilated area or under a fume hood when handling powders to avoid inhalation of dust. Avoid ingestion and skin contact.

Waste Disposal: Lead-containing waste must be disposed of in accordance with national and local hazardous waste regulations. Do not pour lead-containing solutions down the drain without appropriate treatment or authorization. Consult your institution's Environmental Health and Safety (EHS) office for guidance.

Regulatory Status: Lead and its compounds are subject to regulation under frameworks such as REACH (EU), RoHS, and various national occupational exposure limit standards. Users are responsible for compliance with applicable regulations in their jurisdiction.

Purity, Specification, and Quality Assurance

Aladdin Scientific supplies Ethylenediaminetetraacetic Acid Lead(II) Disodium Salt Hydrate (E156499) as a research-grade reagent. Specific purity values, lot-specific certificates of analysis (CoA), and analytical test data are available on the product page or upon request from technical support.

When evaluating the compound for use as a quantitative analytical standard, researchers should pay attention to:

• Assay (purity): The percentage of the active chelate complex on a dry or as-is basis.
• Water content: For a hydrate, knowing the precise degree of hydration is important when calculating molar concentrations. Karl Fischer titration is a common method for determining water content.
• Heavy metal impurities: For applications requiring high purity, verify that the CoA includes data on trace metal impurities.
• Lot-to-lot consistency: Request CoA for the specific lot received to confirm specifications are met.

Contact Aladdin Scientific technical support for the most current specification sheet and CoA for SKU E156499.

Ordering, Availability, and Technical Support

How to Order: Ethylenediaminetetraacetic Acid Lead(II) Disodium Salt Hydrate is available from Aladdin Scientific under SKU E156499. Orders can be placed through the Aladdin Scientific website, by contacting your regional sales representative, or through authorized distributors. Procurement teams should reference the SKU to ensure correct product selection.

Packaging and Quantities: Available pack sizes are listed on the product page. Contact sales for bulk quantity inquiries or custom packaging requirements.

Technical Support: For application-specific guidance, compatibility questions, or specification inquiries, contact Aladdin Scientific technical support. Certificate of Analysis (CoA) documents for specific lots can be downloaded from the website using the lot number or requested from customer service.

Export Controls and Import Regulations: Lead compounds may be subject to export controls or import restrictions in certain countries. Buyers are responsible for verifying regulatory compliance for international shipments.