EDTA 0.20N (0.10M) Solution
EDTA (Ethylenediaminetetraacetic acid disodium salt dihydrate, Na₂EDTA·2H₂O) 0.20N (0.10M) is a standard chelating solution widely used in complexometric titrations for quantitative determination of metal ions such as Ca²⁺, Mg²⁺, Zn²⁺, Cu²⁺, Fe³⁺, etc.
Formula / Strength
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Molecular weight (Na₂EDTA·2H₂O): 372.24 g/mol
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0.10 M = 37.22 g per litre distilled water
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Since EDTA complexes divalent ions in a 1:1 ratio, 0.10 M = 0.20 N
Appearance
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Clear, colourless solution
Uses
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Standard solution for water hardness tests
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Determination of alkaline earth and transition metals
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Used with indicators like Eriochrome Black T and buffers (pH 10)
Safety (SDS – brief)
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May cause mild irritation to eyes, skin, and respiratory tract
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Avoid inhalation and ingestion
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Wear gloves, goggles, and lab coat
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Store in a tightly sealed container at room temperature
| Weight | N/A |
|---|---|
| size | 2.5Lt, 5Lt, 25Lt |
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