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English name: EDTA (Ethylenediaminetetraacetic acid)
Molecular formula: C10H16N2O8
Molecular weight: M=292.24
CAS number: 60-00-4
Appearance: White crystalline powder, melting point 240 ℃ (decomposition). Insoluble in cold water, alcohols, and general organic solvents, slightly soluble in hot water, soluble in solutions of sodium hydroxide, sodium carbonate, and ammonia.
Quality indicators: (Q/24SJK01-2012 quality standard)
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Testing items
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Standard indicators
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Appearance:
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white crystalline powder
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content %
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≥ 99.0
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chloride（以Cl计）%
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≤ 0.01
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sulfate（以SO4计）%
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≤ 0.05
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heavy metal（以Pb计）%
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≤ 0.001
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Iron (calculated as Fe)%
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≤ 0.001
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Loss on drying（105±2℃）%
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≤ 0.2
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Chelation value:mgCaCO3/g
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≥ 339
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NTA%
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——
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pH
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2.8-3.0
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Packaging: 25kg/bag or packaged according to customer requirements.
Storage: Store in a dry and ventilated warehouse, avoid direct sunlight, and handle with care.
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