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แนะนำผลิตภัณฑ์
| Parameter | Details |
|---|---|
| Chemical Name | Ethylenediaminetetraacetic Acid |
| CAS Number | 60-00-4 |
| Molecular Formula | C₁₀H₁₆N₂O₈ |
| Molecular Weight | 292.24 g/mol |
| Physical Appearance | White crystalline powder; Odorless |
| Melting Point | 240 °C (decomposes) |
| Solubility | Slightly soluble in water (0.5 g/L at 25 °C); Soluble in alkaline solutions (e.g., NaOH, KOH); Insoluble in most organic solvents |
| pKa Values | 1.99, 2.67, 6.16, 10.26 |
| Chemical Properties | Tetraprotic carboxylic acid; Strong chelating agent, forms stable 1:1 complexes with most divalent/trivalent metal ions (e.g., Ca²⁺, Mg²⁺, Fe³⁺); Stable under normal storage conditions |
| Primary Applications | 1. Water Treatment: Chelating agent for scale and corrosion inhibition2. Food Industry: Preservative, sequestrant (E386), prevents discoloration and oxidation3. Pharmaceuticals: Metal ion chelator in drug formulations; treatment for heavy metal poisoning4. Laboratory & Industry: Titrant in complexometric titrations; stabilizer in cosmetics, detergents, and textile dyeing |
| Safety & Hazards | - Low acute toxicity (oral LD₅₀ in rats: ~2,000 mg/kg); Non-irritating to skin and eyes under normal use- May cause gastrointestinal discomfort if ingested in large doses- Environmental Note: Poorly biodegradable; May affect aquatic life by disrupting metal ion homeostasis |
| Storage Requirements | Store in airtight containers in a cool, dry, well-ventilated area; Avoid contact with strong oxidizers and alkaline materials; Protect from moisture |
| Regulatory Notes | Approved for food use in most countries (E-number E386); Complies with FDA, EU, and WHO standards; Restrictions on discharge to aquatic environments apply in some regions |
