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Chemical Name: Ethylenediaminetetraacetic Acid Tetrasodium Salt
Common Synonym: EDTA Tetrasodium
CAS Number: 64-02-8
Physical Form: White crystalline powder
Typical Use: Chelating agent in cleaning, water treatment, laboratories, and industry
Main Risks: Irritation to eyes and skin, especially after direct contact
Acute Effects: Eye exposure usually causes stinging, tearing, or redness. Skin contact often leaves mild rashes or dry spots. Inhaling powder sometimes irritates the throat or lungs, leading to coughing.
Chronic Exposure: Repeated contact can make sensitive skin worse or aggravate respiratory issues.
Environmental Impact: Spillages in water may disrupt aquatic ecosystems, mainly due to chelating action on metal ions.
Main Component: Tetrasodium ethylenediaminetetraacetate
Concentration: Over 98% purity in technical grade forms
Impurities: Trace sodium salts, water content fluctuates with storage
Eye Contact: Rinse immediately with clean running water for at least ten minutes, hold eyelids open and seek further help if irritation remains.
Skin Contact: Wash with plenty of soap and water, discard soiled clothing, watch for rash or discomfort.
Inhalation: Move affected person outside, ensure fresh air, check breathing comfort, seek attention if coughing or wheezing persists.
Ingestion: Rinse mouth out, drink water to help dilute, avoid vomiting unless directed, see a doctor for larger amounts.
Materials to Use: Dry chemical powder, foam, or carbon dioxide fire extinguishers, do not use water stream directly on powdered material.
Hazards in Fire: Decomposition gives off irritating fumes, including oxides of nitrogen and carbon.
Precautions: Firefighters should wear full protective clothing and self-contained breathing apparatus to avoid irritation.
Containment: Keep dust to a minimum, close off area from unnecessary foot traffic.
Spill Clean-Up: Sweep up carefully without stirring dust, use damp cloths to finish small residue, avoid sweeping into drains or water.
Personal Protection: Wear nitrile gloves, dust mask, and goggles; ventilate the area as much as possible.
Disposal: Collect in sealed containers, send to approved chemical disposal, do not simply wash down sink or drain.
Handling: Work in well-ventilated space, avoid breathing dust, wear personal protection. Keep food or drinks far from product use areas. Wash hands after handling.
Storage: Keep in tightly sealed containers in a cool, dry space. Protect from moisture and direct sunlight. Store apart from acids and oxidizers, as these combinations can trigger reactions.
Ventilation: Local exhaust ventilation reduces airborne powder.
Eye Protection: Chemical splash goggles help keep irritants out.
Gloves: Nitrile or latex gloves work well for most users.
Respiratory Protection: Particulate mask, especially for those who handle larger amounts or frequent spills.
Clothing: Lab coat, aprons, or coveralls recommended for regular handlers.
Hygiene: Always wash exposed skin before eating or smoking to cut down irritation risk.
Appearance: White or off-white crystalline powder
Odor: Mild or odorless
Solubility: Dissolves well in water
Melting Point: Decomposes before melting
pH: Solutions tend to be alkaline, often between 10-12
Vapor Pressure: Not significant at room temperature
Stability: Remains solid when stored dry, absorbs moisture if left exposed
Chemical Stability: Stable under ordinary storage, breaks down if mixed with acids, oxidizers, or heated above decomposition temperature
Incompatible Materials: Strong acids, strong oxidizing agents
Hazardous Products: Heating can release toxic fumes of nitrogen oxides and other breakdown products.
Routes of Entry: Inhalation, skin, eye, and accidental ingestion
Acute Toxicity: Low oral toxicity for humans, but ingestion sometimes causes cramps or mild GI upset
Skin and Eye Irritation: Documented as mild to moderate depending on exposure length and concentration
Long-Term Exposure: Not classified as a carcinogen, but long direct contact is uncomfortable for those with sensitive skin
Aquatic Impact: Strong tendency to bind metal ions, which can impact water-dwelling species by reducing essential trace metals
Persistence: Degrades gradually in natural environments, especially under sunlight and microbial activity
Bioaccumulation: Not known to accumulate in living tissues, but persistent in water for weeks without treatment
Best Practices: Dilute and neutralize unused product with plenty of water, send to licensed chemical disposal site
Dilution: Do not dump untreated waste into sewer systems, as municipal water plants can sometimes miss removing chelated metals
Regulatory Status: Not classified as hazardous for ground, sea, or air transport under international regulations
Safe Packaging: Keep containers well sealed, labeled, and padded for shipment
Spill Risk: Minimal in transit with dry material packed securely, focus on dry dust containment
Regulations: Listed on major chemical inventories, subject to specific workplace exposure rules in some regions
Labeling: Must show hazard statements related to irritation and aquatic toxicity where required
Occupational Limits: No occupational exposure limits set in many countries, but prudent handling and monitoring are expected
