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Cadmiumdi(acetat)
ci77185 · Nsc75795 · ai3-01414 · c.i.77185 · Cadmiumacetat · CADMIUM ACETATE · cadmiumdiacetate · cadmiumethanoate
Identifikatoren & physikalische Daten
| CAS No. | 543-90-8 |
|---|---|
| Summenformel | Cd(C2H3O2)2 |
| Durchschnittliche Molmasse | 230,5 g/mol |
| Monoisotopische Masse | 231,92996717 g/mol |
| SMILES | CC(=O)[O-].CC(=O)[O-].[Cd+2] |
| InChIKey | LHQLJMJLROMYRN-UHFFFAOYSA-L |
| PubChem CID | 10986 |
| ChEBI | CHEBI:232796 |
| EC No. | 208-853-2 |
| DTXSID | DTXSID1020225 |
| Lokaler Name | Cadmiumdi(acetat) |
Chemische & physikalische Eigenschaften
| Polarare Oberfläche (TPSA) | 80,3 |
|---|---|
| H-Brücken-Donoren | 0 |
| H-Brücken-Akzeptoren | 4 |
| Frei drehbare Bindungen | 0 |
| Schwere Atome | 9 |
| Formalladung | 0 |
| Komplexität | 25,5 |
| Stoffklassen | Metals -> Cadmium Compounds, InorganicCarcinogens |
| Geruch | Odor of acetic acid |
| Dichte | 2.34 at 68 °F (USCG, 1999) - Denser than waterwill sink2.34 g/cu cmBecomes anhydrous at about 130 °Cdensity 2.01 g/cu cmpH of 0.2 molar aq soln 7.1colorless crystalsfreely soluble in watersoluble in alcohol /Cadmium acetate dihydrate/2.34 g/cm³2.341 @25 °C |
| Color/Form | Colorless crystalsMonoclinic, colorless crystals |
| Löslichkeit | Soluble in water, ethanolSolubility in water: very goodsoluble in H2O, ethanolsoluble H2O, alcohol [HAW93] |
| Endocrine Disruptors | Potential endocrine disrupting compound |
| Decomposition | When heated to decomposition it emits toxic fumes of cadmium. |
| Schmelzpunkt | 255 °C255°C |
| Physical Description | Cadmium acetate is an odorless colorless solid. Sinks and mixes with water. (USCG, 1999)[HSDB] White powder[MSDSonline]COLOURLESS CRYSTALS WITH CHARACTERISTIC ODOUR. |
| Stability/Shelf Life | STABILITY DURING TRANSPORT: STABLE. |
| Other Experimental Properties | Exists as the anhydrous salt or as one of a series of hydrates with 1-3 water molecules. |
| Aggregatzustand | Powder |
| Farbe | white |
| InChI | 1S/2C2H4O2.Cd/c2*1-2(3)4/h2*1H3,(H,3,4)/q+2/p-2 |
| InChIKey | LHQLJMJLROMYRN-UHFFFAOYSA-L |
| SMILES | CC(=O)O[Cd]OC(C)=O |
| CAS Datenbank | 543-90-8(CAS DataBase Reference) |
| EPA chemische Informationen | Cadmium acetate (543-90-8) |
Sicherheit & Vorschriften
| GHS-Einstufung | WarningH302 (100%): Harmful if swallowed [Warning Acute toxicity, oral]P261, P264, P270, P271, P273, P280, P301+P317, P302+P352, P304+P340, P317, P321, P330, P362+P364, P391, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 74 reports by companies from 8 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.DangerH340: May cause genetic defects [Danger Germ cell mutagenicity] |
|---|---|
| Regulatorische Informationen | Chemical: Acetic acid, cadmium saltRestricted substance: Cadmium di(acetate)Cadmium acetate: Does not have an individual approval but may be used under an appropriate group standardThe New Jersey Worker and Community Right to Know Act requires public and private employers to provide information about hazardous substances at their workplaces. (N.J.S.A. 34:5A-1 et. seq.) |
| Weitere Sicherheitsinformationen | IMAP assessments - Water soluble cadmium(2+) salts: Environment tier II assessment |
| DOT-Kennzeichnung | Poison |
| Brandgefahren | Special Hazards of Combustion Products: Toxic cadmium oxide fumes may form in fires. (USCG, 1999)Not combustible. Gives off irritating or toxic fumes (or gases) in a fire. |
| Gesundheitsgefahren | Inhalation causes coughing, sneezing, symptoms of lung damage. Ingestion produces severe toxic symptomsboth kidney and liver injuries may occur. Contact with dust causes eye irritation. (USCG, 1999) |
| Gefahrenübersicht | An eye and respiratory tract irritantMay cause damage to lungs, liver, and kidneys[HSDB] Cadmium compounds are potential carcinogens that are toxic to the kidneys, bone, and respiratory tract. [ICSC] An irritantMay be absorbed through skin[MSDSonline] See Cadmium and the linked diseases.The major hazards encountered in the use and handling of cadmium acetate stem from its toxicologic properties. Toxic primarily by ingestion and inhalation, exposure to this colorless, crystalline substance may occur in its use in electroplating, in dyeing and printing textiles, in manufacturing cadmium halides, and in finishing porcelains and pottery. Effects from exposure may include headache, nausea, shortness of breath, chest pain, kidney damage, liver damage, emphysema, intense pulmonary edema (possibly resulting in death). Processes and operations which may release cadmium fumes or dust should be enclosed and fitted with exhaust ventilation to maintain exposure at or below recommended levels. In activities where over-exposure is possible, workers should wear a high efficiency particulate filter respirator or self-contained breathing apparatus. Protective clothing also should be worn, including eye, face, and hand protection. All clothing should be removed before leaving work. If contact should occur, immediately wash contaminated skin with large amounts of water. Do not eat, smoke, or drink in work areas. Cadmium acetate presents only a moderate fire hazard (when in the form of dust) if exposed to heat, flame, or by chemical reaction with oxidizing agents, metals, hydrogen azide, zinc, selenium, or tellurium. For small fires involving cadmium acetate, extinguish with dry chemical, CO2, Halon, water spray or standard foam, and for large fires, use water spray, or standard foam. Cadmium acetate fires may produce irritating or poisonous gases. Wear a self-contained breathing apparatus and protective clothing when fighting such fires. Cadmium acetate should be stored in cool, well-ventilated areas, out of direct rays of the sun, and away from fire hazards. Small spills of cadmium acetate may be placed in containers for latter disposal (solutions are first taken up with sand or other noncombustible absorbent). Large liquid spills are contained in excavated pits or other holding areas that have been sealed with an impermeable flexible membrane liner. Runoff should be diked to prevent cadmium acetate from entering water sources or sewers. Solids should be covered with a plastic sheet. Liquid spills are neutalized with agricultural lime, crushed limestone, or sodium bicarbonate, and mechanical dredges or lifts used to remove immobilized masses. Before implementing land disposal of waste cadmium acetate, consult environmental regulatory agencies for guidance. |
Anwendungen & Verwendung
Beschreibung
Cadmium acetate is a colourless crystal with a characteristic odour. It is not combustible, but it decomposes on heating, producing toxic fumes of cadmium oxide. It is incompatible with oxidising agents, metals, hydrogen azide, zinc, selenium, and tellurium. Occupational exposure to cadmium and cadmium compounds occurs in workplaces mainly in the form of airborne dust and fume. Occupations and workplaces include cadmium production and refining, nickel–cadmium battery manufacture, cadmium pigment manufacture and formulation, cadmium alloy production, mechanical plating, zinc smelting, soldering, and polyvinylchloride compounding. Cadmium and compounds enter the body mainly by inhalation and by ingestion.
Verwenden
Cadmium acetate is used for glazing ceramics and pottery; in electroplating baths; in dyeing and printing textiles; and as an analytical reagent for sulfur, selenium, and tellurium.
Herstellung & Synthese
synthetische
Cadmium acetate is prepared by treating cadmium oxide with acetic acid:CdO + 2CH3COOH → (CH3COO)2Cd + H2OAlso, the compound may be prepared by treating cadmium nitrate with acetic anhydride.