Zinkdi(acetat)
Zn(OAc)2 · Zinc diacetate · Acetic acid, zinc(II) salt · Galzin · Diacetoxyzinc · Acetic acid zinc salt · NA-9153 · ai3-04465

Identifikatoren & physikalische Daten
| CAS No. | 557-34-6 |
|---|---|
| Summenformel | C4H6O4Zn |
| Durchschnittliche Molmasse | 183,5 g/mol |
| Monoisotopische Masse | 181,95575 g/mol |
| SMILES | CC(=O)[O-].CC(=O)[O-].[Zn+2] |
| InChIKey | DJWUNCQRNNEAKC-UHFFFAOYSA-L |
| PubChem CID | 11192 |
| ChEMBL | CHEMBL1200928 |
| ChEBI | CHEBI:62984 |
| EC No. | 209-170-2 |
| DTXSID | DTXSID8038770 |
| Lokaler Name | Zinkdi(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 |
| pH | Between 6,0 and 8,0 (5 % solution) |
| Dichte | 1.74 at 68 °F (USCG, 1999) - Denser than waterwill sink4.04 g/cu cm (sphalerite)4.09 g/cu cm (wurtzite)1.735 @25 °C1.84 g/mL at 25 °C (lit.) |
| Color/Form | Exists in two crystalline forms, alpha (wurtzite) and beta (sphalerite)White to grayish-white or yellowish powder colorless cubic crystals |
| Löslichkeit | Solubility: 40 g/ 100 g water at 25 °C67 g/100 g water at 100 °C3 g/ 100 g alcohol at 25 °C /Zinc acetate dihydrate/Insol in alkaliessol in dil mineral acidsMethanol (Slightly), Water (Slightly)Soluble in water, alcohol, dilute mineral acids and alkalies. |
| Decomposition | When heated to decomposition it emits toxic fumes of /zinc oxide/. |
| Schmelzpunkt | 237 °C83-86 °C |
| Physical Description | Obtained in both anhydrous form and as a dihydrate. Both are white crystalline solids. The primary hazard is the threat posed to the environment. Immediate steps should be taken to limit spread to the environment. Used to preserve wood, to make other zinc compounds, as a food and feed additive.Dry PowderLiquidColourless crystals or fine, off-white powderColorless, white to greyish-white, or yellowish solid[HSDB] White solid[CAMEO] White powder[MSDSonline] |
| Other Experimental Properties | Changes to alpha form at 1020 °Csublimes at 1180 °C /beta/White powdermp: 237 °C (decomposes)density: 1.735 g/cu cmsolubility: 30.0 g/100 g water at 20 °Csoluble in ethanol /Zinc acetate dihydrate/Heat of solution: -0.5 Btu/lb= -0.3 cal/g= -0.01X10+5 J/kgWhite, monoclinic, crystalline platespearly lusterloses 2H2O at 100 °C /Zinc acetate dihydrate/Crystallizes from dilute acetic acidfaint, acetous odorastringent tasteslightly efflorescentthe aqueous solution is neutral to slightly acid to litmuspH about 5-6 /Zinc acetate dihydrate/ |
| Siedepunkt | 908°C |
| Dampfdruck | 0.001Pa at 25℃ |
| Flammpunkt | 12 °C |
| Lagerbedingungen | Inert atmosphere,Room Temperature |
| pKa (Säurekonstante) | 4.756[at 20 ℃] |
| Aggregatzustand | Powder |
| Wichte | 1.84 |
| Farbe | Yellow to brown to gray-green |
| Geruch | Acidic odor |
| Merck | 14,10128 |
| Kosmetik-Inhaltsstoffe Funktionen | ORAL CAREANTIMICROBIALSKIN PROTECTINGASTRINGENT |
| InChI | 1S/2C2H4O2.Zn/c2*1-2(3)4/h2*1H3,(H,3,4)/q+2/p-2 |
| InChIKey | DJWUNCQRNNEAKC-UHFFFAOYSA-L |
| SMILES | CC(O[Zn]OC(C)=O)=O |
| LogP (Verteilungskoeffizient) | -1.28 |
| CAS Datenbank | 557-34-6(CAS DataBase Reference) |
| NIST chemische Informationen | Zinc acetate(557-34-6) |
| EPA chemische Informationen | Zinc acetate (557-34-6) |
Sicherheit & Vorschriften
| GHS-Einstufung | This chemical does not meet GHS hazard criteria for 49.2% (348 of 708) of reports.DangerH302 (39.7%): Harmful if swallowed [Warning Acute toxicity, oral]H318 (20.6%): Causes serious eye damage [Danger Serious eye damage/eye irritation]H319 (11.4%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]H400 (32.9%): Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]H410 (16.4%): Very toxic to aquatic life with long lasting effects [Warning Hazardous to the aquatic environment, long-term hazard]H411 (23.2%): Toxic to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard]P264, P264+P265, P270, P273, P280, P301+P317, P305+P351+P338, P305+P354+P338, P317, P330, P337+P317, P391, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 708 reports by companies from 25 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.Reported as not meeting GHS hazard criteria per 348 of 708 reports by companies.There are 24 notifications provided by 360 of 708 reports by companies with hazard statement code(s).Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website. |
|---|---|
| Regulatorische Informationen | Chemical: Acetic acid, zinc(2+) saltAcetic acid, zinc salt (2:1) is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Acetic acid, zinc salt (2:1) are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)Status: Active Update: 08-12-2022 https://echa.europa.eu/registration-dossier/-/registered-dossier/17716Zinc 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.) |
Anwendungen & Verwendung
Beschreibung
Zinc acetate (chemical formula: Zn(O2CCH3)2) is a kind of salt commonly existing in the dihydrate form. It appears as colorless solid. It is produced through the reaction between zinc oxide with acetate acid. Given that zinc is an essential element for growth and development of human body, zinc acetate can be used as a dietary supplement for the treatment of zinc deficiency. It plays an important role for the synthesis of cholesterol, protein, and fats. It can also be used as an astringent, styptic and emetic. In industry, it has various kinds of applications including wood preservation, manufacturing of other zinc salts as well as ethylene acetate, being used as a dye mordant, and analytical reagent.
Herstellung & Synthese
synthetische
Zinc acetate is prepared by the reaction of acetic acid with zinc oxide followed by crystallization (crystals of dihydrate obtained): ZnO + 2CH3COOH → (CH3COO)2Zn + H2O.