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Essigsäure, Kupfer(II)-Salz
Cu(oAc)2 · CUPRIC ACETATE · COPPER ACETATE · Copper (II) Acetatae · acetatedecuivre · Copper(Ⅱ) acetate · BARFOED'S REAGENT · AI-61-A
Identifikatoren & physikalische Daten
| CAS No. | 142-71-2 |
|---|---|
| Summenformel | C4H6CuO4 |
| Durchschnittliche Molmasse | 181,63 g/mol |
| Monoisotopische Masse | 180,95620617 g/mol |
| SMILES | CC(=O)[O-].CC(=O)[O-].[Cu+2] |
| InChIKey | OPQARKPSCNTWTJ-UHFFFAOYSA-L |
| PubChem CID | 8895 |
| EC No. | 205-553-3 |
| DTXSID | DTXSID2059720 |
| Lokaler Name | Essigsäure, Kupfer(II)-Salz |
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 -> Organic Acids, Metal Salts |
| Kosmetika | Skin conditioning |
| Dichte | 1.9 at 68 °F (USCG, 1999) - Denser than waterwill sink1.92 at 21.9℃ |
| Color/Form | Blue-green hydroscopic powder |
| Decomposition | When heated to decomposition it emits acrid smoke & irritating fumes. |
| Schmelzpunkt | 239 °F (USCG, 1999)115°C |
| Food Contact Substances | FCS -> FDA Cumulative Estimated Daily Intake (CEDI)FCS -> FDA Inventory of Food Contact Substances Listed in 21 CFR |
| Brechungsindex | INDEX OF REFRACTION: 1.545, 1.550SOL 7.2 G/100 CC COLD WATER20 G/100 CC HOT WATER /MONOHYDRATE/ |
| Physical Description | Cupric acetate appears as a blue-green crystalline solid. The primary hazard is the threat to the environment. Immediate steps should be taken to limit its spread to the environment. It is used as an insecticide, in the preparation of other chemicals, as a fungicide, and mildew preventive.Blue-green hygroscopic solid[HSDB] Green, odorless, hygroscopic crystalsSoluble in water[Alfa Aesar MSDS] |
| Other Experimental Properties | Dark green, monoclinic crystalsexists in dimeric unitsmp: 115 °Cdecomp @ 240 °Cdensity: 1.882. Sol in water, alcoholslightly sol in ether, glycerol. /Monohydrate/Efflorescent /Monohydrate/Odorless /Monohydrate/ |
| Dampfdichte | 6.9 (vs air) |
| Dampfdruck | 0.002Pa at 25℃ |
| Lagerbedingungen | Inert atmosphere,Room Temperature |
| Löslichkeit | DMSO (Slightly, Heated), Methanol (Slightly, Heated)Soluble in water and alcohol. Slightly soluble in ether and glycerol. |
| Aggregatzustand | Powder |
| Farbe | Green to blue |
| Flame Color | Green |
| Merck | 14,2624 |
| BRN | 3595638 |
| Stabilität | hygroscopic |
| Kosmetik-Inhaltsstoffe Funktionen | SKIN CONDITIONING |
| InChI | 1S/2C2H4O2.Cu/c2*1-2(3)4/h2*1H3,(H,3,4)/q+2/p-2 |
| InChIKey | OPQARKPSCNTWTJ-UHFFFAOYSA-L |
| SMILES | CC(=O)O[Cu]OC(C)=O |
| LogP (Verteilungskoeffizient) | -0.285 (est) |
| Oberflächenspannung | 72mN/m at 1.01-1.08g/L and 21.2-21.6℃ |
| CAS Datenbank | 142-71-2(CAS DataBase Reference) |
| EPA chemische Informationen | Cupric acetate (142-71-2) |
Sicherheit & Vorschriften
| GHS-Einstufung | This chemical does not meet GHS hazard criteria for 6.8% (41 of 605) of reports.DangerH301 (19.8%): Toxic if swallowed [Danger Acute toxicity, oral]P260, P262, P264, P264+P265, P270, P273, P280, P301+P316, P301+P317, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P321, P330, P361+P364, P363, P391, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 605 reports by companies from 25 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.Not Classified |
|---|---|
| Regulatorische Informationen | Chemical: Acetic acid, copper(2+) saltStatus: Active Update: 27-03-2023 https://echa.europa.eu/registration-dossier/-/registered-dossier/5859Copper (II) 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 - Acetic acid, copper(2+) salt: Human health tier I assessment |
| DOT-Kennzeichnung | Class 9 |
| Brandgefahren | Special Hazards of Combustion Products: Irritating vapors of acetic acid may form in fires. (USCG, 1999) |
| Brandpotenzial | It is noncombustible. |
| Gesundheitsgefahren | Inhalation of dust causes irritation of throat and lungs. Ingestion of large amounts causes violent vomiting and purging, intense pain, collapse, coma, convulsions, and paralysis. Contact with solutions irritates eyescontact with solid causes severe eye surface injury and irritation of skin. (USCG, 1999) |
| Gefahrenübersicht | A skin irritantMay cause severe eye injuryInhalation of dust causes throat and lung irritationChronic exposure in dogs causes liver degeneration[CHRIS] Acute copper poisoning after ingestion can cause liver injury, methemoglobinemia, and hemolytic anemia. Acute renal failure may result, secondary to massive hemoglobinuria. [Goldfrank, p. 1259] A severe eye irritant that may cause serious injuryToxic by ingestion[Alfa Aesar MSDS] See Copper. |
| Reaktive Gruppe | Salts, Basic |
| Special Reports | NASMedical and Biologic Effects of Environmental Pollutants Copper (1974)USEPAAmbient Water Quality Criteria Doc: Copper (1980) EPA 440/5-80-036.Health Issue Assessment: Copper (1987) EPA/600/8-87/001.Drinking Water Criteria Document for Copper (Final Draft) (1985) EPA-600/X-84-190-1Ambient Water Quality Criteria Doc: Copper (1984) EPA 440/5-84-031. |
| OSHA Standards | Permissible Exposure Limit: Table Z-1 8-hr Time Weighted Avg: 1 mg/cu m. /Copper dusts and mists (as Cu)/ |
| Reactivity Profile | Salts, basic, such as CUPRIC ACETATE, are generally soluble in water. The resulting solutions contain moderate concentrations of hydroxide ions and have pH's greater than 7.0. They react as bases to neutralize acids. These neutralizations generate heat, but less or far less than is generated by neutralization of the bases in reactivity group 10 (Bases) and the neutralization of amines. They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible. |
| Air and Water Reactions | Water soluble. |
| Brandbekämpfung | Excerpt from ERG Guide 171 [Substances (Low to Moderate Hazard)]: |
| Erste Hilfe | INHALATION: move to fresh air. |
| Expositionsschutz und Persönliche Schutzausrüstung | 0.01 [mg/m3], respirable fraction (Cu, inorganic cmpnds)[German Research Foundation (DFG)] |
| Reinigungsverfahren | Environmental consideration - land spill: Dig a pit, pond, lagoon, holding area to contain liquid or solid material. /SRP: If time permits, pits, ponds, lagoons, soak holes, or holding areas should be sealed with an impermeable flexible membrane liner./ Cover solids with a plastic sheet to prevent dissolving in rain or fire fighting water.Environmental consideration - water spill: Neutralize with agricultural lime (calcium oxide), crushed limestone (calcium carbonate), or sodium bicarbonate (NaHCO3). Adjust pH to neutral (pH= 7). Use mechanical dredges or lifts to remove immobilized masses of pollutants & precipitates. |
| Freisetung ohne Brand | Excerpt from ERG Guide 171 [Substances (Low to Moderate Hazard)]: |
| Entsorgungsverfahren | SRP: At the time of review, criteria for land treatment or burial (sanitary landfill) disposal practices are subject to significant revision. Prior to implementing land disposal of waste residue (including waste sludge), consult with environmental regulatory agencies for guidance on acceptable disposal practices. |
| Preventive Measures | If material not involved in fire: Keep material out of water sources & sewers. Build dikes to contain flow as necessary.Personnel protection: Keep upwind. Avoid breathing vapors or dusts. Wash away any material which may have contacted the body with copious amt of water or soap & water.SRP: Local exhaust ventilation should be applied wherever there is an incidence of point source emissions or dispersion of regulated contaminants in the work area. Ventilation control of the contaminant as close to its point of generation is both the most economical and safest method to minimize personnel exposure to airborne contaminants.SRP: The scientific literature for the use of contact lenses in industry is conflicting. The benefit or detrimental effects of wearing contact lenses depend not only upon the substance, but also on factors including the form of the substance, characteristics and duration of the exposure, the uses of other eye protection equipment, and the hygiene of the lenses. However, there may be individual substances whose irritating or corrosive properties are such that the wearing of contact lenses would be harmful to the eye. In those specific cases, contact lenses should not be worn. In any event, the usual eye protection equipment should be worn even when contact lenses are in place. |
| Isolation and Evacuation | Excerpt from ERG Guide 171 [Substances (Low to Moderate Hazard)]: |
| Minimum Risk Level | Acute Oral: 0.01 mg/kg/day (L134) Intermediate Oral: 0.01 mg/kg/day (L134) |
| Threshold Limit Values (TLV) | 1.0 [mg/m3], as Cu8 hr Time Weighted Avg (TWA): 1 mg/cu m. /Copper dusts and mists, as Cu/8 hr Time Weighted Avg (TWA): 0.2 mg/cu m. /Copper fume/Excursion Limit Recommendation: Excursions in worker exposure levels may exceed 3 times the TLV-TWA for no more than a total of 30 minutes during a work day, and under no circumstances should they exceed 5 times the TLV-TWA, provided that the TLV-TWA is not exceeded. /Copper fume, and copper dusts and mists, as Cu/ |
| Permissible Exposure Limit (PEL) | 1.0 [mg/m3], as Cu |
| Protective Action Criteria (PAC) | 8.6 [mg/m3]17 [mg/m3]99 [mg/m3] |
| Wechselwirkungen | The effect of cupric acetate on dimethylnitrosamine induced hepatocarcinogenesis in rats was investigated. The surviving rats in the group given dimethylnitrosamine (25 ppm) in the drinking water alone were killed at 26 wk and it was found that 12 of 16 rats had developed liver tumors. In the group given dimethylnitrosamine and cupric acetate (sc injections of 2 copper/kg once a week for 26 wk), 7 of 22 rats developed liver tumors. The incidence of liver tumors in rats given dimethylnitrosamine and cupric acetate was thus only about 40% of that in rats given dimethylnitrosamine alone. No tumor was observed in the group given saline or cupric acetate alone. The thymidine incorporation into the liver DNA of rats given dimethylnitrosamine was significantly suppressed by the administration of cupric acetate. The methylation of liver DNA in rats given a single dose of dimethylnitrosamine was also significantly suppressed by sc injection of cupric acetatethe formation of both O6-methylguanine and 7-methylguanine was reduced. This result suggests that sc injection of cupric acetate may have a suppressive effect on the initiation of carcinogenesis in the liver.Hepatic lesions by D-L-ethionine in rats produce a significant increase in the blood serum xanthine dehydrogenase activity. Cupric acetate is a potent inhibitor (Ki = 3.42 X 10(-6) M) of the xanthine dehydrogenase activity. Ethionine protects against the inhibitory effect of cupric acetate by formation of a copper complex with behaviour different from that of free ethionine.The effects of copper acetate and aflatoxin dietary supplements on serum vitamins A and E, albumin, cholesterol and the formed elements of blood in male rats were investigated. CuAc and aflatoxin dietary supplements were 0.5% and 7.8 ppm, respectively. Vitamins A and E, red blood cell count (RBC), mean cell volume (MCV), mean cell Hb content (MCHC) and hematocrit (Hct) were not significantly altered by either supplement while albumin and cholesterol was significantly elevated in groups receiving CuAc or aflatoxin. Serum Hb (HBG) was depressed in animals receiving aflatoxin + CuAc supplement while the WBC (white blood cell) count was depressed in both groups receiving CuAc while aflatoxin had no effect. |
| Gesundheitliche Auswirkungen | People must absorb small amounts of copper every day because copper is essential for good health, however, high levels of copper can be harmful. Very-high doses of copper can cause damage to your liver and kidneys, and can even cause death. Copper may induce allergic responses in sensitive individuals. (L278, L279) |
| Ökotoxizitätswerte | LC50 Palaemonetes pugio 37.0 mg/l/96 hr (95% confidence limit 12.7-110.9) /Static bioassay/LC50 Pimephales promelas (fathead minnow) 0.39 mg/l/96 hr (95% confidence limit 0.30-0.51) /Static bioassay/EC50 Selenastrum capricornatum (green alga) 85 ug/l/14 days /Cell volume bioassay/EC50 Thalassiosira pseudonana (alga, saltwater) 5 ug/l/72 hr /Growth rate bioassay/For more Ecotoxicity Values (Complete) data for COPPER(II) ACETATE (9 total), please visit the HSDB record page. |
| Unerwünschte Wirkungen | Occupational hepatotoxin - Secondary hepatotoxins: the potential for toxic effect in the occupational setting is based on cases of poisoning by human ingestion or animal experimentation. |
| Expositionspfade | Oral (L277)inhalation (L277)dermal (L277) |
| Toxizitätsübersicht | Excess copper is sequestered within hepatocyte lysosomes, where it is complexed with metallothionein. Copper hepatotoxicity is believed to occur when the lysosomes become saturated and copper accumulates in the nucleus, causing nuclear damage. This damage is possibly a result of oxidative damage, including lipid peroxidation. Copper inhibits the sulfhydryl group enzymes such as glucose-6-phosphate 1-dehydrogenase, glutathione reductase, and paraoxonases, which protect the cell from free oxygen radicals. It also influences gene expression and is a co-factor for oxidative enzymes such as cytochrome C oxidase and lysyl oxidase. In addition, the oxidative stress induced by copper is thought to activate acid sphingomyelinase, which lead to the production of ceramide, an apoptotic signal, as well as cause hemolytic anemia. Copper-induced emesis results from stimulation of the vagus nerve. (L277, T49, A174, L280) |
| Signs and Symptoms | Breathing high levels of copper can cause irritation of the nose and throat. Ingesting high levels of copper can cause nausea, vomiting, diarrhea, headache, dizziness, and respiratory difficulty. (L278, L279) |
| Carcinogen Classification | No indication of carcinogenicity to humans (not listed by IARC). |
| Non-Human Toxicity Excerpts | Chronic poisoning of rats with copper acetate (0.125% in the drinking water for 30 days) caused no liver necrosis that could be detected morphologically or by measurement of serum transaminases, but upon isolation and perfusion of the liver, reduced bile and bromsulfalein secreting capacities were found. Accumulation of copper in the hepatocytes may thus impair liver function before overt structural damage becomes evident.Changes in the follicle stimulating hormone and luteinizing hormone secretion associated with the induction of ovulation by intravenous injection of 5 mg copper acetate were observed in the ferret. Conscious estrus ferrets with copper acetate injection caused a great initial increase in plasma luteinizing hormone concentration. The anestrus ferrets had an initial surge in plasma luteinizing hormone content which was followed by a steady decline toward the control values. The changes in plasma follicle stimulating hormone concentration produced by copper acetate were similar but less pronounced.Copper acetate was tested for teratogenicity and lethality in 8 day chicken embryos. The parameters measured were early deaths, recorded within 2 days of injection, late deaths of malformed embryos, late deaths of nonmalformed embryos, and malformed survivors. Embryotoxicity was seen in chicken embryos that were tested with copper acetate, but was not as significant as dithiocarbamates.There are limited data concerning toxicity of copper in experimental animals. Heavy accumulation of copper was observed in the liver and kidneys of rats maintained for 16 mo on a diet supplemented with 5,000 ppm copper acetate. Similar depositions were seen in the liver and kidney as well as the brain and the large and small bowel in rats exposed to 1250 ppm cupric acetate monohydrate in the drinking water for up to 902 days.For more Non-Human Toxicity Excerpts (Complete) data for COPPER(II) ACETATE (12 total), please visit the HSDB record page. |
| Toxicity Data | LD50: 501 mg/kg (Oral, Rat) (L339) LD50: 20 mg/kg (Intravenous, Mouse) (L339) |
| Acceptable Daily Intakes | The available human data indicate that gastrointestinal distress occurred following ingestion of solutions that contained 5-7 mg of copper and other unknown chemicals as a single dose. These data were used to derive a 1 day health advisory of 1.3 mg/l which, when spread over a day, should provide protection from these acute effects. Since the effects appear to be local irritation, this health advisory is recommended for both the child and the adult. There are no data indicating that human exposure to copper results in chronic toxic effects. Furthermore, there is a nutritional requirement for copper and acute effects appear to be the effects of concern. Therefore, the one day health advisory, 1.3 mg/l, will also be used as the adjustable acceptable daily intake. /Copper/ |
| Non-Human Toxicity Values | LD50 Rat Oral 595 mg/kg body weight [equivalent copper dose: 208 mg Cu/kg body weight /from table/ |
| CERCLA-Meldepflichtmengen | Persons in charge of vessels or facilities are required to notify the National Response Center (NRC) immediately, when there is a release of this designated hazardous substance, in an amount equal to or greater than its reportable quantity of 100 lb or 45.4 kg. The toll free number of the NRC is (800) 424-8802In the Washington D.C. metropolitan area (202) 426-2675. The rule for determining when notification is required is stated in 40 CFR 302.4 (section IV. D.3.b). |
| Clean Water Act Anforderungen | Designated as a hazardous substance under section 311(b)(2)(A) of the Federal Water Pollution Control Act and further regulated by the Clean Water Act Amendments of 1977 and 1978. These regulations apply to discharges of this substance.The permissible concn of total recoverable copper in water to protect freshwater aquatic life is 5.6 ug/l as a 24 hr avg. The log of this concn should not exceed the numerical value of log (0.94 In (hardness) -1.23). The corresponding value to protect saltwater aquatic life is 4.0 ug/l as a 24 hr avg, and should not exceed 23 ug/l at any time. /Total recoverable copper/Toxic pollutant designated pursuant to section 307(a)(1) of the Clean Water Act and is subject to effluent limitations. /Copper and compounds/Toxic pollutant designated pursuant to section 307(a)(1) of the Federal Water Pollution Control Act and is subject to effluent limitations. /Copper and cmpd/ |
| Landesrichtlinien für Trinkwasser | (AZ) ARIZONA 1300 ug/l /Copper/ |
| Federal Drinking Water Standards | EPA 1300 ug/l (Action Level) /Copper/ |
| Bundesrichtlinien für Trinkwasser | EPA 1000 ug/l /Copper/ |
| F | 3-10 |
| Wassergefährdungsklasse (WGK) | 3 |
| TSCA-Inventar-Status | TSCA listed |
| UN-Transportnummer | UN 3077 9/PG 3 |
| Zollcode | 29152990 |
| RTECS-Nr. | AG3480000 |
| R-Sätze (R) | 22-36/37/38-50/53 |
| Toxizität | mouse,LD50,intraperitoneal,2500ug/kg (2.5mg/kg),Biochemical Pharmacology. Vol. 30, Pg. 771, 1981. |
| Gefahrensymbole | Xn,N |
| Sicherheitshinweise (S) | 26-60-61-37/39-29 |
| Gefahrenklasse | 9Acute Tox. 4 OralAquatic Acute 1Aquatic Chronic 2Eye Dam. 1Skin Corr. 1B |
| Lagerklasse | 8B - Non-combustible corrosive hazardous materials |
| Gefahrstoffdaten | 142-71-2(Hazardous Substances Data) |
Anwendungen & Verwendung
Beschreibung
Copper (II) acetate, also referred to as cupric acetate, is the chemical compound with the formula Cu(OAc)22 where OAc- is acetate (CH3CO2-). The hydrated derivative, which contains one molecule of water for each Cu atom, is available commercially. Anhydrous Cu(OAc)2 is a dark green crystalline solid, whereas Cu2(OAc)4(H2O)2 is more bluish-green. Since ancient times, copper acetates of some form have been used as fungicides and green pigments. Today, copper acetates are used as reagents for the synthesis of various inorganic and organic compounds. Copper acetate, like all copper compounds, emits a blue-green glow in a flame.
History
Copper (II) acetate was historically prepared in vineyards, since acetic acid is a byproduct of fermentation. Copper sheets were alternately layered with fermented grape skins and dregs left over from wine production and exposed to air. This would leave a blue substance on the outside of the sheet. This was then scraped off and dissolved in water. The resulting solid was used as a pigment, or combined with arsenic trioxide to form copper acetoarsenite, a powerful insecticide and fungicide called Paris Green or Schweinfurt Green. During the Second World War copper acetate was used as shark repellent . Under war conditions, before adoption it has been tested only very briefly (while in general successfully). The source says copper acetate does repel sharks in some situations but not in all.
Verwenden
Used as a catalyst or oxidizing agent in organic syntheses