Copper(II) oxalate

Blue-white powder

Bluish-green powder

Solubility: 0.00253 g/100 ml water @ 25 °C /Hemihydrate/

Sol in ammonium hydroxide, insol in acetone, acid; Molecular wt 160.57; blue whitish crystals /Hemihydrate/

Practically insol in water, alc, ether, acetic acid; sol in ammonium hydroxide

Cupric oxalate is an odorless bluish-white solid. Denser than water and insoluble in water. Hence sinks in water. Used as a catalysts for organic reactions.

Blue-white solid; Practically insoluble in water; [Merck Index] Blue or white powder; [MSDSonline]

Warning

H302+H312 (98.2%): Harmful if swallowed or in contact with skin [Warning Acute toxicity, oral; acute toxicity, dermal]

P264, P270, P273, P280, P301+P317, P302+P352, P317, P321, P330, P362+P364, P391, and P501 (click each P-code to see the statement)

Aggregated GHS information provided per 167 reports by companies from 5 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.

Chemical: Ethanedioic acid, copper(2+) salt (1:1)

The 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.)

Inhalation causes irritation of nose and throat. Ingestion of very large amounts may produce symptoms of oxalate poisoning; watch for edema of the glottis and delayed constriction of esophagus. Contact with eyes causes irritation. (USCG, 1999)

NAS; Medical and Biologic Effects of Environmental Pollutants Copper (1974)

USEPA; Ambient Water Quality Criteria Doc: Copper (1980) EPA 440/5-80-036.

USEPA; Health Issue Assessment: Copper (1987) EPA/600/8-87/001.

USEPA; Drinking Water Criteria Document for Copper (Final Draft) (1985) EPA-600/X-84-190-1

USEPA; Ambient Water Quality Criteria Doc: Copper (1984) EPA 440/5-84-031.

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) 424-8802; In 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).

... MATERIALS WHICH ARE TOXIC AS STORED OR WHICH CAN DECOMP INTO TOXIC COMPONENTS ... SHOULD BE STORED IN A COOL, WELL-VENTILATED PLACE, OUT OF DIRECT RAYS OF THE SUN, AWAY FROM AREAS OF HIGH FIRE HAZARD, & SHOULD BE PERIODICALLY INSPECTED ... INCOMPATIBLE MATERIALS SHOULD BE ISOLATED FROM EACH OTHER. /OXALATES/

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.

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.

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.

1.0 [mg/m3], as Cu

8 hr Time Weighted Avg (TWA): 1 mg/cu m /Copper dusts and mists, as Cu/

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 dusts and mists, as Cu/

12 [mg/m3]

130 [mg/m3]

790 [mg/m3]

Birds varied in their response to food treated with a taste repellent cupric oxalate /which/ reduced the amt of treated food consumed by captive birds having easy access to unlimited alternate food supplies, although cupric oxalate was ineffective against free ranging birds. Once cupric oxalate /was/ removed from food, food consumption returned to normal.

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) 424-8802; In 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).

Cupric oxalate is 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. This designation includes any isomers and hydrates, as well as any solutions and mixtures containing this substance.

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/

Used as an organic catalyst, a polyformaldehyde stabilizer, an anticaries agent, and in seed treatments to repel birds and rodents; [Merck Index]

Farming (Pesticides) [Category: Industry]

As catalyst for organic reactions; as stabilizer for acetylated polyformaldehyde; in seed treatments to repel birds and rodents.

In anticaries compositions.

As a stabilizer for acetylated polyformaldehyde and as a catalyst in organic reactions.

Prepared by precipitation from a mixture of a copper(II) salt and sodium oxalate solution

Prepd by reaction of cupric sulfate with oxalic acid: David, Bull Soc Chim France p 719 (1960).