Copper acetoarsenite

  • Cupric acetoarsenite
  • (Acetato)trimetaarsenitodicopper
  • Paris green
  • Emerald green
  • C.I. pigment green 21
Formula
Cu(C2H3O2)2.3Cu(AsO
Structure
Description
An emerald-green powder.
Uses
The material is used as an insecticide, molluscicide.

Registry Numbers and Inventories.
CAS
12002-03-8
RTECS
GL6475000
RTECS class
Agricultural Chemical and Pesticide
UN (DOT)
1585
Merck
12,2692
Beilstein/Gmelin
NA
RCRA
D004
EPA OPP
22601
Swiss Giftliste 1
G-2879
Austrailia AICS
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C4H6As6Cu4O16
Formula mass
1013.8
Melting point, °C
>345
Density
>1.1 g/cm3 (20 C)
Solubility in water
Insoluble

Hazards and Protection.
Storage
Tightly closed containers. Keep away from heat and water.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Keep material out of water sources and sewers. Land spill: Dig a pit, pond, lagoon, holding area to contain liquid or solid material. Cover solids with a plastic sheet to prevent dissolving in rain or fire fighting water. Water spill: Neutralize with agricultural lime (CaO), crushed limestone (CaCO3), or sodium bicarbonate (NaHCO3). Remove trapped material with suction hoses. Use mechanical dredges or lifts to remove immobilized masses of pollutants and precipitates.
Stability
Stable to air, light.
Incompatibilities
Unstable in acids, bases, and toward hydrogen sulfide

Fire.
Fire fighting
Stay upwind; keep out of low areas. Wear self-contained (positive pressure if available) breathing apparatus and full protective clothing.For small fires, use dry chemical, water spray, or foam. For large fires, use water spray, fog, or foam. Use of water may result in generation of toxic fumes.
Fire potential
Nonflammable.
Hazards
Poisonous, volatile arsenic oxide may be formed in fires. Exposure of dust to flame may cause explosion. When heated, or on contact with acid or acid fumes, it emits highly toxic fumes. Decomposes readily in the presence of water and carbon dioxide to yield phytotoxic arsenical compounds. Can react vigorously with oxidizing materials. Unstable in acids and bases.
Combustion products
Volatile arsenic oxide may be formed in fires.

Health.
Exposure limit(s)
NIOSH REL*: TWA 1 mg/m3 OSHA PEL*: TWA 1 mg/m3 [*Note: REL and PEL also apply to other copper compounds (as Cu) except copper fume.] IDLH 100 mg/m3 (as Cu)
Carcinogin
O, G-A1, I-1, N-1, CP65
Poison_Class
2
Exposure effects
Patients may rapidly become hypotensive. Rapid heart rate may develop secondary to pain, hypovolemia, cardiac effects of arsenic or anxiety. Toxic delirium and encephalopathy are possible complications. Peripheral neuropathy is common. Seizures may occur. Trivalent arsenicals have caused teratogenic and embryotoxic effects in the offspring of pregnant mice, rats, and hamsters when administered orally or parenterally. Fetotoxicity and fetal death are possible, but arsenic is NOT likely to be a significant risk to human reproduction at permissible occupational exposure limits. <br>Arsenic is excreted in the breast milk in both experimental animals and humans. <br>Systemic toxicity was present before any effects were noted on the testes.
   Ingestion
Early symptoms within hours following arsenic ingestion include abdominal pain, vomiting, profuse bloody or watery (rice-water-like) diarrhea, pain in the extremities and muscles, weakness, and flushing of the skin.
   Inhalation
Upper respiratory tract irritation and hoarse voice may result. Acute respiratory failure was seen in a patient with severe arsenic poisoning. Pulmonary edema may occur and be life-threatening. Adult respiratory distress syndrome (ards) has been reported.
   Skin
Avoid any skin contact. See Inhalation.
   Eyes
Inflammation of the eye, photophobia, dimness of vision, diplopia, and tearing may occur. A garlic-like odor may be detected on the breath.

First aid
 
   Ingestion
Gastric decontamination - aggressive decontamination with gastric lavage is recommended. Activated charcoal: administer charcoal as a slurry (240 ml water/30 g charcoal). Usual dose: 25 to 100 g in adults/adolescents.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult.
   Skin
Remove and isolate contaminated clothing and shoes. Remove material from skin immediately. Immediately flush with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin.
   Eyes
Immediately flush with running water for at least 20 minutes.

Transport.
UN number
1585
Response guide
Hazard class
6.1
Packing Group
II
 
USCG CHRIS Code
CAA
 
Std. Transport #
4923220