Arsenic (As) & arsenic compounds
Arsenic compounds have been used by humans for several thousand years. Historically, arsenic was used for medicinal purposes in the treatment of ailments such as trypanosomiasis, amoebic dysentery and syphilis. Arsenic compounds are currently used as pesticides, wood presevatives and in glass and electronics manufacture. Sodium arsenate (Na2HAsO4) has been used to deback tress, in cattle and sheep dips and also in the control of aquatic weeds. (ref. ID; 6126)
[Diarsenic Trioxide] CAS[1327-53-3] UN1561
Trade name
Arsenic(III) oxide
Chemical formula
As2O3
Purpose for use
Herbicide, insecticide.
Toxicity
LD50 (oral): rat 180-200 mg/kg, mouse 34.4-63.5 mg/kg.
Test organisms
Oligochaeta: Lumbriculus variegatus (ref. ID; 7169)
[Potassium Arsenate(V)] CAS[7784-41-0] UN1677
Chemical formula
KH2AsO4
Test organisms
Protozoa: Euglena gracilis (ref. ID; 3312)
[Sodium Arsenate(V), Heptahydrate] CAS[10048-95-0] UN1685
Chemical formula
Na2HAsO4/7H2O
Chemical characteristics
Water soluble.
Test organisms
Protozoa: Tetrahymena pyriformis (ref. ID; 3554)
Oligochaeta: Dendrodrilus rubidus (ref. ID; 3580, 4481)
Oligochaeta: Eisenia fetida (ref. ID; 4447)
Oligochaeta: Enchytraeus albidus (ref. ID; 4447)
Oligochaeta: Lumbricus rubellus (ref. ID; 3580, 4481, 6860, 6909)
Oligochaeta: Tubifex tubifex (ref. ID; 1318)
[Sodium Arsenite(III)] CAS[7784-46-5] UN2027
= Sodium Metaarsenite
Chemical formula
NaAsO2
Chemical characteristics
Water soluble.
Test organisms
Protozoa: Euglena gracilis (ref. ID; 3312)
Nematoda: Caenorhabditis elegans (ref. ID; 506, 2165)
[AsO3Na]
Test organisms
Protozoa: Colpidium campylum (ref. ID; 6081)
[Na3AsO3]
Test organisms
Oligochaeta: Tubifex tubifex (ref. ID; 6968)
[Disodium Arsenate]
Test organisms
Oligochaeta: Lumbricus terrestris (ref. ID; 7026)
[Soil As Pollution]
Test organisms
Oligochaeta: Review (ref. ID; 6126)
Oligochaeta: Lumbricus rubellus (ref. ID; 6909, 6912)
Oligochaeta: Lumbricus terrestris (ref. ID; 7173)
[Calcium Arsenate]
= Calcium hydroxide-calcium arsenate (1/3)
Trade name
Calcium Arsenate (Japan Date registered 9/27/1948, Date registration annulled 12/28/1976): Kalo
Chemical formula
Ca3(AsO4)2, Ca(OH)2/3Ca3(AsO4)2
Purpose for use
Insecticide.
[Orthoarsenic Acid]
Trade name
Arsenic acid: Dessicant-L-10
Chemical formula
H3AsO4
Purpose for use
Herbicide, insecticide.
Toxicity
LD50 (oral): rat 48-100 mg/kg (young) - 100 mg/kg (old).
[Diarsenic Pentaoxide]
Trade name
Arsenic(V) oxide: Zotox
Chemical formula
As2O5
Purpose for use
Fungicide, herbicide, insecticide.
Toxicity
LD50 (oral): rat 8 mg/kg.