London purple

Agent Name
London purple
CAS Number
8012-74-6
Major Category
Pesticides
Synonyms
London purple, solid; London Purple; [ChemIDplus] UN1621
Category
Other Insecticides
Description
Solid; [CAMEO]
Sources/Uses
Formerly used as an insecticide; contains arsenic trioxide, aniline, lime, and ferrous oxide; Made from by-products of the English dye industry; Difficult to safely use due to variations in exact composition; [HSDB] London purple = calcium arsenite; [EPA Pesticides, p. 133]
Comments
Highly toxic by inhalation, skin absorption, and ingestion; [CAMEO] See "Calcium arsenite." See "Arsenic" and the linked occupational diseases.
Restricted
All uses discontinued in the US; [EPA Pesticides, p. 133]
Biomedical References
Search PubMed

Exposure Assessment

BEI
Inorganic arsenic plus methylated metabolites in urine = 35 ug As/L; end of workweek;
TLV (ACGIH)
0.01 mg/m3, as As
PEL (OSHA)
0.01 mg/m3, as As
IDLH (NIOSH)
5 mg/m3, as As

Adverse Effects

Anemia
Aplastic anemia
Neurotoxin
Sensorimotor
Hepatotoxin
Hepatoxic (a) from occupational exposure (secondary effect) or (b) in animal studies or in humans after ingestion
Reproductive Toxin
Yes

Diseases, Processes, and Activities Linked to This Agent

Processes

Industrial Processes with risk of exposure: