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]

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

Anemia, Aplastic

Neurotoxin

Sensorimotor Neuropathy

Hepatotoxin

Hepatotoxin, Secondary

Reproductive Toxin

Yes

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Processes

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