Agent Name

Potassium arsenite

CAS Number

10124-50-2

Formula

As-H3-O3.x-K

Major Category

Metals

Synonyms

Arsenenous acid, potassium salt; Arsenious acid (H3AsO3), potassium salt; Arsenious acid, potassium salt; Arsenite de potassium [French]; Arsonic acid, potassium salt; Kaliumarsenit [German]; Potassium metaarsenite; Potassium metaarsenite, acid; [ChemIDplus] UN1678

Category

Arsenic Compounds, Inorganic

Description

White hygroscopic solid; Exact composition varies in commercial product; [Merck Index]

Sources/Uses

Used in mirror manufacture to reduce the silver salt to metallic silver; formerly in insecticides, weed killers, fungicides, and wood preservatives; as laboratory chemical; for various medical and veterinary applications (especially in solution); [HSDB]

Comments

A strong irritant; [Hawley] A skin, eye, and respiratory tract irritant; Can cause arsenic poisoning; [ICSC] A skin irritant; [CAMEO] See "Arsenic " and the linked occupational diseases.

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

IARC Carcinogen

Known Carcinogen

NTP Carcinogen

Human Carcinogen

ACGIH Carcinogen

Confirmed Human

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

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Chemical Information

Search ChemIDplus

Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: