Agent Name

Arsenic pentoxide

CAS Number

1303-28-2

Formula

As2-O5

Major Category

Metals

Synonyms

Anhydride arsenique [French]; Arsenic acid anhydride; Arsenic anhydride; Arsenic oxide; Arsenic oxide (As2O5); Arsenic pentaoxide; Arsenic(5+) oxide; Arsenic(V) oxide; Diarsenic pentoxide; [ChemIDplus] UN1559

Category

Arsenic Compounds, Inorganic

Description

White deliquescent solid; [Hawley] White odorless powder; Soluble in water (132 g/L at 20 deg C); [MSDSonline]

Sources/Uses

Used as a herbicide and insecticide; Also used in wood preservatives, for dyeing and printing, in colored glass, in metal adhesives, and to make metal arsenates; [HSDB] Used as a fungicide; [Merck Index]

Comments

A skin, eye, and respiratory tract irritant; May cause arsenic poisoning; [ICSC] May cause skin sensitization; [HSDB] Extremely toxic with an oral lethal dose for humans of 5-50 mg/kg, or between 7 drops and 1 teaspoonful for a 150-lb. person; [CAMEO] An irritant; [MSDSonline] See "Arsenic and inorganic compounds" 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
Reproductive Toxin

Yes

Neurotoxin

Sensorimotor Neuropathy

Hepatotoxin

Hepatotoxin, Secondary

Anemia

Anemia, Aplastic

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

Chemical Information

Search ChemIDplus

Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Processes

Industrial Processes with risk of exposure: