AMMONIUM ARSENATE Property

Melting point:

decomposes [CRC10]

Density 

1.990

solubility 

soluble in H2O

form 

powder

color 

white

Water Solubility 

soluble H2O, decomposed by hot H2O [HAW93]

EPA Substance Registry System

Arsenic acid (H3AsO4), diammonium salt (7784-44-3)

Safety

RIDADR 

1546

HazardClass 

6.1(a)

PackingGroup 

II

HS Code 

28429090

Hazard and Precautionary Statements (GHS)

AMMONIUM ARSENATE Chemical Properties,Usage,Production

Chemical Properties

Ammonium arsenate a combustible, white powder or plate-like colorless crystal.

General Description

A white crystalline solid. Toxic by ingestion.

Air & Water Reactions

Water soluble; decomposes in hot water [Handbook of Chemistry and Physics].

Reactivity Profile

Solutions of AMMONIUM ARSENATE are acidic. They neutralize bases in reactions that generate heat, but less or far less than is generated by neutralization of inorganic acids, inorganic oxoacids, and carboxylic acids. Compounds usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible.

Health Hazard

Highly toxic, may be fatal if inhaled, swallowed or absorbed through skin. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.

Fire Hazard

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Containers may explode when heated. Runoff may pollute waterways.

Safety Profile

Confirmed human carcinogen. A poison. When heated to decomposition it emits very toxic fumes of As, NOx, and NH3. See also ARSENIC.

Shipping

UN1546 Ammonium arsenate, Hazard Class: 6.1; Labels: 6.1-Poisonous materials.

Incompatibilities

Hydrogen gas forms highly toxic arsine gas on contact with inorganic arsenic.

Waste Disposal

Consult with environmental regulatory agencies for guidance on acceptable disposal practices. Generators of waste containing this contaminant (≥100 kg/mo) must conform with EPA regulations governing storage, transportation, treatment, and waste disposal.