7784-44-3

Usage

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.

InChI:InChI=1/AsH3O4.2H3N/c2-1(3,4)5;;/h(H3,2,3,4,5);2*1H3

Upstream product

• 7778-39-4 orthoarsenic acid 
• 7722-84-1 dihydrogen peroxide 
• 7774-41-6 hydrous arsenic acid 
• 7664-41-7 ammonia 

Relevant academic research and scientific papers

Synthesis and physicochemical study of M4Na2V 10O28 · 10H2O (M = K, Rb, NH 4)

The formation conditions and physicochemical properties of binary decavanadates M4Na2V10O28 · 10H2O (M = K, Rb, NH4), synthesized by crystallization from saturated solutions of the NaVOsub

Cs2Pd3(P2O7)2 and Cs2Pd3(As2O7)2: A 3D Palladium Phosphate with a Tunnel Structure and a 2D Palladium Arsenate Containing Strings of Palladium Atoms

Cs2Pd3(P2O7)2 (1) and Cs2Pd3(As2O7)2 (2) have been synthesized by molten flux reactions and characterized by single-crystal X-ray diffraction. The structure of 1 consists of discrete PdIIO4 squares which are linked by P2O 7 groups via corner-sharing to generate a 3D framework containing 12-ring channels in which Cs+ cations are located. Compound 2 adopts a 2D layer structure with the interlayer space filled with Cs+ cations. Within a layer there are PdO4 squares and As 2O7 groups fused together via corner-sharing. Adjacent layers are stacked such that strings of Pd atoms are formed. The PdO 4 squares show eclipsed and staggered stacks with alternate short and long Pd...Pd distances. The two compounds adopt considerably different structures although they have the same general formula: Cs2Pd 3(X2O7)2. Compound 2 is the first palladium arsenate reported. Crystal data for 1: orthorhombic, space group Cmc21 (No. 36), a = 7.6061(4) A, b = 14.2820(7) A, c = 14.1840(7) A, and Z = 4. Crystal data for 2: tetragonal, space group P4/n (No. 85), a = 16.251(1) A, c = 5.9681(5) A, and Z = 4.

Synthesis and crystal structure of a novel galloarsenate containing the As3O105- triarsenate anion: Cs2Ga3As5O18

The synthesis and crystal structure of Cs2Ga3As5O18 in which the Ga atoms are octahedrally and square-pyramidally coordinated are described: the three-dimensional structure is unique and contains the very rare triarsenate anion As3O105-.

CsTi2As3O12: A cesium titanium(IV) arsenate with an open framework structure

A new ternary titanium(IV) arsenate, CsTi2As3O12, has been synthesized by a flux method and structurally characterized by single-crystal X-ray diffraction. It crystallizes in the cubic space group Ia3d (No. 230) with a = 20.495(3) ?, V = 8609(2) ?3, Z = 32, and R = 0.0242. The framework consists of vertex-sharing TiO6 octahedra and AsO4 tetrahedra, enclosing large cavities in which the cesium atom sites are partially occupied. The cavities are interconnected to form 3-dimensional channels. The structure is considerably different from those of NASICON and langbeinite.

Effect of hydrostatic pressure on the antiferroelectric phase transitions in ammonium dihydrogen arsenate NH4H2AsO4 and deuterated analogue

Effect of hydrostatic pressure on the antiferroelectric phase transitions in NH4H2As04 and deuterated analogue (deuterium concentration ～80%) was studied by dielectric constant measurements at high pressures up to about 0.