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MAGNESIUM ARSENATE

CAS No.
10103-50-1
Chemical Name:
MAGNESIUM ARSENATE
Synonyms
hoernesite;caswellno529;Magnesiumarsenat;MAGNESIUM ARSENATE;naturalroesslerite;magnesiumo-arsenate;arseniatedemagnesium;magnesiumarsenatephosphor;Arsenic acid,magnesium salt;arseniatedemagnesium(french)
CBNumber:
CB3138762
Molecular Formula:
As2Mg3O8
Molecular Weight:
350.75
MDL Number:
MFCD00049483
MOL File:
10103-50-1.mol
Last updated:2026-05-26 16:21:34

MAGNESIUM ARSENATE Properties

Density 2.60-2.61
color Monoclinic, white crystals
Water Solubility insoluble H2O [HAW93]
Solubility Product Constant (Ksp) pKsp: 19.68
Stability Stable. Non-combustible.
REACH Annex XVII Substances List Arsenic acid, magnesium salt (10103-50-1)
FDA UNII I15RML7CUZ
EPA Substance Registry System Magnesium arsenate (10103-50-1)

SAFETY

Risk and Safety Statements

RIDADR  UN 1622
TSCA  TSCA listed
HazardClass  6.1
PackingGroup  II
Hazardous Substances Data 10103-50-1(Hazardous Substances Data)
Toxicity LDLo orl-rat: 280 mg/kg TXAPA9 1,156,59

MAGNESIUM ARSENATE Chemical Properties, Uses, Production

Chemical Properties

White powder. When pure it is insoluble in water. Technical material is highly hydrated and made from magnesium carbonate and arsenic acid.

Uses

Insecticide.

General Description

A white crystals or powder when pure. Insoluble in water. Very toxic by inhalation and ingestion. Used as an insecticide.

Air & Water Reactions

Insoluble in water.

Reactivity Profile

MAGNESIUM ARSENATE has generally low reactivity.

Hazard

Toxic by ingestion and inhalation.

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. Poison by ingestion. When heated to decomposition it emits toxic fumes of arsenic. See also ARSENIC COMPOUNDS.

MAGNESIUM ARSENATE Preparation Products And Raw materials

Raw materials

Preparation Products

Global Suppliers ( 17)
Supplier Tel Email Country ProdList Advantage
3B Pharmachem (Wuhan) International Co.,Ltd. 18930552037 3bsc@sina.com China 15813 69
Shaanxi Dideu Newmaterial Co., Ltd. 029-63373950 17392216152 1035@dideu.com China 9991 58
XIAMEN AMITY INDUSTRY AND TRADE CO., LTD. +8618950047208 ellena@amitychem.com China 43392 58
Shaanxi Didu New Materials Co. Ltd +86-86-17392712779 +86-13289823923 1090@dideu.com China 8651 58
Magnesiumarsenat Trimagnesium diarsenate octahydrate magnesiumarsenatephosphor magnesiumo-arsenate naturalroesslerite Arsenic acid,magnesium salt MAGNESIUM ARSENATE arseniatedemagnesium arseniatedemagnesium(french) arsenicacid(h3aso4),magnesiumsalt caswellno529 epapesticidechemicalcode013504 hoernesite 10103-50-1 As2Mg3O8 Mg3AsO42 ASH3MGXO4