Name | Magnesium arsenate |
Synonyms | Magnesiumarsenat naturalroesslerite MAGNESIUM ARSENATE Magnesium arsenate magnesiumo-arsenate arseniatedemagnesium magnesiumarsenatephosphor Arsenic acid, magnesium salt Trimagnesium diarsenate octahydrate |
CAS | 10103-50-1 |
EINECS | 233-285-7 |
InChI | InChI=1/AsH3O4.Mg/c2-1(3,4)5;/h(H3,2,3,4,5);/q;+2/p-2 |
Molecular Formula | As2Mg3O8 |
Molar Mass | 350.75 |
Density | 2.60-2.61 |
Water Solubility | insoluble H2O [HAW93] |
Color | Monoclinic, white crystals |
Solubility Product Constant(Ksp) | pKsp: 19.68 |
Stability | Stable. Non-combustible. |
UN IDs | 1622 |
Hazard Class | 6.1(a) |
Packing Group | II |
Toxicity | LDLo orl-rat: 280 mg/kg TXAPA9 1,156,59 |
Raw Materials | Magnesium |
EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
production method | preparation method 20g magnesium sulfate heptahydrate is dissolved in 1L of water to prepare a solution, 16.9g disodium arsenate heptahydrate and 4.5g sodium bicarbonate are dissolved in 800mL of water to prepare a solution, the two solutions are mixed, and the amorphous precipitate obtained by reaction is placed for 24h to obtain magnesium arsenate octahydrate. |
category | toxic substances |
toxicity classification | highly toxic |
acute toxicity | oral administration-rat LDL0: 280 mg/kg; Oral administration-mouse LD50: 315 mg/kg |
flammability hazard characteristics | non-combustible; thermal decomposition of toxic arsenide fumes |
storage and transportation characteristics | warehouse ventilation and low temperature drying; separate from food storage and transportation |
fire extinguishing agent | mist water, sand |
occupational standard | TWA 0.01 mg (arsenic)/m3 |
toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |