Ammonium arsenate

Ammonium arsenate
Names
	Other names Ammonium orthoarsenate
Identifiers
CAS Number	24719-13-9 ;
3D model (JSmol)	Interactive image;
ChemSpider	11663170 ;
ECHA InfoCard	100.029.152
EC Number	246-428-3;
PubChem CID	18762179;
CompTox Dashboard (EPA)	DTXSID0036895 ;
	InChI InChI=1S/AsH3O4.3H3N/c2-1(3,4)5;;;/h(H3,2,3,4,5);31H3 Key: SNSGFXVMSAYXTC-UHFFFAOYSA-N ; InChI=1/AsH3O4.2H3N/c2-1(3,4)5;;/h(H3,2,3,4,5);21H3 Key: XPVHUBFHKQQSDA-UHFFFAOYAT;
	SMILES [NH4+].[NH4+].[NH4+].[O-][As](=O)([O-])[O-];
Properties
Chemical formula	(NH4)3AsO4 . 3 H2O
Molar mass	247.1 (trihydrate)
Solubility in water	Soluble
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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	Infobox references

Ammonium arsenate is the inorganic compound with the formula (NH₄)₃AsO₄. It is prepared by treating a concentrated solution of arsenic acid with ammonia, resulting in precipitation of colorless crystals of the trihydrate.[1] Upon heating, it releases ammonia.

Like other compounds of arsenic, it is classified as an IARC Group 1 carcinogen, i.e. carcinogenic to humans.[2]

Acid salts are also known, including diammonium arsenate and ammonium dihydrogen arsenate.

References

"Ammonium Orthoarsenate" in Handbook of Preparative Inorganic Chemistry, 2nd Ed. Edited by G. Brauer, Academic Press, 1963, NY. Vol. 1. p. 602.
"Group 1: Carcinogenic to humans". IARC Monographs on the Evaluation of Carcinogenic Risks to Humans. IARC. Archived from the original on 2010-07-01. Retrieved 2010-05-04.

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[1] "Ammonium Orthoarsenate" in Handbook of Preparative Inorganic Chemistry, 2nd Ed. Edited by G. Brauer, Academic Press, 1963, NY. Vol. 1. p. 602.

[2] "Group 1: Carcinogenic to humans". IARC Monographs on the Evaluation of Carcinogenic Risks to Humans. IARC. Archived from the original on 2010-07-01. Retrieved 2010-05-04.