Ammonium arsenate

Names
Other names

Ammonium orthoarsenate

Identifiers

CAS Number

* 24719-13-9 Y

3D model (JSmol)

* Interactive image

ChemSpider |

* 11663170 Y

EC Number |

* 246-428-3

PubChem CID

* 18762179

InChI

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

Key: SNSGFXVMSAYXTC-UHFFFAOYSA-N Y

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

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).

Y verify (what is YN ?)
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

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. http://monographs.iarc.fr/ENG/Classification/crthgr01.php.

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*[CID]: Compound ID