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{{distinguish|Copper arsenite}}
⚫
'''Copper arsenate''' (Cu<sub>3</sub>(AsO<sub>4</sub>)<sub>2</sub>.4H<sub>2</sub>O, or Cu<sub>5</sub>H<sub>2</sub>(AsO<sub>4</sub>)<sub>4</sub>.2H<sub>2</sub>O), also called '''copper orthoarsenate''' or '''tricopper arsenate''' or '''tricopper orthoarsenate''', is an [[insecticide]] used in agriculture. It is also used as a [[herbicide]], [[fungicide]], and a [[rodenticide]]. It is a blue or bluish-green powder insoluble in water and alcohol and soluble in aqueous [[ammonium]] and dilute acids. Its [[CAS number]] is {{CASREF|CAS=7778-41-8}} or {{CASREF|CAS=10103-61-4}}.
{{chembox
| Watchedfields = changed
| verifiedrevid = 443420181
| ImageFile = Copper(II)-arsenate-constituent-ions-2D.png
| ImageSize =
| IUPACName = Copper(II) arsenate
| OtherNames = Copper arsenate
|Section1={{Chembox Identifiers
| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}
| ChemSpiderID = 24279
| InChI = 1/2AsH3O4.3Cu/c2*2-1(3,4)5;;;/h2*(H3,2,3,4,5);;;/q;;3*+2/p-6
| InChIKey = RKYSWCFUYJGIQA-CYFPFDDLAM
| SMILES = [Cu+2].[Cu+2].[Cu+2].[O-][As]([O-])(=O)[O-].[O-][As]([O-])([O-])=O
| StdInChI_Ref = {{stdinchicite|correct|chemspider}}
| StdInChI = 1S/2AsH3O4.3Cu/c2*2-1(3,4)5;;;/h2*(H3,2,3,4,5);;;/q;;3*+2/p-6
| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}
| StdInChIKey = RKYSWCFUYJGIQA-UHFFFAOYSA-H
| CASNo = 7778-41-8
| CASNo_Ref = {{cascite|correct|??}}
| UNII_Ref = {{fdacite|correct|FDA}}
| UNII = EV78GZO3YS
| PubChem = 26065
| RTECS =
}}
|Section2={{Chembox Properties
| Formula = Cu<sub>3</sub>(AsO<sub>4</sub>)<sub>2</sub>
| MolarMass = 468.48 g/mol
| Appearance = blue or bluish green powder
| Density = 5.2 g/cm<sup>3</sup>
| MeltingPtC = 1100
| BoilingPt =
| Solubility = insoluble
| SolubleOther = soluble in [[ammonia]], dilute [[acid]]s
| SolubilityProduct = 7.95{{e|&minus;36}}<ref name="crc">{{cite book |author1=John Rumble |title=CRC Handbook of Chemistry and Physics |date=June 18, 2018 |publisher=CRC Press |isbn=978-1138561632 |pages=5–188|edition=99 |language=English}}</ref>
}}
|Section7={{Chembox Hazards
| FlashPt =
| PEL = TWA 1 mg/m<sup>3</sup> (as Cu)<ref name=PGCH>{{PGCH|0150}}</ref>
| REL = TWA 1 mg/m<sup>3</sup> (as Cu)<ref name=PGCH/>
| IDLH = TWA 100 mg/m<sup>3</sup> (as Cu)<ref name=PGCH/>
}}
|Section8={{Chembox Related
| OtherAnions =
| OtherCations =
}}
}}


⚫
'''Copper arsenate''' (Cu<sub>3</sub>(AsO<sub>4</sub>)<sub>2</sub>·4H<sub>2</sub>O, or Cu<sub>5</sub>H<sub>2</sub>(AsO<sub>4</sub>)<sub>4</sub>·2H<sub>2</sub>O), also called '''copper orthoarsenate''', '''tricopper arsenate''', '''cupric arsenate''', or '''tricopper orthoarsenate''', is a blue or bluish-green powder insoluble in water and alcohol and soluble in aqueous [[ammonium]] and dilute acids. Its [[CAS number]] is {{CASREF|CAS=7778-41-8}} or {{CASREF|CAS=10103-61-4}}.
⚫
'''Copper arsenate hydroxide''' or '''basic copper arsenate''' (Cu(OH)AsO<sub>4</sub>) is a basic variant with CAS number {{CASREF|CAS=16102-92-4}}. It is found naturally as the mineral [[olivenite]]. It is used as an insecticide, fungicide, and [[miticide]]. Its use is banned in Thailand since 2001.[http://www.ipmthailand.org/en/Pesticides/pesticides_banned_abc.htm]


==Uses==
Copper arsenate is also used as a poison in [[slug]] baits.
Copper arsenate is an [[insecticide]] used in agriculture. It is also used as a [[herbicide]], [[fungicide]], and a [[rodenticide]]. It is also used as a poison in [[slug]] baits.


Copper arsenate can also be a misnomer for [[copper arsenite]], especially when meant as a [[pigment]].
Copper arsenate can also be a misnomer for [[copper arsenite]], especially when meant as a [[pigment]].

==Natural occurrences==
Anhydrous copper arsenate, Cu<sub>3</sub>(AsO<sub>4</sub>)<sub>2</sub>, is found in nature as the mineral '''lammerite'''.<ref>{{ cite journal | first1 = F. C. | last1 = Hawthorne | journal = [[American Mineralogist]] | volume = 71 | year = 1986 | pages = 206–209 | title = Lammerite, Cu<sub>3</sub>(AsO<sub>4</sub>)<sub>2</sub>, a modulated close-packed structure | url = http://www.minsocam.org/ammin/AM71/AM71_206.pdf }}</ref> Copper arsenate tetrahydrate, Cu<sub>3</sub>(AsO<sub>4</sub>)<sub>2</sub>·4H<sub>2</sub>O, occurs naturally as the mineral '''rollandite'''.<ref>{{ cite journal | title = Rollandite, Cu<sub>3</sub>(AsO<sub>4</sub>)<sub>2</sub>·4H<sub>2</sub>O, a new mineral | first1 = H. | last1 = Sarp | first2 = R. | last2 = Černý | journal = Eur. J. Mineral. | volume = 12 | year = 2000 | pages = 1045–1050 | doi = 10.1127/0935-1221/2000/0012-1045 | url = https://archive-ouverte.unige.ch/unige:86439 }}</ref>

==Related compounds==
⚫
'''Copper arsenate hydroxide''' or '''basic copper arsenate''' (Cu(OH)AsO<sub>4</sub>) is a basic variant with CAS number {{CASREF|CAS=16102-92-4}}. It is found naturally as the mineral [[olivenite]]. It is used as an insecticide, fungicide, and [[miticide]]. Its use is banned in Thailand since 2001.<ref>{{cite web |url=http://www.ipmthailand.org/en/Pesticides/pesticides_banned_abc.htm |title=Banned pesticides (Sorted by common name) |access-date=2006-01-14 |url-status=dead |archive-url=https://web.archive.org/web/20051122181117/http://www.ipmthailand.org/en/Pesticides/pesticides_banned_abc.htm |archive-date=2005-11-22 }}</ref>


==See also==
==See also==
* [[Lead arsenate]]
*[[Calcium arsenate]]
* [[Calcium arsenate]]
*[[Chromated copper arsenate]]
⚫
*[[Lead arsenate]]
* [[Paris Green]] (copper arsenate-acetate)
*[[Paris Green]] (copper acetoarsenite)
⚫
* [[Chromated copper arsenate]]
* [[Scheele's Green]] (copper arsenite)
*[[Scheele's Green]] (copper arsenite)


==External links==
==References==
{{Reflist}}
⚫
*[http://www.npi.gov.au/database/substance-info/profiles/27.html National Pollutant Inventory - Copper and compounds fact sheet]


==External links==
{{Commons category}}
⚫
*[https://web.archive.org/web/20080302034606/http://www.npi.gov.au/database/substance-info/profiles/27.html National Pollutant Inventory - Copper and compounds fact sheet]


{{Copper compounds}}
{{insecticides}}
{{Insecticides}}


[[Category:Arsenates]]
[[Category:Arsenates]]
[[Category:Copper compounds]]
[[Category:Copper(II) compounds]]
[[Category:Inorganic insecticides]]
[[Category:Inorganic insecticides]]
[[Category:Arsenical herbicides]]
[[Category:Arsenical herbicides]]

Latest revision as of 19:37, 19 January 2024

Not to be confused with Copper arsenite.
Copper(II) arsenate
Names
IUPAC name
Copper(II) arsenate
Other names
Copper arsenate
Identifiers
3D model (JSmol)
ChemSpider
UNII
  • InChI=1S/2AsH3O4.3Cu/c2*2-1(3,4)5;;;/h2*(H3,2,3,4,5);;;/q;;3*+2/p-6 checkY
    Key: RKYSWCFUYJGIQA-UHFFFAOYSA-H checkY
  • InChI=1/2AsH3O4.3Cu/c2*2-1(3,4)5;;;/h2*(H3,2,3,4,5);;;/q;;3*+2/p-6
    Key: RKYSWCFUYJGIQA-CYFPFDDLAM
  • [Cu+2].[Cu+2].[Cu+2].[O-][As]([O-])(=O)[O-].[O-][As]([O-])([O-])=O
Properties
Cu3(AsO4)2
Molar mass 468.48 g/mol
Appearance blue or bluish green powder
Density 5.2 g/cm3
Melting point 1,100 °C (2,010 °F; 1,370 K)
insoluble
7.95×10−36[1]
Solubility soluble in ammonia, dilute acids
Hazards
NIOSH (US health exposure limits):
PEL (Permissible)
 TWA 1 mg/m3 (as Cu)[2]
REL (Recommended)
 TWA 1 mg/m3 (as Cu)[2]
IDLH (Immediate danger)
 TWA 100 mg/m3 (as Cu)[2]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
checkY verify (what is checkY☒N ?)

Copper arsenate (Cu3(AsO4)2·4H2O, or Cu5H2(AsO4)4·2H2O), also called copper orthoarsenate, tricopper arsenate, cupric arsenate, or tricopper orthoarsenate, is a blue or bluish-green powder insoluble in water and alcohol and soluble in aqueous ammonium and dilute acids. Its CAS number is 7778-41-8 or 10103-61-4.

Uses

[edit]

Copper arsenate is an insecticide used in agriculture. It is also used as a herbicide, fungicide, and a rodenticide. It is also used as a poison in slug baits.

Copper arsenate can also be a misnomer for copper arsenite, especially when meant as a pigment.

Natural occurrences

[edit]

Anhydrous copper arsenate, Cu3(AsO4)2, is found in nature as the mineral lammerite.[3] Copper arsenate tetrahydrate, Cu3(AsO4)2·4H2O, occurs naturally as the mineral rollandite.[4]

[edit]

Copper arsenate hydroxide or basic copper arsenate (Cu(OH)AsO4) is a basic variant with CAS number 16102-92-4. It is found naturally as the mineral olivenite. It is used as an insecticide, fungicide, and miticide. Its use is banned in Thailand since 2001.[5]

See also

[edit]

References

[edit]
  1. ^ John Rumble (June 18, 2018). CRC Handbook of Chemistry and Physics (99 ed.). CRC Press. pp. 5–188. ISBN 978-1138561632.
  2. ^ a b c NIOSH Pocket Guide to Chemical Hazards. "#0150". National Institute for Occupational Safety and Health (NIOSH).
  3. ^ Hawthorne, F. C. (1986). "Lammerite, Cu3(AsO4)2, a modulated close-packed structure" (PDF). American Mineralogist. 71: 206–209.
  4. ^ Sarp, H.; Černý, R. (2000). "Rollandite, Cu3(AsO4)2·4H2O, a new mineral". Eur. J. Mineral. 12: 1045–1050. doi:10.1127/0935-1221/2000/0012-1045.
  5. ^ "Banned pesticides (Sorted by common name)". Archived from the original on 2005-11-22. Retrieved 2006-01-14.
[edit]
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