Thallium(I) hydroxide

Thallium(I) hydroxide, also called thallous hydroxide, TlOH, is a hydroxide of thallium, with thallium in oxidation state +1. Thallous hydroxide is a strong base; it is changed to thallous ion, Tl+, except in strongly basic conditions. Tl+ resembles an alkali metal ion, A+, such as Li+ or K+.

Thallium(I) hydroxide[1]
Names
IUPAC name
thallium(I) hydroxide
Other names
thallous hydroxide
Identifiers
CAS Number
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.031.540
PubChem CID
UNII
CompTox Dashboard (EPA)
Properties
Chemical formula
TlOH
Molar mass 221.390 g/mol
Appearance yellow needles
Density 7.44 g/cm3
Melting point decomposes at 139°C
Solubility in water
34.3 g/100g at 18°C
Hazards
Main hazards Very toxic (T+)

Corrosive (C) Dangerous for the environment (N)

EU classification (DSD) (outdated)
T+ C N
NFPA 704 (fire diamond)
0
4
1
COR
Thermochemistry
Std molar
entropy (So298)
88.0 J·mol−1·K−1
Std enthalpy of
formation fH298)
-238.9 kJ·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is YN ?)
Infobox references

References

  1. Lide, David R. (1998). Handbook of Chemistry and Physics (87 ed.). Boca Raton, Florida: CRC Press. pp. 4–89, 5–16. ISBN 0-8493-0594-2.
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