Thallium(I) hydroxide

Thallium(I) hydroxide
Names
	IUPAC name thallium(I) hydroxide
	Other names thallous hydroxide
Identifiers
CAS Number	12026-06-1 ;
3D model (JSmol)	Interactive image;
ChemSpider	141413 ;
ECHA InfoCard	100.031.540
EC Number	234-708-8;
PubChem CID	160963;
UNII	847N2ZKW5S ;
CompTox Dashboard (EPA)	DTXSID10894114 ;
	InChI InChI=1S/H2O.Tl/h1H2;/q;+1/p-1 Key: QGYXCSSUHCHXHB-UHFFFAOYSA-M ; InChI=1/H2O.Tl/h1H2;/q;+1/p-1 Key: QGYXCSSUHCHXHB-REWHXWOFAR;
	SMILES [Tl+].[OH-];
Properties
Chemical formula	TlOH
Molar mass	221.39 g·mol−1
Appearance	yellow needles
Density	7.44 g/cm3
Melting point	decomposes at 139°C
Solubility in water	34.3 g/(100 g) at 18°C
Thermochemistry
Std molar; entropy (S⦵298)	88.0 J/(mol·K)
Std enthalpy of; formation (ΔfH⦵298)	−238.9 kJ/mol
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Very toxic Corrosive Dangerous for the environment
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H300, H330, H373, H411
Precautionary statements	P260, P264, P270, P271, P273, P284, P301+P310, P304+P340, P310, P314, P320, P330, P391, P403+P233, P405, P501
NFPA 704 (fire diamond)	4 0 1 COR
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Thallium(I) hydroxide, also called thallous hydroxide, is a chemical compound with the chemical formula Tl O H. It is a hydroxide of thallium, with thallium in oxidation state +1. It is a thallium(I) salt of water. It consists of thallium(I) cations Tl⁺ and hydroxide anions OH⁻.