Choline hydroxide

Choline hydroxide
Names
	IUPAC name Choline hydroxide
	Systematic IUPAC name 2-Hydroxy-N,N,N-trimethylethanaminium hydroxide
	Other names Choline base; Ethanaminium, 2-hydroxy-N,N,N-trimethyl-, hydroxide (1:1); Gossypine; (2-Hydroxyethyl)trimethylammonium hydroxide; 2-Hydroxyethyl(trimethyl)azanium hydroxide; Sincaline;
Identifiers
CAS Number	123-41-1 ;
3D model (JSmol)	Interactive image;
Abbreviations	ChOH
ChEMBL	ChEMBL3187547;
ChemSpider	28995;
ECHA InfoCard	100.004.206
EC Number	204-625-1 ;
PubChem CID	31255;
UNII	7THJ3EG9SY ;
CompTox Dashboard (EPA)	DTXSID9047467 ;
	InChI InChI=1S/C5H14NO.H2O/c1-6(2,3)4-5-7;/h7H,4-5H2,1-3H3;1H2/q+1;/p-1 Key: KIZQNNOULOCVDM-UHFFFAOYSA-M;
	SMILES C[N+](C)(C)CCO.[OH-];
Properties
Chemical formula	[(CH3)3NCH2CH2OH]+OH−
Molar mass	121.180 g·mol−1
Appearance	Viscous colorless deliquescent liquid or white granular powder
Odor	Unpleasant, like trimethylamine
Density	1.073 g/cm3 at 25 °C (46% water solution by weight)
Solubility in water	Very soluble
Solubility	48-50% solution of choline hydroxide in water (by weight) is insoluble in toluene. Choline hydroxide is soluble in ethanol, insoluble in diethyl ether and chloroform.
Refractive index (nD)	1.4304 (46% water solution by weight)
Structure
Coordination geometry	Tetrahedral at the nitrogen atom
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Corrosive
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H314, H335, H372
Precautionary statements	P260, P261, P264, P270, P271, P280, P301+P330+P331, P302, P304+P340, P305, P316, P317, P319, P321, P338, P361, P363, P403+P233, P405, P501
NFPA 704 (fire diamond)	3 0 0
Flash point	92 °F (33 °C)
Autoignition; temperature	380 °C (716 °F)
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	21.4 mg/kg (mouse, intravenous)
Related compounds
Other anions	Choline chloride
Other cations	Tetraethylammonium hydroxide
Related compounds	Choline
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Choline hydroxide is an organic compound with the chemical formula [(CH₃)₃NCH₂CH₂OH]⁺OH⁻. It is also known as choline base. It is used as solutions in water or alcohols, which are colorless and very alkaline.

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