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Sodium acetate
	Skeletal formula of sodium acetate
	Sodium acetate
Names
	Preferred IUPAC name Sodium acetate
	Systematic IUPAC name Sodium ethanoate
	Other names Hot ice (sodium acetate trihydrate)
Identifiers
CAS Number	anhydrous: 127-09-3 ; trihydrate: 6131-90-4 ;
3D model (JSmol)	anhydrous: Interactive image;
Beilstein Reference	3595639
ChEBI	anhydrous: CHEBI:32954 ; trihydrate: CHEBI:32138;
ChEMBL	anhydrous: ChEMBL1354 ;
ChemSpider	anhydrous: 29105 ;
DrugBank	anhydrous: DB09395;
EC Number	anhydrous: 204-823-8;
Gmelin Reference	20502
KEGG	trihydrate: D01779;
PubChem CID	anhydrous: 517045; trihydrate: 23665404;
RTECS number	anhydrous: AJ4300010 (anhydrous); AJ4580000;
UNII	anhydrous: NVG71ZZ7P0 ; trihydrate: 4550K0SC9B ;
	InChI InChI=1S/C2H4O2.Na/c1-2(3)4;/h1H3,(H,3,4);/q;+1/p-1 Key: VMHLLURERBWHNL-UHFFFAOYSA-M ; anhydrous: InChI=1/C2H4O2.Na/c1-2(3)4;/h1H3,(H,3,4);/q;+1/p-1 Key: VMHLLURERBWHNL-REWHXWOFAT;
	SMILES anhydrous: [Na+].[O-]C(=O)C;
Properties
Chemical formula	C2H3NaO2
Molar mass	82.034 g·mol−1
Appearance	White deliquescent powder or crystals
Odor	Vinegar (acetic acid) odor when heated to decomposition
Density	1.528 g/cm3 (20 °C, anhydrous); 1.45 g/cm3 (20 °C, trihydrate)
Melting point	324 °C (615 °F; 597 K) ; (anhydrous); 58 °C (136 °F; 331 K); (trihydrate)
Boiling point	881.4 °C (1,618.5 °F; 1,154.5 K) ; (anhydrous); 122 °C (252 °F; 395 K); (trihydrate) decomposes
Solubility in water	Anhydrous:; 119 g/100 mL (0 °C); 123.3 g/100 mL (20 °C); 125.5 g/100 mL (30 °C); 137.2 g/100 mL (60 °C); 162.9 g/100 mL (100 °C); Trihydrate:; 32.9 g/100 mL (-10 °C); 36.2 g/100 mL (0 °C); 46.4 g/100 mL (20 °C); 82 g/100 mL (50 °C)
Solubility	Soluble in alcohol, hydrazine, SO2
Solubility in methanol	16 g/100 g (15 °C); 16.55 g/100 g (67.7 °C)
Solubility in ethanol	Trihydrate:; 5.3 g/100 mL
Solubility in acetone	0.5 g/kg (15 °C)
Acidity (pKa)	24 (20 °C); 4.75 (when mixed with CH3COOH as a buffer)
Basicity (pKb)	9.25
Magnetic susceptibility (χ)	−37.6·10−6 cm3/mol
Refractive index (nD)	1.464
Structure
Crystal structure	Monoclinic
Thermochemistry
Heat capacity (C)	100.83 J/(mol·K) (anhydrous); 229 J/(mol·K) (trihydrate)
Std molar; entropy (S⦵298)	138.1 J/(mol·K) (anhydrous); 262 J/(mol·K) (trihydrate)
Std enthalpy of; formation (ΔfH⦵298)	−709.32 kJ/mol (anhydrous); −1604 kJ/mol (trihydrate)
Gibbs free energy (ΔfG⦵)	−607.7 kJ/mol (anhydrous)
Pharmacology
ATC code	B05XA08 (WHO)
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Irritant
NFPA 704 (fire diamond)	0 1 1
Flash point	>250 °C (482 °F; 523 K)
Autoignition; temperature	607 °C (1,125 °F; 880 K)
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	3530 mg/kg (oral, rat); >10000 mg/kg (rabbit, dermal)
LC50 (median concentration)	>30 g/m3 (rat, 1 h)
Safety data sheet (SDS)	Fisher Scientific
Related compounds
Other anions	Sodium formate; Sodium propionate
Other cations	Potassium acetate; Calcium acetate
Related compounds	Sodium diacetate
	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

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References

^ "Sodium Acetate". International Chemical Safety Cards. National Institute of Occupational Safety and Health. 2018-09-18.
^ ^a ^b ^c "sodium acetate trihydrate". chemister.ru.
^ Seidell, Atherton; Linke, William F. (1952). Solubilities of Inorganic and Organic Compounds. Van Nostrand.
^ ^a ^b ^c ^d ^e ^f "sodium acetate". chemister.ru.
^ ^a ^b ^c Sigma-Aldrich Co., Sodium acetate. Retrieved on 2014-06-07.
^ ^a ^b Acetic acid, sodium salt in Linstrom, Peter J.; Mallard, William G. (eds.); NIST Chemistry WebBook, NIST Standard Reference Database Number 69, National Institute of Standards and Technology, Gaithersburg (MD) (retrieved 2014-05-25).
^ Acetic acid, sodium salt, hydrate (1:1:3) in Linstrom, Peter J.; Mallard, William G. (eds.); NIST Chemistry WebBook, NIST Standard Reference Database Number 69, National Institute of Standards and Technology, Gaithersburg (MD) (retrieved 2014-05-25).
^ HI | English meaning - Cambridge Dictionary

[1] "Sodium Acetate". International Chemical Safety Cards. National Institute of Occupational Safety and Health. 2018-09-18.

[chemister2-2] "sodium acetate trihydrate". chemister.ru.

[sioc-3] Seidell, Atherton; Linke, William F. (1952). Solubilities of Inorganic and Organic Compounds. Van Nostrand.

[chemister-4] ^ ^a ^b ^c ^d ^e ^f "sodium acetate". chemister.ru.

[sigma-5] Sigma-Aldrich Co., Sodium acetate. Retrieved on 2014-06-07.

[nist-6] Acetic acid, sodium salt in Linstrom, Peter J.; Mallard, William G. (eds.); NIST Chemistry WebBook, NIST Standard Reference Database Number 69, National Institute of Standards and Technology, Gaithersburg (MD) (retrieved 2014-05-25).

[nist2-7] Acetic acid, sodium salt, hydrate (1:1:3) in Linstrom, Peter J.; Mallard, William G. (eds.); NIST Chemistry WebBook, NIST Standard Reference Database Number 69, National Institute of Standards and Technology, Gaithersburg (MD) (retrieved 2014-05-25).

[8] HI | English meaning - Cambridge Dictionary

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