സോഡിയം ഹൈഡ്രോക്സൈഡ്

സോഡിയം ഹൈഡ്രോക്സൈഡ്
Names
	Preferred IUPAC name Sodium hydroxide
	Systematic IUPAC name Sodium oxidanide
	Other names Caustic soda; Lye; Ascarite; White caustic; Sodium hydrate
Identifiers
CAS Number	1310-73-2 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:32145 ;
ChemSpider	14114 ;
ECHA InfoCard	100.013.805
EC Number	215-185-5;
E number	E524 (acidity regulators, ...)
Gmelin Reference	68430
KEGG	D01169 ;
MeSH	{{{value}}}
PubChem CID	14798;
RTECS number	WB4900000;
UNII	55X04QC32I ;
UN number	1824
CompTox Dashboard (EPA)	DTXSID0029634 ;
InChI
SMILES
Properties
Chemical formula	NaOH
Molar mass	39.9971 g mol−1
Appearance	White, waxy, opaque crystals
Odor	odorless
സാന്ദ്രത	2.13 g/cm3
ദ്രവണാങ്കം
ക്വഥനാങ്കം	1,388 °C (2,530 °F; 1,661 K)
Solubility in water	418 g/L (0 °C) ; 1110 g/L (20 °C) ; 3370 g/L (100 °C)
Solubility	soluble in glycerol ; negligible in ammonia ; insoluble in ether ; slowly soluble in propylene glycol
Solubility in methanol	238 g/L
Solubility in ethanol	<<139 g/L
ബാഷ്പമർദ്ദം	<2.4 kPa (at 20 °C)
Basicity (pKb)	-0.56 (NaOH(aq) = Na+ + OH–)
Magnetic susceptibility (χ)	−16.0·10−6 cm3/mol
Refractive index (nD)	1.3576
Thermochemistry
Heat capacity (C)	59.66 J/mol K
Std molar; entropy (S⦵298)	64 J·mol−1·K−1
Std enthalpy of; formation (ΔfH⦵298)	−427 kJ·mol−1
Gibbs free energy (ΔfG⦵)	-380.7 kJ/mol
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H290, H314
Precautionary statements	P280, P305+P351+P338, P310
NFPA 704 (fire diamond)	3 0 1 ALK
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	40 mg/kg (mouse, intraperitoneal)
LDLo (lowest published)	500 mg/kg (rabbit, oral)
	NIOSH (US health exposure limits):
PEL (Permissible)	TWA 2 mg/m3
REL (Recommended)	C 2 mg/m3
IDLH (Immediate danger)	10 mg/m3
Safety data sheet (SDS)	External MSDS
Related compounds
Other anions	Sodium hydrosulfide
Other cations	Caesium hydroxide; Lithium hydroxide; Potassium hydroxide; Rubidium hydroxide
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). \| colspan=2 \| verify (what is: /?) Infobox references