Sodium cyanide

Sodium cyanide
Identifiers
CAS Number	143-33-9 ;
3D model (JSmol)	Interactive image;
ChEMBL	ChEMBL1644697 ;
ChemSpider	8587 ;
ECHA InfoCard	100.005.091
EC Number	205-599-4;
PubChem CID	8929;
RTECS number	VZ7525000;
UNII	O5DDB9Z95G ;
UN number	1689
CompTox Dashboard (EPA)	DTXSID4024309 ;
	InChI InChI=1S/CN.Na/c1-2;/q-1;+1 Key: MNWBNISUBARLIT-UHFFFAOYSA-N ; InChI=1S/CN.Na/c1-2;/q-1;+1 Key: MNWBNISUBARLIT-UHFFFAOYAG;
	SMILES [C-]#N.[Na+];
Properties
Chemical formula	NaCN
Molar mass	49.0072 g/mol
Appearance	white solid
Odor	faint almond-like
Density	1.5955 g/cm3
Melting point	563.7 °C (1,046.7 °F; 836.9 K)
Boiling point	1,496 °C (2,725 °F; 1,769 K)
Solubility in water	48.15 g/100 mL (10 °C) ; 63.7 g/100 mL (25 °C)
Solubility	soluble in ammonia, methanol, ethanol ; very slightly soluble in dimethylformamide, SO2 ; insoluble in dimethyl sulfoxide
Refractive index (nD)	1.452
Thermochemistry
Heat capacity (C)	70.4 J·mol−1·K−1
Std molar; entropy (S⦵298)	115.6 J·mol−1·K−1
Std enthalpy of; formation (ΔfH⦵298)	−87.5 kJ·mol−1
Gibbs free energy (ΔfG⦵)	−76.4 kJ·mol−1
Enthalpy of fusion (ΔfH⦵fus)	8.79 kJ·mol−1
Hazards
	GHS labelling:
Pictograms
NFPA 704 (fire diamond)	4 0 0
Flash point	Non-flammable
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	6.44 mg/kg (rat, oral); 4 mg/kg (sheep, oral); 15 mg/kg (mammal, oral); 8 mg/kg (rat, oral)
	NIOSH (US health exposure limits):
PEL (Permissible)	TWA 5 mg/m3
REL (Recommended)	C 5 mg/m3 (4.7 ppm) [10-minute]
IDLH (Immediate danger)	25 mg/m3 (as CN)
Safety data sheet (SDS)	ICSC 1118
Related compounds
Other cations	Potassium cyanide
Related compounds	Hydrogen cyanide
	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

Sodium cyanide is a poisonous compound with the formula Na C N. It is a white, water-soluble solid. Cyanide has a high affinity for metals, which leads to the high toxicity of this salt. Its main application, in gold mining, also exploits its high reactivity toward metals. It is a moderately strong base.

^ CRC handbook of chemistry and physics : a ready-reference book of chemical and physical data. William M. Haynes, David R. Lide, Thomas J. Bruno (2016-2017, 97th ed.). Boca Raton, Florida. 2016. ISBN 978-1-4987-5428-6. OCLC 930681942.{{cite book}}: CS1 maint: location missing publisher (link) CS1 maint: others (link)
^ ^a ^b ^c NIOSH Pocket Guide to Chemical Hazards. "#0562". National Institute for Occupational Safety and Health (NIOSH).
^ "Cyanides (as CN)". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).

[1] CRC handbook of chemistry and physics : a ready-reference book of chemical and physical data. William M. Haynes, David R. Lide, Thomas J. Bruno (2016-2017, 97th ed.). Boca Raton, Florida. 2016. ISBN 978-1-4987-5428-6. OCLC 930681942.{{cite book}}: CS1 maint: location missing publisher (link) CS1 maint: others (link)

[PGCH-2] NIOSH Pocket Guide to Chemical Hazards. "#0562". National Institute for Occupational Safety and Health (NIOSH).

[3] "Cyanides (as CN)". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).

[1]

[3]

[2]

Identifiers


CAS Number	143-33-9^Y
3D model (JSmol)	Interactive image
ChEMBL	ChEMBL1644697^Y
ChemSpider	8587^Y
ECHA InfoCard	100.005.091
EC Number	205-599-4
PubChem CID	8929
RTECS number	VZ7525000
UNII	O5DDB9Z95G^Y
UN number	1689
CompTox Dashboard (EPA)	DTXSID4024309
InChI InChI=1S/CN.Na/c1-2;/q-1;+1^Y Key: MNWBNISUBARLIT-UHFFFAOYSA-N^Y InChI=1S/CN.Na/c1-2;/q-1;+1 Key: MNWBNISUBARLIT-UHFFFAOYAG
SMILES [C-]#N.[Na+]
Properties
Chemical formula	NaCN
Molar mass	49.0072 g/mol
Appearance	white solid
Odor	faint almond-like
Density	1.5955 g/cm³
Melting point	563.7 °C (1,046.7 °F; 836.9 K)
Boiling point	1,496 °C (2,725 °F; 1,769 K)
Solubility in water	48.15 g/100 mL (10 °C) 63.7 g/100 mL (25 °C)
Solubility	soluble in ammonia, methanol, ethanol very slightly soluble in dimethylformamide, SO₂ insoluble in dimethyl sulfoxide
Refractive index (n_D)	1.452
Thermochemistry^[1]
Heat capacity (C)	70.4 J·mol⁻¹·K⁻¹
Std molar entropy (S^⦵₂₉₈)	115.6 J·mol⁻¹·K⁻¹
Std enthalpy of formation (Δ_fH^⦵₂₉₈)	−87.5 kJ·mol⁻¹
Gibbs free energy (Δ_fG^⦵)	−76.4 kJ·mol⁻¹
Enthalpy of fusion (Δ_fH^⦵_fus)	8.79 kJ·mol⁻¹
Hazards
GHS labelling:
Pictograms
NFPA 704 (fire diamond)	4 0 0
Flash point	Non-flammable
Lethal dose or concentration (LD, LC):
LD₅₀ (median dose)	6.44 mg/kg (rat, oral) 4 mg/kg (sheep, oral) 15 mg/kg (mammal, oral) 8 mg/kg (rat, oral)^[3]
NIOSH (US health exposure limits):
PEL (Permissible)	TWA 5 mg/m³^[2]
REL (Recommended)	C 5 mg/m³ (4.7 ppm) [10-minute]^[2]
IDLH (Immediate danger)	25 mg/m³ (as CN)^[2]
Safety data sheet (SDS)	ICSC 1118
Related compounds
Other cations	Potassium cyanide
Related compounds	Hydrogen cyanide
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