Difference between revisions of "Sodium nitroprusside"

Latest revision as of 19:26, 31 December 2020

Sodium nitroprusside

Sodium nitroprusside sample
Names
IUPAC name Sodium nitroprusside
Other names Nipride Nitropress Sodium nitroferricyanide Sodium pentacyanonitrosylferrate
Properties
Chemical formula	C5FeN6Na2O Na2[Fe(CN)5NO]
Molar mass	261.918 g/mol
Appearance	Dark reddish-orange solid
Odor	Odorless
Density	1.72 g/cm3
Melting point	450 °C (842 °F; 723 K) (decomposes)
Boiling point	Decomposes
Solubility in water	10 g/100 ml (20 °C)
Solubility	Slightly soluble in DMF, HMPA Insoluble in H2S, hydrocarbons
Vapor pressure	~0 mmHg
Hazards
Safety data sheet	LabChem
Flash point	Non-flammable
Lethal dose or concentration (LD, LC):
LD50 (Median dose)	43 mg/kg (mouse, oral) 300 mg/kg (rat, oral)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Sodium nitroprusside or SNP is a chemical compound, often encountered as dihydrate. It is sold under the brand name Nitropress among others as a medication used to lower blood pressure.

Properties

Chemical

Sodium nitropruside decomposes to sodium ferrous ferrocyanide, sodium ferrocyanide, nitric oxide, and cyanogen at temperatures around 450 °C.

It decomposes in aqueous acid to liberate hydrogen cyanide (HCN).

Physical

Sodium nitropruside is a dark red solid, soluble in water.

Availability

It is sold by lab suppliers.

Preparation

Sodium nitroprusside can be synthesized by digesting a solution of potassium ferrocyanide in water with nitric acid, followed by neutralization with sodium carbonate.

Projects

• Detection of methyl ketones, amines, and thiols

Handling

Safety

Sodium nitroprusside has low toxicity.

Storage

Sodium nitroprusside should be kept in plastic bottles.

Disposal

Can be neutralized with bleach.

References

Relevant Sciencemadness threads

• Sodium Nitroprusside Synthesis