Sodium nitroprusside

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Sodium nitroprusside
Sodium nitroprusside bottle and sample.jpg
Sodium nitroprusside sample
Names
IUPAC name
Sodium nitroprusside
Other names
Nipride
Nitropress
Sodium nitroferricyanide
Sodium pentacyanonitrosylferrate
Properties
C5FeN6Na2O
Na2[Fe(CN)5NO]
Molar mass 261.918 g/mol
Odor Odorless
Density 1.72 g/cm3
Melting point 450 °C (842 °F; 723 K) (decomposes)
Boiling point Decomposes
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):
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