Basic Information

• Chinese Name: 硝普钠二水合物

• English Name: Sodium Nitroprusside Dihydrate

• CAS Number: 13755-38-9

• Molecular Formula: C5H4FeN6Na2O3

• Molecular Weight: 297.95 (or 297.9482, depending on sources)

• EINECS Number: 604-025-3

Physical Properties

• Density: 1.72

• Solubility: Soluble in water, slightly soluble in alcohol. Its aqueous solution is unstable and can gradually decompose to turn green

• pH Value: 5 (50g/l, H2O, 20°C)

Chemical Properties

• Stability: Stable under normal temperature and pressure, but should avoid contact with oxides, acids, etc.

• Sensitivity: Hygroscopic

Uses

1. Scientific Research: Used exclusively for scientific research experiments; strictly prohibited for other non-research purposes.

2. Medical Use: Sodium Nitroprusside is a potent and rapid-acting vasodilator that directly dilates both arterial and venous smooth muscles, reducing peripheral vascular resistance and producing a hypotensive effect. It also reduces preload and afterload on the heart, improves cardiac output, and alleviates symptoms of heart failure by reducing blood regurgitation in valve insufficiency.

3. Chemical Analysis: Used as a reagent for the detection of aldehydes, acetone, sulfur dioxide, zinc, alkali metals, sulfides, etc. It is also used in chromatography and urine testing.

Safety Information

• Hazard Symbol: GHS06

• Risk Phrase: DANGER

• Hazard Class: 6.1

• UN Number: UN 3288 6

• R-phrases: R25

• S-phrases: 45-36/37/39-22

• Packing Group: III

• Precautionary Statements: P301 + P310 (If swallowed, call a poison center/doctor immediately)

Storage and Preparation

• Storage Conditions: Store at room temperature, protected from light and moisture, avoiding contact with oxides, acids, etc.

• Preparation of Stock Solution: Weigh a small amount of powder and dissolve it thoroughly in ultrapure water to prepare a stock solution of a certain concentration. Aliquot and store at low temperature, protected from light.