Нитрат празеодима

Description

Praseodymium nitrate (Praseodymium nitrate) is a salt of trivalent praseodymium and nitric acid, Pr(NO₃)₃. Strong oxidizing agent, highly soluble in water. The product item serves as a working form for introducing praseodymium into a solution: praseodymium oxide is obtained from it by calcination, the active component is applied to a carrier by impregnation in the manufacture of catalysts, the element is introduced into glass charge and ceramic glazes, phosphors and doped optical media are synthesized, and standard solutions are prepared for the analysis of rare earth elements. Synonymous series: nitric acid, praseodymium salt (3+); praseodymium nitrate (Pr(NO₃)₃); praseodymium trinitrate; praseodymium(III) nitrate; praseodymium nitrate (3+); praseodymium trinitrate (3+).

Basic Attributes

• CAS No: 10361-80-5
• Chemical formula on the card: HNO3 1/3 Pr
• Molecular Weight: 435.01
• Exact weight: 344.882
• EU number: 233-796-5
• PSA Specs: 189
• XLogP3: 0.788

Physico-chemical characteristics

• Boiling point: 83 °C at 760 mm Hg. Art.

The indicated 83 °C refers to the behavior of the hydrated form of the salt: when heated, the water of crystallization begins to split off, rather than the boiling of the anhydrous nitrate. The molecular weight of 435.01 on the card corresponds to the hexahydrate, while the exact weight of 344.882 corresponds to the anhydrous salt—the discrepancy reflects that the item is supplied hydrated.

Toxicity

• LD50 oral, rat: 1859 mg/kg
• LD50 intraperitoneal, mice: 218 mg/kg

Fire and explosion hazard

• Combustion produces toxic nitrogen oxide fumes
• Mixture with reducing agent, sulfur, phosphorus and similar substances may be explosive if heated, impacted or rubbed.

This is the standard behavior of inorganic nitrates: praseodymium nitrate itself does not burn, but acts as a source of oxygen and sharply enhances the combustion of any fuel that happens to be nearby.

Hazard classification

• Hazard Statements: H272 - may increase fire, oxidizer
• Precautions: P210, P220, P221, P261, P264, P270, P271, P273, P280, P301+P312, P302+P352, P304+P340, P305+P351+P338, P310, P312, P321, P330, P332+P313, P337+P313, P362, P370+P378, P391, P403+P233, P405, P501
• Hazard class codes according to the previous system: 8, 36/37/38, 22
• Safety instructions: 17, 26, 27, 36/37/39
• Labels: O (oxidizing agent), Xi (irritant), Xn (harmful)
• Water hazard class WGK Germany: 2
• RTECS number: TU1400000

Transportation

• UN number: 1465
• Hazard category: 5.1 (oxidizing substances), item 5.1/page. 3
• Packing group: II

Storage

The warehouse is ventilated, low temperature, dry; Convenient loading and unloading is provided. Separate storage with organic substances, reducing agents, as well as sulfur and phosphorus-containing flammable materials is mandatory. The container is tightly closed and protected from mechanical damage; shocks and friction during movement are eliminated.

Protective equipment and first aid

Gloves, safety glasses, protective clothing; when working with powder - respiratory protection, inhalation of dust is not allowed (P261, P271). Ingestion: Rinse mouth and seek medical advice (P301+P312, P330). Skin contact: Wash off with plenty of soap and water (P302+P352). Eye contact: Rinse carefully with water for several minutes, remove contact lenses (P305+P351+P338). In case of fire, extinguishing is carried out according to P370+P378, limiting the spread of wastewater (P391) and preventing it from entering water bodies.