Praseodymium standard , 1000μg/mlin1.0mol/LHNO3 , 7440-10-0

Synonym(s):
;Praseodymium

CAS NO.：7440-10-0

Empirical Formula: Pr

Molecular Weight: 140.91

MDL number: MFCD00011174

EINECS: 231-120-3

PRODUCT Properties

• Melting point: 931 °C (lit.)
• Boiling point: 3520 °C (lit.)
• Density: 6.71 g/mL at 25 °C (lit.)
• storage temp.: Flammables area
• form: powder
• color: White
• Specific Gravity: 6.782
• PH: <1 (20°C in H2O)
• Resistivity: 68 μΩ-cm, 20°C
• Water Solubility: Reacts with water.
• Sensitive: Air & Moisture Sensitive
• Merck: 13,7797
• Exposure limits: ACGIH: TWA 2 ppm; STEL 4 ppm; OSHA: TWA 2 ppm(5 mg/m3); NIOSH: IDLH 25 ppm; TWA 2 ppm(5 mg/m3); STEL 4 ppm(10 mg/m3)
• Bulk Modulus: 28.8 GPa
• Hardness, Vickers: 20
• Poissons Ratio: 0.281
• Shear Modulus: 14.8 GPa
• CAS DataBase Reference: 7440-10-0(CAS DataBase Reference)
• EPA Substance Registry System: Praseodymium (7440-10-0)

Description and Uses

Praseodymium optical properties for use in amplification of telecommunication systems, including as a doping agent in fluoride fibers. It is also used in the scintillator for medical CAT scans. Used as additive for special steel, non-ferric alloy, hydrogen storage alloy, also reducer for making other rare Earth metal.

Safety

• Symbol(GHS): GHS02,GHS07
• Signal word: Danger
• Hazard statements: H250-H315-H319-H413
• Precautionary statements: P210-P231+P232-P273-P302+P352-P305+P351+P338-P370+P378
• Hazard Codes: F,C
• Risk Statements: 17-11-34
• Safety Statements: 17-7/9-33-16-45-36/37/39-27-26-23
• RIDADR: UN 3208 4.3/PG 1
• WGK Germany: 3
• F: 1-10
• TSCA: Yes
• HazardClass: 8
• PackingGroup: III
• HS Code: 28053090