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A5277612

Lanthanum standard , 1000μg/mlin10%HCl , 7439-91-0

Synonym(s):
;Lanthanum

CAS NO.:7439-91-0

Empirical Formula: La

Molecular Weight: 138.91

MDL number: MFCD00011066

EINECS: 231-099-0

Update time: 2022-07-08

PRODUCT Properties

Melting point: 920 °C (lit.)
Boiling point: 3464 °C (lit.)
Density  6.19 g/mL at 25 °C (lit.)
solubility  soluble in dilute acid solutions
Specific Gravity 6.19
color  Silver-white
Resistivity 54 μΩ-cm
Water Solubility  slowly decomposes in H2O; readily attacked by mineral acids [MER06]
Sensitive  Air & Moisture Sensitive
Merck  13,5379
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)
Stability: Stable.

Description and Uses

Lanthanum is the first element in the rare earth or Lanthanide series. It is the model for all the other trivalent rare earths. After Cerium, it is the second most abundant of the rare earths.
Lanthanum-rich Lanthanide compounds have been used extensively for cracking reactions in FCC catalysts, especially to manufacture high-octane gasoline from heavy crude oil.
Lanthanum-Rich Rare Earth metals play the important roles in hydrogen storage batteries.
It is utilized in green phosphors based on the phosphate (La0.4Ce0.45Tb0.15)PO4;in laser crystals based on the Yttrium-Lanthanum-Fluoride (YLF) composition.
Lanthanum Metal is the very important raw materials in producing Hydrogen Storage Alloys for NiMH batteries, and is also used to produce other pure Rare Earth metals and specialty alloys. Small amounts of Lanthanum added to Steel improves its malleability, resistance to impact, and ductility; Small amounts of Lanthanum are present in many pool products to remove the Phosphates that feed algae. Lanthanum Metal can be further processed to various shapes of ingots, pieces, wires, foils, slabs, rods, discs and powder.

Safety

Symbol(GHS) 
GHS02
Signal word  Danger
Hazard statements  H228
Precautionary statements  P210-P240-P241-P280-P370+P378
Hazard Codes  F,T
Risk Statements  11-34-23/24/25-14/15
Safety Statements  26-27-36/37/39-45-33-16-23-43-Neverusewater.
RIDADR  UN 3264 8/PG 3
WGK Germany  3
TSCA  Yes
HazardClass  4.1
PackingGroup  III
HS Code  28053014

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