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YTTERBIUM Structure

YTTERBIUM

Chemical Properties

Melting point 824 °C(lit.)
Boiling point 1196 °C(lit.)
Density  6.54 g/mL at 25 °C(lit.)
storage temp.  Flammables area
solubility  soluble in dilute acid solutions
form  powder
color  Silver-gray
Specific Gravity 6.97
Resistivity 28 μΩ-cm, 20°C
Water Solubility  It reacts slowly with water and is soluble in dilute acids.
Sensitive  Air & Moisture Sensitive
Merck  13,10160
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)
CAS DataBase Reference 7440-64-4(CAS DataBase Reference)
EWG's Food Scores 1
FDA UNII MNQ4O4WSI1
EPA Substance Registry System Ytterbium (7440-64-4)

Safety

Symbol(GHS)
Signal wordDanger
Hazard statements H228-H302+H312+H332-H315-H319-H335
Precautionary statements P210-P280-P301+P312-P302+P352+P312-P304+P340+P312-P305+P351+P338
Hazard Codes  Xn,F,Xi
Risk Statements  36/37/38-20/21/22-11-36/38
Safety Statements  36-33-16-26
RIDADR  UN 3089 4.1/PG 2
WGK Germany  3
RTECS  ZG1925000
TSCA  Yes
HazardClass  4.2
PackingGroup  I
HS Code  28053090
NFPA 704:
1
2 1

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