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THULIUM Structure

THULIUM

Chemical Properties

Melting point 1545 °C (lit.)
Boiling point 1950 °C (lit.)
Density  9.332 g/mL at 25 °C (lit.)
solubility  soluble in dilute acid solutions
form  powder
color  Silver-gray
Specific Gravity 9.332
Resistivity 90 μΩ-cm, 20°C
Water Solubility  slowly reacts with H2O; soluble in dilute acids [HAW93]
Sensitive  Air & Moisture Sensitive
Merck  13,9471
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 7440-30-4(CAS DataBase Reference)
EWG's Food Scores 1
FDA UNII 8RKC5ATI4P
EPA Substance Registry System Thulium (7440-30-4)

Safety

Symbol(GHS)
Signal wordDanger
Hazard statements H228-H319-H335-H260
Precautionary statements P210-P261-P305+P351+P338-P223-P231+P232-P240-P280-P501a
Hazard Codes  F,Xi,C
Risk Statements  15-17-36/37-34-23/24/25
Safety Statements  26-36-43-45-36/37/39-27
RIDADR  UN 3089 4.1/PG 2
WGK Germany  3
10
TSCA  Yes
HazardClass  4.1
PackingGroup  II
HS Code  28053090
NFPA 704:
2
0 0

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THULIUM Chemical Properties,Usage,Production

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