Thulium | CAS No. 7440-30-4

Thulium

Basic Information

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CAS Number

7440-30-4

Molecular Formula

Molecular Weight

168.93 g/mol

Chemical Classification

Basic Chemical Raw Materials Inorganic Chemicals Acids

Basic Physical Properties

Melting Point

1545 °C

Boiling Point

1950 °C

Density

9.332 g/mL at 25 °C

SMILES

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[Tm]

InChI

InChI=1S/Tm

InChIKey

FRNOGLGSGLTDKL-UHFFFAOYSA-N

LogP

0.0

Topological Polar Surface Area

0.0 Å²

Hydrogen Bond Donor/Acceptor

0 / 0

Complexity

Safety Information

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GHS Hazard Pictograms

H228

H319

H335

Hazard Statement

H228 Flammable solid
Flammable solids

H319 Causes serious eye irritation
Serious eye damage/eye irritation

H335 May cause respiratory irritation
Specific target organ toxicity, single exposure; Respiratory tract irritation

Hazard Class

Class 4.1 Class 4.1

Sensitiveness

Air & Moisture Sensitive

Synonyms & References

English

Thulium, powder, ~40 mesh, 99.9% trace metals basis
Thulium, foil, 50x50mm, thickness 0.15mm, as rolled, 99%
MFCD00011281
Thulium, ingot, 99.9%
Thulium, chips, 99.9% trace metals basis
7440-30-4
NS00082609
Q1853
Thulium, rod, 27mm, diameter 6mm, cast, 99%
Thulium foil
Tm
Thulium Standard: Tm @ 10000 microg/mL in 5% HNO3
Thulium, foil, not light tested, 25x25mm, thickness 0.025mm, as rolled, 99%
Thulium foil, 0.25mm (0.01in) thick
Thulium, foil, 50x50mm, thickness 0.1mm, as rolled, 99%
Thulium, foil, 25x25mm, thickness 0.15mm, as rolled, 99%
CHEBI:33380
UNII-8RKC5ATI4P
Thulium, foil, not light tested, 25x25mm, thickness 0.002mm, as rolled, 99%
8RKC5ATI4P
Thulium
tulio
Thulium Standard: Tm @ 1000 microg/mL in 5% HNO3
Thulium powder
Thulium trihydride
Thulium, foil, not light tested, 12.5x12.5mm, thickness 0.005mm, as rolled, 99%
AKOS024257646
69Tm
EINECS 231-140-2
Thulium - Tm @ 1000 microg/mL in 5% HNO3
Thulium, foil, 25x25mm, thickness 0.1mm, as rolled, 99%

MDL Number

MFCD00011281

FAQ

What is Thulium (CAS: 7440-30-4)?

Thulium is a rare earth element with the atomic number 69. It has the chemical symbol Tm and the CAS number 7440-30-4. This element is silvery-white and has a metallic luster. Thulium is relatively rare and is used in various applications including nuclear reactors, lasers, and as a component in some phosphors.

What are the main uses of Thulium (CAS: 7440-30-4)?

Thulium is primarily used in nuclear reactors, particularly in the control rods for its neutron-absorbing properties. It is also used in medical applications for brachytherapy to treat cancer. Additionally, thulium is used in lasers, especially in solid-state lasers, and in the production of phosphors for certain types of fluorescent lamps.

Is Thulium (CAS: 7440-30-4) safe?

Thulium is generally considered safe for industrial use, but precautions should be taken. It is not highly toxic, but prolonged or high-level exposure to dust and fumes may cause irritation. Skin contact should be avoided, and proper ventilation is necessary during handling. Protective equipment such as gloves and goggles should be used.

How should Thulium (CAS: 7440-30-4) be stored?

Thulium should be stored in a tightly closed container in a cool, dry place away from heat and direct sunlight. It should be kept in a well-ventilated area to prevent the accumulation of flammable gases. Containers should be clearly labeled and stored in a secure location to prevent theft or misuse. Exposure to moisture and air should be minimized to maintain the integrity of the compound.