Gallium , 99.99%metalsbasis , 7440-55-3
Synonym(s):
GA006120;Gallium;Gallium element
CAS NO.：7440-55-3
Empirical Formula: Ga
Molecular Weight: 69.72
MDL number: MFCD00134045
EINECS: 231-163-8
PRODUCT Properties
| Melting point: | 29.8 °C(lit.) |
| Boiling point: | 2403 °C(lit.) |
| Density | 5.904 g/mL at 25 °C(lit.) |
| vapor pressure | 0.001Pa at 726.85℃ |
| storage temp. | 0-6°C |
| solubility | reacts with alkaline solutions |
| form | Solid and/or Liquid |
| color | Silvery or grayish metallic |
| Specific Gravity | 5.904 |
| Resistivity | 25.795 μΩ-cm, 30°C |
| Water Solubility | reacts with alkalies to evolve H2 [MER06] |
| Sensitive | air sensitive, moisture sensitive |
| Merck | 13,4367 |
| 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, but moisture sensitive. Incompatible with strong acids, strong bases, halogens, strong oxidizing agents. |
| InChIKey | PHMDYZQXPPOZDG-UHFFFAOYSA-N |
Description and Uses
Gallium is the 32nd most abundant element and constitutes 0.0005% of the Earth’s crust. It is found most commonly in association with zinc, germanium, and aluminum and is found primarily in the mineral germanite. Gallium(III) is the primary oxidation state for gallium compounds; its chemistry resembles that of aluminum(III).
Gallium and gallium compounds have numerous uses in
optoelectronics (e.g., LEDs), telecommunication, aerospace,
and many commercial and household items, for example,
alloys, computers, and DVDs. In addition, gallium is used in
special high-temperature thermometers, in place of mercury,
and in arc lamps.
Medically, gallium alloys are used in dental prostheses,
radioactive gallium has been used to locate bone lesions, and
nonradioactive gallium has been used as an antitumor agent.
Gallium has been used experimentally as an adjunct to cisplatinum
cancer chemotherapy. It has also been used to treat
hypercalcemia and inhibit bone resorption. Gallium maltolate
is under development as a treatment for Paget’s disease.
Safety
| Symbol(GHS) |   GHS05,GHS07 |
| Symbol(GHS) | GHS05,GHS07 |
| Symbol(GHS) | GHS05,GHS07 |
| Signal word | Warning |
| Signal word | Warning |
| Signal word | Warning |
| Hazard statements | H290-H302-H412 |
| Hazard statements | H290-H302-H412 |
| Hazard statements | H290-H302-H412 |
| Precautionary statements | P234-P264-P270-P273-P301+P312-P390 |
| Precautionary statements | P234-P264-P270-P273-P301+P312-P390 |
| Precautionary statements | P234-P264-P270-P273-P301+P312-P390 |
| Hazard Codes | C,Xi,T |
| Risk Statements | 36/38-34-23/24/25 |
| Safety Statements | 26-45-36/37/39-36-28-27 |
| RIDADR | UN 3264 8/PG 3 |
| WGK Germany | 3 |
| RTECS | LW8600000 |
| TSCA | Yes |
| HazardClass | 8 |
| PackingGroup | III |
| HS Code | 81129290 |
