Substance profile
Gallium arsenide
Gallium arsenide is cubic crystals, dark gray with metallic sheen with a garlic odor when moistened.
01 · Identification
What Gallium arsenide is
Gallium arsenide is cubic crystals, dark gray with metallic sheen with a garlic odor when moistened. It melts at 1238 °C.
Under the GHS it carries the signal word Danger. It is classed as carcinogens.
02 · GHS classification
Hazards and label elements
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
| Code | Hazard statement |
|---|---|
| H350 | May cause cancer <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>. |
| H360F | May damage fertility. |
| H372 | Causes damage to organs <or state all organs affected, if known> through prolonged or repeated exposure <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>. |
Precautionary statements: P201, P260, P270, P280, P308, P313, P314
03 · Physical and chemical properties
Gallium arsenide properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 1238 °C (2260.4 °F) | HSDB | |
| 1238 °C (2260 °F) | CAMEO | ||
| Density | 5.31 g/cm³ | OSHA | |
| 5.3176 g/cm³ | at 25 °C | HSDB | |
| 5.31 g/cm³ | at 25 °C | CAMEO | |
| Solubility | <1 mg/mg in DMSO, 95% ethanol, methanol, and acetone; soluble in hydrochloric acid | HSDB | |
| In water, <1 mg/ml @ 20 °C | at 20 °C | HSDB | |
| less than 1 mg/mL at 68 °F (NTP, 1992) | at 20 °C | CAMEO |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Handling and storage
Storing and handling Gallium arsenide
Storage conditions
Protect container against physical damage. Store in well ventilated area away from food or food products and combustible materials. /Inorganic arsenic cmpd/
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
Can react with steam, acids, & acid fumes to evolve the deadly poisonous arsine. Molten gallium arsenide attacks quartz.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
GALLIUM ARSENIDE can react with steam, acids and acid fumes. Reacts with bases with evolution of hydrogen. Attacked by cold concentrated hydrochloric acid. Readily attacked by the halogens. The molten form attacks quartz. (NTP, 1992)
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Gallium arsenide in the storage compatibility matrix →