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 · Identifiers
Gallium arsenide identifiers and molecular data
Gallium arsenide CAS number and EC number
Gallium arsenide molecular formula and molecular weight
03 · GHS classification
Gallium arsenide hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Gallium arsenide pictograms and signal word
Gallium arsenide hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Carcinogenicity GHS chapter 3.6 | Category 1A or 1B | H350 | GHS08 |
| Specific target organ toxicity - repeated exposure GHS chapter 3.9 | Category 1 | H372 | GHS08 |
Where two values are shown with “or”, the hazard statement is shared by more than one category or by more than one class, and the code alone does not say which. H272, for example, belongs to oxidising liquids and to oxidising solids — the physical state decides. The binding answer for a specific entry is in the CLP Annex VI table itself.
Gallium arsenide hazard statements (H-codes)
| 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>. |
This page lists only the codes assigned to Gallium arsenide. The full reference lives on the hazard statements hub, the precautionary statements hub and the GHS pictograms hub.
Safety Data Sheet
Getting an SDS for Gallium arsenide
A Safety Data Sheet is written for a product, not for a substance: the supplier of the grade you actually buy issues it, so two suppliers of Gallium arsenide issue two different sheets. That is why there is no single authoritative SDS for a substance to download — what there is, is the job of collecting the sheets for the products you hold and keeping them current as suppliers revise them.
04 · Precautionary statements
Gallium arsenide precautionary statements
CLP Annex VI assigns 7 precautionary statements to Gallium arsenide. They are grouped the way a label groups them: what to do before handling, what to do when something has already happened, how to store it and how to dispose of it.
Prevention
What to do before and during handling so the hazard never happens.
Response
What to do once exposure, spillage or fire has already happened.
Reading the notation. … is a blank the supplier fills in — not a truncated sentence.· [square brackets] mark a part printed only when it applies.
05 · Names in the regulation
Gallium arsenide name in 23 EU languages
CLP Annex VI Part 3 is published in every language edition of the regulation, and the identification column is written out in each of them. Nothing below is translated by us: each line is the name as that edition prints it. Under Art. 18(2) the substance name from Annex VI is a lawful product identifier, so this is the wording to put on a label going to that market — and where the cell lists several designations, any one of them qualifies.
| Language | Name in CLP Annex VI Part 3 |
|---|---|
| Bulgarian български | галиев арсенид |
| Spanish español | arseniuro de galio |
| Czech čeština | arsenid galia |
| Danish dansk | galliumarsenid |
| German Deutsch | Galliumarsenid |
| Estonian eesti | galliumarseniid |
| Greek ελληνικά | αρσενικούχο γάλλιο |
| English English | gallium arsenide |
| French français | arséniure de gallium |
| Croatian hrvatski | galijev arsenid |
| Italian italiano | arseniuro di gallio |
| Latvian latviešu | gallija arsenīds |
| Lithuanian lietuvių | galio arsenidas |
| Hungarian magyar | gallium-arzenid |
| Maltese Malti | arsenjur tal-gallju |
| Dutch Nederlands | galliumarsenide |
| Polish polski | arsenek galu |
| Portuguese português | arsenieto de gálio |
| Romanian română | arseniură de galiu |
| Slovak slovenčina | arzenid galitý |
| Slovenian slovenščina | galijev arzenid |
| Finnish suomi | Galliumarsenidi |
| Swedish svenska | galliumarsenid |
All 23 language editions of Annex VI carry this entry. Irish is the twenty-fourth official EU language and has no line here for a different reason: no consolidated CLP text has ever been published in Irish, so there is no Irish edition of Annex VI to quote a name from. Source: consolidated CLP, CELEX 02008R1272, language editions. © European Union, https://eur-lex.europa.eu — only the electronic Official Journal of the European Union is authentic.
06 · Label elements
Gallium arsenide GHS label elements
Everything CLP Annex VI fixes for Gallium arsenide, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
Gallium arsenide
- May cause cancer <state route of exposure if it is conclusively proven that no other routes of exposure cause the hazard>.
- May damage fertility.
- 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>.
- Obtain special instructions before use.
- Do not breathe dust/fume/gas/mist/vapours/spray.
- Do not eat, drink or smoke when using this product.
- Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…
- IF exposed or concerned:
- Get medical advice/attention.
- Get medical advice/attention if you feel unwell.
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open Gallium arsenide in the GHS label constructor →
07 · Health hazards
Gallium arsenide health hazards and exposure limits
Gallium arsenide carcinogenicity classification
Under the conditions of these 2-year inhalation studies, there was no evidence of carcinogenic activity of gallium arsenide in male F344/N rats exposed to 0.01, 0.1, or 1.0 mg/m3. There was clear evidence of carcinogenic activity in female F344/N rats based on increased incidences of benign and malignant neoplasms in the lung. Increased incidences of benign neoplasms of the adrenal medulla and increased incidences of mononuclear cell leukemia were also considered to be exposure related. There was no evidence of carcinogenic activity in male or female B6C3F1 mice exposed to 0.1, 0.5, or 1.0 mg/m3.
Source: US National Toxicology Program · TR-492: Toxicology and Carcinogenesis Studies of Gallium Arsenide (CASRN 1303-00-0) in F344/N Rats and B6C3F1 Mice (Inhalation Studies) (2000 )
Classification of carcinogenicity: 1) evidence in humans: sufficient; 2) evidence in animals: limited. Overall summary evaluation of carcinogenic risk to humans is Group 1: Carcinogenic to humans. NOTE: This evaluation applies to the group of chemicals as a whole and not necessarily to all individual chemicals within the group. /Arsenic and arsenic compounds/
Source: Hazardous Substances Data Bank (HSDB)
CLASSIFICATION: A; human carcinogen. BASIS FOR CLASSIFICATION: Based on sufficient evidence from human data. An increased lung cancer mortality was observed in multiple human populations exposed primarily through inhalation. Also, increased mortality from multiple internal organ cancers (liver, kidney, lung, and bladder) and an increased incidence of skin cancer were observed in populations consuming drinking water high in inorganic arsenic. HUMAN CARCINOGENICITY DATA: Sufficient. ANIMAL CARCINOGENICITY DATA: Inadequate. /Inorganic Arsenic/
Source: Hazardous Substances Data Bank (HSDB)
An IARC group and a CLP classification answer different questions. IARC judges whether the evidence for cancer in humans is strong enough; CLP Annex VI is the legally binding EU classification. A substance can carry one and not the other.
Gallium arsenide occupational exposure limits
| Limit | Value | Source |
|---|---|---|
| PEL | 0.01 mg/m³ [5 µg/m³ Action Level] (as As) | Occupational Safety and Health Administration (OSHA) |
| REL | 0.002 mg/m³ [15 minutes] | Occupational Safety and Health Administration (OSHA) |
| IDLH | 5 mg/cu m (as AS); NIOSH considers arsenic (inorganic cmpd, as As) to be a potential occupational carcinogen. /Arsenic (inorganic cmpd, as As)/ | Hazardous Substances Data Bank (HSDB) |
These are United States values. The European Union sets its own indicative and binding limits, and the figure that applies at a given workplace is the one in the local regulation — not the one shown here.
08 · 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.
Gallium arsenide melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | 1238 °C (2260.4 °F) | HSDB | |
| 1238 °C (2260 °F) | CAMEO |
Gallium arsenide density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 5.31 g/cm³ | OSHA | |
| 5.3176 g/cm³ | at 25 °C | HSDB | |
| 5.31 g/cm³ | at 25 °C | CAMEO |
Gallium arsenide solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| 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.
09 · Handling and storage
Gallium arsenide storage 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)
Gallium arsenide 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)
Gallium arsenide 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 →
10 · Questions
Gallium arsenide — frequently asked questions
What is the CAS number of Gallium arsenide?
The CAS number of Gallium arsenide is 1303-00-0. Its EC number is 215-114-8.
What does a Gallium arsenide label have to show?
Under CLP Annex VI the label for Gallium arsenide carries the pictogram Health hazard and the signal word is Danger.
Is Gallium arsenide flammable?
CLP Annex VI assigns Gallium arsenide no flammability hazard class. That is not a statement that it cannot burn: the harmonised list only records the hazards that were assessed for it.
Is Gallium arsenide a carcinogen?
Yes. CLP Annex VI classifies Gallium arsenide as a category 1A or 1B carcinogen and assigns it H350: may cause cancer.
What is the exposure limit for Gallium arsenide?
The US occupational exposure limit reported for Gallium arsenide is 0.01 mg/m³ [5 µg/m³ Action Level] (as As) (Occupational Safety and Health Administration (OSHA)). Limits differ by country: the EU sets its own indicative and binding values, and the figure that applies at a given workplace is the one in the local regulation.
What is the melting point of Gallium arsenide?
The melting point reported for Gallium arsenide is 1238 °C (2260.4 °F) (HSDB).
How should Gallium arsenide be stored?
Protect container against physical damage. Store in well ventilated area away from food or food products and combustible materials. /Inorganic arsenic cmpd/ (Hazardous Substances Data Bank (HSDB))
Nearby
Substances next to Gallium arsenide
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