Substance profile
tert-Butylarsine
tert-Butylarsine is a chemical substance with the molecular formula C4H9As.
01 · Identification
What tert-Butylarsine is
tert-Butylarsine is a chemical substance with the molecular formula C4H9As. Its molecular formula is C4H9As and its molecular weight is 132.04 g/mol.
Under the GHS it carries the signal word Danger.
02 · Identifiers
tert-Butylarsine identifiers and molecular data
tert-Butylarsine CAS number and EC number
tert-Butylarsine molecular formula and molecular weight
03 · GHS classification
tert-Butylarsine hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
tert-Butylarsine pictograms and signal word
tert-Butylarsine hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Pyrophoric liquids or Pyrophoric solids | Category 1 | H250 | GHS02 |
| Acute toxicity - inhalation GHS chapter 3.1 | Category 1 or 2 | H330 | GHS06 |
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.
tert-Butylarsine hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H250 | Catches fire spontaneously if exposed to air. |
| H330 | Fatal if inhaled. |
This page lists only the codes assigned to tert-Butylarsine. 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 tert-Butylarsine
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 tert-Butylarsine 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
tert-Butylarsine precautionary statements
CLP Annex VI assigns 4 precautionary statements to tert-Butylarsine. 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
tert-Butylarsine 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 | трет -бутиларсин |
| Spanish español | terc -Butilarsina |
| Czech čeština | terc -butylarsin |
| Danish dansk | tert -butylarsin |
| German Deutsch | tert -Butylarsin |
| Estonian eesti | tert -butüülarsaan |
| Greek ελληνικά | tert -βουτυλαρσίνη |
| English English | tert -butylarsine |
| French français | tert -butylarsine |
| Croatian hrvatski | tert -butilarsin |
| Italian italiano | terz -butilarsina |
| Latvian latviešu | terc -butilarsīns |
| Lithuanian lietuvių | tret -butilarsanas |
| Hungarian magyar | terc -butilarzin |
| Maltese Malti | terz -butilarsin |
| Dutch Nederlands | tert -butylarsine |
| Polish polski | tert -butyloarsan |
| Portuguese português | terc -butilarsina |
| Romanian română | terț -butilarsină |
| Slovak slovenčina | terc -butylarzán |
| Slovenian slovenščina | terc -butilarzin |
| Finnish suomi | tert -butyyliarsiini |
| Swedish svenska | tert -butylarsin |
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
tert-Butylarsine GHS label elements
Everything CLP Annex VI fixes for tert-Butylarsine, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
tert-Butylarsine
- Catches fire spontaneously if exposed to air.
- Fatal if inhaled.
- Do not breathe dust/fume/gas/mist/vapours/spray.
- Use only outdoors or in a well-ventilated area.
- IF INHALED:
- Immediately call a POISON CENTER/doctor/…
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open tert-Butylarsine in the GHS label constructor →
07 · Health hazards
tert-Butylarsine health hazards and exposure limits
tert-Butylarsine hazard summary
Causes other changes of the liver, kidney, ureter, and bladder in inhalation lethal-concentration studies of rats; [RTECS] Pyrophoric; Causes burns; Inhalation, although unlikely due to high reactivity, may be fatal; Chronic overexposure may cause CNS, skin, eye, respiratory tract, liver, and kidney effects; [Akzo Nobel MSDS] See Diethylarsine.
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
tert-Butylarsine occupational exposure limits
| Limit | Value | Source |
|---|---|---|
| PEL | 0.5 [mg/m3], as As | Haz-Map, Information on Hazardous Chemicals and Occupational Diseases |
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
tert-Butylarsine 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.
tert-Butylarsine vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 125 mmHg | Haz-Map |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Questions
tert-Butylarsine — frequently asked questions
What is the CAS number of tert-Butylarsine?
The CAS number of tert-Butylarsine is 4262-43-5. Its EC number is 423-320-6.
What is the chemical formula of tert-Butylarsine?
The molecular formula of tert-Butylarsine is C4H9As and its molecular weight is 132.04 g/mol.
What does a tert-Butylarsine label have to show?
Under CLP Annex VI the label for tert-Butylarsine carries the pictograms Flame and Skull and crossbones and the signal word is Danger.
Is tert-Butylarsine flammable?
Yes. CLP Annex VI assigns tert-Butylarsine H250 — catches fire spontaneously if exposed to air.
Is tert-Butylarsine a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for tert-Butylarsine. Annex VI is a list of agreed classifications, not a list of substances found safe, so this is an absence of a classification rather than a clean bill of health.
What is the exposure limit for tert-Butylarsine?
The US occupational exposure limit reported for tert-Butylarsine is 0.5 [mg/m3], as As (Haz-Map, Information on Hazardous Chemicals and Occupational Diseases). 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.
Nearby
Substances next to tert-Butylarsine
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