Substance profile
2-methoxy-2-methylbutane
2-methoxy-2-methylbutane: gas Vapor.
01 · Identification
What 2-methoxy-2-methylbutane is
2-methoxy-2-methylbutane: gas Vapor. It boils at 86.3 °C, melts at -80 °C, is very soluble in water.
Under the GHS it carries the signal word Danger. It is classed as flammable agents - 4th degree.
02 · Identifiers
2-methoxy-2-methylbutane identifiers and molecular data
2-methoxy-2-methylbutane CAS number and EC number
2-methoxy-2-methylbutane molecular formula and molecular weight
Other names for 2-methoxy-2-methylbutane
- tert-amyl methyl ether
03 · GHS classification
2-methoxy-2-methylbutane hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
2-methoxy-2-methylbutane pictograms and signal word
2-methoxy-2-methylbutane hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Flammable liquids GHS chapter 2.6 | Category 2 | H225 | GHS02 |
| Acute toxicity - oral GHS chapter 3.1 | Category 4 | H302 | GHS07 |
| Specific target organ toxicity - single exposure GHS chapter 3.8 | Category 3 narcotic | H336 | GHS07 |
2-methoxy-2-methylbutane hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H225 | Highly flammable liquid and vapour. |
| H302 | Harmful if swallowed. |
| H336 | May cause drowsiness or dizziness. |
This page lists only the codes assigned to 2-methoxy-2-methylbutane. 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 2-methoxy-2-methylbutane
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 2-methoxy-2-methylbuta… 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
2-methoxy-2-methylbutane precautionary statements
CLP Annex VI assigns 9 precautionary statements to 2-methoxy-2-methylbutane. 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
2-methoxy-2-methylbutane 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 | 2-метил-2-метоксибутан трет -амилметилов етер |
| Spanish español | 2-Metoxi-2-metilbutano éter de terc -amilo y metilo |
| Czech čeština | 2-methoxy-2-methylbutan terc -pentyl(methyl)ether |
| Danish dansk | 2-methoxy-2-methylbutan tert -amylmethylether |
| German Deutsch | 2-Methoxy-2-methylbutan tert -Amylmethylether |
| Estonian eesti | 2-metoksü-2-metüülbutaan tert -amüülmetüüleeter |
| Greek ελληνικά | 2-μεθοξυ-2-μεθυλοβουτάνιο tert -αμυλομεθυλαιθέρας |
| English English | 2-methoxy-2-methylbutane tert -amyl methyl ether |
| French français | 2-méthoxy-2-méthylbutane oxyde de tert -amyle et de méthyle |
| Croatian hrvatski | 2-metoksi-2-metilbutan tert -amil-metil-eter |
| Italian italiano | 2-metil-2-metossibutano terz -amil metil etere |
| Latvian latviešu | 2-metoksi-2-metilbutāns terc -amilmetilēteris |
| Lithuanian lietuvių | 2-metoksi-2-metilbutanas tret -amilmetileteris |
| Hungarian magyar | 2-metoxi-2-metilbután terc -amil-metil-éter |
| Maltese Malti | 2-metossi-2-metilbutan eter tal-metil ta’ tert -amil |
| Dutch Nederlands | 2-methoxy-2-methylbutaan tert -amylmethylether |
| Polish polski | 2-metoksy-2-metylobutan eter tert -amylowometylowy |
| Portuguese português | 2-metoxi-2-metilbutano éter terc- amílico e metílico |
| Romanian română | 2-metoxi-2-metilbutan terț -amil metil eter |
| Slovak slovenčina | 2-metoxy-2-metylbután metyl( terc -pentyl)éter |
| Slovenian slovenščina | 2-metoksi-2-metilbutan terc -amil metil eter |
| Finnish suomi | 2-metoksi-2-metyylibutaani tert -amyylimetyylieetteri |
| Swedish svenska | 2-metoxi-2-metylbutan tert -amylmetyleter |
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
2-methoxy-2-methylbutane GHS label elements
Everything CLP Annex VI fixes for 2-methoxy-2-methylbutane, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
2-methoxy-2-methylbutane
- Highly flammable liquid and vapour.
- Harmful if swallowed.
- May cause drowsiness or dizziness.
- Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
- Keep container tightly closed.
- Use explosion-proof [electrical/ventilating/lighting/…] equipment.
- Use only non-sparking tools.
- Do not eat, drink or smoke when using this product.
- IF SWALLOWED:
- Call a POISON CENTER/doctor/… if you feel unwell.
- Rinse mouth.
- Store in a well-ventilated place.
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open 2-methoxy-2-methylbutane in the GHS label constructor →
07 · Health hazards
2-methoxy-2-methylbutane health hazards and exposure limits
2-methoxy-2-methylbutane hazard summary
Toxicity in animal studies includes CNS depression and increased liver weights; TAME is embryotoxic in high-dose studies of pregnant mice and rats; [ACGIH]
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
2-methoxy-2-methylbutane carcinogenicity classification
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.
08 · Physical and chemical properties
2-methoxy-2-methylbutane 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.
2-methoxy-2-methylbutane boiling point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 86.3 °C (187.3 °F) | HSDB | |
| 86.11 °C (187 °F) | OSHA |
2-methoxy-2-methylbutane melting point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Melting point | -80 °C (-112 °F) | ICSC |
2-methoxy-2-methylbutane density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Density | 0.77 g/cm³ | ICSC | |
| 0.766 g/cm³ | at 25 °C | HSDB |
2-methoxy-2-methylbutane solubility
| Property | Value | Conditions | Source |
|---|---|---|---|
| Solubility | Very soluble ethyl ether, ethanol | HSDB | |
| In water, 1.07X10+4 mg/L at 20 °C | at 20 °C | HSDB |
2-methoxy-2-methylbutane vapor pressure
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor pressure | 75.21 mmHg | OSHA | |
| 67.5056 mmHg | at 20 °C | ICSC | |
| 75.2 mmHg | at 25 °C | HSDB |
2-methoxy-2-methylbutane flash point
| Property | Value | Conditions | Source |
|---|---|---|---|
| Flash point | -7 °C (19.4 °F) | HSDB | |
| -11 °C (12.2 °F) | ICSC |
2-methoxy-2-methylbutane autoignition temperature
| Property | Value | Conditions | Source |
|---|---|---|---|
| Autoignition temperature | 415 °C (779 °F) | HSDB | |
| 430 °C (806 °F) | ICSC |
2-methoxy-2-methylbutane lower explosive limit (LEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Lower explosive limit (LEL) | 1.1 % by volume | HSDB | |
| Vapor/air mixtures are explosive. | HSDB |
2-methoxy-2-methylbutane upper explosive limit (UEL)
| Property | Value | Conditions | Source |
|---|---|---|---|
| Upper explosive limit (UEL) | 7.1 % by volume | HSDB |
2-methoxy-2-methylbutane vapor density
| Property | Value | Conditions | Source |
|---|---|---|---|
| Vapor density | 3.6 (air = 1) | ICSC | |
| 0.77 (air = 1) | OSHA |
2-methoxy-2-methylbutane odor threshold
| Property | Value | Conditions | Source |
|---|---|---|---|
| Odor threshold | Odor Threshold Low: 0.02 [ppm] | Haz-Map | |
| Detection odor threshold from ACGIH | Haz-Map |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
09 · Fire and explosion
2-methoxy-2-methylbutane fire and explosion behaviour
These are descriptions rather than measured values, so they are kept out of the table above and quoted here with the source that reported them.
2-methoxy-2-methylbutane fire potential
Highly flammable
Source: Hazardous Substances Data Bank (HSDB)
10 · Handling and storage
2-methoxy-2-methylbutane storage and handling
2-methoxy-2-methylbutane safe storage
Fireproof.
Source: ILO-WHO International Chemical Safety Cards (ICSCs)
2-methoxy-2-methylbutane storage conditions
Keep container tightly closed in a dry and well-ventilated place. Containers which are opened must be carefully resealed and kept upright to prevent leakage. Store in cool place.
Source: Hazardous Substances Data Bank (HSDB)
2-methoxy-2-methylbutane incompatible materials
Materials to avoid: strong oxidizing agents
Source: Hazardous Substances Data Bank (HSDB)
Planning storage for a mix of chemicals? Check 2-methoxy-2-methylbutane in the storage compatibility matrix →
11 · Questions
2-methoxy-2-methylbutane — frequently asked questions
What is the CAS number of 2-methoxy-2-methylbutane?
The CAS number of 2-methoxy-2-methylbutane is 994-05-8. Its EC number is 213-611-4.
What does a 2-methoxy-2-methylbutane label have to show?
Under CLP Annex VI the label for 2-methoxy-2-methylbutane carries the pictograms Flame and Exclamation mark and the signal word is Danger.
Is 2-methoxy-2-methylbutane flammable?
Yes. CLP Annex VI assigns 2-methoxy-2-methylbutane H225 — highly flammable liquid and vapour. The flash point reported for it is -7 °C (19.4 °F) (HSDB).
Is 2-methoxy-2-methylbutane a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for 2-methoxy-2-methylbutane. 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. IARC places it in Group 3: not classifiable as to its carcinogenicity to humans.
What is the boiling point of 2-methoxy-2-methylbutane?
The boiling point reported for 2-methoxy-2-methylbutane is 86.3 °C (187.3 °F) (HSDB).
What is the melting point of 2-methoxy-2-methylbutane?
The melting point reported for 2-methoxy-2-methylbutane is -80 °C (-112 °F) (ICSC).
How should 2-methoxy-2-methylbutane be stored?
CLP Annex VI assigns 2-methoxy-2-methylbutane the storage statement P403. Keep container tightly closed in a dry and well-ventilated place. Containers which are opened must be carefully resealed and kept upright to prevent leakage. Store in cool place. (Hazardous Substances Data Bank (HSDB))
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