tert-Butyl methyl ether
- CAS Number
- 1634-04-4
- HSN Code
- 29091990
- Molecular Formula
- C5H12O
- Catalogue Number
- AL0988
- Purity
- ≥ 99%
- Molecular Weight
- 88.15 g/mol
Complies with : IP | BP | USP | EP | ACS
ISO 9001
ISO 14001
GMP
COA with every batch
Key Properties
Methyl tert-butyl ether is an ether having methyl and tert-butyl as the two alkyl components. It has a role as a metabolite, a non-polar solvent and a fuel additive.
Also known as MTBE, Methyl tert-butyl ether.
- Catalogue No.
- AL0988
- CAS Number
- 1634-04-4
- Molecular Formula
- C5H12O
- Molecular Weight
- 88.15 g/mol
- HSN Code
- 29091990
- Grade
- 99%
- Product Form
- Substance
Melting point: -108.6 °C; Boiling point: 55.1 °C; Flash point: -80 °C; Density: 0.7353 g/cu cm at 25 °C; Solubility: Solubility of water in methyl t-butyl ether: 1.5 g/100 g; unstable in acid solution.
- Appearance
- Liquid
- Shelf Life
- -
- Packaging
- Available in: 500 ml glass bottle, 2.5 Lt glass bottle
- Storage
- Fireproof. Separated from strong oxidants and strong acids.
1.1 — Product identifier
- Chemical Name
- tert-Butyl methyl ether
- Catalogue No.
- AL0988
- Product form
- Substance
- CAS Number
- 1634-04-4
- EC Number
- 216-653-1
- Grade
- 99%
- EC Index Number
- 603-103-00-4
- Chemical Formula
- C5H12O
- HSN Code
- 29091990
- Synonyms
- MTBE, Methyl tert-butyl ether
1.2 — Relevant identified uses of the substance or mixture and uses advised against
- Use of the substance/mixture
- Solvent in organic synthesis and extraction.
- Uses advised against
- Not specified
1.3 — Details of the supplier of the safety data sheet
- Company identification
- Address:- 102, B wing, Savgan Heights, RTO Lane,Andheri (W), Mumbai-400 053Maharashtra, India.
1.4 — Emergency Contact Details
- Phone / e-Mail
- Phone : +91 22 26317055 Mobile : +91 9820385757 e-mail : info@alphachemika.co.in
2.1 — Classification of the substance or mixture
- Classification according to Regulation (EC) No 1272/2008
- Flam. Liq. 2; Skin Irrit. 2
- Classification source
- ECHA C&L Inventory via PubChem CID 15413 - hazard classes notified by at least 50% of companies; pictograms and signal word derived from those statements
2.2 — Label elements
- Hazard pictograms
- Flammable, Irritant
- Signal word
- Danger
- Hazard statements
- H225: Highly Flammable liquid and vapor; H315: Causes skin irritation
- Precautionary statements
- P210, P233, P240, P241, P242, P243, P264, P280, P302+P352, P303+P361+P353, P321, P332+P317, P362+P364, P370+P378, P403+P235, P501
2.3 — Other hazards
- Other hazards
- May form explosive peroxides upon prolonged storage.
3.1 — Substance
- Name
- tert-Butyl methyl ether
- CAS No.
- 1634-04-4
4.1 — Description of first aid measures
- First-aid measures after inhalation
- Move victim to fresh air; call emergency medical care. If not breathing, give artificial respiration.
- First-aid measures after skin contact
- Wash with soap and water. Seek medical attention if irritation persists.
- First-aid measures after eye contact
- Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing and seek medical attention.
- First-aid measures after ingestion
- If victim is unconscious or having convulsions, do nothing except keep victim warm.
4.2 — Most important symptoms and effects, both acute and delayed
- Symptoms relating to use
- Headache, dizziness, nausea, respiratory irritation.
4.3 — Indication of any immediate medical attention and special treatment needed
- General information
- Treat symptomatically. Show this safety data sheet to the treating physician.
5.1 — Extinguishing media
- Suitable extinguishing media
- Water spray, carbon dioxide, dry chemical powder, foam.
- Unsuitable extinguishing media
- Not specified
5.2 — Special hazards arising from the substance or mixture
- Special procedures
- Hazardous decomposition products formed under fire conditions - Carbon oxides.
5.3 — Advice for firefighters
- Protection during firefighting
- Do not enter fire area without proper protective equipment, including respiratory protection.
6.1.1 — For non-emergency personnel
- Emergency procedures
- Evacuate area. Remove all sources of ignition. Ventilate area.
6.3 — Methods and material for containment and cleaning up
- Methods for cleaning up
- Personal protection: filter respirator for organic gases and vapours adapted to the airborne concentration of the substance. Remove all ignition sources. Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent.
6.4 — Reference to other sections
- Reference
- Not specified
7.1 — Precautions for safe handling
- Precautions for safe handling
- Use in a well-ventilated area. Avoid contact with skin and eyes. Keep away from heat and open flames.
- Hygiene measures
- Wash hands and other exposed areas with mild soap and water before eating, drinking or smoking and when leaving work.
7.2 — Conditions for safe storage, including any incompatibilities
- Storage conditions
- Fireproof. Separated from strong oxidants and strong acids.
8.2 — Exposure controls
- Hand protection
- Handle with gloves.
- Eye protection
- Face shield and safety glasses. Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU).
- Skin and body protection
- Wear suitable protective clothing
- Respiratory protection
- Use appropriate respiratory protection if ventilation is inadequate.
9.1 — Information on basic physical and chemical properties
- Physical state
- Liquid
- Colour
- Colorless
- Odour
- Terpene-like odor
- Odour threshold
- Not specified
- pH value
- Not applicable
- Relative evaporation rate (butylacetate=1)
- Not specified
- Melting point
- -108.6 °C
- Freezing point
- Not specified
- Boiling point
- 55.1 °C
- Flash point
- -80 °C
- Auto-ignition temperature
- 435 °C
- Decomposition temperature
- Not specified
- Flammability (solid, gas)
- Flammable liquid
- Vapour pressure
- VP: 245 mm Hg at 25 °C
- Relative vapour density at 20°C
- Relative vapor density (air = 1): 3.0
- Density
- 0.7353 g/cu cm at 25 °C
- Solubility
- Solubility of water in methyl t-butyl ether: 1.5 g/100 g; unstable in acid solution
- Log Pow
- 0.94
- Viscosity, kinematic
- Not specified
- Viscosity, dynamic
- Not specified
- Explosive properties
- Not explosive
- Oxidising properties
- Not oxidizing
- Explosive limits
- 1.8 - 7.6% (v/v) in air
10.1 — Reactivity
- Reactivity
- Stable under normal conditions. Reacts with strong oxidizing agents.
10.2 — Chemical stability
- Chemical stability
- Stable under recommended storage conditions.
10.3 — Possibility of hazardous reactions
- Possibility of hazardous reactions
- Reacts violently with strong oxidants. This generates fire hazard. Decomposes on contact with acids.
10.4 — Conditions to avoid
- Conditions to avoid
- Avoid contact with incompatible materials and excessive heat.
10.5 — Incompatible materials
- Incompatible materials
- Strong oxidizing agents, strong acids.
10.6 — Hazardous decomposition products
- Hazardous decomposition products
- When heated to decomposition it emits acrid smoke and irritating fumes.
11.1 — Information on toxicological effects
- Acute toxicity
- LD50 Rat oral 4 gkg (4,000 mgkg); LC50 Rat inhalation 23,576 ppm/4 hr; LC50 Mouse inhalation 180,000 ppm/ 10 min
- Skin corrosion/irritation
- H315: Causes skin irritation
- Serious eye damage/irritation
- Not classified (based on available data)
- Respiratory or skin sensitisation
- Not classified (based on available data)
- Germ cell mutagenicity
- Not classified (based on available data)
- Carcinogenicity
- Not classified (based on available data)
- Specific target organ toxicity (single exposure)
- Not classified (based on available data)
- Specific target organ toxicity (repeated exposure)
- Not classified (based on available data)
12.1 — Toxicity
- Toxicity information
- Not specified
12.2 — Persistence - degradability
- Persistence - degradability
- Not specified
12.3 — Bioaccumulative potential
- Bioaccumulative potential
- Not specified
12.4 — Mobility in soil
- Mobility in soil
- Not specified
12.6 — Other adverse effects
- Environmental precautions
- Not specified
13.1 — Waste treatment methods
- Additional Info
- Dispose of contents/container in accordance with local, regional, national and international regulations.
14.1 — UN number
- UN-No. (ADR)
- UN 2398
- UN-No. (IMDG)
- UN 2398
- UN-No. (IATA)
- UN 2398
- UN-No. (ADN)
- UN 2398
- UN-No. (RID)
- UN 2398
14.2 — UN proper shipping name
- Proper Shipping Name (ADR)
- tert-Butyl methyl ether
- Proper Shipping Name (IMDG)
- tert-Butyl methyl ether
- Proper Shipping Name (IATA)
- tert-Butyl methyl ether
- Proper Shipping Name (ADN)
- tert-Butyl methyl ether
- Proper Shipping Name (RID)
- tert-Butyl methyl ether
14.3 — Transport hazard class(es)
- Transport hazard class(es)
- 3
14.4 — Packing group
- Packing group (ADR)
- II
- Packing group (IMDG)
- II
- Packing group (IATA)
- II
- Packing group (ADN)
- II
- Packing group (RID)
- II
14.5 — Environmental hazards
- Dangerous for the environment
- Not specified
- Marine pollutant
- Not specified
- Other information
- No supplementary information available
15.1 — Safety, health and environmental regulations/legislation specific for the substance or mixture
- 15.1.1 EU-Regulations
- Not specified
Used as a solvent in organic synthesis and extraction, and historically as a fuel oxygenate additive.
ISO 9001
ISO 14001
GMP
COA with every batch
- Batch Number
- AL-2026-AL2012B
- Manufacturing Date
- September-2026
- Expiry Date
- September-2031
- Molecular Weight
- 88.15 g/mol
| Test | Standard | Observed |
|---|---|---|
| Assay | ≥ 99% | 99.5% |
| Density | 0.740 - 0.745 g/mL | 0.742 g/mL |
| Boiling Point | 54 - 56 °C | 55 °C |
| Moisture Content | ≤ 0.5% | 0.3% |
| Residue on Ignition | ≤ 0.01% | 0.005% |
| Related Substances | None detected | None detected |
The above product is expected to comply with 99% grade specification.
Technical Data Sheet
| Grade | Assay/Purity | Melting/Boiling Point | Moisture/LOD | Residue on Ignition | Related Substances | Solubility |
|---|---|---|---|---|---|---|
| 99% | ≥ 99% | m.p. -108.6 °C; b.p. 55.1 °C | ≤ 0.5% | ≤ 0.01% | None detected | Solubility of water in methyl t-butyl ether: 1.5 g/100 g; unstable in acid solution |
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