NextSDS Logo
Safety Data Sheet EN

Methyl Tert-Butyl Ether (MTBE)

Get a free compliance audit

Upload your SDS inventory and get a detailed compliance report.

Get Free Audit
01

Identification

Product identifiers, regulatory numbers, and supplier information

Product Information

Product Name
Methyl Tert-Butyl Ether (MTBE)
Product Form
Ether
Product Code
PCS95007
Chemical Name
Methyl Tert-Butyl Ether (MTBE)
Synonyms
Tert-Butyl Methyl Ether; 2-Methoxy-2-Methylpropane; Gasoline Octane Enhancer; S-400

Regulatory Identifiers

CAS Number
N/A

Identified Uses

Chemical Feedstock, Octane Booster, Fuel Additive

Manufacturers & Suppliers

P

Petrochemical Corporation of Singapore (Private) Limited

manufacturer

100 Ayer Merbau Road, Singapore 628277

+65 68672102

Emergency Contacts

Asia Pacific

+65 3158 1074

China

+86 10 5100 3039

Europe, Israel & Americas

+44 (0) 1235 239 670

Middle East & Africa

+44 (0) 1235 239 671

02

Hazard Identification

GHS classification, signal word, pictograms, and hazard statements

Classified danger

Hazard Classifications

Flam. Liq. Cat. 2
Acute Tox. Cat. 5
Skin Irrit. Cat. 2
Eye Irrit. Cat. 2B
Carc. Cat. 2
STOT SE Cat. 3
Asp. Tox. Cat. 1

GHS Pictograms

GHS02 - Flammable

GHS02

GHS07 - Health hazard

GHS07

GHS08 - Serious health hazard

GHS08

Hazard Statements

H225 Highly Flammable liquid and vapour
H303 May be harmful if swallowed
H304 May be fatal if swallowed and enters airways
H315 Causes skin irritation
H320 Causes eye irritation
H335 May cause Respiratory Irritation
H336 May cause drowsiness or dizziness
H351 Suspected of causing cancer

Precautionary Statements

P201 Obtain special instructions before use.
P202 Do not handle until all safety precautions have been read and understood.
P210 Keep away from heat/sparks/open flames/hot surfaces. – No smoking.
P233 Keep container tightly closed.
P240 Ground/Bond container and receiving equipment
P241 Use explosion-proof electrical/ventilating/lighting equipment.
P242 Use only non-sparking tools.
P243 Take precautionary measures against static discharge.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash thoroughly after handling.
P264 Wash hands after handling
P271 Use only outdoors or in well-ventilated area.
P280 Wear protective gloves/protective clothing/eye protection/face protection
P280 Wear protective gloves
P301 + P310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. Do NOT induce vomiting.
P302 + P352 IF ON SKIN: Wash with plenty of soap and water.
P303 + P361 + P353 IF ON SKIN (or hair): Remove/take off immediately all contaminated clothing. Rinse skin with water/ shower.
P304 + P341 If INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
P305 + P351 + P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists, get medical advice/attention.
P308 + P313 IF exposed or concerned: Get medical attention/advice.
P312 Call a POISON CENTER/doctor/physician if you feel unwell.
P332 + P313 If skin irritation occurs: Get medical advice/attention.
P362 + P364 Take off contaminated clothing and wash before re-use.
P370 + P378 In case of fire: Use appropriate media for extinction.
P403 + P233 Store in well-ventilated place. Keep cool. Keep container tightly closed.
P405 Store locked up.
P501 Dispose of the contents in accordance to the local mandatory rules and regulations

Get a free compliance audit

Upload your SDS inventory and get a detailed compliance report

Free Audit
03

Composition / Information on Ingredients

Chemical components, concentration ranges, and hazardous substance identification

Type substance

The product contains Tert-Butyl Methyl Ether (MTBE) at a minimum of 98 wt%, with minor components including C4 Mixture (0.1-0.5 wt%), Tert-butyl alcohol (0.1-1.0 wt%), Di-isobutene (0.1-1.0 wt%), and Methanol (0.1-1.0 wt%).

Chemical Name CAS Number Concentration Hazardous
MTBE 1634-04-4 98% No
C4 --- 0.1 - 0.5% No
Tert-butyl alcohol 75-65-0 0.1 - 1% No
Di-isobutene 25167-70-8 0.1 - 1% No
Methanol 67-56-1 0.1 - 1% No
04

First Aid Measures

Emergency procedures for chemical exposure incidents

Inhalation

Remove source of contamination or have victim move to fresh air. If not breathing, ensure clear airway and institute cardiopulmonary resuscitation (CPR). If breathing is difficult, administer oxygen if available. Obtain medical advice immediately.

Skin contact

Flush with lukewarm, gently flowing water for at least 20 minutes, or until the chemical is removed. Under running water, remove contaminated clothing, shoes and leather goods (e.g. watchbands and belts). Obtain medical attention immediately. Completely decontaminate clothing, shoes and leather goods before re-use or discard.

Eye contact

Immediately flush the contaminated eye(s) with lukewarm, gently flowing water for at least 5 minutes or until the chemical is removed, while holding the eyelid(s) open. Obtain medical advice immediately.

Ingestion

Never give anything by mouth if victim is rapidly losing consciousness, is unconscious or convulsing. Have victim rinse mouth thoroughly with water. Do not induce vomiting. Have victim drink 240 to 300 ml (8 to 10 ozs) of water. If vomiting occurs naturally, have victim lean forward to reduce risk of aspiration. Repeat administration of water. Rinse mouth. Give slurry of activated charcoal in water to drink. Obtain medical attention immediately.

Immediate Medical Attention

Obtain medical advice immediately.

Medical Treatment

In the unlikely event of ingestion of MTBE, appropriate lavage procedures should be considered to avoid accidental aspiration of the product.

05

Firefighting Measures

Extinguishing media, specific hazards, and firefighter protection

Suitable media

Use dry chemical, alcohol foam, all purpose AFFF or carbon dioxide to extinguish fire. Small Fires: Dry chemical, CO2, water spray or alcohol-resistant foam. Large Fires: Water spray, fog or alcohol-resistant foam. Use water spray or fog.

Unsuitable media

Water may be ineffective. Do not use straight streams.

Specific hazards

Dangerous when exposed to heat or flame. Vapours form flammable or explosive mixtures with air at room temperature. Vapour or gas may spread to distant ignition sources and flash back. Vapours may concentrate in confined areas. Runoff to sewer may cause fire or explosion hazard. Containers may explode in heat of fire.

Instructions

Move containers from fire area if you can do it without risk. Fight fire from maximum distance or use unmanned hose holders or monitor nozzles. Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. Always stay away from tanks engulfed in fire. For massive fire, use unmanned hose holders or monitor nozzles; if this is impossible, withdraw from area and let fire burn. In case of fire: keep drums, etc., cool by spraying with water.

Firefighter Protection

Exposed fire fighters must wear MSHA/NIOSH approved positive pressure self-contained breathing apparatus with full-face mask and full protective clothing. Structural firefighters' protective clothing will only provide limited protection.

06

Accidental Release Measures

Spill cleanup procedures, containment, and environmental protection

Emergency procedures

Stay upwind. Keep out of low areas. Ventilate closed spaces before entering. If your facility or operation has an 'Oil or Hazardous Substance Contingency Plan', activate its procedures. Take immediate steps to stop and contain the spill. Stop leak if you can do it without risk. Do not touch or walk through spilled material.

Small spill

Take up with sand or other non-combustible absorbent material and place into containers for later disposal.

Large spill

Dike far ahead of liquid spill for later disposal.

Environmental

Do not wash away into sewer.

Cleanup methods

Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent and remove to safe place.

Materials: sand or inert absorbent

Related Products

Similar products with comparable safety profiles

07

Handling and Storage

Safe handling precautions, storage conditions, and workplace requirements

Handling

Use only with adequate ventilation. Do not eat, drink or smoke in areas of use or storage. Use good personal hygiene practices. Wash hands before eating, drinking, smoking, or using toilet facilities. Remove contaminated clothing and clean before reuse. Shower after work using soap and water. Empty containers may contain toxic, flammable/combustible or explosive residue or vapors. Do not cut, grind, drill, weld, reuse or dispose containers unless adequate precautions are taken against these hazards.

Storage

Store in tightly closed containers in cool, dry, isolated, well-ventilated area away from heat, sources of ignition and incompatibles. Storage should be Fireproof.

Hygiene

Do not eat, drink or smoke in areas of use or storage. Use good personal hygiene practices. Wash hands before eating, drinking, smoking, or using toilet facilities. Remove contaminated clothing and clean before reuse. Shower after work using soap and water.

Fire prevention

Keep away from heat, sparks, flame, and other sources of ignition. Ground lines and equipment used during transfer to reduce the possibility of static spark-initiated fire or explosion. Use non-sparking tools. Storage should be Fireproof.

08

Exposure Controls / PPE

Occupational exposure limits, engineering controls, and protective equipment

Engineering

Ventilation and other forms of engineering controls are often the preferred means for controlling chemical exposures.

Hands

When working with this substance, wear appropriate chemical protective gloves.

Eyes

Avoid eye contact with this material. Wear safety glasses or chemical goggles. Do not wear contact lenses when working with this substance.

Respiratory

If exposure limits are exceeded or if irritation is experienced, NIOSH approved respiratory protection should be worn. Normally, a NIOSH approved respirator for organic vapours are generally acceptable. For high concentrations and for oxygen-deficient atmospheres, use a NIOSH approved air-supplied respirator. Respiratory protection may be needed for non-routine or emergency situations.

Skin/Body

Avoid skin contact. Depending upon conditions of use, additional protection may be necessary such as face shield, apron, armcovers, etc.

09

Physical and Chemical Properties

Appearance, physical state, melting point, boiling point, and material characteristics

Density
---
Form
---
Kinematic Viscosity
Not Available
Physical State Data
liquid
Solidification Point
---
Voc Content
---
Flammability
---
Molecular Weight
88.2
Metal Corrosion
---
Bulk Density
---
Odor Threshold
Not available
Colour Intensity
---
Odor
Characteristic ethereal odour
Solubility In Water
4.8 G/100G OF WATER
Solubility
4.8 G/100G OF WATER
Auto Ignition Temperature
374 deg C
Upper Explosive Limit
15% [vol% in air]
Colour
colourless
Physical State
Clear ,colourless liquid
Relative Density
0.74
Softening Point
---
Properties Status
---
Cloud Point
---
Dynamic Viscosity
Not Available
Melting Point
-109 C
Solubility In Fat
---
Explosive Limits
---
Appearance
Clear ,colourless liquid
Decomposition Temperature
Not available
Ph
Not available
Boiling Point
55 deg C
Crystallisation Point
---
Vapor Pressure
27.9 kPa at 20 deg C
State Under Standard Conditions
---
Relative Evaporation Rate
8.04(Normal Butyl Acetate = 1)
Partition Coefficient
Not available
Freezing Point
-109 C
Lower Explosive Limit
2% [vol% in air]
Evaporation Rate
8.04 (Normal Butyl Acetate = 1)
Flash Point
~33 deg C (ASTM D56)
Vapor Density
3.1 g/l
10

Stability and Reactivity

Chemical stability, hazardous reactions, and incompatible materials

Stability

Stable under conditions of normal use.

Hazardous reactions

No hazardous polymerization. Much less likely to form peroxides than other ethers.

Avoid

Avoid high temperatures, open flames-sparks and the use of Un-grounded electrical equipment.

Incompatible

Avoid contact with strong oxidizers, acids or bases. The use of Viton and Flourel elastomers in seals is not recommended.

Decomposition

Combustion may produce CO, CO2 and reactive hydrocarbons.

12

Ecological Information

Environmental toxicity, biodegradation, and bioaccumulation data

The data for this section has not been processed yet.

13

Disposal Considerations

Waste treatment methods, disposal recommendations, and waste codes

Treatment

Recover or recycle if possible.

Disposal

It is the responsibility of the waste generator to determine the toxicity and physical properties of the material generated to determine the proper waste classification and disposal methods in compliance with applicable regulations.

14

Transport Information

UN numbers, shipping names, transport classes, and regulatory requirements

UN Number
2398
Shipping Name
METHYL tert-BUTYL ETHER
Transport Class
3
Packing Group
II
15

Regulatory Information

Chemical regulations, safety assessments, and compliance status

?

Frequently Asked Questions

Common questions about safety, handling, and properties

What other names is Methyl Tert-Butyl Ether (MTBE) known by?

Methyl Tert-Butyl Ether (MTBE) is also known as: Tert-Butyl Methyl Ether; 2-Methoxy-2-Methylpropane; Gasoline Octane Enhancer; S-400

What is the hazard signal word for Methyl Tert-Butyl Ether (MTBE)?

The signal word is danger.

What is the physical form of Methyl Tert-Butyl Ether (MTBE)?

Methyl Tert-Butyl Ether (MTBE) is a clear ,colourless liquid appearing as clear ,colourless liquid with colourless color. It has characteristic ethereal odour odor.

What is the solubility of Methyl Tert-Butyl Ether (MTBE)?

4.8 G/100G OF WATER

What is Methyl Tert-Butyl Ether (MTBE) used for?

Chemical Feedstock, Octane Booster, Fuel Additive

What are the hazard statements for Methyl Tert-Butyl Ether (MTBE)?

This substance has 8 hazard statements:

  • H225: Highly Flammable liquid and vapour
  • H303: May be harmful if swallowed
  • H304: May be fatal if swallowed and enters airways
  • H315: Causes skin irritation
  • H320: Causes eye irritation
  • H335: May cause Respiratory Irritation
  • H336: May cause drowsiness or dizziness
  • H351: Suspected of causing cancer

What is the melting point of Methyl Tert-Butyl Ether (MTBE)?

The melting point is -109 C and the boiling point is 55 deg C.