MATERIAL SAFETY DATA SHEET
ExxonMobil Chemical Company
A Division of Exxon Mobil Corporation

DATE PREPARED: APR 27, 2002
MSDS NO.: 00003902
BROMOBUTYL RUBBE ===============================================================================
SECTION 1 CHEMICAL PRODUCT AND COMPANY IDENTIFICATION
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PRODUCT NAME: Bromobutyl Rubber
CHEMICAL NAME:
*

Brominated isobutylene/isoprene copolymer 68441-14-5
*

CHEMICAL FAMILY:
Brominated isobutylene/isoprene copolymer
*

PRODUCT DESCRIPTION:
Offwhite to amber colored rubbery solid polymer.
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See Notes Section for applicable grades.
_______________________________________________________________________________
CONTACT ADDRESS:
xo

ExxonMobil Chemical Company,
P.O. Box 3272, Houston, Texas 77253-3272
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_______________________________________________________________________________
** EMERGENCY TELEPHONE NUMBERS: (24 Hours) **
** CHEMTREC (800) 424-9300 **
** ExxonMobil Chemical Company (800) 726-2015 **
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_______________________________________________________________________________

NON EMERGENCY TELEPHONE NUMBERS : (8am-5pm M-F)
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FOR GENERAL PRODUCT INFORMATION CALL : (281) 870-6000
FOR HEALTH AND MEDICAL INFORMATION CALL : (281) 870-6884
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SECTION 2 COMPOSITION/INFORMATION ON INGREDIENTS
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This product is not hazardous as defined in 29 CFR1910.1200
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SECTION 3 HAZARDS IDENTIFICATION
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POTENTIAL HEALTH EFFECTS
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EYE CONTACT:
Particulates may scratch eye surfaces/cause mechanical irritation.
*

SKIN CONTACT:
No hazard in normal industrial use.
*

Exposure to hot material may cause thermal burns.
INHALATION:
*

Negligible hazard at ambient temperature (-18 to 38 Deg C; 0 to 100 Deg F)
Vapors and/or aerosols which may be formed at elevated temperatures may
be irritating to eyes and respiratory tract.
Vapors and/or aerosols which may be formed at elevated temperatures may
cause systemic effects.
INGESTION:
No hazard in normal industrial use.
SPECIAL PRECAUTIONS
Bromobutyl Rubber contains trace amounts of bromoform,
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 MATERIAL SAFETY DATA SHEET
ExxonMobil Chemical Company
A Division of Exxon Mobil Corporation

DATE PREPARED: APR 27, 2002
MSDS NO.: 00003902
BROMOBUTYL RUBBE ===============================================================================
dibromochloromethylpropane (DBCMP), tribromomethylpropane (TBMP) and other low
molecular weight halogenated hydrocarbons. Trace concentrations of these
compounds on the order of parts per billion, may be emitted into the atmosphere
*

after heating at temperatures exceeding 150 Deg C. during compounding or
*

processing operations.
*

DBCMP and TBMP have structural elements in common with dibromochloropropane
(DBCP), a compound NOT found in Bromobutyl Rubber, but which is a recognized
Ex

carcinogen, reproductive toxin and genotoxin (mutagen). The toxicity of the
Bromobutyl contaminate, DBCMP was compared to DBCP in a 10 week inhalation
exposure. Results showed that, at the maximum tested dose of 50 ppm, DBCMP
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produced no evidence of systemic toxicity or significant histological changes.
Short-term, in vitro tests indicate that DBCMP and TBMP are less genotoxic than
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DBCP, though their mutagenic activities are not insignificant. Therefore,
DBCMP and TBMP may have carcinogenic potential. ExxonMobil recommends a 0.01
ppm Occupational Exposure Limit (OEL) for total DBCMP plus TBMP. ExxonMobil
further recommends observance of the ACGIH TLV of 0.5 ppm for Bromoform.
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Experience has demonstrated that with adequate ventilation and good industrial
hygiene practice, exposures can be controlled to well within the recommended
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OEL.
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SECTION 4 FIRST AID MEASURES
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EYE CONTACT:
This product is an inert solid. If in eye, remove as one
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would any foreign object.
SKIN CONTACT:
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For hot product, immediately immerse in or flush the affected area with
large amounts of cold water to dissipate heat. Cover with clean cotton
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sheeting or gauze and get prompt medical attention. No attempt should be
made to remove material from skin or to remove contaminated clothing, as
*

the damaged flesh can be easily torn.
INHALATION:
*

In case of adverse exposure to vapors and/or aerosols formed at elevated
temperatures, immediately remove the affected victim from exposure.
*

Administer artificial respiration if breathing is stopped. Keep at rest.
Call for prompt medical attention.
INGESTION:
First aid is normally not required.




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 MATERIAL SAFETY DATA SHEET
ExxonMobil Chemical Company
A Division of Exxon Mobil Corporation

DATE PREPARED: APR 27, 2002
MSDS NO.: 00003902
BROMOBUTYL RUBBE ===============================================================================
===============================================================================
SECTION 5 FIRE-FIGHTING MEASURES
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*

FLASH POINT: > 482 Deg F. NOTE: See Notes Section
*

FLAMMABLE LIMITS: NOTE: Not Applicable
AUTOIGNITION TEMP.: NOTE: Not Applicable
*

GENERAL HAZAR Solid material, may burn at or above the flashpoint, and airborne dust may
Ex

explode if ignited .
If thermally decomposed, flammable/toxic gases may be released.
Toxic gases will form upon combustion.
xo

Fire is accompanied by the evolution of a dense black smoke with an
acrid odor. It may cause watery eyes (lachrimation).
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FIRE FIGHTING
Use water spray to cool fire exposed surfaces and to protect personnel.
Isolate "fuel" supply to fire.
Extinguish the fire by cooling with water spray.
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Respiratory and eye protection required for fire fighting personnel.
DECOMPOSITION PRODUCTS UNDER FIRE CONDITIONS
Hydrogen Bromide (HBr) (Toxic); Under Oxygen lean conditions, Carbon
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Monoxide (CO) and irritating smoke may be produced.
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SECTION 6 ACCIDENTAL RELEASE MEASURES
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LAND SPILL
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Recover spilled material and place in suitable containers for recycle or
disposal.
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Consult an expert on disposal of recovered material and ensure
conformity to local disposal regulations.
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WATER SPILL
Recover the spilled material and place in suitable containers for recycle
*

or disposal.
Consult an expert on disposal of recovered material and ensure conformity
*

to local disposal regulations.
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*

SECTION 7 STORAGE AND HANDLING
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ELECTROSTATIC ACCUMULATION HAZARD:
No, but use proper bonding and/or grounding procedure.
STORAGE TEMPERATURE, Deg F:
Ambient
LOADING/UNLOADING TEMPERATURE, Deg F:
Ambient
STORAGE/TRANSPORT PRESSURE, mmHg:
Atmospheric
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 MATERIAL SAFETY DATA SHEET
ExxonMobil Chemical Company
A Division of Exxon Mobil Corporation

DATE PREPARED: APR 27, 2002
MSDS NO.: 00003902
BROMOBUTYL RUBBE ===============================================================================
LOADING/UNLOADING VISCOSITY, cSt:
Not Applicable;
STORAGE AND HANDLING:
*

This material is not a static accumulator, but use proper bonding and/or
*

grounding procedures.
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*

SECTION 8 EXPOSURE CONTROLS/PERSONAL PROTECTION
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EXPOSURE CONTROLS
Local exhaust ventilation of process equipment may be needed to control
particulate exposures to below the recommended exposure limit. See
xo

personal protection recommendations.
PERSONAL PROTECTION
nM

For open systems where contact is likely, wear safety glasses with side
shields.
Where contact may occur with hot materials, wear thermal resistant gloves,
arm protection and a face shield.
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Where overexposure by inhalation may occur and engineering, work practice
or other means of exposure reduction are not adequate, approved
respirators may be necessary.
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WORKPLACE EXPOSURE GUIDELINES
ExxonMobil RECOMMENDS THE FOLLOWING OCCUPATIONAL EXPOSURE LIMITS:
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For Bromobutyl Rubber Process (skin):
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Saturated trihalo-compounds containing at least 2 Bromine atoms, 0.01 ppm
Saturated dibromo compounds, 1.0 ppm
Unsaturated monobromo compounds, 0.1 ppm
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Unsaturated dihalo-compounds containing at least 1 Bromine atom, 0.001 ppm
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SECTION 9 PHYSICAL AND CHEMICAL PROPERTIES
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SPECIFIC GRAVITY at Deg F: 0.93 Solid
VAPOR PRESSURE, mmHg at Deg F: Negligible
*

SOLUBILITY IN WATER, wt. % at Deg F: Insoluble
VISCOSITY OF LIQUID, cSt at Deg F: Not Applicable
*

SP. GRAV. OF VAPOR, at 1 atm (Air=1): Not Applicable
FREEZING/MELTING POINT, Deg F: Not Applicable
*

EVAPORATION RATE, n-Bu Acetate=1: Not Applicable
BOILING POINT, Deg F: Not Applicable
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SECTION 10 STABILITY AND REACTIVITY
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STABILITY:
Stable
CONDITIONS TO AVOID INSTABILITY:
See Notes section

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Continues on page 5
 MATERIAL SAFETY DATA SHEET
ExxonMobil Chemical Company
A Division of Exxon Mobil Corporation

DATE PREPARED: APR 27, 2002
MSDS NO.: 00003902
BROMOBUTYL RUBBE ===============================================================================
HAZARDOUS POLYMERIZATION:
Will not occur
CONDITIONS TO AVOID HAZARDOUS POLYMERIZATION:
*

Not Applicable
*

MATERIALS AND CONDITIONS TO AVOID INCOMPATIBILITY:
See Notes Section
*

HAZARDOUS DECOMPOSITION PRODUCTS:
Hydrogen Bromide (HBr) (Toxic), Brominated compounds and Flammable
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Hydrocarbons
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SECTION 11 TOXICOLOGICAL INFORMATION
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Please refer to Section 3 for available information on potential health
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effects.
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SECTION 12 ECOLOGICAL INFORMATION
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No specific ecological data are available for this product. Please refer to
Section 6 for information regarding accidental releases and Section 15 for
regulatory reporting information.
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SECTION 13 DISPOSAL CONSIDERATIONS
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Please refer to Sections 5, 6 and 15 for disposal and regulatory information.
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SECTION 14 TRANSPORT INFORMATION
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DEPARTMENT OF TRANSPORTATION (DOT):
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This product is not DOT regulated.
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SECTION 15 REGULATORY INFORMATION
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*

CERCLA:
If this product is accidentally spilled, it is not subject to any special
*

reporting under the requirements of the Comprehensive Environmental Response,
Compensation and Liability Act. We recommend you contact local authorities
*

to determine if there may be other local reporting requirements.
SARA TITLE III:
Under the provisions of Title III, Sections 311/312 of the Superfund
Amendments and Reauthorization Act, this product is classified into the
following hazard categories:
Not Hazardous.
This product does not contain Section 313 Reportable Ingredients.



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Continues on page 6
 MATERIAL SAFETY DATA SHEET
ExxonMobil Chemical Company
A Division of Exxon Mobil Corporation

DATE PREPARED: APR 27, 2002
MSDS NO.: 00003902
BROMOBUTYL RUBBE ===============================================================================
===============================================================================
SECTION 16 OTHER INFORMATION
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*

NOTES:
*

1. Bromobutyl will withstand 170 Deg.C for 30 minutes
before decomposition begins with the release of HBr (2
*

wt% maximum). Continued heating at 10 Deg. C/min
results in the depolymerization of the rubber to
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volatile hydrocarbons in the 270 to 300 Deg.C (518 to
572 Deg.F) range.
xo

2. Incorporation of carbon black increases bromobutyl
temperature stability and reduces the quantity of HBr
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release.

3. Applicable grades are Exxon Bromobutyl: 2211, 2222, 2233, 2235, 2244,
2255, 7230, 7255, SB 6222,
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SB 6235, SB 6255, MB 88-2,
Scrap, MDB 86-6
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REVISION SUMMARY:
Since April 1, 2000 this MSDS has been revised in Section(s):
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4
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REFERENCE NUMBER: SUPERSEDES ISSUE DATE:
HDHA-J-00034 April 1, 2000
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This information relates to the specific material designated and may not be
*

valid for such material used in combination with any other materials or in any
process. Such information is to the best of our knowledge and belief,
*

accurate and reliable as of the date compiled. However, no representation,
warranty or guarantee is made as to its accuracy, reliability or completeness.
It is the users responsibility to satisfy himself as to the suitability and
completeness of such information for his own particular use. We do not accept
liability for any loss or damage that may occur from the use of this
information nor do we offer warranty against patent infringement.




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POLY(ISOBUTYLENE-CO-ISOPRENE), BROMINATED