MATERIAL
AGA GAS, INC. (216) 642-6600 SAFETY
6055 ROCKSIDE WOODS BLVD DATA SHEET
P.O. BOX 94737
CLEVELAND, OH 44101-4737 No. 42
PRODUCT NAME CAS #
74-83-9
Methyl Bromide
DOT I.D. No.:
UN 1062 RQ 1,000 (154)
TRADE NAME AND SYNONYMS
Methyl Bromide; Bromomethane DOT Hazard Class:
Division 2.3
CHEMICAL NAME AND SYNONYMS
Formula
CH3Br
Methyl Bromide; Bromomethane
ISSUE DATES AND REVISIONS Chemical Family:
Alkyl Halide
Revised May 1998
HEALTH HAZARD DATA
TIME WEIGHTED AVERAGE EXPOSURE LIMIT
5 Molar PPM with Skin Notation and a A4 (Not Classifiable as a Human Carcinogen) carcinogen rating
(ACGIH 1997). OSHA 1995 Ceiling limit (Continued on Page 4)
SYMPTOMS OF EXPOSURE
Inhalation: Low concentrations cause dizziness, sleepiness, and headache coupled with occasional
digestive problems.
Acute intoxication causes similar symptoms initially but serious symptoms may be delayed for several hours.
These symptoms include loss of stability, lack of motor corrdination, (Continued on Page 4)
TOXICOLOGICAL PROPERTIES
Its action is on the central nervous system, resulting in all of the symptoms as outlined above. Persistent
problems may include pulmonary edema and kidney damage. Most symptoms disappear after a few days
after a mild exposure; however, numbness of the extremities and visual disturbances may continue for
longer periods.
IARC indicates limited evidence for animals and inadequate evidence for humans as a carcinogen or
potential carcinogen. NTP carcinogenesis studies reported "on test" in 1987. OSHA 1989 does not list methyl
bromide as a carcinogen or potential carcinogen. (Continued on Page 4)
RECOMMENDED FIRST AID TREATMENT
PROMPT MEDICAL ATTENTION IS MANDATORY IN ALL CASES OF OVEREXPOSURE TO METHYL
BROMIDE. RESCUE PERSONNEL SHOULD BE EQUIPPED WITH SELF-CONTAINED BREATHING
APPARATUS AND BE COGNIZANT OF MODEST FIRE HAZARD.
Inhalation: Conscious persons should be assisted to an uncontaminated area and breathe fresh air
supplemented with oxygen. Absolute rest is indicated for a period of at least 48 hours. The physician should
be informed concerning the potential for pulmonary edema and renal problems. Continued treatment should
be symptomatic and supportive. Unconscious persons should be given assisted respiration as well as
oxygen and when breathing is restored, treated as above. Continued intermittent oxygen administration is
also recommended.(Continued on Page 4)
Information contained in this material safety data sheet is offered without charge for use by technically qualified personnel at their discretion and
risk. All statements, technical information and recommendations contained herein are based on tests and data which we believe to be reliable, but
the accuracy or completeness thereof is not guaranteed and no warranty of any kind is made with respect thereto. This information is not intended
as a license to operate under or a recommendation to practice or infringe any patent of this Company or others covering any process, composition
of matter or use.
Since the Company shall have no control of the use of the product described herein, the Company assumes no liability for loss or damage incurred
from the proper or improper use of such product.
METHYL BROMIDE
HAZARDOUS MIXTURES OF OTHER LIQUIDS, SOLIDS, OR GASES
Methyl bromide is flammable in air over a very narrow range. It reacts with aluminum and its alloys forming
aluminum methylated compounds which are flammable spontaneously in air.
PHYSICAL DATA
BOILING POINT LIQUID DENSITY AT BOILING POINT
107.5 lb/ft3 (1722 kg/m3)
40.3癋 (4.6癈)
VAPOR PRESSURE GAS DENSITY AT 70癋. 1 atm
0.251 lb/ft3 (4.02 kg/m3)
@ 70癋 (21.1癈) = 29.3 psia (202 kPa)
SOLUBILITY IN WATER FREEZING POINT
Slightly soluble -135.4癋 (-93癈)
EVAPORATION RATE SPECIFIC GRAVITY (AIR=1)
Unknown @ 70癋 (21.1癈) = 3.35
Colorless, practically odorless gas. At high concentrations has a sweetish, chloroform-like
APPEARANCE AND ODOR
odor
FIRE AND EXPLOSION HAZARD DATA
AUTO IGNITION TEMPERATURE
FLASH POINT (Method used) FLAMMABLE LIMITS % BY VOLUME (See Page 4)
LEL 13.5 UEL 14.5
Undertermined 999癋 (537癈)
ELECTRICAL CLASSIFICATION
EXTINGUISHING MEDIA
Class 1, Group not specified
Water, carbon dioxide, dry chemical
SPECIAL FIRE FIGHTING PROCEDURES
If containers are involved in a fire, safely relocate or keep cool with water spray.
UNUSUAL FIRE AND EXPLOSION HAZARDS
None
REACTIVITY DATA
STABILITY CONDITIONS TO AVOID
Unstable None
X
Stable
INCOMPATIBILITY (Materials to avoid)
Aluminum and its alloys
HAZARDOUS DECOMPOSITION PRODUCTS
Hydrogen bromide, carbonyl bromide and carbon monoxide
HAZARDOUS POLYMERIZATION CONDITIONS TO AVOID
May Occur
None
Will Not Occur X
SPILL OR LEAK PROCEDURES
STEPS TO BE TAKEN IN CASE MATERIAL IS RELEASED OR SPILLED
Evacuate all personnel from affected area. Use appropriate protective equipment. If leak is in user's
equipment, be certain to purge piping with an inert gas prior to attempting repairs. If leak is in container or
container valve, contact your closest supplier location or call the emergency telephone number listed herein.
WASTE DISPOSAL METHOD
Do not attempt to dispose of waste or unused quantities. Return in the shipping container properly labeled,
with any valve outlet plugs or caps secured and valve protection cap ~n place to your suppl~er. For
emergency disposal assistance, contact your closest supplier location or call the emergency telephone
number listed herein.
2
METHYL BROMIDE
SPECIAL PROTECTION INFORMATION
Positive pressure air line with mask or self-contained breathing apparatus should be
RESPIRATORY PROTECTION
(Specify type)
available for emergency use.
VENTILATION LOCAL EXHAUST SPECIAL
N/A
To prevent accumulation above the TWA
Hood with forced ventilation MECHANICAL (Gen.) OTHER
In accordance with electrical codes N/A
PROTECTIVE GLOVES
Teflon?or Kel-F?br>
EYE PROTECTION
Safety goggles or glasses plus transparent face shield
OTHER PROTECTIVE EQUIPMENT
Safety shoes, safety shower, eyowash "fountain"
SPECIAL PRECAUTIONS*
SPECIAL LABELING INFORMATION
DOT Shipping Name: Methyl bromide DOT Hazard Class: Division 2.3
DOT Shipping Label: Toxic Gas I.D. No.: UN 1062 (RQ 1,000/454)
SPECIAL HANDLING RECOMMENDATIONS
Use only in well-ventilated areas. Valve protection caps must remain in place unless container is secured
with valve outlet piped to use point. Do not drag, slide or roll cylinders. Use a suitable hand truck for cylinder
movement. Use a pressure reducing regulator when connecting cylinder to lower pressure (<100 psig)
piping or systems. Do not heat cylinder by any means to increase the discharge rate of product from the
cylinder. Use a check valve or trap in the discharge line to prevent hazardous back flow into the cylinder.
For additional handling recommendations, consult Compressed Gas Association's Pamphlet P-1.
SPECIAL STORAGE RECOMMENDATIONS
Protect cylinders from physical damage. Store in cool, dry, well-ventilated area of noncombustible
construction away from heavily trafficked areas and emergency exits. Do not allow the temperature where
cylinders are stored to exceed 125F (52C). Cylinders should be stored upright and firmly secured to prevent
falling or being knocked over. Full and empty cylinders should be segregated. Use a "first in - first out"
inventory system to prevent full cylinders being stored for excessive periods of time. Post "No Smoking or
Open Flames" signs in the storage or use area. There should be no sources of ignition in the storage or use
area.
For additional storage recommendations, consult Compressed Gas Association's Pamphlet P-1.
SPECIAL PACKAGING RECOMMENDATIONS
The use of zinc, aluminum, and magnesium and their alloys should be avoided. Methyl bromide is not
compatible with most plastics and elastomers. Teflon?and Kel- F?are acceptable.
OTHER RECOMMENDATIONS OR PRECAUTIONS
Earth-ground and bond all lines and equipment associated with the methyl bromide system. Electrical
equipment should be non-sparking or explosion proof. Compressed gas cylinders should not be refilled
except by qualified producers of compressed gases. Shipment of a compressed gas cylinder which has not
been filled by the owner or with his (written) consent is a violation of Federal Law (49CFR). (Continued on
Page 4)
*Various Government Agencies (i.e. Department of Transportation, Occupational Safety and Health Administration, Food and Drug Administration
3
and others) may have specific regulations concerning the transportation, handling, storage or use of this product which will not be reflected in this
data sheet. The customer should review these regulations to ensure that he is in full compliance.
METHYL BROMIDE
HEALTH HAZARD DATA
TIME WEIGHTED AVERAGE EXPOSURE LIMIT: (Continued)
= 20 Molar PPM with a skin designation.
SYMPTOMS OF EXPOSURE: (Continued)
epilepsy, censorial problems, impaired vision and hearing, mental confusion, a depressive syndrome and
hallucinations.
Very serious intoxication results in death following a series of epileptic fits. Pulmonary and kidney damage
have also been observed.
Skin and Eye Contact: Liquid contacting the skin causes burns like 1st and 2nd degree thermal burns. If
splashed in the eyes, symptoms range from conjunctivitis to temporary blindness.
TOXICOLOGICAL PROPERTIES: (Continued)
Persons in ill health or with cardiac, liver, or neurological problems should not be allowed to work with or
handle this product.
RECOMMENDED FIRST AID TREATMENT: (Continued)
Eye Contact: PERSONS WITH POTENTIAL EXPOSURE TO METHYL BROMIDE SHOULD NOT WEAR
CONTACT LENSES.
Flush contaminated eye(s) with copious quantities of water. Part eyelids to assure complete flushing. Continue
for a minimum of 15 minutes.
Skin Contact: Flush affected area with copious quantities of water. Remove affected clothing as rapidly as
possible.
SPECIAL PRECAUTIONS
OTHER RECOMMENDATIONS OR PRECAUTIONS: (Continued)
Always secure cylinders in an upright position before transporting them. NEVER transport cylinders in trunks
of vehicles, enclosed vans, truck cabs or in passenger compartments. Transport cylinders secured in open
flatbed or in open pick-up type vehicles.
Methyl bromide is considerd a toxic chemical and is subject to the reporting requirements of SARA, Title III,
Section 313.
NFPA 704 NO. for methyl bromide = 3 1 0 None
4
|