Benzyl bromide

  • alpha-Bromotoluene
  • Bromomethylbenzene
Formula
C6H5CH2Br
Structure
Description
A colorless liquid with an agreeable odor. A lachrymator.
Uses
Chemical intermediate for foaming and frothing agents & other, misc organic chemicals.

Registry Numbers and Inventories.
CAS
100-39-0
EC (EINECS/ELINCS)
202-847-3
EC Index Number
602-057-00-2
EC Class
Irritant
R 36/37/38
RTECS
XS7965000
RTECS class
Mutagen
UN (DOT)
1737
Merck
13,1130
Beilstein/Gmelin
385801
Beilstein Reference
4-05-00-00828
Swiss Giftliste 1
G-1251
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C7H7Br
Formula mass
171.05
Melting point, °C
-4
Boiling point, °C
199
Vapor pressure, mmHg
0.25 (17 C)
Vapor density (air=1)
5.8
Density
1.438 g/cm3 (20 C)
Solubility in water
Reacts
Surface tension
32.3 g/s2
Refractive index
1.5752 (20 C)
Partition coefficient, pKow
2.92
Heat of fusion
14.9 kJ/mol
Heat of vaporization
41.7 kJ/mol
Heat of combustion
-2127 kJ/mol

Hazards and Protection.
Storage
Keep away from sources of ignition. Store in a cool, dry place. Do not store in direct sunlight. Store in a tightly closed container. Dark room. Do not store in metal containers.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Do not get in eyes, on skin, or on clothing. Take precautionary measures against static discharges. Do not ingest or inhale. Use only in a chemical fume hood.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container.
Disposal code
2
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Bases, amines, oxidizing agents, alcohols, steel.
Decomposition
Carbon monoxide, carbon dioxide, hydrogen bromide.

Fire.
Flash Point,°C
87
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Will burn if involved in a fire. Combustible Liquid. Extinguishing media: Use foam, dry chemical, or carbon dioxide. DO NOT USE WATER!
Fire potential
Combustible material: may burn but does not ignite readily.
Hazards
Substance will react with water (some violently) releasing flammable, toxic or corrosive gases and runoff. When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapors may travel to source of ignition and flash back. Contact with metals may evolve flammable hydrogen gas.
Combustion products
Irritating hydrogen bromide gas may be formed.
Health
2
 
Flammability
2
 
 
Reactivity
0
 

Health.
Poison_Class
1
Exposure effects
   Ingestion
May cause severe gastrointestinal tract irritation with nausea, vomiting and possible burns. The toxicological properties of this substance have not been fully investigated. May cause central nervous system depression.
   Inhalation
May cause respiratory tract irritation. Exposure produces central nervous system depression. Inhalation may be fatal as a result of spasm, inflammation, edema of the larynx and bronchi, chemical pneumonitis and pulmonary edema.
   Skin
Causes skin irritation. Causes redness and pain.
   Eyes
Causes eye irritation. May cause eye burns. Lachrymator. Causes redness and pain.

First aid
 
   Ingestion
Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   Skin
Get medical aid immediately. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number
1737
Response guide
Hazard class
6.1
Packing Group
II
 
USCG CHRIS Code
BBR
 
HS Code
2903 69 90
 
Std. Transport #
4921295