Ethyl bromide

  • Bromoethane
Formula
CH3CH2Br
Structure
Description
Colorless liquid with ether-like odor. Becomes yellow on exposure to air and light, gas above 38 deg c.
Uses
Ethylating agent in organic synthesis, refrigerant.

Registry Numbers and Inventories.
CAS
74-96-4
EC (EINECS/ELINCS)
200-825-8
EC Index Number
602-055-00-1
EC Class
Highly flammable; Carcinogenic Category 3; Harmful
R 20/22 40
RTECS
KH6475000
RTECS class
Tumorigen; Mutagen
UN (DOT)
1891
Merck
13,3807
Beilstein/Gmelin
1209224
Beilstein Reference
4-01-00-00150
Swiss Giftliste 1
G-1166
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C2H5Br
Formula mass
108.97
Melting point, °C
-118
Boiling point, °C
38.4
Vapor pressure, mmHg
467 (25 C)
Vapor density (air=1)
3.76
Saturation Concentration
494000 ppm (49.4%) at 20 C (calculated)
Odor Threshold Odor threshold 890 mg/m3
Critical temperature
231
Critical pressure
61.50
Density
1.460 g/cm3 (20 C)
Solubility in water
9 g/L
Viscosity
0.40 cp (20 C)
Surface tension
24.15 g/s2 @ 20 C
Refractive index
1.4242 (20 C)
Partition coefficient, pKow
1.61
Heat of fusion
5.86 kJ/mol
Heat of vaporization
27.6 kJ/mol
Heat of combustion
-1380 kJ/mol

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a cool, dry place. Store in a tightly closed container. Keep away from water.
Handling
Wash thoroughly after handling. Wash hands before eating. Remove contaminated clothing and wash before reuse. Use only in a well ventilated area. Avoid contact with heat, sparks and flame. Do not get on skin or in eyes. Do not ingest or inhale.
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. Clean up spills immediately, using the appropriate protective equipment. Scoop up with a nonsparking tool, then place into a suitable container for disposal.
Disposal code
2
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong bases, strong oxidizers, magnesium, and water.
Decomposition
Carbon monoxide, carbon dioxide, hydrogen bromide.

Fire.
Flash Point,°C
-20
Autoignition, °C
510
Upper exp. limit, %
11.3
Lower exp. limit, %
6.7
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Extinguishing media: Use carbon dioxide or dry chemical. DO NOT USE WATER!
Fire potential
HIGHLY FLAMMABLE.
Hazards
Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion and poison hazard indoors, outdoors or in sewers. May polymerize explosively when heated or involved in a fire. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.
Combustion products
Readily decomposes into volatile toxic products.
Health
3
 
Flammability
3
 
 
Reactivity
0
 

Health.
Exposure limit(s)
NIOSH REL: See Appendix D OSHA PEL: TWA 200 ppm (890 mg/m3) IDLH 2000 ppm
Carcinogin
G-A3, CP65
Poison_Class
4
Exposure effects
Prolonged or repeated skin contact may cause irritation. Chronic inhalation and ingestion may cause effects similar to those of acute inhalation and ingestion. May cause cancer in humans.
   Ingestion
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May cause respiratory failure. May cause systemic toxic effects on the heart, liver, and kidneys.
   Inhalation
Causes respiratory tract irritation. Irritation may lead to chemical pneumonitis and pulmonary edema. May cause effects similar to those described for ingestion. Causes narcotic effects including headache, dizziness, weakness, unconsciousness, and possible death.
   Skin
Causes skin irritation. Exposure may cause irritation characterized by redness, dryness, and inflammation.
   Eyes
Causes eye irritation.

First aid
 
   Ingestion
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
Immediately 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
1891
Response guide
Hazard class
6.1
Packing Group
II
 
HS Code
2903 30 36
 
Std. Transport #
4921573