3-Bromopropyne

  • Propargyl bromide
  • 3-Bromo-1-Propyne
Formula
C3H3Br
Structure
Description
A colorless to light yellow liquid substance with a sharp odor.
Uses
Ingredient of fumigants.

Registry Numbers and Inventories.
CAS
106-96-7
EC (EINECS/ELINCS)
203-447-1
R 11 25 34 37
S 16 26 36/37/39 45
RTECS
UK4375000
RTECS class
Agricultural Chemical and Pesticide
UN (DOT)
2345
Beilstein/Gmelin
605309
Beilstein Reference
4-01-00-00964
EPA OPP
68701
Swiss Giftliste 1
G-9659
Canada DSL/NDSL
NDSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C3H3Br
Formula mass
118.97
Melting point, °C
-43
Boiling point, °C
90
Vapor density (air=1)
4.1
Critical temperature
308
Critical pressure
59.4
Density
1.552 g/cm3
Solubility in water
Insoluble
Refractive index
1.4938
Partition coefficient, pKow
1.29

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Keep container closed when not in use. Flammables-area. Refrigerator (approx 4 C). Store protected from moisture. Store away from heat, oxidizing agents, acids, alkalies, and sunlight.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Attempt to stop leak if without undue personnel hazard. Use water spray to knock-down vapors.
Stability
When propargyl bromide is diluted with 20-30% by weight of toluene, its explosive properties are practically eliminated.
Incompatibilities
Peroxides, caustics, copper, copper alloys, mercury, silver, trichloronitromethane, dinitrogen tetraoxide, nitric acid, bromine trifluoride, uranium hexafluoride, sulfur dichloride, dichlorohydrantoin, sulfuric acid + nitric acid, silver perchlorate, iron chlorides, sulfur dioxide.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, hydrogen bromide.

Fire.
Flash Point,°C
18
Autoignition, °C
328
Fire fighting
Wear self-contained breathing apparatus and full protective clothing. Move container from fire area if you can do it without risk. Do not get water inside container. Cool containers that are exposed to flames with water from the side until well after fire is out. Withdraw immediately in case of rising sound from venting safety device or any discoloration of tank due to fire. Isolate for 1/2 mile in all directions if tank car or truck is involved in fire.To extinguish fire use water, foam, carbon dioxide, or dry chemical.
Fire potential
HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.
Hazards
This material detonates at 428F or more; ignites by impact. Emits highly toxic fumes of bromides when heated to decomposition. Reacts vigorously with oxidizing materials. Becomes shock-sensitive when mixed with chloropicrin. Unstable, avoid heat, flame, shock, and other chemicals
Combustion products
Releases hydrogen bromide fumes when heated.
Health
3
 
Flammability
3
 
 
Reactivity
4
 

Health.
Poison_Class
3
Exposure effects
Alcoholic beverage consumption may enhance the toxic effects of this substance.
   Ingestion
Esophageal or gi tract irritation or burns may occur.
   Inhalation
Respiratory tract irritation with potential chemical pneumonitis or noncardiogenic pulmonary edema may occur.
   Skin
Dermal irritation or burns may be seen.
   Eyes
Eye, nose, and throat irritation may be seen.

First aid
 
   Ingestion
Do not induce vomiting - following ingestion and/or prior to gastric evacuation, immediately dilute with 4 to 8 ounces (120 to 240 ml) of milk or water (not to exceed 15 ml/kg in a child).
   Inhalation
Move patient to fresh air. Monitor for respiratory distress. If cough or difficulty breathing develops, evaluate for respiratory tract irritation, bronchitis, or pneumonitis. Administer oxygen and assist ventilation as required. Treat bronchospasm with beta2 agonist and corticosteroid aerosols.
   Skin
Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists. Treat dermal irritation or burns with standard topical therapy. Patients developing dermal hypersensitivity reactions may require treatment with systemic or topical corticosteroids or antihistamines.
   Eyes
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.

Transport.
UN number
2345
Response guide
Hazard class
3
Packing Group
II
 
USCG CHRIS Code
BMP
 
Std. Transport #
4910517