Cetyltrimethylammonium bromide

  • Hexadecyltrimethylammonium bromide
  • Cetrimonium bromide
  • CTABr
Formula
C16H33N(CH3)3Br
Structure
Description
White powder.
Uses
Used as a cationic detergent and antiseptic.

Registry Numbers and Inventories.
CAS
57-09-0
EC (EINECS/ELINCS)
200-311-3
EC Class
harmful, irritant, dangerous for the environment
R 22 36/37/38
S 22 26 36
RTECS
BQ7875000
RTECS class
Agricultural Chemical and Pesticide; Drug; Reproductive Effector; Primary Irritant
UN (DOT)
3077
Merck
13,2034
Beilstein/Gmelin
3598189
Beilstein Reference
4-04-00-00819
EPA OPP
69117
Swiss Giftliste 1
G-5209
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C19H42BrN
Formula mass
364.46
Melting point, °C
237 - 243
Vapor density (air=1)
13
Solubility in water
30 g/L
Partition coefficient, pKow
2.26

Hazards and Protection.
Storage
Store in a cool, dry, well-ventilated area away from incompatible substances. Keep containers tightly closed.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. 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
Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Carefully scoop up and place into appropriate disposal container. Provide ventilation.
Disposal code
3
Stability
Stable under normal shipping and handling conditions. However, may decompose if heated.
Incompatibilities
Strong oxidizing agents.
Decomposition
Nitrogen oxides, carbon monoxide, carbon dioxide, hydrogen bromide.

Fire.
Flash Point,°C
244
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Dusts at sufficient concentrations can form explosive mixtures with air. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Extinguishing media: Use water spray, dry chemical, or carbon dioxide. Use agent most appropriate to extinguish fire.

Health.
Poison_Class
3
Exposure effects
Repeated exposure may cause sensitization dermatitis. Reproductive effects have been reported in animals.
   Ingestion
Harmful if swallowed. May cause severe gastrointestinal tract irritation with nausea, vomiting and possible burns.
   Inhalation
Causes respiratory tract irritation. May cause burns to the respiratory tract.
   Skin
May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material. May cause severe irritation and possible burns.
   Eyes
May cause severe eye irritation. May result in corneal injury.

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
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear.
   Skin
Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. Wash clothing before reuse.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
UN number
3077
Response guide
HS Code
2923 90 00