Benzoyl chloride

  • Benzenecarbonyl chloride
Formula
C6H5COCl
Structure
Description
Transparent, colorless, liquid, pungent odor, lachrymator.
Uses
For actylation, introduction of benzoyl group into alcohols, phenols, amines, in organic analysis for making benzoyl derivatives for identification purposes.

Registry Numbers and Inventories.
CAS
98-88-4
EC (EINECS/ELINCS)
202-710-8
EC Index Number
607-012-00-0
EC Class
Corrosive
RTECS
DM6600000
RTECS class
Tumorigen; Mutagen; Human Data
UN (DOT)
1736
Merck
13,1113
Beilstein/Gmelin
471389
Beilstein Reference
4-09-00-00721
Swiss Giftliste 1
G-1245
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C7H5ClO
Formula mass
140.57
Melting point, °C
-0.6
Boiling point, °C
197.2
Vapor pressure, mmHg
0.38 (25 C)
Vapor density (air=1)
1.207
Saturation Concentration
500 ppm (0.05%) at 20 C (calculated)
Density
1.2023 g/cm3
Solubility in water
Insoluble
Surface tension
36.3 g/s2
Refractive index
1.54751 (20 C)
Partition coefficient, pKow
2.21
Heat of vaporization
43.3 kJ/mol
Heat of combustion
-3880 kJ/mol

Hazards and Protection.
Storage
Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.
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. Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Provide ventilation.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Oxidizing agents.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, acrid smoke and fumes.

Fire.
Flash Point,°C
72
Autoignition, °C
600
Upper exp. limit, %
27
Lower exp. limit, %
2.5
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 agent most appropriate to extinguish fire.
Fire potential
Moderate with heat or flame.
Hazards
Substance will react with water (some violently), releasing corrosiveand/or toxic gases.
Combustion products
Highly poisonous phosgene gas may be formed in fires.
Health
3
 
Flammability
2
 
 
Reactivity
2
 
 
Special
W

Health.
Exposure limit(s)
C 0.5 ppm TLV
Carcinogin
I-2A
Poison_Class
2
Exposure effects
Abnormal neuropsychologic function has been reported following hydrochloric acid exposure from a leaking tanker truck.
   Ingestion
May cause irritation of the digestive tract.
   Inhalation
May cause respiratory tract irritation.
   Skin
May cause skin irritation.
   Eyes
May cause 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.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
UN number
1736
Response guide
Hazard class
8
PRTC
T
Packing Group
II
 
USCG CHRIS Code
BZC
 
HS Code
2916 32 90
 
Std. Transport #
4931725