Chlorobenzilate

  • Benzeneacetic acid, 4-chloro-alpha-(4-chlorophenyl)-alpha-hydroxy-ethyl
  • Ethyl 4-chloro-alpha-(4-chlorophenyl)-alpha-hydroxybenzeneacetate
  • Ethyldichlorobenzilate
  • Ethyl p,p'-dichlorobenzilate
  • Ethyl 4,4'-dichlorobenzilate
Formula
C16H14Cl2O3
Structure
Description
Viscous yellow liquid or pale yellow crystals. Light brown crystalline solid.
Uses
Acaricide.

Registry Numbers and Inventories.
CAS
510-15-6
EC (EINECS/ELINCS)
208-110-2; 99-1-497
EC Index Number
607-159-00-0
EC Class
Harmful; Dangerous for the Environment
RTECS
DD2275000
RTECS class
Agricultural Chemical and Pesticide; Tumorigen; Mutagen; Primary Irritant
UN (DOT)
2762
Merck
12,2174
Beilstein/Gmelin
2755859
Beilstein Reference
4-10-00-01275
RCRA
U038
EPA OPP
28801
Swiss Giftliste 1
G-1394
Canada DSL/NDSL
NDSL
US TSCA
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C16H14Cl2O3
Formula mass
325.19
Melting point, °C
38
Boiling point, °C
452
Vapor pressure, mmHg
6E-9 (25 C)
Density
1.2816 g/cm3 (20 C)
Solubility in water
10 mg/L at 20 C
Refractive index
1.5727 (20 C)
pKa/pKb
11.11 (pKa)
Partition coefficient, pKow
4.74
Heat of vaporization
75.0 kJ/mol

Hazards and Protection.
Storage
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage.
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
If Tyvek-type disposable protective clothing is not worn during handling of this chemical, wear disposable Tyvek-type sleeves taped to your gloves.
Respirators
Wear a NIOSH-approved half face respirator equipped with a combination filter cartridge, i.e. organic vapor/acid gas/HEPA (specific for organic vapors, HCl, acid gas, SO2 and a high efficiency particulate filter).
Small spills/leaks
Should a spill occur while you are handling this chemical, FIRST REMOVE ALL SOURCES OF IGNITION, then you should dampen the solid spill material with 60-70% ethanol and transfer the dampened material to a suitable container. Use absorbent paper dampened with 60-70% ethanol to pick up any remaining material. Seal the absorbent paper, and any of your clothes, which may be contaminated, in a vapor-tight plastic bag for eventual disposal. Solvent wash all contaminated surfaces with 60-70% ethanol followed by washing with a soap and water solution. Do not reenter the contaminated area until the Safety Officer (or other responsible person) has verified that the area has been properly cleaned.
Stability
Shelf life of at least 3 to 5 years when stored in a dry place and minimum storage temperatures (above 32 F) are observed.
Incompatibilities
Incompatible with lime.

Fire.
Flash Point,°C
227
Fire fighting
Fires involving this material can be controlled with a dry chemical, carbon dioxide or Halon extinguisher.
Fire potential
This material is probably combustible.
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.
Combustion products
Fire will produce irritating, corrosive and/or toxic gases.

Health.
Carcinogin
CP65
Poison_Class
4
Exposure effects
CNS excitation, seizures, tremor, ataxia, agitation, nervousness, and amnesia may occur. Kelthane, perthane, methoxychlor, and hexachlorobenzene have little CNS toxicity; in extreme overdose CNS depression may occur. Organochlorine pesticides such as DDT pass through the placenta, with an average level in the newborn blood reaching around a third of that in maternal blood. They can also be found in breast milk. Excessive absorption of kepone (chlordecone) has depressed sperm counts and sperm motility in exposed workers.
   Ingestion
Nausea, vomiting, and diarrhea may follow ingestion.
   Inhalation
Aspiration of insecticide containing petroleum distillate may result in pneumonitis.
   Skin
Extensive contact results in dermal irritation.
   Eyes
See inhalation.

First aid
 
   Ingestion
DO NOT INDUCE VOMITING. If the victim is conscious and not convulsing, give 1 or 2 glasses of water to dilute the chemical and IMMEDIATELY call a hospital or poison control center. Be prepared to transport the victim to a hospital if advised by a physician. If the victim is convulsing or unconscious, do not give anything by mouth, ensure that the victim's airway is open and lay the victim on his/her side with the head lower than the body. DO NOT INDUCE VOMITING. IMMEDIATELY transport the victim to a hospital.
   Inhalation
IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. IMMEDIATELY call a physician and be prepared to transport the victim to a hospital even if no symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used.
   Skin
IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. IMMEDIATELY call a hospital or poison control center even if no symptoms (such as redness or irritation) develop. IMMEDIATELY transport the victim to a hospital for treatment after washing the affected areas.
   Eyes
First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.

Transport.
UN number
2762
Response guide
Hazard class
3
Packing Group
I; II
 
USCG CHRIS Code
EDZ