Dimethyl tetrachloroterephthalate

  • 1,4-Benzenedicarboxylic acid, 2,3,5,6-tetrachloro-dimethyl ester
  • Dimethyl 2,3,5,6-tetrachlorobenzene-1,4-dicarboxylate
  • Dimethyl 2,3,5,6-Tetrachloroterephthalate
  • Terephthalic acid, tetrachloro-dimethyl ester
  • Tetrachloroterephthalic acid dimethyl ester
  • 2,3,5,6-Tetrachloroterephthalic acid dimethyl ester
Formula
C10H6Cl4O4
Structure
Description
Colorless, crystalline solid.
Uses
It is presently approved for use on turf, ornamentals, strawberries, and agronomic crops including cotton, soybeans, and field beans. It is effective against smooth & hairy crabgrass, witchgrass, green & yellow foxtails, fall panicum & other annual grasses. It is also useful against certain broad-leaved weeds such as carpet weed purslane & common chickweed. It is tolerated by many crop plants.

Registry Numbers and Inventories.
CAS
1861-32-1
EC (EINECS/ELINCS)
217-464-7
S 22 24/25
RTECS
WZ1500000
RTECS class
Agricultural Chemical and Pesticide; Reproductive Effector
Merck
12,2896
Beilstein/Gmelin
1888840
Beilstein Reference
3-09-00-04257
EPA OPP
78701
Swiss Giftliste 1
G-6483
Austrailia AICS
Listed
New Zealand
Listed

Properties.
Formula
C10H6Cl4O4
Formula mass
331.97
Melting point, °C
159
Boiling point, °C
422
Vapor pressure, mmHg
2.5E-7 (25 C)
Solubility in water
Insoluble.
Partition coefficient, pKow
3.77
Heat of vaporization
67.6 kJ/mol

Hazards and Protection.
Storage
Keep closed in a cool, dry place. Store only with compatible chemicals.
Handling
For laboratory use only. Do not wear contact lenses. Use in a chemical hood with protective equipment.
Protection
Chemical splash goggles in compliance with OSHA regulations are advised; however, OSHA regulations also permit other type safety glasses. Whre chemical resistant gloves. To prevent repeated or prolonged skin contact, wear impervious clothing and boots.
Respirators
OSHA/MSHA approved respirator.
Small spills/leaks
Evacuate and ventilate area. Wear appropriate protective equipment. Sweep up and place in an appropriate waste container. Wash contaminaed surfaces to remove residue.
Stability
Stable in the pure state stable to UV irradiation.
Incompatibilities
Strong oxidizing agents.
Decomposition
No data.

Fire.
Flash Point,°C
175
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. Use agent most appropriate to extinguish fire.

Health.
Poison_Class
5
Exposure effects
   Ingestion
Nausea, vomiting and diarrhea are possible if ingested.
   Inhalation
Cough, tachypnea, and wheezing are common after inhalation.
   Skin
Redness, swelling and pain may occur.
   Eyes
Irritation.

First aid
 
   Ingestion
Seek medical attention. If individual is drowsy or unconscious, do not give anything by mouth; place individual on the left side with the head down. Contact a physician, medical facility, or poison control center for advice about whether to induce vomiting. If possible, do not leave individual unattended.
   Inhalation
If symptoms develop, move individual away from exposure and into fresh air. If symptoms persist, seek medical attention. If breathing is difficult, administer oxygen. Keep person warm and quiet; seek immediate medical attention.
   Skin
Remove contaminated clothing. Wash exposed area with soap and water. If symptoms persist, seek medical attention. Launder clothing before reuse.
   Eyes
If symptoms develop, immediately move individual away from exposure and into fresh air. Flush eyes gently with water for at least 15 minutes while holding eyelids apart; seek immediate medical attention.

Transport.