Endothall

  • 1,2-Benzenedicarboxylic acid, hexahydro-3,6-endo-oxy
  • 3,6-Endooxohexahydrophthalic acid
  • Endothal
  • 7-Oxabicyclo(2.2.1)heptane-2,3-dicarboxylic acid
  • Tri-endothal
  • Endothall turf herbicide
Formula
C8H10O5
Structure
Description
The monohydrate is in the form of colorless crystals.
Uses
Algicide, herbicide, plant growth regulator.

Registry Numbers and Inventories.
CAS
145-73-3
EC (EINECS/ELINCS)
205-660-5
EC Index Number
607-150-00-1
EC Class
Toxic; Harmful; Irritant
RTECS
RN7875000
RTECS class
Agricultural Chemical and Pesticide; Human Data
Merck
12,3615
Beilstein/Gmelin
85353
Beilstein Reference
5-18-07-00032
RCRA
P088
EPA OPP
38901
Austrailia AICS
Listed
New Zealand
Listed

Properties.
Formula
C8H10O5
Formula mass
186.16
Melting point, °C
169 - 170
Boiling point, °C
448
Vapor pressure, mmHg
3E-9 (25 C)
Density
1.431 g/cm3 (20 C)
Solubility in water
Very soluble
pKa/pKb
3.62 (pKa)
Partition coefficient, pKow
-0.46
Heat of vaporization
77.4 kJ/mol

Hazards and Protection.
Storage
Keep in well ventilated area.
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
When opening container, mixing or applying product, wear protective rubber or PVC gloves and rubber boots. Wear clean clothing daily. Wear a mask or pesticide respirator. General handling procedure: wear rubber gloves for all handling.
Respirators
Organic vapor acid gas canister is used.
Small spills/leaks
Evacuate area and ventilate. Wear protective equipment. If required, use an inert absrobent. Sweep up and place in an appropriate container for disposal. Wash contaminated surfaces.
Stability
Stable.

Fire.
Flash Point,°C
191
Fire fighting
Self-contained breathing apparatus, rubber gloves, hats, suits and boots must be worn. Highly toxic fumes are imminent.
Fire potential
Nonflammable.

Health.
Exposure effects
Seizures and ataxia have been seen in animals.
   Ingestion
Nausea, vomiting, and severe gi inflammation with erosion developed in a 21-year-old man who ingested a 17.5% Solution.
   Skin
Moderate skin irritation was seen in animals. Systemic absorption may occur through damaged skin.

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 and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists.
   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.
USCG CHRIS Code
END