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2,4,5-trichlorophenoxyacetic acid (93-76-5)


Standards and Recommendations:

OSHA PEL: TWA 10 mg/m3

ACGIH TLV: TWA 10 mg/m3; Not Classifiable as a Human Carcinogen

DFG MAK: 10 mg/m3

Identification
Name:2,4,5-trichlorophenoxyacetic acid
Synonyms:2,4,5-T; (2,4,5-Trichloor-fenoxy)-azijnzuur; (2,4,5-trichloor-fenoxy)-azijnzuur[qr]; (2,4,5-trichlorophenoxy)-aceticaci; (2,4,5-trichlorophenoxy)ethanoicacid; (2,4,5-Trichlor-phenoxy)-essigsaeure; (2,4,5-trichlor-phenoxy)-essigsaeure[qr]; ,4,5-Trichlorophenoxyacetic acid; 2,4,5-Trichlorophenoxyacetica
CAS:93-76-5
EINECS: 202-273-3
Molecular Formula: C8H5Cl3O3
Molecular Weight: 255.48
InChI: InChI=1/C8H5Cl3O3/c9-4-1-6(11)7(2-5(4)10)14-3-8(12)13/h1-2H,3H2,(H,12,13)
Molecular Structure: (C8H5Cl3O3) 2,4,5-T; (2,4,5-Trichloor-fenoxy)-azijnzuur; (2,4,5-trichloor-fenoxy)-azijnzuur[qr]; (2,4,5-trichlor...
Properties
Transport:UN 2811
Flash Point: 181.4 ºC
Boiling Point: 376.3ºC
Density:1.592
Stability:Stable. Incompatible with strong bases, strong oxidizing agents, alkali metals, amines, alcohols. Reacts with many common metals.
Solubility:Insoluble
Appearance:Colorless to tan, odorless, crystalline solid.
Specification:

 2,4,5-Trichlorophenoxyacetic acid (2,4,5-T) , a synthetic auxin, is a chlorophenoxy acetic acid herbicide used to defoliate broad-leafed plants. It was developed in the late 1940s and was widely used in the agricultural industry until being phased out, starting in the late 1970s due to toxicity concerns. Agent Orange, a defoliant used by the U.S. in the Vietnam War, was equal parts 2,4,5-T and 2,4-D. 2,4,5-Trichlorophenoxyacetic acid is a weak acid. Reacts with organic and inorganic bases to form water-soluble salts and with alcohols to form esters. Incompatible with strong oxidizing agents and strong bases. Can corrode metals, especially if moist. May harm painted surfaces .

Report:

IARC Cancer Review: Group 2B IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 7 ,1987,p. 156.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Animal Inadequate Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 15 ,1977,p. 273.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Human Inadequate

 

1.    

Evidence ; Human Limited Evidence . Reported in EPA TSCA Inventory. EPA Genetic Toxicology Program.

    IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 15 ,1977,p. 273.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 41 ,1986,p. 357.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210)

 
 
 
 
 
Packinggroup: III
Flash Point: 181.4 ºC
Storage Temperature: 0-6°C
Color: off-white to yellow
Usage:Herbicide for industrial sites, lumber yards & vacant lots, rangeland & rice, lawns & turf (incl its esters & salts), aquatic use (incl its esters & salts), home use (former use for granules), recreation areas (former use for granules), food crops for humans (former use).
Safety Data
Hazard Symbols Xn:Harmful N:Dangerousfortheenvironment