2,4,5-Trichlorophenoxyacetic acid

Melting point :154-158 °C(lit.)
Boiling point :361.82°C (rough estimate)
Density :1.6048 (rough estimate)
vapor pressure :6.46 at 25 °C (Lewis, 1989)
refractive index :1.4700 (estimate)
Flash point :2 °C
storage temp. :0-6°C
solubility :Soluble in ethanol (548.2 mg/L), ether (243.2 mg/L), heptane (400 mg/L), xylenes (6.8 g/L), methanol (496 g/L), toluene (7.32 g/L) (quoted, Keith and Walters, 1992).
pka :2.80 and 2.83 at 25 °C (ionic strength <0.01 M, Jafvert et al., 1990)
2.88 (Nelson and Faust, 1969) form :crystalline
color :off-white to yellow
Water Solubility :238mg/L(20 ºC)
Merck :13,9111
Henry's Law Constant :4.87 at 25 °C (approximate - calculated from water solubility and vapor pressure)
Exposure limits :NIOSH REL: TWA 10 mg/m3, IDLH 250 mg/m3; OSHA PEL: TWA 10 mg/m3; ACGIH TLV: TWA 10 mg/m3.
Stability :Stable. Incompatible with strong bases, strong oxidizing agents, alkali metals, amines, alcohols. Reacts with many common metals.
CAS DataBase Reference :93-76-5(CAS DataBase Reference)
NIST Chemistry Reference :Acetic acid, 2,4,5-trichlorophenoxy-(93-76-5)
EPA Substance Registry System :2,4,5-T (93-76-5)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H301 Toxic if swalloed Acute toxicity,oral Category 3 Danger P264, P270, P301+P310, P321, P330,P405, P501 H312 Harmful in contact with skin Acute toxicity,dermal Category 4 Warning P280,P302+P352, P312, P322, P363,P501 H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362 H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning H410 Very toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 1 Warning P273, P391, P501
Precautionary statements:	P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P301+P310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.