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).

form :

crystalline

pka:

2.80 and 2.83 at 25 °C (ionic strength <0.01 M, Jafvert et al., 1990)
2.88 (Nelson and Faust, 1969)

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.

Symbol(GHS) 

GHS06,GHS09

Signal word 

Danger

Hazard statements 

H301-H312-H315-H319-H335-H410

Precautionary statements 

P261-P273-P280-P301+P310-P302+P352+P312-P305+P351+P338