White to yellow, crystalline powder, odorless when pure, may have a slight phenolic odor due to impurities.
It is registered in the USA as a herbicide for control of broadleaf plants & as a plant-growth regulator.
Registry Numbers and Inventories.
EC Index Number
Harmful; Irritant; Sensitising; Dangerous for the Environment
R 22 37 41 43 52/53
S 24/25 26 36/37/39 46 61
Agricultural Chemical and Pesticide; Tumorigen; Mutagen; Reproductive Effector; Human Data; Primary Irritant
Swiss Giftliste 1
Japan ENCS (MITI)
Melting point, °C
137 - 139
Boiling point, °C
Vapor pressure, mmHg
2E-5 (25 C)
Vapor density (air=1)
526 ppm (0.05%) at 160 C (calculated)
Odor Threshold Odor threshold 3.13 mg/kg
1.563 g/cm3 (20 C)
Solubility in water
66.5 g/s2 at 25 C and ph 1.4
Partition coefficient, pKow
Heat of fusion
Heat of vaporization
Heat of combustion
Hazards and Protection.
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Use with adequate ventilation. Wash clothing before reuse.
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Clean up spills immediately, using the appropriate protective equipment. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.
Stable at room temperature in closed containers under normal storage and handling conditions.
Strong oxidizing agents, strong acids, strong bases.
Hydrogen chloride, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.
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. Combustible material; may burn but does not ignite readily. To extinguish fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
Containers may explode when heated.
Toxic and irritating hydrogen chloride or phosgene gases may form.
TLV: ppm; 10 mg/m3 (as TWA) (ACGIH 1993-1994). OSHA PEL: TWA 10 mg/m3 NIOSH REL: TWA 10 mg/m3 NIOSH IDLH: 100 mg/m3
May cause liver and kidney damage. Effects may be delayed.
Harmful if swallowed. May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May cause liver and kidney damage. Human fatalities have been reported from acute poisoning.
Causes respiratory tract irritation. May cause liver and kidney damage. Can produce delayed pulmonary edema.
Causes skin irritation. May be harmful if absorbed through the skin.
Causes eye irritation. May cause chemical conjunctivitis.
Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid. DO NOT use mouth-to-mouth respiration.
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
USCG CHRIS Code
2918 90 90