- Benzenecarboxylic acid
- Phenyl carboxylic acid
White powder or crystals, faint, pleasant, slightly aromatic odor.
Registry Numbers and Inventories.
R 22 36/37/38
S 22 26 36/37/39
Agricultural Chemical and Pesticide; Mutagen; Human Data; Primary Irritant
Swiss Giftliste 1
Japan ENCS (MITI)
Melting point, °C
121 - 123
Boiling point, °C
Vapor pressure, mmHg
0.00082 (25 C)
Vapor density (air=1)
Very low at normal temperatures.
1.316 g/cm3 (20 C)
Solubility in water
< 1 mg/ml
1.48 cp (125 C)
30 g/s2 @ 130 C
Partition coefficient, pKow
Heat of fusion
Heat of vaporization
Heat of combustion
Hazards and Protection.
Keep away from heat and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Wash thoroughly after handling. Use only in a well ventilated area. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Do not ingest or inhale. Wash clothing before reuse. Keep from contact with moist air and steam.
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.
Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Remove all sources of ignition. Provide ventilation. Cover with soda ash or sodium bicarbonate and place in a closed container for disposal.
Stable under normal temperatures and pressures. Volatile in steam.
Strong oxidizing agents, strong reducing agents, strong bases.
Carbon monoxide, carbon dioxide, phenol, benzene.
Upper exp. limit, %
Lower exp. limit, %
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Water runoff can cause environmental damage. Dike and collect water used to fight fire. Dusts at sufficient concentrations can form explosive mixtures with air. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. This material in sufficient quantity and reduced particle size is capable of creating a dust explosion. Extinguishing media: Use agent most appropriate to extinguish fire. Use flooding quantities of water. Do NOT use straight streams of water. Cool containers with flooding quantities of water until well after fire is out. In case of fire, use carbon dioxide, dry chemical powder or appropriate foam.
Slightly flammable. Flammable at elevated temperatures.
Vapor from molten benzoic acid may form explosive mixture with air. Concentrated dust may form explosive mixture.
Fire may produce irritating, corrosive and/or toxic gases.
Prolonged or repeated skin contact may cause dermatitis. Laboratory experiments have resulted in mutagenic effects.
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May be harmful if swallowed.
May cause allergic respiratory reaction. Causes irritation of the mucous membrane. Inhalation of dust may cause irritation of the nose and throat.
Causes moderate skin irritation. May cause allergic contact dermatitis.
Causes severe eye irritation and possible injury. Inhalation of dust may cause lachrymation.
Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
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 immediately.