Phenol

  • Carbolic acid
  • Hydroxybenzene
  • Phenic acid
  • Phenol hydrate
  • Phenol, molten (UN 2312)
  • Phenol, solution (UN 2821)
Formula C6H5OH
Structure
Description Colorless, white or pink crystalline solid, or thick liquid, with a distinct, sweet, acrid, tarry odor.
Uses General disinfectant in soln or mixed with slaked lime, etc, for toilets, stables, cesspools, floors, drains, etc, manufacture of colorless or light-colored artificial resins, many medical & indust organic compound & dyes, reagent in chemical analysis.

Registry Numbers and Inventories.
CAS 108-95-2
EC (EINECS/ELINCS) 203-632-7
EC Index Number 604-001-00-2
EC Class Toxic; Corrosive
EC Risk Phrase R 24/25 34
EC Safety Phrase S 28 45
RTECS SJ3325000
RTECS class Agricultural Chemical and Pesticide; Tumorigen; Mutagen; Reproductive Effector; Human Data; Primary Irritant
UN (DOT) 1671, 2312, 2821
Merck 12,7390
Beilstein/Gmelin 969616
Beilstein Reference 4-07-00-01638
RCRA U188
EPA OPP 64001
Swiss Giftliste 1 G-2713
Canada DSL/NDSL DSL
US TSCA Listed
Austrailia AICS Listed
New Zealand Listed
Japan ENCS (MITI) Listed
Korea ECL Listed

Odor Threshold Odor threshold 0.048 ppm
Properties.
Formula C6H6O
Formula mass 94.11
Melting point, °C 40.8
Boiling point, °C 181.7
Vapor pressure, mmHg 0.4 (20 C)
Vapor density (air=1) 3.24
Saturation Concentration 0.047% (20 C)
Evaporization number <0.01 (butyl acetate = 1)
Critical temperature 421
Critical pressure 60.5
Density 1.0722 g/cm3 (20 C)
Solubility in water 94 g/L (25 C)
Viscosity 3.437 cp (50 C)
Surface tension 38.20 g/s2 (50 C)
Refractive index 1.5425 (20 C)
Dipole moment 1.5 (25 C)
Dielectric constant 2.95 (20 C)
pKa/pKb 9.994 (pKa)
Partition coefficient, pKow 1.46
Heat of fusion 11.3 kJ/mol
Heat of vaporization 57.8 kJ/mol
Heat of combustion -3053.5 kJ/mol

Hazards and Protection.
Storage Keep away from heat, sparks, and flame. Keep away from sources of ignition. Keep container closed when not in use. Store in a tightly closed container. Keep from contact with oxidizing materials. Store in a cool, dry, well-ventilated area away from incompatible substances. Refrigerator (approx 4 C). Store protected from moisture. Store protected from light.
WHMIS B3 D1A D2B E
Handling Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use only in a well ventilated area. Minimize dust generation and accumulation. Do not get in eyes, on skin, or on clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid contact with heat, sparks and flame. Do not ingest or inhale. Store protected from light. Discard contaminated shoes. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Protection 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.
Respirators 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.
Small spills/leaks Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Remove all sources of ignition. Use a spark-proof tool. Provide ventilation.
Stability Stable under normal temperatures and pressures.
Incompatibilities Strong oxidizing agents, acids, isocyanates, acetaldehyde, nitrides (e.g. potassium nitride, sodium nitride), calcium hypochlorite, peroxomonosulfuric acid, nitrobenzene, sodium nitrite, aluminum chloride, peroxydisulfuric acid, 1,3-butadiene, boron trifluoride diethyl ether.
Decomposition Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C 81
Autoignition, °C 595
Upper exp. limit, % 9.5
Lower exp. limit, % 1.3
Fire fighting 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. Use water spray to keep fire-exposed containers cool. This material in sufficient quantity and reduced particle size is capable of creating a dust explosion. Containers may explode when heated. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam. Use water spray to cool fire-exposed containers. Use agent most appropriate to extinguish fire.
Fire potential May burn but does not ignite readily.
Hazards Flammable vapors when heated. Runoff from fire control water may give off poisonous gases and cause pollution. Mixtures of 9-10% phenol in air are explosive. Avoid aluminum chloride/nitrobenzene mixture, peroxodisulfuric acid, peroxomonosulfuric acid and strong oxidizing agents. Decomposes slowly on air contact. Avoid contact with strong oxidizing agents.
Combustion products Unburned vapor is toxic Yields flammable vapors when heated, which will form explosive mixtures with air
NFPA Health 4
  Flammability 2  
  Reactivity 0  

Health.
Exposure limit(s) OSHA PEL: TWA 5 ppm (19 mg/m3) skin NIOSH REL: TWA 5 ppm (19 mg/m3) C 15.6 ppm (60 mg/m3) 15-minute skin NIOSH IDLH: 250 ppm
Poison_Class 2
Exposure effects Chronic inhalation and ingestion may cause effects similar to those of acute inhalation and ingestion. May cause liver and kidney damage. May cause reproductive and fetal effects. Effects may be delayed. Laboratory experiments have resulted in mutagenic effects. Repeated skin contact may cause dermatitis with dark pigmentation of the skin. Animal studies have reported the development of tumors.
   Ingestion Harmful if swallowed. May cause severe and permanent damage to the digestive tract. May cause central nervous system depression, characterized by excitement, followed by headache, dizziness, drowsiness, and nausea. Advanced stages may cause collapse, unconsciousness, coma and possible death due to respiratory failure. May cause perforation of the digestive tract. Causes digestive tract burns with immediate pain, swelling of the throat, convulsions, and possible coma.
   Inhalation Causes severe irritation of upper respiratory tract with coughing, burns, breathing difficulty, and possible coma. May be fatal if exposed to high concentrations. Aspiration may lead to pulmonary edema. May also cause pallor, loss of appetite, nausea, vomiting, diarrhea, weakness, darkened urine, headache, sweating, convulsions, cyanosis, unconsciousness, fatigue, pulmonary edema and coma. Inhalation at high concentrations may cause CNS depression and asphixiation.
   Skin Harmful if absorbed through the skin. Direct skin contact results in white, wrinkled discoloration, followed by severe burns. Phenol solutions may be absorbed through the skin ra pidly to cause systemic poisoning and possible death.
   Eyes Contact with liquid or vapor causes severe burns and possible irreversible eye damage. May cause chemical conjunctivitis and corneal damage.

First aid
 
   Ingestion 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.
   Inhalation Get medical aid immediately. Remove from exposure to fresh air immediately. If breathing is difficult, give oxygen. DO NOT use mouth-to-mouth respiration. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.
   Skin Get medical aid immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Discard contaminated clothing in a manner which limits further exposure. SPEEDY ACTION IS CRITICAL! Destroy contaminated shoes.
   Eyes Get medical aid immediately. Do NOT allow victim to rub or keep eyes closed. Extensive irrigation is required (at least 30 minutes).

Transport.
UN number 1671, 2312, 2821
Response guide 153
Hazard class 6.1
Packing Group II  
USCG CHRIS Code PHN  
USCG Compatatibility Group 21 Phenols, Cresols
HS Code 2907 11 00  
Std. Transport # 4921220  
IMO Chemical Code 17
IMO Pollution Category C
IMO Hazard code S/P