Dimethyl phenol

  • Dimethylhydroxybenzene
  • Dimethylphenol
  • Hydroxydimethylbenzene
  • Phenol, dimethyl
  • Sudol
  • Xylenol
Formula
(CH3)2C6H3OH
Structure
Description
Xylenol is a white crystalline solid.
Uses
Nematicide.

Registry Numbers and Inventories.
CAS
1300-71-6
EC (EINECS/ELINCS)
215-089-3
EC Index Number
604-006-00-X
EC Class
Toxic; Corrosive; Dangerous for the Environment
RTECS
ZE5425000
RTECS class
Human Data
UN (DOT)
2261
Merck
12,10215
Beilstein/Gmelin
NA
EPA OPP
86805
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C8H10O
Formula mass
122.17
Melting point, °C
20-76 (range of the 6 isomers)
Boiling point, °C
203
Critical temperature
449.7
Critical pressure
56.4
Density
1.01 g/cm3 (20 C)
Solubility in water
slightly soluble in water
Viscosity
1.845 cp at 160 deg f
pKa/pKb
10.2 (pKa)
Partition coefficient, pKow
2.23 to 2.61
Heat of vaporization
60.4 kJ/mol
Heat of combustion
-4348 kJ/mol

Hazards and Protection.
Storage
Store at ambient temperatures.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Organic canister mask; face shield; rubber gloves; other protective clothing to prevent contact with skin. In fire conditions, wear goggles and self-contained breathing apparatus. Wear appropriate chemical protective gloves, boots and goggles.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Apply water spray or mist to knock down vapors. Land spill: Dig a pit, pond, lagoon, holding area to contain liquid or solid material. Cover solids with a plastic sheet to prevent dissolving in rain or fire fighting water. Water spill: Use natural barriers or oil spill control booms to limit spill travel. If dissolved, in region of 10 ppm or greater concentration, apply activated carbon at ten times the spilled amount. Remove trapped material with suction hoses. Use mechanical dredges or lifts to remove immobilized masses of pollutants and precipitates.
Stability
Cylinder may explode in heat of fire.
Incompatibilities
Can react with and is especially reactive with iron.

Fire.
Autoignition, °C
598
Fire fighting
Use water in flooding quantities as fog. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Solid streams of water may be ineffective. Use alcohol foam, dry chemical or carbon dioxide.
Fire potential
Combustible but may take some effort to ignite.
Hazards
When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards.
Combustion products
Toxic vapors of unburned material may form in fire.

Health.
Exposure effects
Abnormally low blood pressure, reduced body temperature, rapid breathing, and rapid heart rate may develop with severe toxicity. Initial CNS excitation, including seizures, is commonly followed by CNS depression ranging from lethargy to coma and death. Fetotoxicity and skeletal abnormalities have been reported in animal experiments.
   Ingestion
Phenol is extremely corrosive and may cause oral and esophageal burns and abdominal pain following ingestion.
   Inhalation
Tachypnea is commonly reported; pulmonary edema and bronchospasm may also occur. Stridor has been reported from exposure to high concentrations of phenol. Respiratory arrest occurred 30 minutes post ingestion of 26.7 Grams of phenol in one case.
   Skin
Phenol is corrosive to the skin, but because of anesthetic qualities, it will numb rather than causing a burning pain on contact. Skin becomes red and swollen, then white and opaque. Deep burns result that may become gangrenous.
   Eyes
See Inhalation.

First aid
 
   Ingestion
DO NOT INDUCE VOMITING. Phenols are very toxic poisons AND corrosive and irritating, so that inducing vomiting may make medical problems worse. IMMEDIATELY call a hospital or poison control center and locate activated charcoal, egg whites, or milk in case the medical advisor recommends administering one of them. If advice from a physician is not readily available and the victim is conscious and not convulsing, give the victim a glass of activated charcoal slurry in water or, if this is not available, a glass of milk, or beaten egg whites and IMMEDIATELY transport victim to a hospital. If the victim is convulsing or unconscious, do not give anything by mouth, assure that the victim's airway is open and lay the victim on his/her side with the head lower than the body. DO NOT INDUCE VOMITING. IMMEDIATELY transport the victim to a hospital.
   Inhalation
IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. If symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop, call a physician and be prepared to transport the victim to a hospital. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used.
   Skin
IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. IMMEDIATELY call a hospital or poison control center even if no symptoms (such as redness or irritation) develop. IMMEDIATELY transport the victim to a hospital for treatment after washing the affected areas.
   Eyes
First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.

Transport.
UN number
2261
Response guide
Hazard class
6.1
Packing Group
II
 
USCG CHRIS Code
XYL
 
21 Phenols, Cresols
Std. Transport #
4921787
 
IMO Chemical Code
17
IMO Pollution Category
B
IMO Hazard code
S/P