2,3-Xylenol

  • 2,3-Dimethylphenol
  • 1-Hydroxy-2,3-dimethylbenzene
  • o-Xylenol
Formula
C8H10O
Structure
Description
Colorless crystalline solid or brown chunky solid.
Uses
Solvent, chemical intermediate (eg, for sulfur dyes), isomeric mixt is chemical intermediate for gasoline, lubricating oil and elastomer antioxidants.

Registry Numbers and Inventories.
CAS
526-75-0
EC (EINECS/ELINCS)
208-395-3
EC Index Number
604-006-00-X
EC Class
Toxic; Corrosive; Dangerous for the Environment
R 24/25 34 51/53
S 26 36/37/39 45 61
RTECS
ZE5500000
RTECS class
Other
UN (DOT)
2261
Merck
12,10215
Beilstein/Gmelin
1906267
Beilstein Reference
4-06-00-03096
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
122.18
Melting point, °C
75
Boiling point, °C
217
Vapor pressure, mmHg
0.093 (25 C)
Vapor density (air=1)
4.23
Odor Threshold Odor threshold 0.5 mg/L (detection in water)
Critical temperature
443
Critical pressure
42.63
Density
0.965 g/cm3 (20 C)
Solubility in water
Insoluble
Refractive index
1.5172 (74 C)
pKa/pKb
10.42 (pKa)
Partition coefficient, pKow
2.40
Heat of vaporization
47.2 kJ/mol

Hazards and Protection.
Storage
Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Do not store in steel container.
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. Keep container tightly closed. Do not ingest or inhale. Discard contaminated shoes.
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
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Bases, acid anhydrides, acid chlorides, oxidizing agents, steel, brass, copper, copper alloys.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
91
Autoignition, °C
599
Upper exp. limit, %
6.4
Lower exp. limit, %
1.1
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. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam. Use agent most appropriate to extinguish fire.
Fire potential
This material is probably combustible.
Hazards
When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
3
 
Flammability
1
 
 
Reactivity
0
 

Health.
Exposure effects
Effects may be delayed.
   Ingestion
Harmful if swallowed. May cause severe and permanent damage to the digestive tract. Causes gastrointestinal tract burns. May cause perforation of the digestive tract. May cause systemic effects.
   Inhalation
Causes chemical burns to the respiratory tract. Aspiration may lead to pulmonary edema. May cause systemic effects.
   Skin
Harmful if absorbed through the skin. Causes skin burns. May cause skin rash (in milder cases), and cold and clammy skin with cyanosis or pale color.
   Eyes
Causes eye burns. 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. 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
2261
Response guide
Hazard class
6.1
Packing Group
II
 
20. Alcohols. Glycols