2,4-Xylenol

  • 2,4-Dimethylphenol
  • m-Xylenol
Formula
C8H10O
Structure
Description
Colorless crystals or clear, dark amber liquid.
Uses
Manufacture of pharmaceuticals, plastics, insecticides, fungicides, rubber chem, wetting agents, dyestuffs.

Registry Numbers and Inventories.
CAS
105-67-9
EC (EINECS/ELINCS)
203-321-6
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
ZE5600000
RTECS class
Agricultural Chemical and Pesticide; Tumorigen; Drug
UN (DOT)
2261
Merck
12,10215
Beilstein/Gmelin
636244
Beilstein Reference
4-06-00-03126
RCRA
U101
EPA OPP
86804
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
25
Boiling point, °C
210.9
Vapor pressure, mmHg
0.1
Odor Threshold Odor threshold 0.001 mg/m3
Critical temperature
433
Critical pressure
62.91
Density
1.0362 g/cm3 (0 C)
Solubility in water
5 g/L
Surface tension
31.23 g/s2 (40 C)
Refractive index
1.542 (14 C)
pKa/pKb
10.60 (pKa)
Partition coefficient, pKow
2.30
Heat of vaporization
64.96 kj/mole

Hazards and Protection.
Storage
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Do not store in metal containers.
Handling
Wash thoroughly after handling. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Keep away from strong bases and metals.
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
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Vacuum or sweep up material and place into a suitable disposal container. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation.
Disposal code
9
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Bases - acid chlorides - acid anhydrides - oxidizing agents - corrodes steel - brass - copper - copper alloys.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
80-95
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. Material will burn in a fire. Use water spray to keep fire-exposed containers cool. May polymerize explosively when involved in a fire. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. Extinguishing media: Do NOT get water inside containers. For small fires, use dry chemical, carbon dioxide, or water spray. For large fires, use dry chemical, carbon dioxide, alcohol-resistant foam, or water spray. Cool containers with flooding quantities of water until well after fire is out.
Fire potential
This chemical 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
2
 
Flammability
1
 
 
Reactivity
0
 

Health.
Exposure effects
Chronic ingestion may cause effects similar to those of acute ingestion. May cause kidney damage.
   Ingestion
May cause irritation of the digestive tract. May cause kidney damage. A case of fatal xylenol ingestion by a long stay mental hospital patient is described. Clinical course was similar to that observed in other phenolic poisonings with active bowel sounds, nausea, vomiting, severe metabolic acidosis, hypotension, and cardiac and renal failure.
   Inhalation
May cause respiratory tract irritation.
   Skin
Causes skin irritation. May be harmful if absorbed through the skin.
   Eyes
Causes eye irritation.

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
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear. 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 flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number
2261
Response guide
Hazard class
6.1
Packing Group
II
 
USCG CHRIS Code
DMI
 
HS Code
2907 14 00