4-Chloro-m-cresol

  • 4-Chloro-3-methylphenol
  • Chlorocresol
  • Parachloromethacresol
  • p-Chloro-m-cresol
Formula
4-(Cl)-3-(CH3)C6H3OH
Structure
Description
White or slightly pink crystals, odorless when very pure but usually has slight phenolic odor. Aqueous solutions turn yellow on exposure to light and air.
Uses
External germicides, preservative for glues, gums, paints, inks, textile & leather goods.

Registry Numbers and Inventories.
CAS
59-50-7
EC (EINECS/ELINCS)
200-431-6
EC Index Number
604-014-00-3
EC Class
Harmful; Irritant; Sensitising; Dangerous for the Environment
R 21/22 41 43 50
S 26 36/37/39 61
RTECS
GO7100000
RTECS class
Mutagen
UN (DOT)
2669
Merck
13,2152
Beilstein/Gmelin
1237629
Beilstein Reference
4-06-00-02064
RCRA
U039
EPA OPP
64206
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C7H7ClO
Formula mass
142.59
Melting point, °C
63 - 65
Boiling point, °C
235
Vapor pressure, mmHg
0.75 (20 C)
Vapor density (air=1)
4.9
Saturation Concentration
80.28 ppm (0.0080%) at 20 C (calculated)
Odor Threshold Odor threshold 0.1 mg/kg (detection in water)
Density
0.90 g/cm3 (20 C)
Solubility in water
3.8 g/L
Refractive index
1.5403 (73 C)
pKa/pKb
9.63 (pKa)
Partition coefficient, pKow
3.10
Heat of vaporization
49.1 kJ/mol

Hazards and Protection.
Storage
Store in a cool, dry place. Keep container closed when not in use.
Handling
Wash thoroughly after handling. Wash hands before eating. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid contact with skin and eyes. Avoid ingestion and inhalation.
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. Reduce airborne dust and prevent scattering by moistening with water. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation.
Disposal code
3
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Bases, acid chlorides, acid anhydrides, sodium hydroxide, oxidizing agents, steel, brass, copper, and copper alloys.
Decomposition
Hydrogen chloride, chlorine, phosgene, carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
93
Autoignition, °C
590
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.
Fire potential
May burn but does not ignite readily.
Hazards
Containers may explode when heated. Runoff may pollute waterways. Substance may be transported in a molten form.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Exposure effects
May cause liver and kidney damage.
   Ingestion
Causes gastrointestinal irritation with nausea, vomiting and diarrhea. May be harmful if swallowed.
   Inhalation
Causes respiratory tract irritation.
   Skin
Causes skin irritation. Prolonged and/or repeated contact may cause irritation and/or dermatitis. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material.
   Eyes
Causes eye irritation.

First aid
 
   Ingestion
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.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. 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
2669
Response guide
Hazard class
6.1
Packing Group
II
 
USCG CHRIS Code
CLR
 
HS Code
2908 10 00
 
Std. Transport #
4921562