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Chemical Datasheet
CRESOLS |
|
Chemical Identifiers
CAS Number |
UN/NA Number |
DOT Hazard Label |
USCG CHRIS Code |
- 1319-77-3 (mixed isomers)
- 108-39-4 (m-cresol)
- 95-48-7 (o-cresol)
- 106-44-5 (p-cresol)
|
- 2076
(liquid)
- 3455
(solid)
|
|
|
NIOSH Pocket Guide |
International Chem Safety Card |
o-Cresol
|
- m-CRESOL
- o-CRESOL
- p-CRESOL
|
NFPA 704
General Description
Colorless to yellow liquids with a tarry odor. Flash point 178°F. Insoluble in water. Density 8.7 lb / gal. Poisonous by ingestion and skin absorption and corrosive to skin.
Hazards
Reactivity Alerts
none
Air & Water Reactions
Insoluble in water.
Fire Hazard
Combustible. POISONOUS GASES MAY BE PRODUCED IN FIRE. Flammable toxic vapors given off in a fire. Sealed closed containers can build up pressure if exposed to heat. (USCG, 1999)
Health Hazard
LIQUID: Will burn skin and eyes. Harmful if swallowed. (USCG, 1999)
Reactivity Profile
Mixing CRESOL in equal molar portions with any of the following substances in a closed container caused the temperature and pressure to increase: chlorosulfonic acid, nitric acid, oleum, [NFPA 1991].
Belongs to the Following Reactive Group(s)
Potentially Incompatible Absorbents
No information available.
Response Recommendations
Isolation and Evacuation
Excerpt from 153
[Substances - Toxic and/or Corrosive (Combustible)]:
IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.
SPILL: Increase the immediate precautionary measure distance, in the downwind direction, as necessary.
FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2020)
Firefighting
Excerpt from 153
[Substances - Toxic and/or Corrosive (Combustible)]:
SMALL FIRE: Dry chemical, CO2 or water spray.
LARGE FIRE: Dry chemical, CO2, alcohol-resistant foam or water spray. If it can be done safely, move undamaged containers away from the area around the fire. Dike runoff from fire control for later disposal.
FIRE INVOLVING TANKS OR CAR/TRAILER LOADS: Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles. Do not get water inside containers. Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks engulfed in fire. (ERG, 2020)
Non-Fire Response
Excerpt from 153
[Substances - Toxic and/or Corrosive (Combustible)]:
ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Prevent entry into waterways, sewers, basements or confined areas. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS. (ERG, 2020)
Protective Clothing
Wear goggles and self-contained breathing apparatus. (USCG, 1999)
DuPont Tychem® Suit Fabrics
Normalized Breakthrough Times (in Minutes)
Chemical |
CAS Number |
State |
QS |
QC |
SL |
C3 |
TF |
TP |
RC |
TK |
RF |
Cresols, mixed isomers |
1319-77-3 |
Liquid |
|
71 |
100 |
|
>480 |
|
>480 |
>480 |
>480 |
Cresylic acid |
1319-77-3 |
Liquid |
|
71 |
100 |
|
>480 |
|
>480 |
>480 |
>480 |
Methyl phenols |
1319-77-3 |
Liquid |
|
71 |
100 |
|
>480 |
|
>480 |
>480 |
>480 |
Cresol o- |
95-48-7 |
Liquid |
|
13 |
>480 |
198 |
179 |
179 |
>480 |
|
|
Hydroxy toluene, o- |
95-48-7 |
Liquid |
|
13 |
>480 |
198 |
179 |
179 |
>480 |
|
|
Special Warning from DuPont: Tychem® and Tyvek® fabrics should not be
used around heat, flames, sparks or in potentially flammable or
explosive environments. Only...
(DuPont, 2023)
First Aid
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.
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. If symptoms such as redness or irritation develop, IMMEDIATELY call a physician and be prepared to transport the victim to a hospital for treatment.
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; if not available, use a level of protection greater than or equal to that advised under Protective Clothing.
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. (NTP, 1992)
Physical Properties
Flash Point:
178°F
; 175-185°F (oc)
(USCG, 1999)
Lower Explosive Limit (LEL):
1.4 %
For ortho; 1.1 meta or para.
(USCG, 1999)
Upper Explosive Limit (UEL): data unavailable
Autoignition Temperature:
1038 to 1110°F
(USCG, 1999)
Melting Point: data unavailable
Vapor Pressure:
0.88 mmHg
at 80°F
(USCG, 1999)
Vapor Density (Relative to Air):
3.72
(NTP, 1992)
- Heavier than air; will sink
Specific Gravity:
1.03 to 1.07
at 68°F
(USCG, 1999)
Boiling Point:
greater than 350°F
at 760 mmHg
(USCG, 1999)
Molecular Weight: data unavailable
Water Solubility:
less than 1 mg/mL
at 68°F
(NTP, 1992)
Ionization Energy/Potential:
8.93 eV
[From NPG: o-Cresol]
(NIOSH, 2023)
IDLH:
250 ppm
[From NPG: o-Cresol]
(NIOSH, 2023)
AEGLs (Acute Exposure Guideline Levels)
No AEGL information available.
ERPGs (Emergency Response Planning Guidelines)
No ERPG information available.
PACs (Protective Action Criteria)
Chemical |
PAC-1 |
PAC-2 |
PAC-3 |
|
Cresols, all isomers; (includes 95-48-7,108-39-4,106-44-5) (1319-77-3)
|
14 ppm |
25 ppm |
250 ppm |
LEL = 11000 ppm |
(DOE, 2018)
Regulatory Information
EPA Consolidated List of Lists
Regulatory Name |
CAS Number/ 313 Category Code |
EPCRA 302 EHS TPQ |
EPCRA 304 EHS RQ |
CERCLA RQ |
EPCRA 313 TRI |
RCRA Code |
CAA 112(r) RMP TQ |
Cresol (mixed isomers) |
1319-77-3 |
|
|
100 pounds |
313 |
U052 |
|
m-Cresol |
108-39-4 |
|
|
100 pounds |
313 |
U052 |
|
o-Cresol |
95-48-7 |
1000/10000 pounds |
100 pounds |
100 pounds |
313 |
U052 |
|
p-Cresol |
106-44-5 |
|
|
100 pounds |
313 |
U052 |
|
(EPA List of Lists, 2022)
CISA Chemical Facility Anti-Terrorism Standards (CFATS)
No regulatory information available.
OSHA Process Safety Management (PSM) Standard List
No regulatory information available.
Alternate Chemical Names
- AR-TOLUENOL
- BACILLOL
- CRESOL
- CRESOL (META)
- CRESOL (MIXED ISOMERS)
- CRESOL (ORTHO)
- CRESOL (PARA)
- CRESOL,-O
- 2-CRESOL
- 3-CRESOL
- 4-CRESOL
- CRESOLS
- CRESYLIC ACID
- CRESYLIC ACIDS
- 1-HYDROXY-2-METHYLBENZENE
- 1-HYDROXY-3-METHYLBENZENE
- 1-HYDROXY-4-METHYLBENZENE
- HYDROXYTOLUENE
- 2-HYDROXYTOLUENE
- 3-HYDROXYTOLUENE
- 4-HYDROXYTOLUENE
- HYDROXYTOLUENES
- M-CRESOL
- M-CRESOLE
- M-CRESYLIC ACID
- M-HYDROXYTOLUENE
- M-KRESOL
- M-METHYLPHENOL
- M-OXYTOLUENE
- M-TOLUOL
- META-CRESOL
- 2-METHYL PHENOL
- 3-METHYL PHENOL
- 4-METHYL PHENOL
- 1-METHYL-2-HYDROXYBENZENE
- 1-METHYL-4-HYDROXYBENZENE
- METHYLPHENOIS
- METHYLPHENOL
- 2-METHYLPHENOL
- 3-METHYLPHENOL
- 4-METHYLPHENOL
- O-CRESOL
- O-CRESYLIC ACID
- O-HYDROXYTOLUENE
- O-METHYLPHENOL
- O-METHYLPHENYLOL
- O-OXYTOLUENE
- O-TOLUOL
- ORTHO-CRESOL
- ORTHOCRESOL
- OXYTOLUENES
- P-CRESOL
- P-CRESYLIC ACID
- P-HYDROXYTOLUENE
- P-KRESOL
- P-METHYLHYDROXYBENZENE
- P-METHYLPHENOL
- P-OXYTOLUENE
- P-TOLUOL
- P-TOLYL ALCOHOL
- PARA-CRESOL
- PARAMETHYL PHENOL
- PHENOL, 2-METHYL-
- TAR ACIDS
- TEKRESOL
- TRICRESOL