Skip directly to local search Skip directly to A to Z list Skip directly to navigation Skip directly to site content Skip directly to page options
CDC Home

Enter search terms separated by spaces.

Methylcyclohexanol

Synonyms & Trade Names
Hexahydrocresol, Hexahydromethylphenol
CAS No.
25639-42-3
RTECS No.
GW0175000
DOT ID & Guide
2617 129
Formula
CH3C6H10OH
Conversion
1 ppm = 4.67 mg/m3
IDLH
500 ppm
See: 25639423
Exposure Limits
NIOSH REL
: TWA 50 ppm (235 mg/m3)
OSHA PEL
†: TWA 100 ppm (470 mg/m3)
Measurement Methods

NIOSH 1404
See: NMAM or OSHA Methods
Physical Description
Straw-colored liquid with a weak odor like coconut oil.
MW:
114.2
BP:
311-356°F
FRZ:
-58°F
Sol:
4%		 VP(86°F): 2 mmHg
IP:
9.80 eV
Sp.Gr:
0.92
Fl.P:
149-158°F
UEL:
?
LEL:
?
Class IIIA Combustible Liquid: Fl.P. at or above 140°F and below 200°F.
Incompatibilities & Reactivities
Strong oxidizers
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
irritation eyes, skin, upper respiratory system; headache; in animals: narcosis; liver, kidney damage
Target Organs
Eyes, skin, respiratory system, central nervous system, kidneys, liver
Personal Protection/Sanitation
(See protection codes)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet or contaminated
Change: No recommendation
First Aid
(See procedures)
Eye: Irrigate immediately
Skin: Soap wash promptly
Breathing: Respiratory support
Swallow: Medical attention immediately
Respirator Recommendations

NIOSH

Up to 500 ppm:
(APF = 10) Any supplied-air respirator*
(APF = 50) Any self-contained breathing apparatus with a full facepiece

Emergency or planned entry into unknown concentrations or IDLH conditions:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus

Escape:
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister
Any appropriate escape-type, self-contained breathing apparatus

Important additional information about respirator selection

See also: INTRODUCTION   See ICSC CARD: 0292
 

Order NIOSH Publications

Contact Us:
USA.gov: The U.S. Government's Official Web PortalDepartment of Health and Human Services
Centers for Disease Control and Prevention   1600 Clifton Rd. Atlanta, GA 30333, USA
800-CDC-INFO (800-232-4636) TTY: (888) 232-6348 - Contact CDC–INFO