September 2010
NIOSH Publication Number 2010-168c

4-Methoxyphenol

Synonyms & Trade Names
Hydroquinone monomethyl ether, p-Hydroxyanisole, Mequinol, p-Methoxyphenol, Monomethyl ether hydroquinone
CAS No.
150-76-5
RTECS No.
SL7700000
DOT ID & Guide
Formula
CH3OC6H4OH
Conversion
IDLH
N.D.
See: IDLH INDEX
Exposure Limits
NIOSH REL
: TWA 5 mg/m3
OSHA PEL
†: none
Measurement Methods

None available
Physical Description
Colorless to white, waxy solid with an odor of caramel & phenol.
MW:
124.2
BP:
469°F		 MLT: 135°F Sol(77°F): 4%
VP:
<0.01 mmHg
IP:
7.50 eV
Sp.Gr:
1.55		 Fl.P(oc): 270°F
UEL:
?
LEL:
?
Combustible Solid; under certain conditions, a dust cloud can probably explode if ignited by a spark or flame.
Incompatibilities & Reactivities
Strong oxidizers, strong bases, acid chlorides, acid anhydrides
Exposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms
irritation eyes, skin, nose, throat, upper respiratory system; eye, skin burns; central nervous system depression
Target Organs
Eyes, skin, respiratory system, central nervous system
Personal Protection/Sanitation
(See protection codes)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet or contaminated
Change: Daily
Provide: Eyewash, Quick drench
First Aid
(See procedures)
Eye: Irrigate immediately
Skin: Soap flush immediately
Breathing: Respiratory support
Swallow: Medical attention immediately
Respirator Recommendations

Not available.

Important additional information about respirator selection

See also: INTRODUCTION   See ICSC CARD: 1097