NIOSH Pocket Guide to Chemical Hazards

Hexylene glycol

CAS 107-41-5


RTECS SA0810000
Synonyms & Trade Names
2,4-Dihydroxy-2-methylpentane; 2-Methyl-2,4-pentanediol; 4-Methyl-2,4-pentanediol; 2-Methylpentane-2,4-diol
DOT ID & Guide


NIOSH REL: C 25 ppm (125 mg/m3)
OSHA PEL†: none
IDLH N.D. See: IDLH INDEX Conversion 1 ppm = 4.83 mg/m3
Physical Description
Colorless liquid with a mild, sweetish odor.
MW: 118.2
BP: 388°F
FRZ: -58°F (Sets to glass)
Sol: Miscible
VP: 0.05 mmHg
IP: ?

Sp.Gr: 0.92
Fl.P: 209°F
UEL(est): 7.4%
LEL(calc): 1.3%

Class IIIB Combustible Liquid: Fl.P. at or above 200°F.
Incompatibilities & Reactivities
Strong oxidizers, strong acids [Note: Hygroscopic (i.e., absorbs moisture from the air).]
Measurement Methods
See: NMAM or OSHA Methods
Personal Protection & Sanitation (See protection)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet or contaminated
Change: No recommendation
Provide: Eyewash
First Aid (See procedures)
Eye: Irrigate immediately
Skin: Water wash immediately
Breathing: Respiratory support
Swallow: Medical attention immediately
Important additional information about respirator selection
Respirator Recommendations Not available.
Exposure Routes inhalation, ingestion, skin and/or eye contact
Symptoms Irritation eyes, skin, respiratory system; headache, dizziness, nausea, incoordination, central nervous system depression; dermatitis, skin sensitization
Target Organs Eyes, skin, respiratory system, central nervous system
See also: INTRODUCTION   See ICSC CARD: 0660