NIOSH Publication No. 2005-151:

NIOSH Pocket Guide to Chemical Hazards

September 2005

Hexylene glycol

CAS
107-41-5

(CH3)2COHCH2CHOHCH3

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

Exposure
Limits

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 200F.
Incompatibilities & Reactivities

Strong oxidizers, strong acids [Note: Hygroscopic (i.e., absorbs moisture from the air).]
Measurement Methods
OSHA PV2101
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
Respirator Recommendations
Not available.
Important additional information about respirator selection
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