Hexylene glycol

  • 2-Methyl-2,4-pentanediol
  • 2,4-Dihydroxy-2-methylpentane
  • 2-Methylpentane-2,4-diol
Formula
C6H14O2
Structure
Description
Clear, colorless liquid with a mild sweetish odor, hygroscopic.
Uses
Microbiocide

Registry Numbers and Inventories.
CAS
107-41-5
EC (EINECS/ELINCS)
203-489-0
EC Index Number
603-053-00-3
EC Class
Irritant
R 36/38
RTECS
SA0810000
RTECS class
Human Data; Primary Irritant
Merck
13,4730
Beilstein/Gmelin
1098298
Beilstein Reference
4-01-00-02565
EPA OPP
68601
Swiss Giftliste 1
G-1688
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C6H14O2
Formula mass
118.18
Melting point, °C
-40
Boiling point, °C
198
Vapor pressure, mmHg
0.05 (20 C)
Vapor density (air=1)
4.1
Evaporization number
0.003 (n-butyl acetate = 1)
Critical temperature
348
Critical pressure
39.6
Density
0.923 g/cm3 (20 C)
Solubility in water
Miscible
Viscosity
34 cp @ 20C
Surface tension
33.1 g/s2 at 20 C
Refractive index
1.42729 (16.7 C)
Dipole moment
2.1 D
Dielectric constant
0.32 (20 C)
Heat of vaporization
56.94 kJ/mol

Hazards and Protection.
Storage
Keep away from heat and flame. Keep container closed when not in use. Store in a cool, dry, well-ventilated area away from incompatible substances.
B3 D2B
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use only in a well ventilated area. Avoid contact with eyes, skin, and clothing. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Wash area with soap and water. Clean up spills immediately, using the appropriate protective equipment. Provide ventilation.
Disposal code
1
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong acids, strong oxidizing agents, acid chlorides, strong reducing agents and acid anhydrides.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, acrid smoke and fumes.

Fire.
Flash Point,°C
93
Autoignition, °C
425
Upper exp. limit, %
7.4
Lower exp. limit, %
1.3
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Extinguishing media: Use foam, dry chemical, or carbon dioxide. For large fires, use water spray or fog.
Fire potential
Slightly flammable. Combustion requires preheating. Moderate hazard.
Health
0
 
Flammability
1
 
 
Reactivity
0
 

Health.
Exposure limit(s)
TLV: 25 ppm; 121 mg/m3 ceiling (ACGIH 1995-1996). NIOSH REL: C 25 ppm (125 mg/m3)
Poison_Class
4
Exposure effects
Abnormally low blood pressure or elevated blood pressure may occur as a result of glycol toxicity. Rapid breathing has been reported with ethylene glycol and glycol ether ingestions. CNS depression, seizures, coma, cerebral edema, and delayed neurologic sequelae may occur following most glycol exposures. CNS symptoms are common following exposures to most glycols. Exposures to glycols have resulted in teratogenicity, specifically craniofacial and neural tube closure defects and skeletal dysplasia in animal studies.
   Ingestion
May cause gastrointestinal irritation with nausea, vomiting and diarrhea.
   Inhalation
May cause irritation of the respiratory tract with burning pain in the nose and throat, coughing, wheezing, shortness of breath and pulmonary edema.
   Skin
Causes skin irritation.
   Eyes
Causes eye irritation. Vapors may cause eye irritation.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. Wash clothing before reuse.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
USCG CHRIS Code
HXG
 
20 Alcohols, Glycols
HS Code
2905 39 10
 
IMO Pollution Category
III