Diethylene glycol monobutyl ether

  • Butoxydiglycol
  • Diglycol monobutyl ether
  • 2-(2-Butoxyethoxy)ethanol
  • O-Butyl diethyl glycol
Formula
HOCH2CH2OCH2CH2O(CH2)3CH3
Structure
Description
Clear, colorless liquid with a faint butyl odor.
Uses
Chemical intermediate for diethylene glycol monobutyl ether acetate, coalescing agent in latex paints, solvent for stamp pad inks, dye solvent, solvent in high baked enamels, dispersant for vinyl chloride resins in organosols, diluent for hydraulic brake fluids, mutual solvent for soap, oil, water in household cleaners.

Registry Numbers and Inventories.
CAS
112-34-5
EC (EINECS/ELINCS)
203-961-6
EC Index Number
603-096-00-8
EC Class
Irritant
RTECS
KJ9100000
RTECS class
Primary Irritant
Merck
12,1592
Beilstein/Gmelin
1739225
Beilstein Reference
4-01-00-02394
EPA OPP
11502
Swiss Giftliste 1
G-1497
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C8H18O3
Formula mass
162.23
Melting point, °C
-68
Boiling point, °C
230.4
Vapor pressure, mmHg
0.02 (25 C)
Vapor density (air=1)
5.6
Saturation Concentration
26 ppm at 20 C (calculated)
Evaporization number
<0.01 (butyl acetate = 1)
Critical temperature
398
Critical pressure
26.6
Density
0.954 g/cm3 (20 C)
Solubility in water
Miscible
Viscosity
5.05 cp (25 C)
Surface tension
30.0 g/s2
Refractive index
1.4258 (20 C)
Dipole moment
2.05 D
Dielectric constant
9.7 (20 C)
Partition coefficient, pKow
0.56
Heat of vaporization
41.87 kJ/mol
Heat of combustion
-5224 kJ/mol

Hazards and Protection.
Storage
Keep away from heat and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
B3 D2B
Handling
Use with adequate ventilation. Use spark-proof tools and explosion proof equipment. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Avoid ingestion and inhalation. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
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 protective 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. Provide ventilation.
Disposal code
1
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Avoid high temperatures in the presence of strong bases. Acids. Incompatible with strong oxidizers and alkalis.
Decomposition
Carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
78
Autoignition, °C
204
Upper exp. limit, %
24.6
Lower exp. limit, %
0.9
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Combustible Liquid. Containers may explode when heated. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam. Use water spray to cool fire-exposed containers. Cool containers with flooding quantities of water until well after fire is out.
Fire potential
Combustible liquid and vapor.
Health
2
 
Flammability
2
 
 
Reactivity
0
 

Health.
Exposure limit(s)
MAK: 100 mg/m3; (1996)
Poison_Class
5
Exposure effects
Small, repeated exposures of this material are generally more toxic than single, large exposures. Chronic exposures may produce central nervous system and kidney effects.
   Ingestion
Large oral doses may cause irritation to the gastrointestinal tract. Ingestion may cause signs of intoxication, such as nausea, headache, incoordination, dizziness, drowsiness, and slurred speech depending on the amount ingested.
   Inhalation
May cause irritation to the respiratory tract. Symptoms may include coughing, sore throat, labored breathing, and chest pain. May be absorbed into the bloodstream with symptoms similar to ingestion.
   Skin
Brief contact is not irritating. Prolonged skin contact causes mild to moderate local redness and swelling. Can be absorbed through the skin with prolonged and widespread contact.
   Eyes
Causes irritation, redness, and pain.

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. Get medical aid.
   Skin
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.
   Eyes
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
DME
 
40 Glycol ethers
HS Code
2909 43 00
 
IMO Chemical Code
18
IMO Pollution Category
D