2,3-Butanediol

  • 2,3-Butylene glycol
  • 2,3-Dihydroxybutane
  • Dimethylethylene glycol
  • sym-Dimethylethylene glycol
  • Pseudobutylene glycol
Formula
CH3CH(OH)CH(OH)CH3
Structure
Description
Nearly colorless liquid or crystalline solid. Odorless.
Uses
Resins, solvent for dyes, intermediate, blending agent.

Registry Numbers and Inventories.
CAS
513-85-9
EC (EINECS/ELINCS)
208-173-6
RTECS
EK0532000
RTECS class
Other
Merck
12,1602
Beilstein/Gmelin
969165
Beilstein Reference
4-01-00-02524
Swiss Giftliste 1
G-1316
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C4H10O2
Formula mass
90.12
Melting point, °C
18 - 20
Boiling point, °C
184
Vapor pressure, mmHg
0.26 (25 C)
Vapor density (air=1)
3.2
Odor Threshold Odor threshold Odorless.
Critical temperature
380
Critical pressure
49
Density
1.048 g/cm3 (0 C)
Solubility in water
Miscible
Surface tension
32.5 g/s2 (25 C)
Refractive index
1.4348
Partition coefficient, pKow
-0.92
Heat of vaporization
48.5 kJ/mol

Hazards and Protection.
Storage
Store in a cool, dry place. Keep container closed when not in use.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. 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 protective gloves and clothing to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.
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. Clean up spills immediately, using the appropriate protective equipment.
Disposal code
1
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Acid chlorides, acid anhydrides, oxidizing agents, chloroformates, reducing agents.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
85
Autoignition, °C
395
Upper exp. limit, %
11.4
Lower exp. limit, %
3.1
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. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam.
Fire potential
Moderate fire hazard; when exposed to heat or flame.
Health
0
 
Flammability
2
 
 
Reactivity
0
 

Health.
Poison_Class
-
Exposure effects
May cause kidney injury.
   Ingestion
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May cause systemic toxicity with acidosis. May cause cardiac disturbances. May cause kidney failure. The toxicological properties of this substance have not been fully investigated.
   Inhalation
May cause effects similar to those described for ingestion. The toxicological properties of this substance have not been fully investigated.
   Skin
May cause skin irritation. No information regarding skin irritation and other potential effects was found.
   Eyes
May cause eye irritation. No information regarding eye irritation and other potential effects was found.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid immediately.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   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
BUG
 
20. Alcohols. Glycols
HS Code
2905 39 80
 
IMO Pollution Category
D