a,a’-Diglycerol

  • Bis(2,3-dihydroxypropyl) ether
  • 3,3'-Oxydi(1,2-propanediol)
  • 4-Oxaheptane-1,2,6,7-tetrol
  • NSC 8689
Formula
C6H14O5
Structure
Description
Colorless, clear viscous liquid.

Registry Numbers and Inventories.
CAS
627-82-7
EC (EINECS/ELINCS)
211-013-8
36/37/38
Beilstein/Gmelin
1904420
New Zealand
Listed

Properties.
Formula
C6H14O5
Formula mass
166.17
Melting point, °C
119
Boiling point, °C
407
Vapor pressure, mmHg
3E-8 (25 C)
Critical temperature
476
Critical pressure
48.47
Density
1.280 g/cm3 (20 C)
Solubility in water
251 g/L (25 C)
Refractive index
1.489 (20 C)
pKa/pKb
13.31 (pKa)
Partition coefficient, pKow
-2.61
Heat of vaporization
76.14 kJ/mol

Hazards and Protection.
Protection
Compatible chemical-resistant gloves. Chemical safety goggles. Protective clothing.
Respirators
Use respirators and components tested and appro ved under appropriate government standards such as NIOSH (US) or CEN (EU). Where risk assessment shows air-purifying respirators are appropriate use a full-face respirator with multi-purpose combination (US) or type ABEK (EN 14387) respirator cartridges as a backup to engineering controls. If the respirator is the sole means of protection, use a full-face supplied air respirator.
Small spills/leaks
Absorb on sand or vermiculite and place in closed containers for disposal. Ventilate area and wash spill site after material pickup is complete.
Stability
Stable at normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.

Fire.
Flash Point,°C
200
Fire fighting
Extinguish with water spray, carbon dioxide, dry chemical powder or appropriate foam. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.
Hazards
Emits toxic fumes under fire conditions.
Health
2
 
Flammability
0
 
 
Reactivity
0
 

Health.
Exposure effects
   Ingestion
May be harmful if swallowed.
   Inhalation
May be harmful if inhaled. Material is irritating to mucous membranes and upper respiratory tract.
   Skin
Causes skin irritation.May be harmful if absorbed through the skin.
   Eyes
Causes irritation.

First aid
 
   Ingestion
If swallowed, wash out mouth with water provided person is conscious. Call a physician.
   Inhalation
If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult, give oxygen.
   Skin
In case of contact, immediately wash skin with soap and copious amounts of water. Remove contaminated clothing and shoes. Call a physician.
   Eyes
In case of contact with eyes, flush with copious amounts of water for at least 15 minutes. Assure adequate flushing by separating the eyelids with fingers. Call a physician.

Transport.