Trimethyl citrate

  • Citric acid, trimethyl ester
  • 1,2,3-Propanetricarboxylic acid, 2-hydroxy-, 1,2,3-trimethyl ester
  • 3-Hydroxy-3-methoxycarbonylpentanedioic acid dimethyl ester
Formula
C9H14O7
Structure
Description
White crystals.

Registry Numbers and Inventories.
CAS
1587-20-8
EC (EINECS/ELINCS)
216-449-2
22 24/25
Beilstein/Gmelin
1796169
Canada DSL/NDSL
NDSL
US TSCA
Listed
New Zealand
Listed
Korea ECL
Listed

Properties.
Formula
C9H14O7
Formula mass
234.21
Melting point, °C
75
Boiling point, °C
285
Vapor pressure, mmHg
0.0073 (25 C)
Density
1.27 g/cm3 (20 C)
Solubility in water
33 g/L (25 C)
pKa/pKb
10.43 (pKa)
Partition coefficient, pKow
-0.10
Heat of vaporization
55.29 kJ/mol

Hazards and Protection.
Storage
Keep tightly closed. Store in a cool dry place.
Protection
Compatible chemical-resistant gloves. Chemical safety goggles. Protective clothing.
Respirators
Use respirators and components tested and approved under appropriate government standards such as NIOSH (US) or CEN (EU). Respiratory protection is not required. Where protection from nuisance levels of dusts are desired, use type N95 (US) or type P1 (EN 143) dust masks.
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.
Decomposition
Oxides of carbon.

Fire.
Flash Point,°C
79
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.
Exposure effects
May be harmful by inhalation, ingestion, or skin absorption.
   Inhalation
Material may be irritating to mucous membranes and upper respiratory tract.
   Skin
May cause irritation.
   Eyes
May cause 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.