Ethyl lactate

  • 2-Hydroxypropionic acid, ethyl ester
  • Ethyl alpha-hydroxypropionate
  • Ethyl (S)-2-hydroxypropionate
Formula
CH3CH(OH)COOC2H5
Structure
Description
Colorless liquid with characteristic odor
Uses
Production of environmentally friendly solvents.

Registry Numbers and Inventories.
CAS
687-47-8
EC (EINECS/ELINCS)
211-694-1
EC Index Number
607-129-00-7
EC Class
Flammable; Irritant
R 10 37 41
S 24 26 39
RTECS
OD5070000
UN (DOT)
1192
Merck
12,3850
Beilstein/Gmelin
1720839
Beilstein Reference
3-03-00-00446
US TSCA
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C5H10O3
Formula mass
118.13
Melting point, °C
-25
Boiling point, °C
154
Vapor pressure, mmHg
2.5 (20 C)
Vapor density (air=1)
4.07
Critical temperature
330
Critical pressure
38.9
Density
1.042 g/cm3 (20 C)
Solubility in water
Slightly soluble
Refractive index
1.41 (20 C)
Partition coefficient, pKow
-0.072

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area. Keep containers tightly closed.
Handling
Ground and bond containers when transferring material. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid contact with heat, sparks and flame. 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 minimize contact with skin.
Respirators
A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use. Wear a NIOSH/MSHA or European Standard EN 149 approved full-facepiece airline respirator in the positive pressure mode with emergency escape provisions.
Small spills/leaks
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Do not flush into a sewer. Remove all sources of ignition. Use a spark-proof tool. A vapor suppressing foam may be used to reduce vapors.
Disposal code
1
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Oxidizing agents - bases - acids.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
53
Autoignition, °C
400
Upper exp. limit, %
11.4
Lower exp. limit, %
1.5
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Containers may explode in the heat of a fire. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. For large fires, use water spray, fog or alcohol-resistant foam. Do NOT use straight streams of water. Cool containers with flooding quantities of water until well after fire is out.
Fire potential
HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.
Hazards
Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
2
 
Flammability
2
 
 
Reactivity
0
 

Health.
Poison_Class
5 (Substances and products with a low hazard& potential)
Exposure effects
The toxological properties of this substance have not been fully investigated.
   Ingestion
May cause digestive tract disturbances.
   Inhalation
May cause respiratory tract irritation.
   Skin
May cause skin irritation.
   Eyes
May cause eye irritation.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid immediately. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
   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
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Remove contaminated clothing and shoes.
   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.
UN number
1192
Response guide
Hazard class
3
Packing Group
III
 
HS Code
2918 11 00