Ethyl lactate

  • Propanoic acid, 2-hydroxy-, ethyl ester
  • Ethyl 2-hydroxypropanoate
  • Actylol
  • Ethyl rac-lactate
  • Purasolv ELS
  • Solactol
Formula
CH3CHOHCOOC2H5
Structure
Description
A clear colorless liquid with a mild odor.
Uses
Solvent for basic dyes, hard copals, in lacquer industry, & manufacture of safety glass.

Registry Numbers and Inventories.
CAS
97-64-3
EC (EINECS/ELINCS)
202-598-0
EC Index Number
607-129-00-7
EC Class
Flammable; Irritant
RTECS
OD5075000
RTECS class
Other
UN (DOT)
1192
Merck
12,3863
Beilstein/Gmelin
1209448
Beilstein Reference
4-03-00-00643
Swiss Giftliste 1
G-1189
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C5H10O3
Formula mass
118.13
Boiling point, °C
151
Vapor pressure, mmHg
1.2 (25 C)
Density
1.031 g/cm3
Solubility in water
Very soluble
Surface tension
28.9 g/s2 (17 C)
Refractive index
1.4183 (18 C)
pKa/pKb
13.21 (pKa)
Partition coefficient, pKow
-0.19
Heat of vaporization
45.6 kJ/mol
Heat of combustion
-2747 kJ/mol

Hazards and Protection.
Storage
Keep tightly closed in a cool place in a tightly closed container.
Handling
Containers of this material may be hazardous when emptied. Since emptied containers retain product residues (vapor, liquid, and/or solid), all hazard precautions given in the data sheet must be observed. All five-gallon pails and larger metal containers, including tank cars and tank trucks, should be grounded and/or bonded when material is transferred.
Protection
hemical splash goggles in compliance with OSHA regulations are advised; however, OSHA regulations also permit other type safety glasses. Wear resistant gloves. To prevent repeated or prolonged skin contact, wear impervious clothing and boots.
Respirators
If workplace exposure limit(s) of product or any component is exceeded, a NIOSH/MSHA approved air supplied respirator is advised in absence of proper environmental control. OSHA regulations also permit other NIOSH/MSHA respirators (negative pressure type) under specified conditions.
Small spills/leaks
Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Use water spray to disperse vapors and dilute standing pools of liquid.
Stability
Stable.
Incompatibilities
Strong oxidizing acids may cause a vigorous reaction that is sufficiently exothermic to ignite the reaction products.
Decomposition
Carbon dioxide and carbon monoxide, various hydrocarbons.

Fire.
Flash Point,°C
46
Autoignition, °C
400
Upper exp. limit, %
10.6
Lower exp. limit, %
1.5
Fire fighting
Do not extinguish fire unless flow can be stopped. Use water in flooding quantities as fog. Solid streams of water may be ineffective. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Use alcohol foam, dry chemical or carbon dioxide.
Fire potential
HIGHLY FLAMMABLE.
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. May polymerize explosively when heated or involved in a fire. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.
Health
3
 
Flammability
2
 
 
Reactivity
0
 

Health.
Poison_Class
5
Exposure effects
   Ingestion
Swallowing small amounts of this material during normal handling is not likely to cause harmful effects. Swallowing large amounts may be harmful. This material can get into the lungs during swallowing or vomiting. This results in lung inflammation and other lung injury.
   Inhalation
Inhalation of concentrated vapor may cause drowsiness. Contact with liquid causes mild irritation of eyes and (on prolonged contact) skin. Ingestion may cause narcosis.
   Skin
ay cause mild skin irritation. Prolonged or repeated contact may dry the skin. Symptoms may include redness, burning, drying and cracking of skin, and skin burns.
   Eyes
May cause mild eye irritation. Symptoms include stinging, tearing, and redness.

First aid
 
   Ingestion
Induce vomiting; get medical attention.
   Inhalation
Remove victim to fresh air.
   Skin
Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists.
   Eyes
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.

Transport.
UN number
1192
Response guide
Hazard class
3
Packing Group
III
 
USCG CHRIS Code
ELT
 
Std. Transport #
4912065