Ethyl oxalate

  • Diethyl oxalate
  • Ethanedioic acid, diethyl ester
Formula
C2H5OOCCOOC2H5
Structure
Description
A colorless liquid.
Uses
Manufacture of phenobarbital, ethylbenzyl malonate, triethylamine, & similar chemicals, manufacture of plastics, dyestuff intermediates, solvent for cellulose esters.

Registry Numbers and Inventories.
CAS
95-92-1
EC (EINECS/ELINCS)
202-464-1
EC Index Number
607-147-00-5
EC Class
Harmful; Irritant
R 22 36
RTECS
RO2800000
RTECS class
Primary Irritant
UN (DOT)
2525
Merck
13,3152
Beilstein/Gmelin
606350
Beilstein Reference
4-02-00-01848
Swiss Giftliste 1
G-2678
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C6H10O4
Formula mass
146.14
Melting point, °C
-41
Boiling point, °C
185.7
Vapor pressure, mmHg
0.7 (25 C)
Vapor density (air=1)
5.04
Density
1.0785 g/cm3 (20 C)
Solubility in water
Soluble
Viscosity
1.75 cp (25 C)
Refractive index
1.3803 (12 C)
Partition coefficient, pKow
0/73
Heat of vaporization
42.2 kJ/mol
Heat of combustion
-2999 kJ/mol

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a cool, dry, well-ventilated area away from incompatible substances. Store protected from moisture.
Handling
Wash thoroughly after handling. Use only in a well ventilated area. 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 get on skin or in eyes. Do not ingest or inhale. Do not allow contact with water. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames. Keep from contact with moist air and steam.
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 prevent skin exposure.
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. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Scoop up with a nonsparking tool, then place into a suitable container for disposal. Remove all sources of ignition. Do not get water inside containers.
Disposal code
1
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Oxidizing agents
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
75
Autoignition, °C
410
Upper exp. limit, %
2.67
Lower exp. limit, %
0.42
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. Use water spray to keep fire-exposed containers cool. Containers may explode in the heat of a fire. Combustible Liquid. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam. Do NOT get water inside containers. Cool containers with flooding quantities of water until well after fire is out.
Fire potential
May burn but does not ignite readily.
Hazards
Substance will react with water (some violently) releasing flammable, toxic or corrosive gases and runoff. When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapors may travel to source of ignition and flash back. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated or if contaminated with water.
Combustion products
On combustion, will give off toxic fumes
Health
1
 
Flammability
2
 
 
Reactivity
1
 

Health.
Poison_Class
3
Exposure effects
Chronic inhalation may cause effects similar to those of acute inhalation. Chronic ingestion may cause effects similar to those of acute ingestion.
   Ingestion
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May cause burning sensation in lips, mouth, and throat and feeling of constriction or pain in throat or chest. Tingling or pain in hands may also occur.
   Inhalation
May cause irritation of the respiratory tract with burning pain in the nose and throat, coughing, wheezing, shortness of breath and pulmonary edema.
   Skin
May cause severe skin irritation. Prolonged and/or repeated contact may cause defatting of the skin and dermatitis.
   Eyes
Contact with eyes may cause severe irritation, and possible eye burns.

First aid
 
   Ingestion
Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid. DO NOT use mouth-to-mouth respiration.
   Skin
Get medical aid. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
   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
2525
Response guide
Hazard class
6.1
Packing Group
III
 
HS Code
2917 11 00
 
Std. Transport #
4925115