EDTA

  • Ethylenediaminetetraacetic acid
  • (Ethylenedinitrilo)tetraacetic acid
  • Edetic acid
Formula
C10H16N2O8
Structure
Description
White crystalline powder.
Uses
As antioxidant in foods.

Registry Numbers and Inventories.
CAS
60-00-4
EC (EINECS/ELINCS)
200-449-4
EC Class
irritant, dangerous for the environment
R 36/37/38
RTECS
AH4025000
RTECS class
Drug; Mutagen; Reproductive Effector
UN (DOT)
9117
Merck
13,3546
Beilstein/Gmelin
1716295
Beilstein Reference
4-04-00-02449
EPA OPP
39101
Swiss Giftliste 1
G-7195
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C10H16N2O8
Formula mass
292.25
Melting point, °C
220
Boiling point, °C
614
Decomposition point, °C
242
Vapor pressure, mmHg
1E-16 (25 C)
Vapor density (air=1)
10
Odor Threshold Odor threshold Odorless
Density
0.86 g/cm3 (20 C)
Solubility in water
500 mg/L
pKa/pKb
2.13 (pKa)
Partition coefficient, pKow
-0.43
Heat of vaporization
99.5 kJ/mol
Heat of combustion
-4461 kJ/mol

Hazards and Protection.
Storage
Do not store in direct sunlight. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes. Keep container tightly closed. Avoid ingestion and inhalation.
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
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.
Small spills/leaks
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation.
Disposal code
3
Stability
Stable at room temperature in closed containers under normal storage and handling conditions. Decarboxylates above 150C.
Incompatibilities
Strong oxidizing agents, strong bases, aluminum, copper, copper alloys, nickel.
Decomposition
Nitrogen oxides, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
325
Autoignition, °C
> 200
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Dusts at sufficient concentrations can form explosive mixtures with air. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Extinguishing media: Use extinguishing media most appropriate for the surrounding fire. In case of fire use water spray, dry chemical, carbon dioxide, or appropriate foam.
Fire potential
May burn but does not ignite readily.
Hazards
Some may burn but none ignite readily. May polymerize explosively when heated or involved in a fire. Containers may explode when heated. Some may be transported hot.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
2
 
Flammability
0
 
 
Reactivity
0
 

Health.
Poison_Class
4
Exposure effects
May cause reproductive and fetal effects. Laboratory experiments have resulted in mutagenic effects. Chronic exposure may cause kidney damage.
   Ingestion
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. Exposure may cause kidney injury, muscle cramps, bone-marrowdepression, and a generalized allergic reaction. Ingestion of large quantities may cause appreciable systemic toxicity involving blood chemistry changes due to chelation properties.
   Inhalation
Causes irritation of the mucous membrane and upper respiratory tract.
   Skin
Causes skin irritation. Causes redness and pain.
   Eyes
Causes eye irritation. Causes redness and pain.

First aid
 
   Ingestion
Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   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.

Transport.
UN number
9117
Response guide
Hazard class
9
USCG CHRIS Code
EDT
 
HS Code
2922 49 95
 
Std. Transport #
4962670