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139-33-3

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Identification

Name
Ethylenediaminetetraacetic acid disodium salt
CAS
139-33-3
Synonyms
1,2-DIAMINOETHANE-N,N,N',N'-TETRA-ACETIC ACID DISODIUM SALT
1,2-DIAMINOETHANE-N,N,N',N'-TETRA-ACETIC ACID DISODIUM SALT 2H2O
4C EDTA
COMPLEXONE III
COMPLEXONE III(R)
DISODIUM DIHYDROGEN ETHYLENEDIAMINE TETRAACETATE
DISODIUM DIHYDROGEN ETHYLENEDIAMINETETRAACETATE DIHYDRATE
DISODIUM DIHYDROGEN ETHYLENEDIAMINETETRA-ACETIC DIHYDRATE
DISODIUM EDETATE
DISODIUM EDETATE DIHYDRATE
DISODIUM EDTA
DISODIUM ETHYLENEDIAMINETETRAACETATE
DISODIUM ETHYLENEDIAMINETETRAACETATE DIHYDRATE
Disodium ethylenediaminetetraacetic acid
DISODIUM (ETHYLENEDINITRILO)TETRAACETATE, DIHYDRATE
EDATHAMIL DISODIUM SALT DIHYDRATE
EDETATE DISODIUM
EDETATE DISODIUM, DIHYDRATE
EDETATE DISODIUM DIHYDROGEN, DIHYDRATE
EDETATE DISODIUM SALT DIHYDRATE
EINECS(EC#)
205-358-3
Molecular Formula
C10H14N2Na2O8
MDL Number
MFCD00070672
Molecular Weight
336.21
MOL File
139-33-3.mol

Chemical Properties

Appearance
white crystalline solid
mp 
248 °C (dec.)(lit.)

bp 
>100 °C

density 
1.01 g/mL at 25 °C

storage temp. 
2-8°C

solubility 
H2O: clear, colorless

form 
solution

color 
≤5 (0.5 M)(APHA)

Uses
Disodium Dihydrogen EDTA is a sequestrant and chelating agent whose complete name is disodium ethylenediamine tetraacetate. it is a nonhygroscopic powder that is colorless, odorless, and tasteless at recommended use levels. A 1% solution has a ph of 4.3–4.7. It is used to control the reaction of trace metals to include calcium and magnesium with other organic and inorganic components in food to prevent deterioration of color, texture, and development of precipitates and to prevent oxidation. Its function is comparable to that of disodium calcium edta.
Uses
disodium EDTA is a preservative used in concentrations of 0.1 to 0.5 percent.
CAS DataBase Reference
139-33-3(CAS DataBase Reference)
EPA Substance Registry System
139-33-3(EPA Substance)

Safety Data

Hazard Codes 
Xn
Risk Statements 
R36/38:Irritating to eyes and skin .
R36/37/38:Irritating to eyes, respiratory system and skin .
R22:Harmful if swallowed.
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
S37/39:Wear suitable gloves and eye/face protection .
WGK Germany 
2

RTECS 
AH4410000

HS Code 
29224900
Safety Profile
Poison by intraperitoneal and intravenous routes. Moderately toxic by ingestion. Experimental teratogenic and reproductive effects. Mutation data reported. The calcium disodium salt of EDTA is used as a chelating agent in treating lead poisoning. When heated to decomposition it emits toxic fumes of NOx and NasO.

Raw materials And Preparation Products

Material Safety Data Sheet(MSDS)

Questions And Answer

Description
Ethylenediaminetetra-acetic acid (abbreviated as EDTA) is used in several industrial applications attributing to its high ability to bind to most of metal cations. EDTA is produced as several salts, e.g. ethylenediaminetetra-acetic acid disodium salt (EDTAS).
EDTA and its salts are used as chelating agents in cosmetic formulations. EDTAS is a preservative, sequestrant, and stabilizer in foods. EDTA is added to ascorbic acid-disodium benzoate containing soft drinks to mitigate the formation of benzene. EDTA and its salts are used as a component in the production of food-contact paper and paperboard. EDTAS is permitted in the feed and drinking water of animals and/or for the treatment of food-producing animals. In the textile industry, EDTA and its salts prevent metal ion impurities from changing colors of dyed products. In the pulp and paper industry, EDTA and its salts inhibit the ability of metal ions from catalyzing the disproportionation of hydrogen peroxide (a typical bleaching agent). EDTAS is used in synthetic rubber manufacture. EDTAS is also used as a corrosion inhibitor to carbon steel in the industries. As an anticoagulant, EDTAS and tripotassium salts of EDTA are most commonly used.
References
[1] Victor O. Sheffel (2000) Indirect Food Additives and Polymers: Migration and Toxicology.
[2] Lanigan RS, Yamarik TA (2002) Final report on the safety assessment of EDTA, calcium disodium EDTA, diammonium EDTA, dipotassium EDTA, disodium EDTA, TEA-EDTA, tetrasodium EDTA, tripotassium EDTA, trisodium EDTA, HEDTA, and trisodium HEDTA, Int J Toxicol., 21, 95-142

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