CasNo.6381-92-6,Ethylenediaminetetraacetic acid disodium salt,(6381-92-6) Suppliers

1 Metric Ton	FOB Price:USD 1.0000 -2.0000

Min.Order :1 Metric Ton
Purity: 99%
Payment Terms : L/C,T/T,Other

Keywords

Ethylenediaminetetraacetic acid disodium salt acid disodium salt Ethylenediaminetetraacetic

Quick Details

Appearance:White crystalline powder
Application:As heavy metal antipoison, complexing agent, anti-oxygen synergist, stabilizer and softener.Calcium, magnesium and other metal reagents, metal masking agents.Disodium ethylenediamine tetraacetate [1]
PackAge:25kg\bucket
ProductionCapacity:100|Metric Ton|Week
Storage:Ventilated, dry and cool
Transportation:shipping

Superiority:

Hebei yanxi chemical co. LTD. has expanded a compositive entity from initially only as a small manufacturer. The company dedicated to the development, production and marketing of chemicals.
After many years of efforts, we have established stable and friendly business relations with dozens of European and American pharmaceutical companies, multinational chemical companies and importers.At home and many production plants and research and development units have established long - term commission processing and production relations.We have a number of laboratories specializing in technology development and custom synthesis, as well as some production bases, mainly in hebei, sichuan, jiangsu and shandong.
Our company possesses the right of self-support import & export, a strong technical force and advanced processing equipments. The quality of the products has been strictly inspected and all kinds of index have reached or exceeded domestic and international standards.
Looking to the future, we will adhere to the spirit of “professional, innovative, integrity, development”, and adhere to the management philosophy of “customer-orientation and pursing development via integrity” and through which to provide customers with first-class products and service. We sincerely welcome friends both at home and abroad to visit our company and hope to achieve win-win cooperation with you!

Details:

[rank] : AR

[structural formula] : HOOCH2C CH2COONa n-ch2-n HOOCH2C CH2COONa

[properties] : white or milky white crystalline or granular powder without odor or saltiness.Soluble in water, insoluble in ethanol, ether.

[purpose] : as heavy metal detoxifying agent, complexing agent, anti-oxygen synergist, stabilizer and softener.Calcium, magnesium and other metal reagents, metal masking agents.Disodium ethylenediamine tetraacetate [1] is an important complexing agent for complexing metal ions and separating metals.

Disodium ethylenediamine tetraacetic acid ACTS on calcium ions

[properties] : white crystalline powder, soluble in water, hardly soluble in ethanol and ether, its aqueous solution pH value is about 5.3.

Storage: sealed for preservation.

The preparation of

It can be made by the action of EDTA with sodium hydroxide and calcium carbonate.

Ethylenediamine tetraacetic acid called EDTA again, it is a kind of good in the chemical compound, it has six coordination atoms, forming complexes are called chelates, EDTA is often used in coordination titration, usually determine the content of metal ions.

features

The characteristics of

1. EDTA has extensive coordination properties and can form stable chelates with almost all metal ions.

Advantage: it provides the possibility of broad determination of elements (better than acid, alkali and precipitation methods).

Disadvantages: easy interference between multiple components - selectivity.

2. The ratio between EDTA and the formed m-edta is 1:1.

3. Most chelates are charged, so they dissolve in water and react quickly.

Toxicity protection: this product is low toxicity.Transoral LD50 was 2000mg/kg for rats.See "ethylenediamine tetraacetic acid" for other toxicity and protection.

Packing: in cartons or sacks lined with double plastic bags of 80kg each.

Physicochemical property: white crystalline powder.Low toxicity, soluble in water, 5% aqueous solution pH value 4 ~ 6.Acidic.It's hard to dissolve in alcohol.

Mainly used as complexing agent.

Dissociation equilibrium

In aqueous solution, two carboxyl H+ transfer to amino N to form bipolar ions:

EDTA is commonly expressed as H4Y, because it has little solubility in water and acid, it is commonly used as disodium salt: Na2H2Y·2H2O, or EDTA.

Ka1 = 10-0.9;Ka2 = 10-1.6;Ka3 = 10-2.1;Ka4 = 10-2.8;Ka5 = 10-6.2;Ka6 = 10-10.3.

Seven forms:

H6Y2+, H5Y+, H4Y, H3Y-, H2Y2-, HY3-, Y4-

When pH<1, it mainly exists in the form of H6Y2+.

When pH>11, it exists mainly in the form of Y4- - coordination ions.