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E7889 Sigma-Aldrich

Ethylenediaminetetraacetic acid disodium salt solution

for molecular biology, 0.5 M in H2O, DNase, RNase, NICKase and protease, none detected

Synonym: (Ethylenedinitrilo)tetraacetic acid disodium salt, EDTA disodium salt, EDTA-Na2



Frequently Asked Questions

Frequently Asked Questions are available for this Product.

Preparation Note

Prepared in 18 megohm water with Molecular Biology Reagent EDTA (E 5134)

Price and Availability

Ultrafree Centrifugal Filter Units

Biomedical Applications
Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 


Certificate of Analysis

Certificate of Origin

Frequently Asked Questions

Can a solution of EDTA disodium salt, Product E7889, be autoclaved?
Yes, solutions of EDTA may be autoclaved.
What is the pH of E7889, EDTA disodium salt solution?
E7889 has a pH specification of 7.5 to 8.5 at 25 °C. To view the quality control specifications for this product, click on the following link: http://www.sigmaaldrich.com/catalog/DataSheetPage.do?brandKey=SIAL&symbol=E7889
How many divalent cations does Product E7889, EDTA disodium salt, complex with?
EDTA forms 1:1 complex with divalent cations.
What type of biological activity does Product E7889, EDTA disodium salt, exhibit?
EDTA is a metal ion-dependent enzyme inhibitor. It may be used as a metalloprotease inhibitor at a concentration of 1-10 µm, or as a DNAse I inhibitor at a concentration of 1-10 mM. To view this information in E7889 product information sheet, click on the following link: http://www.sigmaaldrich.com/etc/medialib/docs/Sigma-Aldrich/Product_Information_Sheet/e7889pis.Par.0001.File.tmp/e7889pis.pdf
At what concentration should I use Product E7889, EDTA disodium salt, as an anticoagulant?
The optimal concentration of EDTA to be used as an anticoagulant is 1.5 mg of EDTA disodium salt per ml of blood or 1-2 drops of a 2% EDTA solution per ml of blood. To view this information in E7889 Product Information sheet, click on the following link:http://www.sigmaaldrich.com/sigma-aldrich/product_information_sheet/e7889pis.pdf
Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis. These documents are located on the product detail page under Useful Links & Tools. Click on the following link to search for a Certificate of Analysis. Please click the following link to see the details on our Product Dating Information.
How do I get lot-specific information or a Certificate of Analysis?
A Certificate of Analysis is available by lot number and can be obtained through our Advanced Search Option: http://www.sigmaaldrich.com/catalog/AdvancedSearchPage.do
How do I find price and availability?
There are several ways to find pricing and availability for our products.  Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers. 
What is the Department of Transportation shipping information for this product?
Transportation information can be found in Section 14 of the product's (M)SDS. To access the shipping information for this material, use the link on the product detail page for the product, or search here. 
My question is not addressed here, how can I contact Technical Service for assistance?
Use the option to the right to "Ask a Question" by email of a Technical Service Scientist.
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