If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf
D8130
5,5′-Dithiobis(2-nitrobenzoic acid)
≥98%, BioReagent, suitable for determination of sulfhydryl groups
Synonym(s):
3-Carboxy-4-nitrophenyl disulfide, 6,6′-Dinitro-3,3′-dithiodibenzoic acid, Bis(3-carboxy-4-nitrophenyl) disulfide, DTNB, Ellman’s Reagent
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| Size/SKU | Availability | Price |
|---|
About This Item
product line
BioReagent
Quality Segment
assay
≥98%
form
powder
mp
240-245 °C (dec.) (lit.)
suitability
suitable for determination of sulfhydryl groups
SMILES string
OC(=O)c1cc(SSc2ccc(c(c2)C(O)=O)[N+]([O-])=O)ccc1[N+]([O-])=O
InChI
1S/C14H8N2O8S2/c17-13(18)9-5-7(1-3-11(9)15(21)22)25-26-8-2-4-12(16(23)24)10(6-8)14(19)20/h1-6H,(H,17,18)(H,19,20)
InChI key
KIUMMUBSPKGMOY-UHFFFAOYSA-N
General description
Application
1 of 1
This Item | |||
|---|---|---|---|
| assay ≥98% | assay 99% | assay ≥98% (titration) | assay 96% |
| Quality Level 200 | Quality Level 200 | Quality Level 100 | Quality Level 200 |
| form powder | form powder | form solid | form solid |
| mp 240-245 °C (dec.) (lit.) | mp 240-245 °C (dec.) (lit.) | mp - | mp 155-157 °C (lit.) |
| suitability suitable for determination of sulfhydryl groups | suitability - | suitability - | suitability - |
| product line BioReagent | product line ReagentPlus® | product line - | product line - |
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Storage Class
11 - Combustible Solids
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
dust mask type N95 (US), Eyeshields, Gloves
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How can I determine the shelf life / expiration / retest date of this product?
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How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
Helpful?
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To dissolve DTNB which alcohol should use?
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This product is tested for solubility in Ethanol at 10 mg/mL. Solutions may also be prepared at 5mM in 100 mM sodium or potassium phosphate buffer, pH 7.2, containing 0.1 mM EDTA. Please see the link below to review the entire product datasheet for additional information:
https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/product/documents/414/707/d8130pis.pdfHelpful?
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what is the storage temperature for this chemical
1 answer-
This product can be stored at room temperature.
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