55-Dithiobis(2-Nitrobenzoic Acid) [For Determination Of Sh Groups] 98.0%(HPLC)
98.0%(HPLC)
Properties
| Vapour pressure | 0.0±2.2 mmHg at 25℃ |
| Assay Purity | >98%(HPLC) |
| Refractive index | 1.769 |
| B pt. | 671.9℃ at 760 mmHg |
| M pt. | 240-245 ℃(dec.)(lit.) |
| Density | 1.787 g/cm3 |
Safety Information
| Hazard Statement(s) | H315-H319 |
| Precautionary Statement | P264-P280-P302 + P352-P337 + P313-P305 + P351 + P338-P362 + P364-P332 + P313 |
| Symbol |
|
| Signal word | Warning |
| HS Code | 29309070 |
| Flash point | 360.1℃ |
| Storage Temp. | Store at room temperature. |
| Packaging | Poly Bottle |
Description
Recommended products
26-Dichloro-14-Benzoquinone 98.0%(GC)
Application
Ellmans reagent maybe used for acetylcholinesterase assay and to specifically label cysteine residues.It is a sensitive reagent for measuring the free sulfhydryl content in proteins peptides and tissues.
Purpose
For R&D use onlynot for drug household or other uses.
General Description
55-Dithiobis(2-nitrobenzoic acid) is also called DTNB or Ellmans reagent.It is a water soluble reagent which interacts with thiol groups and can be used conveniently at neutral pH.Thiolate anion (RS-) reacts with Ellmans reagent (DTNB2-) to produce 2-nitro-5-thiobenzoate anion (TNB2-) and one mixed disulfide (R-S-TNB-). TNB2-has a high molar absorption coefficient and absorbs at 412nm. This absorption is independent of pH at pH 7.3.
Documents
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