1.03291
2,2′-Dinitro-5,5′-dithiodibenzoic acid
for biochemistry
Synonym(s):
2,2′-Dinitro-5,5′-dithiodibenzoic acid, 5,5′-Dithiobis(2-nitrobenzoic acid), DTNB, Ellmans′ reagent
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About This Item
Product Name
2,2′-Dinitro-5,5′-dithiodibenzoic acid, for biochemistry
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
assay
≥99.0% (acidimetric)
form
solid
mp
240-244 °C
bulk density
290 kg/m3
Quality Level
Analysis Note
Identity (IR-spectrum): passes test
Melting point: 240 - 244 °C
Spec. Absorptivity A 1%/1cm (307 nm; 0.001 %; methanol): 330 - 370
Heavy metals (as Pb): ≤ 0.001 %
Fe (Iron): ≤ 0.001 %
TLC-Test: passes test
Sulfated ash (600 °C): ≤ 0.1 %
Water (according to Karl Fischer): ≤ 0.5 %
Storage Class
11 - Combustible Solids
wgk
WGK 3
Certificates of Analysis (COA)
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