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5,5'-Dithiobis(2-nitrobenzoic acid) (Ellmans reagent, DTNB) 99%

Irritant Warning

Warning

Synonyms: DTNB , 5,5'-Disulfanediylbis(2-nitrobenzoic acid) , 2,2'-Dinitro-5,5'-dithiodibenzoic acid , Ellman's reagent , 3,3'-Dithiobis(6-nitrobenzoic acid) , 5,5'-Disulphanediylbis(2-nitrobenzoic acid)

AC11754-0050 AC11754-0010 AC11754-0250

103509-332EA 73.1 USD

103509-332 103509-330 103509-334

5,5'-Dithiobis(2-nitrobenzoic acid) (Ellmans reagent, DTNB) 99%

5,5'-Dithiobis(2-nitrobenzoic acid) (Ellmans reagent, DTNB)

Formula: C₁₄H₈N₂O₈S₂
MW: 396.36 g/mol
Melting Pt: 240…245 °C (dec.)
Storage Temperature: Refrigerator

MDL Number: MFCD00007140
CAS Number: 69-78-3
EINECS: 200-714-4

Specification Test Results

Appearance	Off-white to yellow Crystalline powder
Infrared spectrum	Conforms
Melting point	240 to 245 °C
Loss on drying	≤0.5 %
Titration with NaOH	≥98.5 %
Sulfate (SO4)	≤0.005 %
Ammonium (NH4)	≤0.003 %
Barium (Ba)	≤0.005 %
Calcium (Ca)	≤0.01 %
Iron (Fe)	≤5 ppm
Manganese (Mn)	≤5 ppm
Potassium (K)	≤0.005 %
Sodium (Na)	≤0.005 %
Strontium (Sr)	≤0.005 %
Heavy metals (ICP-OES)	≤5 ppm
Insoluble matter	≤0.005 %

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