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CAS RN: 16536-30-4 | Product Number: A5303

Bis(2,4-dinitrophenyl) Oxalate [Chemiluminescence reagent for the determination of fluorescent compounds by HPLC and FIA]


Purity: >98.0%(T)
Synonyms:
  • DNPO
  • Oxalic Acid Bis(2,4-dinitrophenyl) Ester
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Product Number A5303
Purity / Analysis Method >98.0%(T)
Molecular Formula / Molecular Weight C__1__4H__6N__4O__1__2 = 422.22 
Physical State (20 deg.C) Solid
Storage Temperature Room Temperature (Recommended in a cool and dark place, <15°C)
Condition to Avoid Light Sensitive
CAS RN 16536-30-4
Reaxys Registry Number 2318321
PubChem Substance ID 87563137
MDL Number

MFCD00010712

Specifications
Appearance White to Light yellow powder to crystal
Purity(Neutralization titration) min. 98.0 %
Properties (reference)
Solubility (soluble in) Benzene, Toluene
GHS
Pictogram Pictogram Pictogram
Signal Word Danger
Hazard Statements H315 : Causes skin irritation.
H319 : Causes serious eye irritation.
H228 : Flammable solid.
Precautionary Statements P240 : Ground/bond container and receiving equipment.
P210 : Keep away from heat/sparks/open flames/hot surfaces. No smoking.
P241 : Use explosion-proof electrical/ ventilating/ lighting/ equipment.
P264 : Wash skin thoroughly after handling.
P280 : Wear protective gloves/ eye protection/ face protection.
P370 + P378 : In case of fire: Use dry sand, dry chemical or alcohol-resistant foam to extinguish.
P337 + P313 : If eye irritation persists: Get medical advice/ attention.
P305 + P351 + P338 : IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P302 + P352 : IF ON SKIN: Wash with plenty of soap and water.
P332 + P313 : If skin irritation occurs: Get medical advice/ attention.
P362 : Take off contaminated clothing and wash before reuse.
Related Laws:
Transport Information:
UN Number (DOT-AIR) UN1325
Class (DOT-AIR) 4.1
Packing Group (TCI-A) II
HS Number 2914.50.5000
Application
Chemiluminescence Application in Analytical Chemistry

Chemiluminescence is the phenomenon of luminescence emission when the excited state of a chemical species which occurred by a chemical reaction reverts to the ground state. Bis(2,4,6-trichlorophenyl) Oxalate (TCPO) [A5302], Bis(2,4-dinitrophenyl) Oxalate (DNPO) [A5303] are drawing attention in the aspects of high quantum yields and stability. The emission mechanism is shown below.1)

1) Produce an active intermediate (1,2-dioxetanedione) through the reaction with H2O2.
2) The intermediate excites a fluorescent substance from the ground state to an excited state.
3) The fluorescent substance in the excited state returns to the ground state with the emission of light.

Based on this chemiluminescence reaction, the quantifications of H2O2 and glucose,2) light emitting detection of dansyl amino acid on TLC,3) and quantification of polycyclic aromatic hydrocarbons4) have been reported.

This chemiluminescence reaction was applied to the detection part of HPLC, and 10 fmol level dansyl amino acid was successfully separated and quantified,5) which compared to the conventional method using fluorescence, showed more than 1 order (50 times) higher sensitivity. Furthermore, Imai and co-workers have developed the assay system of dansyl amino acid making use of the DNPO-H2O2 luminous reaction which has been applied to flow-injection analysis.6) The detection limit of dansyl alanine is 5 fmol.

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