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88461

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2,3-Diaminonaphthalene

BioReagent, suitable for fluorescence, ≥98.0% (HPLC)

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Synonym(s):
naphthalene-2,3-diamine, 2,3-Naphthalenediamine, DAN
Empirical Formula (Hill Notation):
C10H10N2
CAS Number:
Molecular Weight:
158.20
Beilstein/REAXYS Number:
2206394
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.32

product line

BioReagent

Quality Level

assay

≥98.0% (HPLC)

form

solid

mp

196-202 °C

fluorescence

λex 364 nm; λem 406 nm in 0.5 M Na carbonate pH 10.0 (after derivatization with NaNO2 in 0.1 M HCl)

suitability

suitable for fluorescence

SMILES string

Nc1cc2ccccc2cc1N

InChI

1S/C10H10N2/c11-9-5-7-3-1-2-4-8(7)6-10(9)12/h1-6H,11-12H2

InChI key

XTBLDMQMUSHDEN-UHFFFAOYSA-N

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2,3-Diaminonaphthalene BioReagent, suitable for fluorescence, ≥98.0% (HPLC)

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1,8-Diaminonaphthalene 99%

D21405

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2,3-Dihydroxynaphthalene ≥98.0% (HPLC)

37760

2,3-Dihydroxynaphthalene

2,3-Diaminonaphthalene ≥95% (HPLC), powder

D2757

2,3-Diaminonaphthalene

fluorescence

λex 364 nm; λem 406 nm in 0.5 M Na carbonate pH 10.0 (after derivatization with NaNO2 in 0.1 M HCl)

fluorescence

-

fluorescence

-

fluorescence

-

form

solid

form

crystals

form

-

form

powder

assay

≥98.0% (HPLC)

assay

99%

assay

≥98.0% (HPLC)

assay

≥95% (HPLC)

mp

196-202 °C

mp

60-65 °C (lit.)

mp

161-165 °C (lit.), 162-164 °C

mp

198-200 °C

product line

BioReagent

product line

-

product line

-

product line

-

General description

2,3-Diaminonaphthalene, also known as 2,3 DAN, is an aromatic diamino fluorescent compound designed for carrying out DAN assays. Reacting with nitrite, 2,3 DAN forms the fluorescent product, 3-naphthotriazole (NAT), determined fluorometrically.

Application

2,3-Diaminonaphthalene or DAN is suitable for fluorescence-spectroscopic determination of nitrite/ nitrate in milk and soy based food products.

DAN is used in the fluorometric determination of selenium in biological materials.

Packaging

Bottomless glass bottle. Contents are inside inserted fused cone.

Analysis Note

In addition to the emission maximum at 406 nm, there are lower maxima at 426, 386 and 450 nm

pictograms

Exclamation mark

signalword

Warning

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves


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The reaction of 2,3-diaminonaphthalene (DAN) with Se(IV) to form a fluorescent Se-DAN complex is the basis of a fluorometric method for determination of Se. With the aid of metabolically incorporated 75Se the method was critically re-examined. The study showed that
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