All Photos(1)



Nitrate Reagent A

suitable for microbiology

1-Naphthylamine solution
CAS Number:
MDL number:
PubChem Substance ID:

product line


Quality Level

shelf life

limited shelf life, expiry date on the label


acetic acid 5 N, 1000 mL
α-naphthylamine, 5 g


microbe id | metabolite detection: suitable
microbiology: suitable

Featured Industry

Clinical Testing
Food and Beverages


Enterobacter spp.
Neisseria spp.
anaerobic bacteria



InChI key


General description

α-Naphtylamine and sulfanilic acid are used for detection of nitrate reduction by bacteria. Organisms containing nitrate reductase reduce nitrate to nitrite, which forms a diazonium salt with sulfanilic acid and reacts with α-naphtylamine to form a red azo dye.



Signal Word


Hazard Statements

Hazard Classifications

Eye Dam. 1 - Skin Corr. 1B

Storage Class Code

8A - Combustible, corrosive hazardous materials



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

Certificate of Analysis

Certificate of Origin

Zuofu Hu et al.
Optics letters, 37(15), 3072-3074 (2012-08-04)
An ultraviolet photodetector was fabricated based on Mg0.07Zn0.93O heterojunction. N, N'-bis (naphthalen-1-y1)-N, N'-bis(pheny) benzidine was selected as the hole transporting layer. I-V characteristic curves of the device were measured in the dark and under the illumination of 340 nm UV...
Xiaolin Zhang et al.
Inorganic chemistry, 51(4), 2325-2331 (2012-02-10)
A unique gadolinium complex, Nap-DO3A-Gd, comprising a naphthylamine luminescent moiety, a di-2-picolylamine (DPA) binding chelator, and a 1,4,7,10-tetraazacyclododecane-1,4,7-triacetic acid (DO3A) moiety has been designed and synthesized as a dual-functional probe for selective magnetic resonance imaging and fluorescent sensing of copper(II)...
Time-dependent intensity changes of free fatty acids detected by matrix-assisted laser desorption and ionization time-of-flight mass spectrometry in the presence of 1,8-bis-(dimethylamino)naphthalene--a cautionary note.
Mandy Eibisch et al.
Rapid communications in mass spectrometry : RCM, 26(13), 1573-1576 (2012-05-29)
Arvydas Tamulis et al.
Origins of life and evolution of the biosphere : the journal of the International Society for the Study of the Origin of Life, 43(1), 49-66 (2012-12-18)
The quantum mechanical self-assembly of two separate photoactive supramolecular systems with different photosynthetic centers was investigated by means of density functional theory methods. Quantum entangled energy transitions from one subsystem to the other and the assembly of logically controlled artificial...
Silvia Spinelli et al.
Insect biochemistry and molecular biology, 42(1), 41-50 (2011-11-15)
Apis mellifera (Amel) relies on its olfactory system to detect and identify new-sources of floral food. The Odorant-Binding Proteins (OBPs) are the first proteins involved in odorant recognition and interaction, before activation of the olfactory receptors. The Amel genome possess...


Vibrio Detection

Vibrios are motile, curved or comma-shaped bacilli and have a single polar flagella with sheet proteins. They are often found in open water, freshwater and saltwater.

On the Trail of Campylobacter

On the Trail of Campylobacter - The Campylobacter is one of the leading causes of human gastroenteritis. Common Campylobacter species C. jejuni, C. coli, and C. lari are responsible for most cases of campylobacteriosis. However, other species, like C. fetus, which causes spontaneous abortions, have also been associated with human illness. Campylobacter are Gram-negative, spiral-shaped, microaerophilic and motile bacteria with uni- or bi-polar fl agella

Identification of Microorganisms Based on Color

For microbiologists the most fundamental stain was developed in 1884 by the Danish bacteriologist Hans Christian Gram.

Differentiation of Escherichia coli from coliforms

There are many other methods of detection to indicate the presence of E. coli. Review common tests and biochemical reactions for this contaminant.


US EPA Method 8270 (Appendix IX): GC Analysis of Semivolatiles on Equity®-5 (30 m x 0.25 mm I.D., 0.50 μm)

US EPA Method 8270 (Appendix IX): GC Analysis of Semivolatiles on Equity®-5 (30 m x 0.25 mm I.D., 0.50 μm)

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service