Skip to Content
Merck
CN

100994

Para Red

Dye content 95 %

Synonym(s):

1-(4-Nitrophenylazo)-2-naphthol, 1-(p-Nitrophenylazo)-2-naphthol

Sign In to View Organizational & Contract Pricing.

Select a Size

About This Item

Linear Formula:
O2NC6H4N=NC10H6OH
CAS Number:
6410-10-2
Molecular Weight:
293.28
NACRES:
NA.47
PubChem Substance ID:
24846529
UNSPSC Code:
12171500
EC Number:
229-093-8
MDL number:
MFCD00003908

Key Documents

View All Documentation
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

InChI key

WOTPFVNWMLFMFW-UHFFFAOYSA-N

InChI

1S/C16H11N3O3/c20-15-10-5-11-3-1-2-4-14(11)16(15)18-17-12-6-8-13(9-7-12)19(21)22/h1-10,20H

SMILES string

Oc1ccc2ccccc2c1N=Nc3ccc(cc3)[N+]([O-])=O

form

solid

composition

Dye content, 95%

mp

248-252 °C (lit.)

λmax

488 nm

Quality Level

100

General description

Para Red is a biological stain. It is used as a fat soluble chemical dye and food additive. It is a banned colorant and a number of analytical techniques have been developed to detect it in food.

Biochem/physiol Actions

Para Red may be used to make standards for analysis.

pictograms

Exclamation mark
GHS07

signalword

Warning

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
SHBS6036
SHBR7071
SHBP4125
SHBM2902
MKCF4351

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Z X Xu et al.
Journal of food science, 75(1), C49-C54 (2010-05-25)
In this article, we prepared a novel imprinted polymer by a room temperature ionic liquid-mediated surface molecular imprinting technique in combination with a sol-gel process. This polymer was characterized by static and kinetic adsorption experiments and exhibited good recognition ability
Constantinos K Zacharis et al.
Talanta, 84(2), 480-486 (2011-03-08)
This work reports a fast and simple liquid chromatographic method for the simultaneous determination of five banned fat-soluble synthetic colorants, namely Sudan I-IV and Para-Red, in spice samples. The analytes were successfully separated isocratically in less than 5 min on
Fabio Mazzotti et al.
Journal of agricultural and food chemistry, 56(1), 63-67 (2007-12-07)
A high-throughput mass spectrometric method is presented for the simultaneous detection of Sudan I, II, III, IV, and Para-Red azodyes in foodstuff. The method is based on the use of deuterium-labeled internal standards and atmospheric pressure chemical ionization (APCI) in

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