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89774

Supelco

Citrus Red 2

analytical standard

Synonym(s):

1-(2,5-Dimethoxyphenylazo)-2-naphthol

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About This Item

Empirical Formula (Hill Notation):
C18H16N2O3
CAS Number:
Molecular Weight:
308.33
Colour Index Number:
12156
Beilstein/REAXYS Number:
4510811
EC Number:
MDL number:
UNSPSC Code:
85151701
PubChem Substance ID:
E Number:
E121
NACRES:
NA.24

grade

analytical standard

Quality Level

assay

≥98.5% (HPLC)

shelf life

limited shelf life, expiry date on the label

technique(s)

HPLC: suitable
gas chromatography (GC): suitable

application(s)

cleaning products
cosmetics
food and beverages
personal care

format

neat

SMILES string

COc1ccc(OC)c(c1)N=Nc2c(O)ccc3ccccc23

InChI

1S/C18H16N2O3/c1-22-13-8-10-17(23-2)15(11-13)19-20-18-14-6-4-3-5-12(14)7-9-16(18)21/h3-11,21H,1-2H3

InChI key

GJUABKCEXOMRPQ-UHFFFAOYSA-N

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General description

Citrus red 2 is an artificial dye, which belongs to the mono-azo group of dyes. It may be used to color orange skins.

Application

Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support.

Packaging

Bottomless glass bottle. Contents are inside inserted fused cone.

Recommended products

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pictograms

Health hazard

signalword

Warning

hcodes

pcodes

Hazard Classifications

Carc. 2

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable


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Food Additive Toxicology (1994)
Li Hu et al.
Se pu = Chinese journal of chromatography, 30(8), 832-835 (2012-12-22)
An ultra performance liquid chromatography-tandem mass spectrometry (UPLC-MS/ MS) method was developed for the determination of citrus red 2 (CR2) in navel orange. The sample was extracted with acetonitrile, cleaned-up by an NH2 solid phase extraction cartridge. Then, the analyte

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