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Supelco

Pigment Orange 5

analytical standard

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Synonym(s):
1-[(2,4-Dinitrophenyl)azo]-2-naphthol, Permanent red 2G
Empirical Formula (Hill Notation):
C16H10N4O5
CAS Number:
3468-63-1
Molecular Weight:
338.27
Colour Index Number:
12075
Beilstein:
964718
EC Number:
222-429-4
MDL number:
MFCD00059524
PubChem Substance ID:
329748741
NACRES:
NA.24

grade

analytical standard

Quality Level

100

Assay

≥98.0% (HPLC)

shelf life

limited shelf life, expiry date on the label

technique(s)

HPLC: suitable
gas chromatography (GC): suitable

mp

310-320 °C

application(s)

cleaning products
cosmetics
food and beverages
personal care

format

neat

SMILES string

Oc1ccc2ccccc2c1\N=N\c3ccc(cc3[N+]([O-])=O)[N+]([O-])=O

InChI

1S/C16H10N4O5/c21-15-8-5-10-3-1-2-4-12(10)16(15)18-17-13-7-6-11(19(22)23)9-14(13)20(24)25/h1-9,21H/b18-17+

InChI key

HBHZKFOUIUMKHV-ISLYRVAYSA-N

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General description

Pigment orange 5 is an azo pigment, which can be produced industrially by a diazotization and coupling sequence in which diazotized dinitroaniline is coupled into β-naphthol.

Packaging

Bottomless glass bottle. Contents are inside inserted fused cone.

Pictograms

Health hazard
GHS08

Signal Word

Warning

Hazard Statements

H341 - H351

Precautionary Statements

P281

Hazard Classifications

Carc. 2 - Muta. 2

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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Coatings Materials and Surface Coatings (2006)
P Møller et al.
Teratogenesis, carcinogenesis, and mutagenesis, 18(1), 9-16 (1998-05-20)
The induction of DNA damage by commonly used printing ink pigments, C.I. pigment orange 5 (C.I. 12075) and C.I. pigment yellow 12 (C.I. 21090), was investigated in freshly isolated rat hepatocytes with the comet assay. C.I. pigment yellow 12 is
Pigment Orange 5: crystal structure determination from a non-indexed X-ray powder diagram.
Schmidt U M, et al.
Zeitschrift fur Kristallographie, 222(1), 30-33 (2007)
A L Scher
Journal - Association of Official Analytical Chemists, 68(3), 474-477 (1985-05-01)
A method is described for the determination of the intermediates in D&C Orange No. 17 by reverse phase liquid chromatography. The pigment is dissolved in boiling dioxane and then precipitated. The filtrate is chromatographed by isocratic elution, which is followed

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