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Merck
CN

67195

Pigment Red 53

analytical standard

Synonym(s):

5-Chloro-2-[(2-hydroxy-1-naphthalenyl)azo]-4-methylbenzenesulfonic acid monosodium salt, Lake Red C

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About This Item

Empirical Formula (Hill Notation):
C17H12ClN2NaO4S
CAS Number:
2092-56-0
Molecular Weight:
398.80
UNSPSC Code:
85151701
NACRES:
NA.24
PubChem Substance ID:
329760449
EC Number:
218-248-5
Colour Index Number:
15585
MDL number:
MFCD00059530

Key Documents

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Product Name

Pigment Red 53, analytical standard

InChI

1S/C17H13ClN2O4S.Na/c1-10-8-14(16(9-13(10)18)25(22,23)24)19-20-17-12-5-3-2-4-11(12)6-7-15(17)21;/h2-9,21H,1H3,(H,22,23,24);/q;+1/p-1/b20-19+;

InChI key

LLELVHKMCSBMCX-RZLHGTIFSA-M

SMILES string

OC1=CC=C2C(C=CC=C2)=C1/N=N/C3=CC(C)=C(Cl)C=C3S(=O)([O-])=O.[Na+]

grade

analytical standard

assay

≥98.0% (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

Quality Level

100

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Application

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

Other Notes

Find a digital Reference Material for this product available on our online platform ChemisTwin® for NMR. You can use this digital equivalent on ChemisTwin® for your sample identity confirmation and compound quantification (with digital external standard). An NMR spectrum of this substance can be viewed and an online comparison against your sample can be performed with a few mouseclicks. Learn more here and start your free trial.

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
BCCM1802
BCCH9674
BCCD3569
BCBW7309

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C Westmoreland et al.
Mutation research, 281(3), 163-167 (1992-03-01)
The azo-compound, D and C Red No. 9 was assayed for genotoxicity in vivo using the rat micronucleus test and the rat ex vivo liver UDS assay. Uniformly negative results were obtained in both assays, even though large oral doses
A L Scher et al.
Journal - Association of Official Analytical Chemists, 71(5), 1007-1011 (1988-09-01)
A method is described for the determination of the intermediates in D&C Red No. 8 by reverse-phase liquid chromatography (LC). The pigment is dissolved in boiling 95% ethanol-water (1 + 1) and then precipitated. The filtrate is chromatographed by gradient
D&C Red No. 9 (CI Pigment Red 53:1).
IARC monographs on the evaluation of carcinogenic risks to humans, 57, 203-212 (1993-01-01)
M A Weinberger et al.
Journal of the National Cancer Institute, 75(4), 681-690 (1985-10-01)
A histopathologic review of F344 rat spleens from the National Toxicology Program-National Cancer Institute bioassays of barium salt of 5-chloro-2-(2-hydroxy-1-naphthalenyl)-azo-4-methylbenzenesulfonic acid [(D & C Red No. 9) CAS: 516-00-21] and aniline HCI (CAS: 142-04-1) was conducted to assess splenotoxic changes
D G Goodman et al.
Journal of the National Cancer Institute, 73(1), 265-273 (1984-07-01)
In six carcinogenicity bioassays, male and female F344 rats were fed diets containing aniline hydrochloride (CAS: 142-04-1; hydrochloride benzenamide), p-chloroaniline (CAS: 106-47-8), azobenzene (CAS: 103-33-3), o-toluidine hydrochloride (CAS: 636-21-5), dapsone (CAS: 80-08-0; 4,4'-sulfonyldianiline), or D & C red No. 9
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