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Merck
CN

103624

Sudan I

Dye content ≥95 %

Synonym(s):

1-Phenylazo-2-naphthol, Solvent Yellow 14

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About This Item

Linear Formula:
C6H5N=NC10H6OH
CAS Number:
842-07-9
Molecular Weight:
248.28
PubChem Substance ID:
24846615
UNSPSC Code:
12171500
Colour Index Number:
12055
NACRES:
NA.47
EC Number:
212-668-2
MDL number:
MFCD00003911

Key Documents

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Product Name

Sudan I, Dye content ≥95 %

InChI key

MRQIXHXHHPWVIL-UHFFFAOYSA-N

InChI

1S/C16H12N2O/c19-15-11-10-12-6-4-5-9-14(12)16(15)18-17-13-7-2-1-3-8-13/h1-11,19H

SMILES string

Oc1ccc2ccccc2c1N=Nc3ccccc3

form

powder

composition

Dye content, ≥95%

technique(s)

microbe id | staining: suitable

color

orange to very dark orange

pH

10.2 (26 °C)

mp

131-133 °C (lit.)

solubility

chloroform: 1 mg/mL, clear to very slightly hazy, orange

density

0.32 g/cm3 at 20 °C ((68 °F) - OECD Test Guideline 109)

ε (extinction coefficient)

≥30000 at 223-233 nm in ethanol at 0.01 g/L

εmax

≥6000 at 299-319 nm in ethanol at 0.01 g/L (2nd)

λmax

≥11000 at 461-491 nm in ethanol at 0.01 g/L

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

Quality Level

200

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Application

Sudan I is a lysochrome, a diazo-conjugate dye, used as an industrial dye, added to products such as waxes, oils, petrol, solvents and polishes. Sudan I is a category 3 carcinogen previously, now banned, used to color certain foodstuffs.

pictograms

Health hazardExclamation mark
GHS08,GHS07

signalword

Warning

Hazard Classifications

Aquatic Chronic 4 - Carc. 2 - Muta. 2 - Skin Sens. 1

Storage Class

11 - Combustible Solids

wgk

WGK 2

flash_point_f

>554.0 °F - Pensky-Martens closed cup

flash_point_c

> 290 °C - Pensky-Martens closed cup

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Certificates of Analysis (COA)

Lot/Batch Number
BCCN0908
BCCL1053
BCCL2216
BCCK9484
BCCG9275

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T Philip et al.
Journal of chromatography, 435(1), 113-126 (1988-01-01)
The adsorption and partition properties of several fatty acid esters of capsanthin, capsorubin, beta-cryptoxanthin, lutein, violaxanthin and beta-citraurin isolated from fruits were studied by normal-phase (silica) and reversed-phase (octadecylsilane) liquid chromatography using Sudan 1 as internal standard. The separation on
Michalina Oplatowska et al.
Analytical and bioanalytical chemistry, 401(4), 1411-1422 (2011-07-07)
Sudan dyes have been found to be added to chilli and chilli products for illegal colour enhancement purposes. Due to the possible carcinogenic effect, they are not authorized to be used in food in the European Union or the USA.
Myriam Coulet et al.
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 48 Suppl 1, S106-S111 (2010-02-02)
Sudan I is generally considered mutagenic based on various in vitro and in vivo tests and is carcinogenic in the rat. Dose-response modelling of the data for hepatocellular adenomas in male rats gave a BMDL(10) of 7.3mg/kg-bw/day. Sudan I is
Marie Stiborová et al.
Chemical research in toxicology, 26(2), 290-299 (2013-01-08)
Sudan I (1-phenylazo-2-hydroxynaphthol) is a suspected human carcinogen causing tumors in the livers and urinary bladders of rats, mice, and rabbits. Here, we investigated for the first time the influence of Sudan I exposure on the expression of several biotransformation
Xinying Ma et al.
Food chemistry, 138(2-3), 739-744 (2013-02-16)
This paper describes a novel electrochemical method for the determination of Sudan I in food samples based on the electrochemical catalytic activity of graphene modified glassy carbon electrode (GMGCE) and the enhancement effect of an anionic surfactant: sodium dodecyl sulphonate
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