199656

Sudan II

Dye content 90 %

• Synonym(s): 1-(2,4-Xylylazo)-2-naphthol, Solvent Orange 7
• Empirical Formula (Hill Notation): C₁₈H₁₆N₂O
• CAS Number: 3118-97-6
• Molecular Weight: 276.33
• Colour Index Number: 12140
• EC Number: 221-490-4
• MDL number: MFCD00003896
• UNSPSC Code: 12171500
• PubChem Substance ID: 24851931
• NACRES: NA.47

Properties

• form: powder
• composition: Dye content, 90%
• mp: 156-158 °C (lit.)
• solubility: chloroform: 10 mg/mL
• λmax: 493 nm; 604 nm (2nd)
• ε (extinction coefficient): ≥14000 at 491-497 nm in methanol at 0.005 g/L; ≥9000 at 419-425 nm in methanol at 0.005 g/L
• application(s): diagnostic assay manufacturing; hematology; histology
• storage temp.: room temp
• SMILES string: Cc1ccc(\N=N\c2c(O)ccc3ccccc23)c(C)c1
• InChI: 1S/C18H16N2O/c1-12-7-9-16(13(2)11-12)19-20-18-15-6-4-3-5-14(15)8-10-17(18)21/h3-11,21H,1-2H3/b20-19+
• InChI key: JBTHDAVBDKKSRW-FMQUCBEESA-N

Description

Application

Sudan II has been used to determine its presence in commercial spices such as hot chilli food samples (LC–ESI–MS/MS).

Biochem/physiol Actions

Sudan II is a fat-soluble synthetic colorant and it belongs to the group of azo compounds. It is classified by the international agency for research on cancer (IARC) as category 3 carcinogens because it has an ability to cause certain forms of liver and bladder cancer in animals.

Safety Information

• pictograms: GHS07
• signalword: Warning
• hcodes: H315,H317,H319
• pcodes: P261 - P264 - P272 - P280 - P302 + P352 - P305 + P351 + P338
• Hazard Classifications: Eye Irrit. 2 - Skin Irrit. 2 - Skin Sens. 1
• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 2
• flash_point_f: 448.9 °F - closed cup
• flash_point_c: 231.6 °C - closed cup
• ppe: dust mask type N95 (US), Eyeshields, Gloves