Name | Sudan II |
Synonyms | Sudan X CI 12140 Sudan II C.I. 12140 FAT PONCEAU CI NO 12140 sudanorangerpa sudanscarlet6g Solvent Orange 7 Sudan scarlet 6g waxakolvermilion waxakolvermilionl Solvent Orange 7 Waxakol vermilion L CALCO OIL SCARLET BL C.I. Solvent Orange 7 CALCO OIL SCARLET ZBL sudan ii (C.I. 12140) C.I. Solvent Orange 7 (8CI) 1-[2,4-XYLYLAZO]-2-NAPHTHOL 1-(2,4-XYLIDYLAZO)-2-NAPHTHOL 1-(2,4-Dimethylphenylazo)-2-naphthol 1-[(E)-(2,4-Dimethylphenyl)diazenyl]-2-naphthol 1-[(2,4-dimethylphenyl)hydrazono]naphthalen-2(1H)-one (1E)-1-[(2,4-dimethylphenyl)hydrazono]naphthalen-2(1H)-one |
CAS | 3118-97-6 |
EINECS | 221-490-4 |
InChI | InChI=1/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/h3-11,19H,1-2H3/b20-18+ |
Molecular Formula | C18H16N2O |
Molar Mass | 276.33 |
Density | 1.1318 (rough estimate) |
Melting Point | 156-158°C(lit.) |
Boling Point | 419.24°C (rough estimate) |
Flash Point | 213.6°C |
Water Solubility | 54.45μg/L at 25℃ |
Solubility | Insoluble in water, soluble in methanol, ethanol, DMSO and other organic solvents |
Vapor Presure | 0Pa at 25℃ |
Appearance | Brown red crystal |
Color | Red to orange-brownish |
pKa | 13.52±0.50(Predicted) |
Storage Condition | Hygroscopic, Refrigerator, Under inert atmosphere |
Stability | Hygroscopic |
Refractive Index | 1.5800 (estimate) |
MDL | MFCD00003896 |
Physical and Chemical Properties | Brown Red Crystal, soluble in methanol, ethanol, DMSO and other organic solvents, derived from synthetic dyes. |
Hazard Symbols | Xi - Irritant |
Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S37/39 - Wear suitable gloves and eye/face protection S24/25 - Avoid contact with skin and eyes. |
WGK Germany | 3 |
RTECS | QL5850000 |
TSCA | Yes |
HS Code | 32129000 |
color index | 12140 |
LogP | 6.6 |
(IARC) carcinogen classification | 3 (Vol. 8, Sup 7) 1987 |
EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
biological activity | Sudan II (Sudan Red II, Solvent Orange 7, Color Index No: 12140, C.I. 12140) is a hemolytic pigment (fat-soluble dye) azo dye, which is used to dye triglycerides in frozen sections and some protein-bound lipids and lipoproteins on paraffin sections. |
use | Sudan red ii can be used as fungicide and dye. Biological staining agents, such as fat staining of central nervous tissue. |
category | toxic substances |
flammability hazard characteristics | combustible, decomposition of toxic nitrogen oxide gas during combustion |
storage and transportation characteristics | warehouse low temperature, ventilation, drying |
fire extinguishing agent | water, carbon dioxide, dry powder, sand |
toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |