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Sudan III;Solvent Red 23


  • Brand : BIOFRON

  • Catalogue Number : BD-D1229

  • Specification : 98%(HPLC)

  • CAS number : 85-86-9

  • Formula : C22H16N4O

  • Molecular Weight : 352.39

  • PUBCHEM ID : 62331

  • Volume : 20MG

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Catalogue Number


Analysis Method






Molecular Weight



Red brown powder

Botanical Source

Structure Type


Standards;Natural Pytochemical;API




2-Naphthalenol, 1-[(E)-2-[4-[(Z)-2-phenyldiazenyl]phenyl]diazenyl]-/fatredr/D & C Red No. 17/redzh/Oil Red (VAN)/1-[(E)-{4-[(Z)-Phenyldiazenyl]phenyl}diazenyl]-2-naphthol/Tony Red/AKA225/Tetrazobenzene-b-naphthol/OIL RED/Tetrazobenzene-β-naphthol/Sudan Red III/Oil Scarlet (VAN)/1-[(E)-{4-[(Z)-phenyldiazenyl]phenyl}diazenyl]naphthalen-2-ol/C.I. Solvent Red 23/SUDAN 3/RED 17/C.I. Solvent Red 23 (8CI)/Oil Scarlet/Sudan III/SUDAN/SUDAN G/c.i.23




1.2±0.1 g/cm3


Flash Point

398.1±15.2 °C

Boiling Point

584.6±35.0 °C at 760 mmHg

Melting Point

199 °C (dec.)(lit.)


InChl Key

WGK Germany


HS Code Reference


Personal Projective Equipment

Correct Usage

For Reference Standard and R&D, Not for Human Use Directly.

Meta Tag

provides coniferyl ferulate(CAS#:85-86-9) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. Articles of coniferyl ferulate are included as well.>> amp version: coniferyl ferulate

No Technical Documents Available For This Product.




Non-destructive, simple and fast techniques for identifying authentic palm oil and those adulterated with Sudan dyes using portable NIR spectroscopy would be very beneficial to West Africa countries and the world at large. In this study, a portable NIR spectroscopy coupled with multivariate models were developed for detecting palm oil adulteration. A total of 520 samples of palm oil were used comprising; 40 authentic samples together with 480 adulterated samples containing Sudan dyes (I, II, III, IV of 120 samples each). Multiplicative scatter correction (MSC) preprocessing technique plus Principal component analysis (PCA) was used to extract relevant spectral information which gave visible cluster trends for authentic samples and adulterated ones. The performance of Linear discriminant analysis (LDA) and Support vector machine (SVM) were compared, and SVM showed superiority over LDA. The optimised results by cross-validation revealed that MSC-PCA + SVM gave an identification rate above 95% for both calibration and prediction sets. The overall results show that portable NIR spectroscopy together with MSC-PCA + SVM model could be used successfully to identify authentic palm oils from adulterated ones. This would be useful for quality control officers and consumers to manage and control Sudan dyes adulteration in red palm oil.


Palm oil; linear discriminant analysis; portable NIR spectroscopy; quality control; support vector machine


Rapid and nondestructive fraud detection of palm oil adulteration with Sudan dyes using portable NIR spectroscopic techniques.


Teye E1, Elliott C2, Sam-Amoah LK1, Mingle C3.

Publish date

2019 Nov




We investigated the solubilization behavior of the hydrocarbon surfactant lithium dodecyl sulfate (LiDS) and the fluorocarbon surfactant lithium 1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,8-heptadecafluoro-1-octanesulfonate (LiFOS) in an aqueous solution to determine the controlled release mechanism of solubilizate. The LiDS system solubilized Sudan III, a hydrocarbon compound, whereas the LiFOS system did not, because of the immiscibility of the hydrocarbon and fluorocarbon compounds. The solubilization ability of the LiDS and LiFOS mixtures gradually decreased with increasing LiFOS bulk composition because the micelles mainly composed of LiDS transformed into micelles mainly composed of LiFOS. Furthermore, Sudan III solubilized in the aqueous LiDS was deposited when an aqueous LiFOS was added. The difference in the solubilization behavior between LiDS and LiFOS enabled the controlled release of the solubilizate.


controlled release; fluorocarbon surfactant; hydrocarbon surfactant; solubilization


Effect of Hydrophobic Chains on Solubilization of Hydrocarbon and Fluorocarbon Surfactant Mixtures in Aqueous Solution.


Takata Y1, Ohtsuka Y1, Ashida T1.

Publish date

2019 Sep 4




Different dyes and a colored vitamin (riboflavin) were used to better understand the underlying drug release mechanisms in poly(lactic-co-glycolic acid) (PLGA)-based implants. The latter were prepared by hot melt extrusion (HME) or formed in-situ, upon solvent exchange when injecting a PLGA solution in N-methyl-pyrrolidone (NMP) into phosphate buffer pH 7.4. Methylene blue was used as water-soluble dye to stain the release medium, riboflavin as a yellow, water-soluble “model drug”, and Sudan-III-red as poorly water-soluble dye, incorporated in the implant. In the case of pre-formed HME implants, the “orchestrating” role of polymer swelling for the control of drug release could be visualized: At early time points, only limited amounts of water penetrate into the system, insufficient for noteworthy drug dissolution and diffusion. However, bulk erosion starts, and once a critical polymer molecular weight threshold value is reached, substantial implant swelling sets on: Large amounts of water come in and allow for significant drug dissolution and diffusion. In the case of in-situ forming implants, the importance of the composition of the liquid formulation for the resulting inner implant structure could be visualized. The latter affects the rate and extent at which water penetrates into the system and, thus, the resulting drug release rate.

Copyright © 2019 Elsevier B.V. All rights reserved.


Diffusion; Drug release mechanism; Implant; PLGA; Swelling


Coloring of PLGA implants to better understand the underlying drug release mechanisms.


Bode C1, Kranz H2, Siepmann F1, Siepmann J3.

Publish date

2019 Oct 5

Description :

Sudan III is a lysochrome (fat-soluble dye) diazo dye.