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SUDAN III

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SUDAN III
Molecular structure
Chemical Product

SUDAN III

Cat. NoKC.1910352 CategoryDyes & Indicators Molecular FormulaC22H16N4O CAS85-86-9 Molecular Weight352.4 g/mol
Package 25GM
Safety & Hazards (GHS) Danger
Corrosive Corrosive Irritant Irritant

⚠️ For information only; not a substitute for the official Safety Data Sheet (SDS).

Sudan III is a bis(azo) compound that is 2-naphthol substituted at position 1 by a 4-{[(2-methylphenyl)diazenyl]phenyl}diazenyl group. A fat-soluble dye predominantly used for demonstrating triglycerides in frozen sections, but which may also stain some protein bound lipids in paraffin sections. It has a role as a carcinogenic agent, a fluorochrome and a histological dye. It is a member of azobenzenes, a member of naphthols and a bis(azo) compound. It is functionally related to a 2-naphthol.

  • Used as a biological stain; [Merck Index]
  • Substance listed with specific concentration in tattoo ink and/or permanent make up according to EU Commission Regulation 2020/2081. The concentration limit (by weight) is 0.1%.
Physical DescriptionBrown and green metallic solid; [Merck Index] Red powder; [MSDSonline]
IUPAC Name1-[(4-phenyldiazenylphenyl)diazenyl]naphthalen-2-ol
Molecular FormulaC22H16N4O
Molecular Weight352.4 g/mol
CAS85-86-9
SMILESC1=CC=C(C=C1)N=NC2=CC=C(C=C2)N=NC3=C(C=CC4=CC=CC=C43)O
InChIKeyFHNINJWBTRXEBC-UHFFFAOYSA-N
Catalog NoKC.1910352
Pack sizes25GM
  • H315 Causes skin irritation
  • H318 Causes serious eye damage

⚠️ For information only; not a substitute for the official SDS.

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