Sudan IV CAS 85-83-6 CI 26105 CI 258 CI Solvent Red 24 CI Solvent Red 24 8CI

Model: C24H20N4O
Place of Origin: Sichuan,China (Mainland)
Brand Name: MOSINTER
CAS No.: 85-83-6
Molecular formula: C24H20N4O
Molecular weight: 380.45
Density: 1.192g/cm3
Flashing point: 424.365°C
Boiling point: 618.845°C at 760 mmHg
Melting point: 199℃
Vapour pressure: 0 mmHg at 25°C
Name: Sudan IV
Alias: C.I. 26105


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Product Description

Payment & Shipping Terms Supply Capacity
Payment Terms:L/C, T/T, WUProduction Capacity:100 Ton/year
Min. Order:10 KilogramPacking:According to the...
Means of Transport:Ocean, Air, LandDelivery Date:within 7 days

Sudan IV (CAS: 85-83-6)





Red-brown powder

Melting point ℃


Boiling point ℃


Storage conditions

Amber   Vial, Refrigerator

Basic information

Sudan IV is a lysochrome (fat-soluble dye) diazo dye used for the staining of lipids, triglycerides and lipoproteins on frozen paraffinsections.It has the appearance of reddish brown crystals with melting point 199 °C and maximum absorption at 520(357) nm.Is the laboratory commonly used chemical reagents,toxicity of micro.Fat can be Sudan red Ⅳ dyed red.

Sudan IV is one of the dyes used for Sudan staining. Similar dyes include Oil Red O, Sudan III, and Sudan Black B. Staining is an important biochemical technique, offering the ability to visually qualify the presence of the fatty compound of interest without isolating it. For staining purposes Sudan IV can be made up in propylene glycol. 


Sudan IV mainly used in oil, water, soap, candles, rubber toys, plastic productsan .Sudan IV is also used in United Kingdom as a fuel dye to dye lower-taxed heating oil.

Matters need attention

Sudan IV have been classified as category 3 carcinogens by the International Agency for Research on Cancer.

Category: Indicator Tracer Agent

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