Molekula
Sudan IV (C.I.26105)
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Sudan IV (C.I.26105) is a synthetic azo dye used primarily in research and industrial applications for staining lipids and fats in microscopy. It is also used in the detection of oils and fats in food and biological samples. Available in powder form, it has a molecular weight of 380.44 g/mol, a molecular formula of C24H20N4O, and a CAS number of 85-83-6. Store at ambient temperatures. Warning signal word applies due to potential health hazards. Molekula supplies Sudan IV from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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100 g — £68.20 per pack ex VAT · £81.84 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Dark red powder |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 289 °C |
| Acidity | Base |
Identification
| Property | Value |
|---|---|
| SKU | 64453001 |
| CAS Number | 85-83-6 |
| IUPAC Name | 1-[[2-methyl-4-[(2-methylphenyl)diazenyl]phenyl]diazenyl]naphthalen-2-ol |
| EC Number | 201-635-8 |
| Molecular Formula | C24H20N4O |
| Molecular Weight | 380.44 |
| Exact Mass | 380.1637 |
| SMILES | CC1=CC=CC=C1N=NC2=CC(=C(C=C2)N=NC3=C(C=CC4=CC=CC=C43)O)C |
| InChIKey | RCTGMCJBQGBLKT-UHFFFAOYSA-N |
| InChI | InChI=1S/C24H20N4O/c1-16-7-3-6-10-21(16)26-25-19-12-13-22(17(2)15-19)27-28-24-20-9-5-4-8-18(20)11-14-23(24)29/h3-15,29H,1-2H3 |
| PubChem CID | 62330 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| Tariff Code | 3204190090 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H317 May cause an allergic skin reaction
- H319 Causes serious eye irritation
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P308+313 IF exposed or concerned: Get medical advice/attention
- P333+313 IF skin irritation or a rash occurs: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- C.I. Solvent Red 24
- Ceres Red BB
- Fat Ponceau R
- Lacquer Red VS
- Lipid crimson
- Scarlet red
- Scharlachrot
- Solvent red 24
- Sudan IV
- Waxoline Red OM
Frequently asked questions
What is Sudan IV used for?
Sudan IV is primarily used as a dye in oil, grease, and wax products, and as a histological stain for lipids in biological tissues.
What is the chemical formula and molecular weight of Sudan IV?
The formula is C24H20N4O with a molecular weight of 380.44 g/mol.
How should Sudan IV be stored?
Sudan IV should be stored at ambient temperature, away from light and moisture.
What grade of Sudan IV does Molekula supply?
Molekula supplies Sudan IV in analytical grade.
Can Molekula supply Sudan IV in bulk?
Yes, Molekula can supply Sudan IV in bulk quantities; please contact our sales team for details.
What documentation comes with a Sudan IV order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the shipment.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.