Solvent Red 24
Also known as: Sudan IV, Sudan 4, Scarlet Red, C.I. 26105, C.I. Solvent Red 24, Oil Red IV, Fat Ponceau R, Biebrich scarlet R fat soluble, Lipid Crimson, 1-((2-Methyl-4-((2-methylphenyl)azo)phenyl)azo)-2-naphthalenol, 1-(4-(o-Tolylazo)-o-tolylazo)-2-naphthol, 2-Naphthalenol, 1-[[2-methyl-4-[(2-methylphenyl)azo]phenyl]azo]-, Sudan R, AKA501, MFCD00003893
Solvent Red 24 (CAS 85-83-6) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C24H20N4O and a molecular weight of 380.442 g/mol. Key properties include a melting point of 199ºC, a boiling point of 618.8±55.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 424.4±20.8 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation and H319 — Causes serious eye irritation. It is listed by 1 supplier; request a quote for pricing. Record last updated Aug 21, 2026.
- CAS No.
- 85-83-6
- Jingsj CID
- J-47960-6
- Molecular Formula
- C24H20N4O
- Molecular Weight
- 380.442 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
Made to Order | - | - | CN China |
Physicochemical Properties
| Melting Point | 199ºC |
|---|---|
| Boiling Point | 618.8±55.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 424.4±20.8 °C |
| Exact Mass | 380.163696 |
| PSA | 69.67000 |
| LogP | 6.66 |
| Vapor Pressure | 0.0±1.9 mmHg at 25°C |
| Refractive Index | 1.645 |
| Additional Property | Insoluble in water; soluble in benzene, methanol, acetone, isopropanol; slightly soluble in ethanol |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
Activity & Biological Data
| Additional Information | [1]. Refat NA, et al. The induction of cytochrome P450 1A1 by sudan dyes. J Biochem Mol Toxicol. 2008 Mar-Apr;22(2):77-84. |
|---|
Customs & Trade Information
| HS Code | 2927000090 |
|---|---|
| Summary | 2927000090 other diazo-, azo- or azoxy-compounds。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Solvent Red 24?
The CAS number of Solvent Red 24 is 85-83-6.
What are the molecular formula and molecular weight of Solvent Red 24?
Solvent Red 24 has molecular formula C24H20N4O and molecular weight 380.442 g/mol.
Which suppliers offer Solvent Red 24?
1 supplier(s) listed; request a quote for pricing.
Is Solvent Red 24 hazardous?
Solvent Red 24 has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation.
What are the upstream and downstream products of Solvent Red 24?
For Solvent Red 24, Upstream Products: 2-Naphthol; Downstream Products: 1-Amino-2-naphthol, o-Toluidine, 2,5-Diaminotoluene.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Solvent Red 24 (CAS 85-83-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-47960-6 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.