Solvent Red 24
- CAS No.
- 85-83-6
- Chemical Name:
- Solvent Red 24
- Synonyms
- SUDAN IV;SudanⅣ;SUDAN R;SUDAN 4;OIL RED;CI 26105;SUDAN RED IV;Oilsolublered;AKA501;sudanp
- CBNumber:
- CB5264478
- Molecular Formula:
- C24H20N4O
- Molecular Weight:
- 380.44
- MDL Number:
- MFCD00003893
- MOL File:
- 85-83-6.mol
| Product description | Number | Pack Size | Price |
| Sudan IV Dye content ≥80% | 198102 | 25g | $66.7 |
| Sudan IV Dye content ≥80% | 198102 | 100g | $140 |
| Sudan IV | O0100 | 25g | $26 |
| Sudan IV | O0100 | 100g | $64 |
| Sudan IV certified by the Biological Stain Commission, BioXtra | S4261 | 25g | $128 |
| More product size | |||
| Melting point | 199 °C (dec.)(lit.) |
|---|---|
| Boiling point | 260°C |
| Density | 1.1946 (rough estimate) |
| vapor pressure | 0Pa at 25℃ |
| refractive index | 1.6000 (estimate) |
| storage temp. | Flammables area |
| solubility | Insoluble in water; soluble in benzene, methanol, acetone, isopropanol; slightly soluble in ethanol |
| form | Powder/Solid |
| Colour Index | 26105 |
| pka | 13.52±0.50(Predicted) |
| color | Red Brown |
| Water Solubility | 23μg/L at 25℃ |
| ε(extinction coefficient) |
≥12000 at 356-360nm in toluene at 0.008g/L ≥26000 at 519-523nm in toluene at 0.008g/L |
| λmax | 520 nm, 357 nm |
| Merck | 14,8393 |
| BRN | 709018 |
| Stability | Stable. Incompatible with strong oxidizing agents. |
| Biological Applications | Detecting atherosclerosis; diapers; skin care products; shampoos; hair colors; stents; dental impression materials |
| InChIKey | RCTGMCJBQGBLKT-PAMTUDGESA-N |
| LogP | 6.66 |
| EWG's Food Scores | 2-5 |
| FDA UNII | I35E9QU96C |
| IARC | 3 (Vol. 8, Sup 7) 1987 |
| NIST Chemistry Reference | O-tolylazo-o-tolylazo-beta-naphthol(85-83-6) |
| EPA Substance Registry System | C.I. Solvent Red 24 (85-83-6) |
| UNSPSC Code | 85151701 |
| NACRES | NA.47 |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Warning | |||||||||
| Hazard statements | H317 | |||||||||
| Precautionary statements | P261-P272-P280-P302+P352-P333+P313-P362+P364 | |||||||||
| Hazard Codes | Xi,T | |||||||||
| Risk Statements | 36/38-45 | |||||||||
| Safety Statements | 26-36-53-45 | |||||||||
| WGK Germany | 3 | |||||||||
| RTECS | QL5775000 | |||||||||
| TSCA | Yes | |||||||||
| HazardClass | IRRITANT | |||||||||
| HS Code | 32129000 | |||||||||
| NFPA 704 |
|
Solvent Red 24 price More Price(21)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 198102 | Sudan IV Dye content ≥80% | 85-83-6 | 25g | $66.7 | 2025-07-31 | Buy |
| Sigma-Aldrich | 198102 | Sudan IV Dye content ≥80% | 85-83-6 | 100g | $140 | 2025-07-31 | Buy |
| TCI Chemical | O0100 | Sudan IV | 85-83-6 | 25g | $26 | 2025-07-31 | Buy |
| TCI Chemical | O0100 | Sudan IV | 85-83-6 | 100g | $64 | 2025-07-31 | Buy |
| Sigma-Aldrich | S4261 | Sudan IV certified by the Biological Stain Commission, BioXtra | 85-83-6 | 25g | $128 | 2025-07-31 | Buy |
Solvent Red 24 Chemical Properties,Uses,Production
Chemical Properties
dark red to brown crystals or powder
Uses
It has been used to promote wound healing. Biological stain. Dyes and metabolites, Environmental Testing.
Uses
Fat stain.
Uses
Solvent Red 24 has been used to promote wound healing and biological stain.
Preparation
2-Methyl-4-(o-tolyldiazenyl)benzenamine diazotization, and Naphthalen-2-ol coupling.
Definition
ChEBI: A bis(azo) compound that is 2-naphthol substituted at position 1 by a {2-methyl-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 protei bound lipids in paraffin sections.
General Description
Sudan IV is a hydrophobic azo dye. It stains triglycerides and imparts an intense red color. The dye does not stain lipid droplets or phospholipids.
Flammability and Explosibility
Not classified
Safety Profile
Questionable carcinogen with experimental tumorigenic data. Mutation data reported. When heated to decomposition it emits toxic fumes of NOx.
Purification Methods
Crystallise the dye from EtOH/water or acetone/water. [Beilstein 16 IV 249.]
Properties and Applications
red to blue light red. Red powder, resistance to 5% of hydrochloric acid and sodium carbonate solution. Insoluble in water, soluble in ethanol and acetone, soluble in benzene. In concentrated sulfuric acid to blue light green, dilution have red precipitation. Mainly used in acetate fiber, organic glass, ABS resin, rigid polyvinyl chloride (PVC) and so on the many kinds of plastic coloring, and can also be used to paint and ballpoint ink color, also can be used for polyester fiber colouring.
| Standard | Light Fastness | Heat-resistant(℃) | water | Sodium Carbonate(5%) | Hydrochloric acid(5%) | |
| Melting point | Stable | |||||
| ISO | Good | 184-185 | 120 | Insoluble | No change | No change |
Solvent Red 24 Preparation Products And Raw materials
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Shanghai Daken Advanced Materials Co.,Ltd | +86-2158073036 | info@dakenam.com | China | 13502 | 58 |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 | info@tianfuchem.com | China | 21614 | 55 |
| Shanghai Zheyan Biotech Co., Ltd. | 18017610038 | zheyansh@163.com | CHINA | 3619 | 58 |
| career henan chemical co | +86-0371-86658258 +8613203830695 | sales@coreychem.com | China | 29850 | 58 |
| Hubei Jusheng Technology Co.,Ltd. | 18871490254 | linda@hubeijusheng.com | CHINA | 28172 | 58 |
| Hubei xin bonus chemical co. LTD | 86-13657291602 | linda@hubeijusheng.com | CHINA | 22963 | 58 |
| Shanghai Standard Technology Co., Ltd. | 18502101150 | ft-sales@nature-standard.com | CHINA | 1923 | 58 |
| Winchem industrial co limited | +8613003762012 | info@win-chemical.com | China | 300 | 58 |
| Shenyang Simchoice Chemical Co.,Ltd | +86-024-23769576 +86-15040101888 | sales@simchoicechem.com | China | 254 | 58 |
| Tangshan Moneide Trading Co., Ltd. | +86-315-8309571 +8615633399667 | sales@moneidechem.com | China | 574 | 58 |
View Lastest Price from Solvent Red 24 manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
 |
2025-11-18 | Solvent Red 24
85-83-6
|
0.99 | RongNa Biotechnology Co.,Ltd | ||||
 |
2025-10-20 | Sudan IV
85-83-6
|
US $40.00 / mg | BS | 10g | TargetMol Chemicals Inc. | ||
 |
2023-02-24 | Sudan IV
85-83-6
|
US $0.00 / mg | 5mg | ≥95%(HPLC) | 10 g | Shanghai Standard Technology Co., Ltd. |
-
- Solvent Red 24
85-83-6
- 0.99
- RongNa Biotechnology Co.,Ltd
-
- Sudan IV
85-83-6
- US $40.00 / mg
- BS
- TargetMol Chemicals Inc.
-
- Sudan IV
85-83-6
- US $0.00 / mg
- ≥95%(HPLC)
- Shanghai Standard Technology Co., Ltd.
