Solvent Red 23
Solvent Red 23 Basic information
- Product Name:
- Solvent Red 23
- Synonyms:
-
- 1-[[P-(PHENYLAZO)PHENYL]AZO]-2-NAPHTHOL
- 1-[4-(PHENYLAZO)PHENYLAZO]-2-NAPHTHOL
- SCARLET B
- SUDAN 3
- SUDAN
- SUDAN RED
- SUDAN RED BK
- SUDAN G
- CAS:
- 85-86-9
- MF:
- C22H16N4O
- MW:
- 352.39
- EINECS:
- 201-638-4
- Product Categories:
-
- Azo
- Pharmaceuticals
- Organics
- Solvent Dyestuff
- Aromatics
- Intermediates & Fine Chemicals
- Mol File:
- 85-86-9.mol
Solvent Red 23 Chemical Properties
- Melting point:
- 199 °C (dec.)(lit.)
- Boiling point:
- 486.01°C (rough estimate)
- Density
- 1.2266 (rough estimate)
- refractive index
- 1.6620 (estimate)
- storage temp.
- Store at +5°C to +30°C.
- solubility
- Insoluble in water; soluble in benzene, chloroform; moderately soluble in acetone, ether, petroleum ether; slightly soluble in ethanol, xylene
- form
- Powder
- pka
- 13.45±0.50(Predicted)
- Colour Index
- 26100
- color
- Red-brown
- λmax
- 507 nm, 354 nm
- Merck
- 14,8884
- BRN
- 2016384
- Stability:
- Stable. Incompatible with strong oxidizing agents.
- Biological Applications
- Antiseptic; preventing prostate cancer; medical devices; dental impression materials
- InChIKey
- FHNINJWBTRXEBC-HXEHWPEMSA-N
- LogP
- 5.740 (est)
- CAS DataBase Reference
- 85-86-9(CAS DataBase Reference)
- IARC
- 3 (Vol. 8, Sup 7) 1987
- EPA Substance Registry System
- C.I. Solvent Red 23 (85-86-9)
Safety Information
- Hazard Codes
- Xi
- Risk Statements
- 10-20-36/38-36/37/38
- Safety Statements
- 22-24/25-36-26
- WGK Germany
- 3
- RTECS
- QK4250000
- TSCA
- Yes
- HS Code
- 32129000
- Toxicity
- cyt-ham:ovr 20 mmol/L/5H-C ENMUDM 1,27,79
MSDS
- Language:English Provider:Sudan Red
- Language:English Provider:SigmaAldrich
- Language:English Provider:ALFA
Solvent Red 23 Usage And Synthesis
Description
Solvent Red 23 is an oil-soluble red azo dye used in cosmetic products in Japan. Cases were reported in hairdressers, who also reacted to PPD and to paminoazobenzene. One case of contact dermatitis was reported in the metal industry.
Chemical Properties
reddish brown powder
Uses
Weakly acidic azo dye. Biological stain. Dyes and metabolites, Environmental Testing.
Preparation
4-(Phenyldiazenyl)benzenamine diazotization, and Naphthalen-2-ol coupling. Note: some goods by 4-(Phenyldiazenyl)benzenamine and 2-Methyl-4-(o-tolyldiazenyl)benzenamine mixture as diazo components and have to.
Definition
ChEBI: 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 l pids in paraffin sections.
Contact allergens
Solvent Red 23 is an oil-soluble red azo-dye used in cosmetic products in Japan. Cases were reported in hairdressers, who also reacted to PPD (the molecule is likely to be hydrolyzed into PPD) and to p-aminoazobenzene. One case of contact dermatitis was reported in the metal industry.
Safety Profile
Poison by intraperitoneal route. Moderately toxic by subcutaneous and intrapleural routes. Questionable carcinogen. Mutation data reported. When heated to decomposition it emits toxic fumes of NOx.
Purification Methods
Crystallise the dye from EtOH, EtOH/water or *benzene/absolute EtOH (1:1). [Beilstein 16 II 75, 16 III 148, 16 IV 248.]
Properties and Applications
yellow red to red. Soluble in ethanol and acetone, soluble in benzene. In concentrated sulfuric acid to blue light green, dilution for blue solution, and a red precipitation.
| Standard | Light Fastness | Heat-resistant(℃) | water | Sodium Carbonate(5%) | Hydrochloric acid(5%) | |
| Melting point | Stable | |||||
| ISO | Good | 195 |
70≥ 120
Sublimation |
Insoluble | No change | No change |
Solvent Red 23Supplier
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