| Identification | More | [Name]
Solvent Red 23 | [CAS]
85-86-9 | [Synonyms]
1-[4-(PHENYLAZO)PHENYLAZO]-2-NAPHTHOL
1-[[P-(PHENYLAZO)PHENYL]AZO]-2-NAPHTHOL
CERASIN RED
CI 26100
CI NO 26100
D AND C RED NO 17
FAT PONCEAU G
FAT SOLUBLE SUDAN
HERXHEIMER FAT STAIN
OIL RED
OIL RED AS
OIL RED O, B OR 3B
OIL RED O, B OR 3B, SCARLET B
SCARLET B
SOLVENT RED 23
SUDAN
SUDAN 3
SUDAN G
SUDAN III
SUDAN III STAIN | [EINECS(EC#)]
201-638-4 | [Molecular Formula]
C22H16N4O | [MDL Number]
MFCD00003905 | [Molecular Weight]
352.39 | [MOL File]
85-86-9.mol |
| Chemical Properties | Back Directory | [Appearance]
reddish brown powder | [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. ]
Amber Vial, Refrigerator | [solubility ]
Insoluble in water; soluble in benzene, chloroform; moderately soluble in acetone, ether, petroleum
ether; slightly soluble in ethanol, xylene | [Colour Index ]
26100 | [form ]
Powder | [pka]
13.45±0.50(Predicted) | [color ]
Red-brown | [Stability:]
Stable. Incompatible with strong oxidizing agents. | [λmax]
507 nm, 354 nm | [Merck ]
14,8884 | [BRN ]
2016384 | [Biological Applications]
Antiseptic; preventing prostate cancer; medical devices; dental impression materials | [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. | [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]
85-86-9(EPA Substance) |
| Hazard Information | Back Directory | [Chemical Properties]
reddish brown powder | [Uses]
Weakly acidic azo dye. Biological stain. | [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. | [Uses]
Dye. Biological stain. | [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. | [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. | [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
|
| [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.] |
| Safety Data | Back Directory | [Hazard Codes ]
Xi | [Risk Statements ]
R10:Flammable.
R20:Harmful by inhalation.
R36/38:Irritating to eyes and skin .
R36/37/38:Irritating to eyes, respiratory system and skin . | [Safety Statements ]
S22:Do not breathe dust .
S24/25:Avoid contact with skin and eyes .
S36:Wear suitable protective clothing .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice . | [WGK Germany ]
3
| [RTECS ]
QK4250000
| [TSCA ]
Yes | [HS Code ]
32129000 | [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. | [Toxicity]
cyt-ham:ovr 20 mmol/L/5H-C ENMUDM 1,27,79 |
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