85-86-9 Usage
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.
Uses
Different sources of media describe the Uses of 85-86-9 differently. You can refer to the following data:
1. Weakly acidic azo dye. Biological stain.
2. Dye. Biological stain.
3. Weakly acidic azo dye. Biological stain. Dyes and metabolites, Environmental Testing.
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.
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.
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.
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
Standard
Light Fastness
Melting point
Stable
ISO
Good
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.]
Check Digit Verification of cas no
The CAS Registry Mumber 85-86-9 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 8 and 5 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 85-86:
(4*8)+(3*5)+(2*8)+(1*6)=69
69 % 10 = 9
So 85-86-9 is a valid CAS Registry Number.
InChI:InChI=1/C22H16N4O/c27-21-15-10-16-6-4-5-9-20(16)22(21)26-25-19-13-11-18(12-14-19)24-23-17-7-2-1-3-8-17/h1-15,27H/b24-23-,26-25+
85-86-9Relevant articles and documents
Chemical and electrochemical synthesis, local atomic structure, and properties of copper(II), cobalt(II), and nickel(II) complexes with azo compounds containing an additional azo group in the para or ortho position of the amine fragment
Burlov,Mashchenko,Vlasenko,Garnovskaya,Zubavichus, Ya. V.,Levchenkov,Kurinnaya, Yu. S.
, p. 2338 - 2347 (2015)
New copper(II), cobalt(II), and nickel(II) complexes with 1-[4-(phenydiazenyl)phenyldiazenyl]-naphthalen-2-ol and 1-[4-methyl-2-(4-methylphenyldiazenyl)phenyldiazenyl]naphthalen-2-ol have been synthesized by chemical and electrochemical methods and characterized by IR, 1H NMR, and X-ray absorption spectroscopy, as well as by magnetochemistry and quantum chemical calculations. Coordination of the nitrogen atom in the additional azo group to the metal ion is determined by its position (ortho or para) and metal nature.
