85-86-9 Usage
Description
Solvent Red 23 is an oil-soluble red azo dye that is used in cosmetic products in Japan and has been reported to cause contact dermatitis in hairdressers and the metal industry.
Uses
Used in Cosmetic Industry:
Solvent Red 23 is used as a colorant in cosmetic products for its oil solubility and red color.
Used in Biological Staining:
Solvent Red 23 is used as a biological stain to visualize and differentiate cellular structures.
Used in Environmental Testing:
Solvent Red 23 is used as a weakly acidic azo dye for dyes and metabolites analysis in 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.
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.
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.