85-84-7 Usage
Chemical Properties
Orange or red platelets. Insoluble in water; soluble in alcohol and oils.
Uses
1-Phenylazo-2-naphthylamine is an azo-dye and toxic agrochemical.
Preparation
Aniline diazo, and Naphthalen-2-amine?coupling.
Safety Profile
Moderately toxic by
ingestion and subcutaneous routes.
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 glacial acetic acid, acetic acid/water or ethanol. It forms Cu, Co and Ni salts. [Beilstein 16 H 369, 16 I 328, 16 II 193, 16 III 417, 16 IV 551.]
Properties and Applications
red light yellow. Light yellow powder. Soluble in ethanol for orange, insoluble in water. From ethanol to recrystallizate out in the melting point of 104 ℃ products. The strong sulfuric acid for blu-ray purple, diluted solution for red, and then have the orange precipitation. The dye alcohol solution with hydrochloric acid for red; Sodium hydroxide solution to join the same color. And C.I.Solvent yellow 5 the same chemical structure.
Check Digit Verification of cas no
The CAS Registry Mumber 85-84-7 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 4 respectively.
Calculate Digit Verification of CAS Registry Number 85-84:
(4*8)+(3*5)+(2*8)+(1*4)=67
67 % 10 = 7
So 85-84-7 is a valid CAS Registry Number.
InChI:InChI=1/C16H13N3/c17-15-11-10-12-6-4-5-9-14(12)16(15)19-18-13-7-2-1-3-8-13/h1-11H,17H2
85-84-7Relevant articles and documents
One-scale basicities of diaminobenzenes and diaminonaphthalenes: from aniline to proton sponge
Vlasenko, Marina P.,Ozeryanskii, Valery A.
supporting information, (2017/01/17)
Basicity constants, pKa, for a wide range of mono-protonated diaminobenzenes and diaminonaphthalenes, including dimethylamino derivatives were for the first time uniformly measured in 20% aqueous ethanol (29 compounds) and 80% aqueous dioxane (39 compounds) spanning from aniline to 1,8-bis(dimethylamino)naphthalene (‘proton sponge’). The dioxane system proved to be more versatile and because of better solubility of N-alkylated polyaminoarenes allowed to add to the same scale some superbasic bis(dialkylamino)-, tetrakis(dialkylamino)-, and hexakis(dialkylamino)naphthalenes, thus extending the scale for almost 10 pKa units, revealing possible limits of basicity changes in aromatic amines. The basicity of reference bases, pyridine and triethylamine, was also measured in these solvent systems. A group of N-alkylated compounds was found to be less basic in aqueous dioxane when compared with their NH2-analogs. This anomaly was not observed in aqueous ethanol. Other basicity trends and correlations between different basicity scales were also discussed. Copyright
