DIPHENYLCARBAZONE;TIMTEC-BB SBB008715;S-DIPHENYLCARBAZONE;DiphenylCarbazoneGr;DIPHENYLCARBAZONE TS;1,5-DIPHENYLCARBAZONE;SYM-DIPHENYLCARBAZONE;Diphenylcarbazone, ACS;DIPHENYLCARBAZONE R. G.;s-DIPHENYLCARBAZONE REAGENT (ACS)
Appearance pink powder
Use : The use of i diphenylcarbazone for the determination of microgram amounts of lead
Uses of 1,5-Diphenylcarbazone: It is used to test cadmium, chromium, copper, iron, mercury, molybdenum, lead and zinc. And it is also used as analytical reagents, chromatography reagents, indicators and complex adsorption indicator
Molecular Weight: 149.19 Chemical Formula: (CH3)2NC6H4CHO
Appearance White crystalline powder
Melting Point 72 -75 C
Boiling Point 176 – 177 C
Stability : Stable under ordinary condition, Light sensitive.
p-Dimethylaminobenzaldehyde is used as an intermediate for dyes and pharmaceuticals.
Benzaldehyde(also called Benzenecarbonal) is the simplest representative of the aromatic aldehydes. It is a colorless liquid aldehyde with a characteristic almond odor. It boils at 180°C, is soluble in ethanol, but is insoluble in water. Benzaldehyde is formed by partial oxidation of benzyl alcohol and readily oxidized to benzoic acid and is converted to addition products by hydrocyanic acid or sodium bisulfite. It is also prepared by oxidation of toluene or benzyl chloride or by treating benzal chloride with an alkali, e.g., sodium hydroxide. It is used chiefly in the synthesis of other organic compounds, ranging from pharmaceuticals to plastic additives and benzaldehyde is an important intermediate for the processing of perfume and flavouring compounds and in the preparation of certain aniline dyes . It is the first step in the synthesis for fragrances. It undergoes simultaneous oxidation and reduction with alcoholic potassium hydroxide, giving potassium benzoate and benzyl alcohol. It is converted to benzoin with alcoholic potassium cyanide, with anhydrous sodium acetate and acetic anhydride, giving cinnamic acid. Compounds which do not have alpha-hydrogen atoms cannot form an enolate ion and do not undergo electrophilic alpha-substitution and aldol condensation. Aromatic aldehydes such as benzaldehyde and formaldehyde may undergo disproportionation in concentrated alkali (Cannizaro's reaction); one molecule of the aldehyde is reduced to the corresponding alcohol and another molecule is simultaneously oxidized to the salt of a carboxylic acid. The speed of the reaction depends on the substituents in the aromatic ring. Two different types of aldehydes (aromatic and aliphatic) can undergo crossing reaction to form fomaldehyde and aromatic alcohols.
Properties: Yellowish-brown needles from petr ether, mp 109-110°. Sol in 1000 parts water, 35 parts alcohol; also sol in hot alcohol, benzene, ether, carbon disulfide, caustic alkali solns, glacial acetic acid; slightly sol in cold petr ether.
CAS Name: 1-Nitroso-2-naphthalenol
Additional Names: nitroso-b-naphthol
Molecular Formula: C10H7NO2
Molecular Weight: 173.17
Percent Composition: C 69.36%, H 4.07%, N 8.09%, O 18.48%
Melting Point : 104-108 ºC
Water Solubility : Insuluble
Use: To prevent gum formation in gasoline; in analytical chemistry in the determination of cobalt (to separate it from nickel).
White to light tan or gray crystalline solid or off-white powder.
Store at RT.
: passes test
Light Sensitive & Hygroscopic
N-(1-Naphthyl)ethylenediamine dihydrochloride is a simple diamine reported as a coupling agent in spectrophotometric analysis of thiols, aromatic amines, sulfonamides, aminophenols, dinitroanilines, and chloroanilines. Compounds of interest can be diazotized and then coupled with N-(1-Naphthyl)ethylenediamine in a process called the Bratton-Marshall reaction, generating a diazo derivative of the original species which is then easily analyzed with spectrophotometric method
Thiomalic Acid is used as a brightening agent of metal plating. It is used as an intermediate for the synthesis of organic compounds especially as an corrosion inhibitor, soil fumigant, pharmaceuticals and electroplating agents.
The first chemical contrast of thiols and sulfides with alcohols and ethers is acidity which is important in organic reactions. Thiols are stronger acids than relevant alcohols and phenols. Thiolate conjugate bases are easily formed, and are excellent nucleophiles in SN2 reactions of alkyl halides and tosylates. The nucleophilicity of sulfur is much greater than that of oxygen, resulting in a number of useful electrophilic substitution reaction that are rare by oxygen. For example, sulfides form (with alkyl halides) ternary sulfonium salts, in the same alkylattion of tert-amines quaternary ammonium salts, whereas ternary oxonium salts are prepared only under extream conditions. Without exception, sulfoxides, sulfinate salts and sulfite anion also alkylate on sulfur, despite of the partial negative formal charge on oxygen and partial positive charge on sulfur. The second character is the oxidation states of sulfur. Oxygen has only two oxidation states, whereas sulfur covers from –2 to +6 as follows: