Alpha naphthylamine

Chemical Reactivity - Reactivity with Water No reaction Reactivity with Common Materials No reactions Stability During Transport Stable Neutralizing Agents for Acids and Caustics Not pertinent Polymerization Polymerization is accelerated by heat and exposure to oxygen, as well as the presence of contamination such as iron rust. Iron surfaces should be treated with an appropriate reducing agent such as sodium nitrate, before being placed into isoprene service Inhibitor of Polymerization Tertiary butyl catechol (0.06 %). Di-n-butylamine, phenyl-beta-naphthylamine andphenyl-alpha-naphthylamine are also recommended. 

Synonyms AI3-00085 AIDS-18991 1-Aminonaphthalene a-Aminonaphthalene BRN 0386133 CCRIS 423 C.I. 37265 C.I. azoic diazo component 114 EINECS 205-138-7 Fast garnet B base Fast garnet base B Naphthalen-1-amine 1-Naphthalenamine Naphthalidam Naphthalidine a-Naphthylamine alpha-Naphthylamine NSC 4154 RCRA waste number U167 UN 2077. 

Naphthol-TV-methylcarbamate, see Carbaryl 6-Naphthylamine, see 2-Naphthylamine a-Naphthylamine, see l-Naphthylamine alpha-Naphthylamine, see l-Naphthylamine p-Naphthylamine, see 2-Naphthylamine... 

Graveel JG, Sommers LE, Nelson DW. 1986. Decomposition of benzidine, alpha-naphthylamine, and p-toluidine in soils. J Environ Qual 15 53-59. 

Seventeen priority pollutant compounds can be classified as polynuclear aromatics (PNA). These compounds consist of two or more benzene rings that share a pair of carbon atoms. They are all derived from coal tar, with naphthalene being the largest constituent. Naphthalene derivatives such as alpha-naphthylamine and alpha-naphthol are used in some pesticide processes therefore, naphthalene is by far the most prevalent PNA priority pollutant in the industry. Acenaphthene, anthracene, fluorene, fluoranthene, and phenathrene are found as raw material impurities. Acenaphthene is found in one pesticide process as a raw material. The remaining ten PNAs are not suspected to be present in pesticide processes. 

A)Double-base, solventless proplnt is prepd by blending, under water a mixt of NC 65, DEGDN 28, w-insol soap (Ca oleate 70, Mg oleate 18 St Ca stearate 12%) 5 and a product obtd by treating oleic (or stearic) acid with alpha-naphthylamine Sc urea 2%. The resulting slurry is centrifuged (to remove all but 30% of w)... 

Reagent for Nitrites in Water.— An illustration of such a reaction is one which is the basis of the colorimetric determination of nitrites in water. When sulphanilic acid, para-amino benzene sulphonic acid, is diazotized and the resulting diazo compound treated with alpha-naphthylamine the benzene ring and the naphthalene ring become coupled as an azo compound which is red in color. 

When a small amount of nitrites is present in water and the reagent of mixed sulphanilic acid and alpha-naphthylamine is added in the presence of sulphuric acid, the acid first reacts with the nitrites forming nitrous acid. The above diazo reaction and the coupling with the naphthylamine then take place slowly with the production of a red color in the solution. The depth of the color thus produced, on comparison with the color obtained with standard nitrite solutions, gives the means for calculating the amount of nitrites in the original water. 

Fast Red B, Bordeaux B.—One more example of an azo dye derived from naphthalene may be given in which naphthylamine is diazotized and coupled as an azo compound with a naphthol sulphonic acid. The compound 2-naphthol 3-6-di-sulphonic acid is a dyestuff intermediate known as R-salt (red salt) because it is used in making red dyes. When alpha-naphthylamine is diazotized and coupled with R-salt the resulting azo dye is known as fast red B or Bordeaux B. Its constitution is... 

Case, R. A., Hosker, M. E., Me, D. D., and Pearson, J. T. (1954). Tumours of the urinary bladder in workmen engaged in the manufacture and use of certain dyestuff intermediates in the British chemical industry. I. The role of aniline, benzidine, alpha-naphthylamine, and beta-naphthylamine. Br J Ind Med 11, 75-104. 

Sodium petroleum sulphonates or calcium dinonylnaphthalene sulphonate can be applied as rust preventing additives and the catalytic effect of copper can be retarded by 2-mercaptobenzothiazole. Depending on operating temperature, various oxidation inhibitors may be used. Thus, 2,6-di-fert-butyl-4-methyl phenol is an effective inhibitor below 120 C while phenyl-alpha-naphthylamine is widely used in greases at low temperatures and above 120" C and phenothiazine is effective especially at temperatures above 150" C. Special compounds used as oxidation inhibitors for greases in the food industry are dilauryl thiodipropionate or citric acid. 

When synthetic oxidation inhibitors such as phenyl-alpha-naphthylamine were used, the lengths of the induction periods were proportional to the inhibitor concentration. The effect of inhibitors (i.e., the length of the induction period) was greatest for those samples which had been most severely extracted by the furfural, namely, those with the fewest aromatics, a good augury for this era of low aromatic base stocks. 

OTHER COMMENTS alpha-Naphthylamine is an extremely toxic chemical in any of its physical forms, such as flake, dust, liquid, or vapor may be fatal if absorbed through skin, if inhaled, or swallowed personnel should be completely protected against physical contact with this chemical this chemical has been used in the manufacture of dyes and toning prints made with cerium salts the hydrochloride with sulfanilic acid is a reagent for nitrate. 

Various airborne contaminants in Appendix A of 1926.55 do not list PELs but instead send you to another portion of the construction regulations. These contaminants are called OSHA specific contaminants. Examples are Asbestos ( 1926.1101), alpha-Naphthylamine ( 1926.1104), and lead ( 1926.62). There are approximately 27 of these substances. These OSHA specific contaminants have their own PELs and specific requirements. 

Cycloaliphatic epoxy resins in the manufacture of electrical insulators Phenyl-alpha-naphthylamine in industrial greases Reactive dyes in textile industry 2,4,6-tris-(Dimethylaminomethyl)phenol in epoxy paints Industrial enzymes... 

The OSHA regulation 29 CFR 1910.1003 pertains to solid or liquid mixtures containing less than 0.1 percent by weight or volume of 4-nitroWphenyl, methyl chloromethyl ether, bis-chloromethyl ether, beta-naphthylamine, benzidine, or 4-aminodiphenyl, and solid or liquid mixtures containing less than 1.0 percent by weight or volume of alpha-naphthylamine, 3,3 -dichlorobenzidine (and its salts), ethyleneimine, beta-propiolactone, 2-acetyIaminofluorene, 4-dimethylaminoazobenzene, or N-nitrosodimethylamine. 

Dry sweeping and dry mopping are prohibited for 4-nitrobiphenyl, alpha-naphthylamine, 3,3 -dichlorobenzidine (and its salts), beta-naphthylamine, benzidine, 4-aminodiphenyl, 2-acetylaminofluorene, 4-dimethylaminoazobenzene, and N-nitrosodimethylamine. 

Employees exposed to 4-nitrobiphenyl alpha-naphthylamine 3,3 -dichloroben-zidine (and its salts) beta-naphthylamine benzidine 4-aminodiphenyl 2-acetylaminofluorene 4-dimethylaminoazobenzene and N-nitrosodimethylamine shall be required to wash hands, forearms, face, and neck upon each exit from the regulated areas, close to the point of exit, and before engaging in other activities. 

---