3-Amino-benzolsulfonsäure Chemische Eigenschaften,Einsatz,Produktion Methoden
R-Sätze Betriebsanweisung:
R20/21/22:Gesundheitsschädlich beim Einatmen,Verschlucken und Berührung mit der Haut.
S-Sätze Betriebsanweisung:
S23:Gas/Rauch/Dampf/Aerosol nicht einatmen(geeignete Bezeichnung(en) vom Hersteller anzugeben).
S28:Bei Berührung mit der Haut sofort abwaschen mit viel . . . (vom Hersteller anzugeben).
S25:Berührung mit den Augen vermeiden.
Chemische Eigenschaften
white powder
Verwenden
Metanilic acid was used in the synthesis of cytocompatible sulfonated polyanilines. It was used in fabrication of novel glucose biosensor having large active surface area and excellent conductivity. It undergoes microbial desulfonation to 3-aminophenol by Pseudomonas sp. strain S-313. It can be used to produce CN3O6(1-)*Cs(1+) and dicesium salt of N-nitrometanilic acid at temperature of 25°C.
Vorbereitung Methode
Metanilic acid can be obtained by sulfonation of aniline sulfate with oleum and boric acid at 20 – 50 ℃. The yield is 98%. For industrial production, however, nitrobenzene is sulfonated to m-nitrobenzenesulfonic acid, which is then reduced either with iron or catalytically with hydrogen. Crude 3-aminobenzenesulfonic acid can be used directly, either as a solution or dried, to obtain 3-aminophenol by alkali fusion. It is not sufficiently pure for use in dye manufacture, however. Therefore the crude solution is acidified; after filtration the product thus obtained is of satisfactory purity.
Allgemeine Beschreibung
White powder. Small colorless needles; toxic.
Air & Water Reaktionen
Water insoluble [Hawley].
Reaktivität anzeigen
Metanilic acid is an amino acid. Reacts weakly with both acids and bases.
Hazard
See aniline.
Brandgefahr
Flash point data for Metanilic acid are not available, however Metanilic acid is probably combustible.
läuterung methode
Crystallise the acid from water (as the hydrate), under CO2 in a semi-darkened room. The solution is photosensitive. Dry it over 90% H2SO4 in a vacuum desiccator. [Beilstein 14 H 688, 14 IV 2640.]
3-Amino-benzolsulfonsäure Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
cleaner LS
Natrium-3-(p-anilinophenylazo)benzolsulfonat
3-ACETYLAMINO-BENZENESULFONYL CHLORIDE
1-Amino-4-(2'-(4',6'-dichlor-s-triazin-2-yl)amino)phenylamino)9,10-dihydro-9,10-dioxoanthracen-2,4'-disulfonsaeure
Dinatrium-6,13-dichlor-3,10-bis(phenylamino)triphenodioxazin-2,9-disulfonat
Reactive Navy Blue Ker
Dinatrium-4-[[2,4-diamino-5-[(3-sulfonatophenyl)azo]phenyl]azo]-2-[[2,6-dihydroxy-3-[(4-nitrophenyl)azo]phenyl]azo]benzolsulfonat
Natrium-2,4-diamino-5-(2-hydroxy-5-nitrophenylazo)benzolsulfonat
Natrium-8-phenylamino-5-(4-(3-sulfonatophenylazo)-1-naphthylazo)naphthalinsulfonat
2-Aminobenzol-1,4-disulfonsure
Tracid Rubine 5bl
Benzoesure, 5-[(4-Aminophenyl)azo]-2-hydroxy-, Reaktionsprodukte mit 3-[(4-Amino-3-methoxyphenyl)azo]benzolsulfonsure und Kohlendichlorid, Natriumsalze
Reactive Orange 2
Trinatrium-7-[[4-chlor-6-[(3-sulfonatophenyl)amino]-1,3,5-triazin-2-yl]methylamino]-4-hydroxy-3-[(2-sulfonatophenyl)azo]naphthalin-2-sulfonat
Reactive Brilliant Orange K-R
REACTIVE BLUE 5
Acid Orange 116
Reactive Blue 49
Reactive Brilliant Orange K-7R
Dinatrium-8-(4-methylphenylamino)-5-(4-(3-sulfonatophenylazo)-1-naphthylazo)naphthalinsulfonat
3-Aminophenol
Trinatrium-5-[[4-[[4-[[4-[(4-amino-9,10-dihydro-9,10-dioxo-3-sulfonato-1-anthryl)amino]-2-sulfonatophenyl]amino]-6-(phenylamino)-1,3,5-triazin-2-yl]amino]phenyl]azo]salicylat
REACTIVE RED 198
1-Aminoanthrachinon
Reactive Blue 198
Tetranatrium-[μ-[[7,7'-(carbonyldiimino)bis[4-hydroxy-3-[(2-hydroxy-5-sulfophenyl)azo]naphthalin-2-sulfonato]](8-)]]dicuprat(4-)
Tetraammonium-[μ-[[5,5'-[carbonylbis[imino(2-hydroxy-5-sulfo-p-phenylen)azo]]bis[6-hydroxynaphthalin-2-sulfonato]](8-)]]dicuprat(4-)
