| Chemical Abstract Number (CAS #) |
60093
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| Synonyms | Aminoazobenzene |
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Aniline, p-(phenylazo)- | 4-Phenylazoaniline |
| Molecular Formula | C12H11N3 |
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| Use | IN DYES (CHRYSOIDINE, INDULINE, SOLID YELLOW & ACID YELLOW);
INSECTICIDES
USED AS DYE FOR LACQUERS, VARNISHES, WAX PRODUCTS, OIL STAINS &
STYRENE RESINS & AS INTERMEDIATE IN MFR OF ACID YELLOW, DIAZO DYES &
INDULINES.
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| Apparent Color | BROWNISH-YELLOW NEEDLES WITH BLUISH CAST; ORANGE
MONOCLINIC NEEDLES FROM ALCOHOL; Yellow to tan crystals
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| Boiling Point | ABOVE 360 DEG C
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| Melting Point | 128 DEG C
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| Molecular Weight | 197.23
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| Environmental Impact | 4-Aminoazobenzene may be released to the environment in wastewater during it's
production and use as a dye and as a chemical intermediate. If released on land,
4-aminoazobenzene should bind strongly to soil and undergo soil- or clay-catalyzed oxidation and
possibly biodegrade. If released in water, it should bind strongly to sediment and undergo soil- or
clay-catalyzed oxidation, photolyze, or biodegrade. It should not bioconcentrate appreciably in
aquatic organisms. However, because of the lack of experimental data, the fate of
4-aminoazobenzene in natural waters is unknown. In the atmosphere, 4-aminoazobenzene should
exist primarily adsorbed to particulate matter and in aerosols and be subject to gravitational
settling. Vapor phase 4-aminoazobenzene would degrade by reacting with photochemically
produced hydroxyl radicals (half-life 5.8 hr). Human exposure is primarily in the workplace via
dermal contact.
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| Environmental Fate | TERRESTRIAL FATE: If released on land, 4-aminoazobenzene should adsorb
moderately to the soil and it is likely that it will undergo soil- or clay-catalyzed oxidation . It
may also biodegrade, with sufficient acclimation. No studies of degradation in soil samples were
available.
AQUATIC FATE: The fate of 4-aminoazobenzene in natural waters is unknown. It should
adsorb strongly to sediment and undergo soil- or clay-catalyzed oxidation , photolyze, or
biodegrade. Experimental data in environmental systems, however, are lacking.
ATMOSPHERIC FATE: In the atmosphere, 4-aminoazobenzene would exist primarily adsorbed
to particulate matter and in aerosols. Vapor phase 4-aminoazobenzene would degrade by reacting
with photochemically produced hydroxyl radicals (half-life 5.8 hr).
EFFL: In a comprehensive survey of wastewater from 4000 industrial and publicly owned
treatment works (POTWs) sponsored by the Effluent Guidelines Division of the U.S. EPA, 522.7
ppb of 4-aminoazobenzene was identified in a discharge of the organics and plastics industry .
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