CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | 4-aminoazobenzene appears as odorless brownish-yellow needles with bluish coating, or an orange powder. (NTP, 1992) |
|---|---|
| Color/Form | Brownish-yellow needles with bluish cast |
| Boiling Point | greater than 680 °F at 760 mmHg (NTP, 1992) |
| Melting Point | 262 °F (NTP, 1992) |
| Solubility | less than 1 mg/mL at 66 °F (NTP, 1992) |
| Density | 1.05 (NTP, 1992) - Denser than water; will sink |
| Vapor Pressure | 0.0000014 [mmHg] |
| LogP | log Kow = 3.41 |
| Decomposition | When heated to decomp, emits toxic fumes of /nitrogen oxides/. |
| Dissociation Constants | pKa = 2.82 (conjugate acid) |
| Other Experimental Properties | It reduces alcoholic ammoniacal silver nitrate |
| Chemical Classes | Dyes -> Azo Dyes |
SAFETY INFORMATION
| Signal word | Danger |
|---|---|
| Pictogram(s) |
 Exclamation Mark Irritant GHS07  Health Hazard GHS08  Environment GHS09 |
| GHS Hazard Statements |
H302:Acute toxicity,oral H317:Sensitisation, Skin H350:Carcinogenicity H410:Hazardous to the aquatic environment, long-term hazard |
| Precautionary Statement Codes |
P202:Do not handle until all safety precautions have been read and understood. P273:Avoid release to the environment. P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P302+P352:IF ON SKIN: wash with plenty of soap and water. P308+P313:IF exposed or concerned: Get medical advice/attention. |
COMPUTED DESCRIPTORS
| Molecular Weight | 197.24 g/mol |
|---|---|
| XLogP3 | 3.4 |
| Hydrogen Bond Donor Count | 1 |
| Hydrogen Bond Acceptor Count | 3 |
| Rotatable Bond Count | 2 |
| Exact Mass | 197.095297364 g/mol |
| Monoisotopic Mass | 197.095297364 g/mol |
| Topological Polar Surface Area | 50.7 Ų |
| Heavy Atom Count | 15 |
| Formal Charge | 0 |
| Complexity | 201 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| Covalently-Bonded Unit Count | 1 |
| Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
description
4-aminoazobenzene appears as odorless brownish-yellow needles with bluish coating, or an orange powder. (NTP, 1992)