Name | 4-(4-Nitrophenylazo)-1-naphthol |
Synonyms | Magnezon II Magneson II P-NITROBENZENEAZO-A-NAPHTHOL 4'-NITROBENZENE-AZO-1-NAPHTHOL 4-(4-NITROPHENYLAZO)-1-NAPHTHOL 4-(4-Nitrophenylazo)-1-naphthol 4-(P-NITROPHENYLAZO)-1-NAPHTHOL 4-(4-Nitrophenylalzo)-1-naphthol 4-Nitrophenylazo-4'-(1-naphthol) 4-(P-NITROBENZENEAZO)-ALPHA-NAPHTHOL 4-[(E)-(4-Nitrophenyl)diazenyl]-1-naphthol 4-[(4-nitrophenyl)hydrazono]naphthalen-1(4H)-one (4E)-4-[(4-nitrophenyl)hydrazono]naphthalen-1(4H)-one |
CAS | 5290-62-0 |
EINECS | 226-129-4 |
InChI | InChI=1/C16H11N3O3/c20-16-10-9-15(13-3-1-2-4-14(13)16)18-17-11-5-7-12(8-6-11)19(21)22/h1-10,17H/b18-15+ |
Molecular Formula | C16H11N3O3 |
Molar Mass | 293.28 |
Density | 1.2211 (rough estimate) |
Melting Point | 270°C (dec.)(lit.) |
Boling Point | 435.13°C (rough estimate) |
Flash Point | 246.2°C |
Vapor Presure | 1.68E-09mmHg at 25°C |
Appearance | Powder |
Color | Red-brown |
BRN | 961660 |
pKa | 8.19±0.40(Predicted) |
Storage Condition | Store below +30°C. |
Stability | Stable. Incompatible with strong oxidizing agents, strong bases. |
Sensitive | Easily absorbing moisture |
Refractive Index | 1.6500 (estimate) |
MDL | MFCD00003975 |
Use | Reagents for detecting magnesium; used as adsorption indicators · |
Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R34 - Causes burns R11 - Highly Flammable |
Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S16 - Keep away from sources of ignition. |
UN IDs | 3236 |
WGK Germany | 3 |
RTECS | QL4510100 |
TSCA | Yes |
HS Code | 29270000 |
use | 4-(4-nitrophenylazo)-1-naphthol can be used to synthesize azobenzene polymers, especially methyl methacrylate azo polymers. |
Application | When the azobenzene polymer contains a flexible molecular chain (e. g., alkyl chain), the azobenzene molecule is connected to the molecular chain by covalent bonding, and the azobenzene molecule can exhibit liquid crystal properties. When azo polymers are irradiated with light of appropriate wavelength, such flexible materials will show light control properties, such as light-induced orientation, photochemical transformation and light-induced molecular cooperative motion. |
EPA chemical information | information provided by: ofmpub.epa.gov (external link) |