Pigment Orange 5
Synonym(s):1-[(2,4-Dinitrophenyl)azo]-2-naphthol;Permanent red 2G
- CAS NO.：3468-63-1
- Empirical Formula: C16H10N4O5
- Molecular Weight: 338.27
- MDL number: MFCD00059524
- EINECS: 222-429-4
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:21:46
What is Pigment Orange 5?
The Uses of Pigment Orange 5
Permanent Orange (cas# 3468-63-1) is a useful research chemical. Dyes and metabolites, Environmental Testing.
General Description
Pigment orange 5 is an azo pigment, which can be produced industrially by a diazotization and coupling sequence in which diazotized dinitroaniline is coupled into β-naphthol.
Properties and Applications
|
TEST ITEMS |
SPECIFICATION |
|
APPEARANCE |
ORANGE POWDER |
|
SHADE |
YELLOWISH |
|
HEAT RESISTANCE |
140 °C min |
|
LIGHT FASTNESS |
7 |
|
ACID RESISTANCE |
5 |
|
ALKALI RESISTANCE |
5 |
|
FASTNESS TO BLEEDING |
5 |
|
OIL ABSORPTION |
35-40% |
|
SPECIFIC SURFACE |
30 m 2 /g |
|
DENSITY |
1.50 g/cm 3 |
|
RESIDUE ON 80 MESH |
5.0% max |
|
WATER SOLUBLE |
1.0% max |
|
VOLATITE 105 °C |
1.0% max |
|
TINTING STRENGTH |
100-105 % |
Properties of Pigment Orange 5
| Melting point: | 306°C(lit.) |
| Boiling point: | 474.44°C (rough estimate) |
| Density | 1.3138 (rough estimate) |
| refractive index | 1.6300 (estimate) |
| storage temp. | Amber Vial, -20°C Freezer |
| solubility | Chloroform (Very Slightly), Tetrahydrofuran (Slightly, Heated) |
| form | Solid |
| Colour Index | 12075 |
| pka | 13.45±0.50(Predicted) |
| color | Orange to Dark Red |
| BRN | 964718 |
| CAS DataBase Reference | 3468-63-1(CAS DataBase Reference) |
| EPA Substance Registry System | C.I. Pigment Orange 5 (3468-63-1) |
Safety information for Pigment Orange 5
| Signal word | Warning |
| Pictogram(s) |
 Health Hazard GHS08 |
| GHS Hazard Statements |
H341:Germ cell mutagenicity H351:Carcinogenicity |
| Precautionary Statement Codes |
P281:Use personal protective equipment as required. |
Computed Descriptors for Pigment Orange 5
Pigment Orange 5 manufacturer
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