FLAVANTHRONE CAS #475-71-8
| FLAVANTHRONE Basic information |
| Product Name: |
FLAVANTHRONE |
| Synonyms: |
FLAVANTHRONE;PIGMENT YELLOW 24;benzo[h]benz[5,6]acridino[2,1,9,8-klmna]acridine-8,16-dione;C.I.Vatyellow1;VatyellowG;Vat Yellow 1;Vat Yellow G(super fine powder);Flavantfrone Y-G (Pigment Yellow 24) |
| CAS: |
475-71-8 |
| MF: |
C28H12N2O2 |
| MW: |
408.41 |
| EINECS: |
207-498-0 |
| Product Categories: |
Organics |
| Mol File: |
475-71-8.mol |
 |
|
| FLAVANTHRONE Chemical Properties |
| Boiling point |
730.1±55.0 °C(Predicted) |
| density |
1.575±0.06 g/cm3(Predicted) |
| storage temp. |
Sealed in dry,Room Temperature |
| solubility |
Sulfuric Acid (Slightly) |
| form |
Solid |
| pka |
-0.82±0.20(Predicted) |
| Colour Index |
70600 |
| color |
Very Dark Red to Very Dark Brown |
| CAS DataBase Reference |
475-71-8 |
| EPA Substance Registry System |
Benzo[h]benz[5,6]acridino[2,1,9,8-klmna]acridine-8,16-dione (475-71-8) |
| Safety Statements |
22-24/25 |
|
| FLAVANTHRONE Usage And Synthesis |
| Chemical Properties |
Brownish-yellow needles. Soluble in dilute alkaline solutions. |
| Uses |
Vat dye for textiles, etc. |
| Synthesis |
Flavanthrone is prepared from 1-chloro- 2-phthalimidoanthraquinone via the 2,2′- diphthalimido-1,1′-bianthraquinonyl, using copper in boiling trichlorobenzene. The alkaline ring closure is accomplished by boiling with excess 3 – 5 % sodium hydroxide, which cleaves both phthalic acid residues simultaneously . Only the unsubstituted flavanthrone is used as a vat dye and pigment. |
| Properties and Applications |
| TEST ITEMS |
SPECIFICATION |
| APPEARANCE |
YELLOW POWDER |
| SHADE |
GREENISH |
| HEAT RESISTANCE |
180 °C min |
| LIGHT FASTNESS |
7 |
| ACID RESISTANCE |
5 |
| ALKALI RESISTANCE |
5 |
| FASTNESS TO BLEEDING |
5 |
| OIL ABSORPTION |
45-50% |
| SPECIFIC SURFACE |
27 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 % |
|
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