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HomeProduct name listFLAVANTHRONE

FLAVANTHRONE

  • CAS NO.:475-71-8
  • Empirical Formula: C28H12N2O2
  • Molecular Weight: 408.41
  • MDL number: MFCD00046959
  • EINECS: 207-498-0
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-03-19 15:37:51
FLAVANTHRONE Structural

What is FLAVANTHRONE?

Chemical properties

Brownish-yellow needles. Soluble in dilute alkaline solutions.

The Uses of FLAVANTHRONE

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 %

Properties of FLAVANTHRONE

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
Colour Index  70600
pka -0.82±0.20(Predicted)
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 information for FLAVANTHRONE

Computed Descriptors for FLAVANTHRONE

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