- FLAVANTHRONE
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- $1.00 / 1kg
-
2019-07-06
- CAS:475-71-8
- Min. Order: 1kg
- Purity: as request
- Supply Ability: 500kg
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| | 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 |
| | 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 |
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TEST ITEMS
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SPECIFICATION
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APPEARANCE
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YELLOW POWDER
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SHADE
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GREENISH
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HEAT RESISTANCE
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180 °C min
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LIGHT FASTNESS
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7
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ACID RESISTANCE
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5
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ALKALI RESISTANCE
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5
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FASTNESS TO BLEEDING
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5
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OIL ABSORPTION
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45-50%
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SPECIFIC SURFACE
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27 m
2
/g
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DENSITY
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1.50 g/cm
3
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RESIDUE ON 80 MESH
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5.0% max
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WATER SOLUBLE
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1.0% max
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VOLATITE 105 °C
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1.0% max
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TINTING STRENGTH
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100-105 %
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| | FLAVANTHRONE Preparation Products And Raw materials |
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