DIBENZANTHRONE
- Product Name
- DIBENZANTHRONE
- CAS No.
- 116-71-2
- Chemical Name
- DIBENZANTHRONE
- Synonyms
- Blue BO;c.i.59800;C.I. 59815;C.I. 59800;VAT BLUE 20;Vat Blue 18;bianthronea;vat blue BO;VIOLANTHRONE;vatdarkblueo
- CBNumber
- CB1693094
- Molecular Formula
- C34H16O2
- Formula Weight
- 456.49
- MOL File
- 116-71-2.mol
DIBENZANTHRONE Property
- Melting point:
- 338-339 °C
- Boiling point:
- 522.64°C (rough estimate)
- Density
- 1.1055 (rough estimate)
- refractive index
- 1.4875 (estimate)
- storage temp.
- Sealed in dry,Room Temperature
- CAS DataBase Reference
- 116-71-2(CAS DataBase Reference)
- NIST Chemistry Reference
- Dibenzanthrone(116-71-2)
- EPA Substance Registry System
- Violanthrone (116-71-2)
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
- Precautionary statements
-
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
N-Bromosuccinimide Price
- Product number
- S468398
- Product name
- VAT BLUE 18 (C.I. 59815)
- Purity
- AldrichCPR
- Packaging
- 250MG
- Price
- $179
- Updated
- 2024/03/01
- Product number
- FRL0000562
- Product name
- DIBENZANTHRONE
- Purity
- 95.00%
- Packaging
- 1G
- Price
- $289.8
- Updated
- 2021/12/16
- Product number
- FA143390
- Product name
- Anthra[9,1,2-cde]benzo[rst]pentaphene-5,10-dione
- Packaging
- 2g
- Price
- $297
- Updated
- 2021/12/16
- Product number
- 100278
- Product name
- Anthra[9,1,2-cde]benzo[rst]pentaphene-5,10-dione
- Purity
- 95+%
- Packaging
- 250mg
- Price
- $435
- Updated
- 2021/12/16
- Product number
- FA143390
- Product name
- Anthra[9,1,2-cde]benzo[rst]pentaphene-5,10-dione
- Packaging
- 500mg
- Price
- $100
- Updated
- 2021/12/16
DIBENZANTHRONE Chemical Properties,Usage,Production
Description
Violanthrone, Indanthren Dark Blue BOA,is generated by potash fusion of benzanthrone , . Direct potash fusion leads to side products, such as isoviolanthrone and 4-hydroxybenzanthrone. The crude product may be used directly or in mixtures with other dyes in vat dyeing. It is also used to generate violanthrone derivatives. Several processes have been developed to decrease the amounts of undesirable side products of the direct potash fusion of benzanthrone or to purify the bibenzanthronyl or the crude violanthrone . Especially effective is the addition of high-boiling solvents such as naphthalene, the so-called low carbazole anthracene residues, or sodium acetate to the melt. The quality of the products prepared by these methods is satisfactory for the production of almost all violanthrone dyes.
General Description
Bluish-black to black powder.
Air & Water Reactions
Insoluble in water.
Fire Hazard
Flash point data for DIBENZANTHRONE are not available. DIBENZANTHRONE is probably combustible.
Flammability and Explosibility
Not classified
Synthesis
Violanthrone of high purity is obtained
from 4,4'-bibenzanthronyl (153) by alkaline or
acid ring closure, preferably in the presence
of oxidizing agents , . If this ring
closure is carried out in sulfuric acid with
an excess of manganese dioxide, the 16,17-
violanthronequinone (155) is obtained. This can
be reduced readily with sodium hydrogen sulfite
to 16,17-dihydroxyviolanthrone (156). Subsequent
alkylation of the hydroxy groups yields
very fast navy-blue to brilliant-green vat dyes.
The dimethyl ether (157) is the well-known
dye Caledon Jade Green or Indanthren Brilliant
Green B and FFB (extremely pure form).
Properties and Applications
|
TEST ITEMS |
SPECIFICATION |
|
APPEARANCE |
BLUE POWDER |
|
SHADE |
REDDISH |
|
HEAT RESISTANCE |
300 °C min |
|
LIGHT FASTNESS |
8 |
|
ACID RESISTANCE |
5 |
|
ALKALI RESISTANCE |
5 |
|
FASTNESS TO BLEEDING |
5 |
|
OIL ABSORPTION |
40-50% |
|
SPECIFIC SURFACE |
27 m 2 /g |
|
DENSITY |
1.60 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 % |
DIBENZANTHRONE Preparation Products And Raw materials
Raw materials
Preparation Products
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View Lastest Price from DIBENZANTHRONE manufacturers
- Product
- DIBENZANTHRONE 116-71-2
- Price
- US $2.00/kg
- Min. Order
- 1kg
- Purity
- 99%
- Supply Ability
- 100kg
- Release date
- 2018-12-23