ChemicalBook > CAS DataBase List > DIBENZANTHRONE

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

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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
Appearance: Brown to black Solid
CAS DataBase Reference: 116-71-2(CAS DataBase Reference)
NIST Chemistry Reference: Dibenzanthrone(116-71-2)
EPA Substance Registry System: Violanthrone (116-71-2)

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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.

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: S468398
Product name: VAT BLUE 18 (C.I. 59815)
Purity: Aldrich<sup>CPR</sup>
Packaging: 1 unit
Price: $185
Updated: 2025/07/31

Sigma-Aldrich

Product number: S468398
Product name: VAT BLUE 18 (C.I. 59815)
Purity: AldrichCPR
Packaging: 250MG
Price: $179
Updated: 2024/03/01

Biosynth Carbosynth

Product number: FA143390
Product name: Anthra[9,1,2-cde]benzo[rst]pentaphene-5,10-dione
Packaging: 250mg
Price: $55
Updated: 2021/12/16

Biosynth Carbosynth

Product number: FA143390
Product name: Anthra[9,1,2-cde]benzo[rst]pentaphene-5,10-dione
Packaging: 500mg
Price: $100
Updated: 2021/12/16

AK Scientific

Product number: T900
Product name: VarBlue20
Packaging: 250mg
Price: $126
Updated: 2021/12/16

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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

Sodium acetate Triethylene glycol Diffusing agent Nitrogen Naphthalene Potassium hydroxide Sodium acetate trihydrate Benzanthrone Sodium chlorate

Preparation Products

INDANTHRENE BLACK BBN vat black 16 Vat Dark Blue VB Anthra[9,1,2-cde]benzo[rst]pentaphene-5,10-dione, chloro derivs. Vat Black 9

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View Lastest Price from DIBENZANTHRONE manufacturers

Career Henan Chemical Co

Product: DIBENZANTHRONE 116-71-2
Price: US $2.00/kg
Min. Order: 1kg
Purity: 99%
Supply Ability: 100kg
Release date: 2018-12-23

116-71-2, DIBENZANTHRONERelated Search:

Anthra[9,1,2-cde]benzo[rst]pentaphene-5,10-dione, chloro derivs. Vat Blue 19 Vat Blue 6 Vat Blue 14 Vat Orange 7 Vat Green 1 Vat Brown 72 Vat Yellow 33 Vat Green 8 Vat Brown 57 N-[5,8,13,14-tetrahydro-5,8,14-trioxo-11-(trifluoromethyl)naphth[2,3-c]acridin-6-yl]benzamide 5-bromo-2-(5-bromo-4-chloro-1,3-dihydro-3-oxo-2H-indol-2-ylidene)-4-chloro-1,2-dihydro-3H-indol-3-one 17,18-dihydrodinaphtho[1',2',3':3,4;3'',2'',1'':9,10]perylo[1,12-efg][1,4]dioxocin-5,10-dione VAT BLUE 12 C.I. Vat Blue 15 INDANTHRENE BLACK BBN Anthrone Bianthrone

sandothrenedarkbluenbo

sandothrenedarkbluenboa

sandothrenedarkbluenmba

Solanthrene Dark Blue B

Solanthrene Dark Blue BA

Solanthrene Dark Blue F-BA

Vat Dark Blue BO UL Conc

VAT BLUE 20

VIOLANTHRONE

Anthramar Dark Blue BO

Cibanone Blue BOA-01

Dycosthren Dark Blue

Hebeithrene Dark Blue BO

Intravat Dark Blue BO

Patcovat Dark Blue BOA

Sandothrene Liquid Dark Blue NBO

Trianthrene Dark Blue BOA

Youhaothrene Dark Blue BO.

5,10-Violanthrenedione

Ahcovat Dark Blue BO

ahcovatdarkbluebo

Amanthrene Dark Blue BO

Amanthrene Supra Dark Blue BO

amanthrenedarkbluebo

fenanthrendarkbluebo

Hydroform Deep Blue BOA

hydroformdeepblueboa

Indanthren Dark Blue BOA

IndanthrenDarkBlueBO

indanthrendarkblueboa

Indanthrene Dark Blue BO

indanthrenedarkbluebo

Irgalite Blue 2R

irgaliteblue2r

Leucosol Dark Blue BR

leucosoldarkbluebr

sandothrenedarkblueboa

sandothrenedarkbluenbm

Vat blue 20 (C.I. 59800)

Blue BO

C.I. 59815

Vat Blue 18

DIBENZANTHRONE

solanthrenedarkblueb

solanthrenedarkblueba

solanthrenedarkblueboa

solanthrenedarkbluef-ba

Tinon Dark Blue BO

Tinon Dark Blue BOA

Tinon Dark Blue BOR

Tinon Dark Blue MB

Tinon Dark Blue MBA

tinondarkbluebo

tinondarkblueboa

tinondarkbluebor

tinondarkbluemb

tinondarkbluemba

Tyrian Dark Blue I-BOA