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1,4-Dihydroxyanthraquinone

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1,4-Dihydroxyanthraquinone Basic information
Product Name:1,4-Dihydroxyanthraquinone
Synonyms:CI NO 58050;CI 58050;LABOTEST-BB LT00052844;1,4-dihydroxy-10-anthracenedione;1,4-dihydroxy-9,10(9H,10H)anthracenedione;1,4-Dihydroxyanthra-9,10-quinone;1,4-Dihydroxyanthrachinon;9,10-anthracenedione,1,4-dihydroxy-
CAS:81-64-1
MF:C14H8O4
MW:240.21
EINECS:201-368-7
Product Categories:Intermediates of Dyes and Pigments;Solvent Dyestuff;Anthraquinones, Hydroquinones and Quinones;Anthraquinones;Hydroxyanthraquinones;1;john's;81-64-1
Mol File:81-64-1.mol
1,4-Dihydroxyanthraquinone Structure
1,4-Dihydroxyanthraquinone Chemical Properties
Melting point 195-200 °C
Boiling point 450 °C
density 1.3032 (rough estimate)
vapor density 8.3 (vs air)
vapor pressure 1 mm Hg ( 196.7 °C)
refractive index 1.5430 (estimate)
Fp 222 °C
storage temp. Store below +30°C.
solubility <1g/l
pkapK (18°) 9.51
Colour Index 58050
form powder
color red-brown
Water Solubility <1 g/L (20 ºC)
Merck 14,8064
BRN 1914036
InChIKeyGUEIZVNYDFNHJU-UHFFFAOYSA-N
LogP4.2 at 25℃
CAS DataBase Reference81-64-1(CAS DataBase Reference)
NIST Chemistry Reference9,10-Anthracenedione, 1,4-dihydroxy-(81-64-1)
EPA Substance Registry SystemQuinizarin (81-64-1)
Safety Information
Hazard Codes Xi,N
Risk Statements 36/37/38-43-50/53
Safety Statements 22-24/25-36/37-26-61-60
RIDADR UN 3077 9 / PGIII
WGK Germany 2
RTECS CB6600000
TSCA Yes
HS Code 2914 69 80
PackingGroup III
Hazardous Substances Data81-64-1(Hazardous Substances Data)
ToxicityLD50 orally in Rabbit: > 5000 mg/kg
MSDS Information
ProviderLanguage
1,4-Dihydroxy-9,10-anthracenedione English
SigmaAldrich English
ACROS English
ALFA English
1,4-Dihydroxyanthraquinone Usage And Synthesis
Chemical Propertiesorange to red-brown crystalline powder
Uses1,4-Dihydroxyanthraquinone is used to color gasoline and some heating oils. It is used as an intermediate for the synthesis of indanthrene- and alizarin-derived dyes. It is also used to form lake pigments with calcium, barium and lead. It may be used in the synthesis of cyclopentanoids by cyclization of α,β-unsaturated aldehyde with 1,4-Dihydroxyanthraquinone. It has been studied as a long range emissive ratiometric fluorescent probe for live cell imaging.
Uses1,4-Dihydroxyanthraquinone, also known as quinizarin, is of great importance in manufacturing disperse, acid, and vat dyes.
UsesAntioxidant in synthetic lubricants, dyes.
DefinitionChEBI: Quinizarin is a dihydroxyanthraquinone having the two hydroxy substituents at the 1- and 4-positions; formally derived from anthraquinone by replacement of two hydrogen atoms by hydroxy groups It has a role as a dye.
Manufacturing Process1,4-Dihydroxyanthraquinone is commonly known as Quinizarin.
(a) Boric acid, boric acid and mercury, boric acid and nitrous acid or nitrous acid and mercury in the presence of Anthracene-9,10-dione with sulfuric acid;
(b) In the presence of boric acid and nitrous acid, treated with sulfuric acid 1-Hydroxyanthracene-9,10-dione or 2-Hydroxyanthracene-9,10-dione,
(c)In the presence of boric acid, treated with sulfuric acid 1-Hydroxy-4-nitroanthracene-9,10-dione or 1,4-Dichloroanthracene-9,10-dione;
(d) in the Boric acid and where did in the presence of sulfuric acid, Phthalic anhydride and 4-Chlorophenol ;or Hydroquinone condensation, closed loop.
Synthesis Reference(s)Synthesis, p. 633, 1974 DOI: 10.1055/s-1974-23387
Tetrahedron Letters, 28, p. 1533, 1987 DOI: 10.1016/S0040-4039(01)81035-2
General Description1,4-Dihydroxyanthraquinone is an organic dye molecule with an aromatic structure. It is a derivative of anthraquinone bearing hydroxyl moieties. They may find uses in pharmacological, biochemical and dye industries. Anthraquinone dye are resistant to degradation.
Flammability and ExplosibilityNon flammable
Safety ProfilePoison by intravenous route. Moderately toxic by intraperitoneal route. Mutation data reported. An eye irritant. A weak allergen. When heated todecomposition it emits acrid smoke and irritating fumes.
SynthesisAt 250 DEG C, heat boric acid 10h, obtain boric acid dehydration compound; Recording boric anhydride in boric acid dehydration compound through ultimate analysis is 99.3%, tetraboric acid 0.7%;In condensation reaction still, add oleum 350kg, phthalic anhydride 120kg, boric acid dehydration compound 40kg, para-chlorophenol 100kg(oleum: phthalic anhydride: metaboric acid: para-chlorophenol=3.5:1.2:0.4:1); Oil bath is warmed up to material 100 DEG C, accurately controls temperature of reaction 100 ~ 105 DEG C, is incubated 0.5 hour; Binder is in the hydrolysis kettle being added with 300L water, and adjustment temperature to 50 DEG C, 50 DEG C of insulations 0.1 hour, discharging press filtration, is washed to neutrality, dries up and obtains 1,4-hydroxyanthraquinone tide product 400.2kg, detect water ratio 54.2%, give money as a gift product 183.3kg, passes through liquid-phase chromatographic analysis, 1, the content of 4-hydroxyanthraquinone reaches 98.74%, dry product purity 97.12%, and yield is 94.1%.
Purification MethodsCrystallise quinizarin from glacial acetic acid. [Beilstein 8 H 450, 8 IV 3260.]
Properties and Applicationsorange. Orange red powder. Insoluble in water, soluble in ether, in strong base in certain solubility, but soluble in organic solvent oil, etc. In concentrated sulfuric acid in green yellow fluorescence. Mainly used for oil coloring. Also used in all kinds of plastic and resin, light industry products coloring.
Tag:1,4-Dihydroxyanthraquinone(81-64-1) Related Product Information
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