| Identification | More | [Name]
1,4-Dihydroxyanthraquinone | [CAS]
81-64-1 | [Synonyms]
1,4-dihydroxy-9,10-anthracenedione
1,4-DIHYDROXYANTHRAQUINONE
1,4 DIHYROXY AQ
CI 58050
CI NO 58050
DSD ACID
LABOTEST-BB LT00052844
PIGMENT VIOLET 12
QUINAZARIN
QUINIZARIN
QUINIZARINE
Solvent Orange 86
1,4-dihydroxy-10-anthracenedione
1,4-dihydroxy-9,10(9H,10H)anthracenedione
1,4-Dihydroxy-9,10-anthraquinone
1,4-Dihydroxyanthra-9,10-quinone
1,4-Dihydroxyanthrachinon
1,4-dihydroxyanthrachinon(czech)[qr]
1,4-dihydroxy-anthraquinon
1,4-Dioxyanthraquinone | [EINECS(EC#)]
201-368-7 | [Molecular Formula]
C14H8O4 | [MDL Number]
MFCD00001209 | [Molecular Weight]
240.21 | [MOL File]
81-64-1.mol |
| Chemical Properties | Back Directory | [Appearance]
orange to red-brown crystalline powder | [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 | [Colour Index ]
58050 | [form ]
powder
| [pka]
pK (18°) 9.51 | [color ]
red-brown
| [Water Solubility ]
<1 g/L (20 ºC) | [Merck ]
14,8064 | [BRN ]
1914036 | [InChIKey]
GUEIZVNYDFNHJU-UHFFFAOYSA-N | [Uses]
Antioxidant in synthetic lubricants, dyes.
| [CAS DataBase Reference]
81-64-1(CAS DataBase Reference) | [NIST Chemistry Reference]
9,10-Anthracenedione, 1,4-dihydroxy-(81-64-1) | [EPA Substance Registry System]
81-64-1(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
Xi | [Risk Statements ]
R36/37/38:Irritating to eyes, respiratory system and skin .
R43:May cause sensitization by skin contact. | [Safety Statements ]
S22:Do not breathe dust .
S24/25:Avoid contact with skin and eyes .
S36/37:Wear suitable protective clothing and gloves .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice . | [RIDADR ]
UN 3077 9 / PGIII | [WGK Germany ]
2
| [RTECS ]
CB6600000
| [TSCA ]
Yes | [PackingGroup ]
III | [HS Code ]
29146990 | [Safety Profile]
Poison 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. | [Hazardous Substances Data]
81-64-1(Hazardous Substances Data) | [Toxicity]
LD50 orally in Rabbit: > 5000 mg/kg |
| Hazard Information | Back Directory | [Chemical Properties]
orange to red-brown crystalline powder | [Definition]
ChEBI: 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 | [Preparation]
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 Description]
1,4-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 Explosibility]
Nonflammable | [Properties and Applications]
orange. 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. | [Purification Methods]
Crystallise quinizarin from glacial acetic acid. [Beilstein 8 H 450, 8 IV 3260.] |
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