Benzanthrone

Title: Benzanthrone
CAS Registry Number: 82-05-3
CAS Name: 7H-Benz[de]anthracen-7-one
Molecular Formula: C17H10O
Molecular Weight: 230.26
Percent Composition: C 88.67%, H 4.38%, O 6.95%
Literature References: Prepd by heating a reduction product of anthraquinone with sulfuric acid and glycerol: Macleod, Allen, Org. Synth. 14, 4 (1934); cf. US 1626392 (1927). Review of toxicology: G. B. Singh et al., J. Sci. Ind. Res. 49, 288-296 (1990).
Properties: Pale yellow needles from alcohol or xylene. mp 170°. Absorption spectrum: Clar, Ber. 65, 846 (1932). Solubility at 20° = 0.52 g in 100 g glacial acetic acid; 1.61 g in 100 g benzene; 2.05 g in 100 g chlorobenzene. Solution in H2SO4 is orange with green fluorescence. LD50 in albino rabbits: >3 g/kg dermally; LD50 in rats, mice (g/kg): 1.5, 0.29 i.p. (Singh).
Melting point: mp 170°
Toxicity data: LD50 in albino rabbits: >3 g/kg dermally; LD50 in rats, mice (g/kg): 1.5, 0.29 i.p. (Singh)
Use: Manufacture of dyes.
Benzarone Benzathine Benzbromarone Benzenearsonic Acid Benzeneboronic Acid

Benzanthrone
Skeletal formula of benzanthrone
Ball-and-stick model
Identifiers
CAS number 82-05-3 YesY
ChemSpider 6442 YesY
Jmol-3D images Image 1
Properties
Molecular formula C17H10O
Molar mass 230.26 g mol−1
Melting point 170 °C
Solubility in water Insoluble
Hazards
S-phrases S24 S25 S26 S28A S37 S39 S45
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Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

Benzanthrone (BZA) is an aromatic hydrocarbon derivate used as a dyestuff intermediate for anthraquinone-based dyes. It has the appearance of a light yellow to brown-green powder with melting point of 170 °C. It is insoluble in water and soluble in alcohol. It is a basic substance with fluorescent and luminescent properties. It can be used for photosensitization, and as a charge transport material. It is also used in pyrotechnics industry, mainly as a component of some older formulations of green and yellow colored smokes, often together with Vat Yellow 4; its US military specification is MIL-D-50074D[1].

Its EINECS number is 201-393-3. It is reported to cause itching and burning sensation on exposed skin, together with erythema, dermatitis, and skin pigmentation.[2]