1,4-Diamino-2,3-dihydroanthraquinone

1,4-Diamino-2,3-dihydroanthraquinone

IUPAC name 1,4-Diaminoanthracene-9,10-dione
Other names Solvent violet 47
Identifiers
CAS number	81-63-0
PubChem	5354979
ChemSpider	4511053^Y
Jmol-3D images	Image 1
SMILES O=C/2c1ccccc1C(=O)C=3/C\2=C(/N)CCC=3N
InChI InChI=1S/C14H12N2O2/c15-9-5-6-10(16)12-11(9)13(17)7-3-1-2-4-8(7)14(12)18/h1-4H,5-6,15-16H2^Y Key: SSGALQHXKMAJTL-UHFFFAOYSA-N^Y
Properties
Molecular formula	C₁₄H₁₂N₂O₂
Molar mass	240.26 g mol⁻¹
Appearance	Dark greenish to brownish powder
Density	1.4 g/cm³
Melting point	248-252 °C, 521-525 K, 478-486 °F
Boiling point	375.1 °C, 648 K, 707 °F
Solubility in water	Soluble in hot nitrobenzene
Hazards
Main hazards	Mutagenic; emits NO_x vapors when heated to decomposition.
Flash point	180.7 °C
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

1,4-Diamino-2,3-dihydroanthraquinone is an anthraquinone dye used with Disperse Red 9 in colored smoke to introduce a violet color. It is also used in dyes and marine flares.

synthesis

1,4-Diaminoanthraquinone is reacted with sodium dithionite to produce 1,4-diamino-2,3-dihydroanthraquinone.^[1]