Empirical Formula: C₁₆H₁₄
Molecular Weight: 206.2824 
EINECS: 212-308-4 
Index of Refraction: 1.676
Density: 1.084 g/cm³
Flash Point: 169.1 °C
Enthalpy of Vaporization: 59.35 kJ/mol
Boiling Point: 370.8 °C at 760 mmHg
Vapour Pressure: 2.3E-05 mmHg at 25 °C
Melting point: 182-184 °C(lit.)
Appearance: Yellow crystals or crystalline powder
Structure of 9,10-Dimethylanthracene (CAS NO.781-43-1):
                         
IUPAC Name: 9,10-Dimethylanthracene
Canonical SMILES: CC1=C2C=CC=CC2=C(C3=CC=CC=C13)C
InChI: InChI=1S/C16H14/c1-11-13-7-3-5-9-15(13)12(2)16-10-6-4-8-14(11)16/h3-10H,1-2H3
InChIKey: JTGMTYWYUZDRBK-UHFFFAOYSA-N
Product Category: Anthracenes;Arenes;Organic Building Blocks;Alpha Sort;Analytical Standards;AromaticsVolatiles/ Semivolatiles;Chemical Class;Hydrocarbons;NeatsAnalytical Standards;PAHs

 9,10-Dimethylanthracene (CAS NO.781-43-1) has been used for organic synthesis.

First, having the reaction of Anthraquinone with  Methyl magnesium iodide to get 9,10 - Dimethyl -9,10 - dihydroxy anthracene , and then, in the presence of Acetic acid , Zinc and Sulfourea , having dehydroxylation to get the product.

 9,10-Dimethylanthracene (CAS NO.781-43-1) hasn't been listed as a carcinogen by NTP, IARC, ACGIH, or CA Prop 65. You can see actual entry in RTECS for complete information.

EPA Genetic Toxicology Program.

Questionable carcinogen with experimental carcinogenic and tumorigenic data. Mutation data reported. When heated to decomposition it emits acrid smoke and irritating fumes.
Hazard Codes: Xn
Risk Statements: 20/21-42/43 
R20/21:Harmful by inhalation and in contact with skin. 
R42/43:May cause sensitization by inhalation and skin contact.
Safety Statements: 36/39 
S36:Wear suitable protective clothing. 
S39:Wear eye / face protection.

 9,10-Dimethylanthracene , its cas register number is 781-43-1. It also can be called NSC 4220 ; CCRIS 2742 ; and Anthracene, 9,10-dimethyl- . It is hazardous, so the first aid measures and others should be known. Such as: When on the skin: first, should flush skin with plenty of water immediately for at least 15 minutes while removing contaminated clothing. Secondly, get medical aid. Or in the eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Then get medical aid soon. While, it's inhaled: Remove from exposure and move to fresh air immediately. Give artificial respiration while not breathing. When breathing is difficult, give oxygen. And as soon as to get medical aid. Then you have the ingesting of the product: If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid immediately.
In addition, 9,10-Dimethylanthracene (CAS NO.781-43-1) could be stable under normal temperatures and pressures. It is not compatible with strong oxidants. And also prevent it to broken down into hazardous decomposition products: irritating and toxic fumes and gases.