Molecular Formula: C₂₀H₁₂
Molar mass: 252.31 g/mol
EINECS: 205-916-6
Density: 1.286 g/cm³
Flash Point: 228.6 °C
Index of Refraction: 1.887
Boiling Point: 480 °C at 760 mmHg
Vapour Pressure: 6.55E-09 mmHg at 25°C
Melting point: 215-217 °C(lit.)
Storage temp: Approx 4°C
Water solubility: Insoluble
Appearance: Pale yellow needles or yellow crystalline solid
Product categories: Detection;Fluorescent Probes, Labels, Particles and Stains;Derivatization agents;Environmental Standards;Luminescent Compounds;Volatiles/ Semivolatiles;Chemical Class;Hydrocarbons;Biochemicals and Reagents
Structure of Benzo[k]fluoranthene (207-08-9):

XLogP3-AA: 6.4
H-Bond Donor: 0
H-Bond Acceptor: 0
IUPAC Name: Benzo[k]fluoranthene
Canonical SMILES: C1=CC=C2C=C3C4=CC=CC5=C4C(=CC=C5)C3=CC2=C1
InChI: InChI=1S/C20H12/c1-2-6-15-12-19-17-10-4-8-13-7-3-9-16(20(13)17)18(19)11-
14(15)5-1/h1-12H 
InChIKey: HAXBIWFMXWRORI-UHFFFAOYSA-N

Carcinogenicity of Benzo[k]fluoranthene (207-08-9) 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.

NTP 10th Report on Carcinogens. IARC Cancer Review: Group 2B IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 7 (1987),p. 56.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Animal Sufficient Evidence IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 32 (1983),p. 163.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) ; Human No Adequate Data IMEMDT    IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man . 32 (1983),p. 163.(World Health Organization, Internation Agency for Research on Cancer,Lyon, France.: ) (Single copies can be ordered from WHO Publications Centre U.S.A., 49 Sheridan Avenue, Albany, NY 12210) .

Confirmed carcinogen with experimental tumorigenic data. Mutation data reported. When heated to decomposition it emits acrid smoke and irritating fumes.
 

Hazard Codes: T,N,Xn,F
Risk Statements:
11:  Highly Flammable
36:  Irritating to the eyes
38:  Irritating to the skin
40:  Limited evidence of a carcinogenic effect
45:  May cause cancer
50:  Very Toxic to aquatic organisms
53:  May cause long-term adverse effects in the aquatic environment
65:  Harmful: May cause lung damage if swallowed
66:  Repeated exposure may cause skin dryness or cracking
67:  Vapors may cause drowsiness and dizziness
Safety Statements:
26:  In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
36:  Wear suitable protective clothing
37:  Wear suitable gloves
45:  In case of accident or if you feel unwell, seek medical advice immediately (show label where possible)
53:  Avoid exposure - obtain special instruction before use
60:  This material and/or its container must be disposed of as hazardous waste
61:  Avoid release to the environment. Refer to special instructions safety data sheet
62:  If swallowed, do not induce vomiting: seek medical advice immediately and show this container or label

For occupational chemical analysis use NIOSH: Polynuclear Aromatic Hydrocarbons (HPLC), 5506; (GC), 5515.

 Benzo[k]fluoranthene (207-08-9) also can be called 11,12-Benzofluoranthene ; 8,9-Benzofluoranthene ;  8,9-Benzfluoranthene ; 11,12-Benzo(k)fluoranthene and Dibenzo[b,jk]fluorene .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 shoesmedical 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 : Wash mouth out with water,and get medical aid immediately.
In addition, Benzo[k]fluoranthene (207-08-9) can be stable under normal temperature and pressure conditions.It is not compatible with strong oxidizing agents, and you must not take it with incompatible materials.And also prevent it to broken down into hazardous decomposition products: carbon dioxide, carbon monoxide.