Molecular structure of 1-(4-Fluorophenyl)piperazine dihydrochloride (CAS NO.64090-19-3) is:

Product Name: 1-(4-Fluorophenyl)piperazine dihydrochloride
CAS Registry Number: 64090-19-3
IUPAC Name: [(2S,3S,5R)-2-(hydroxymethyl)-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-3-yl]imino-iminoazanium
Molecular Weight: 268.24926 [g/mol]
Molecular Formula: C₁₀H₁₄N₅O₄
H-Bond Donor: 3
H-Bond Acceptor: 6 
Flash Point: 137.8 °C
Enthalpy of Vaporization: 60.97 kJ/mol
Boiling Point: 363.6 °C at 760 mmHg
Vapour Pressure: 1.78E-05 mmHg at 25°C
Melting Point: 231-234 °C(lit.)
Product Categories: Nitrogen cyclic compounds; PiperazineDerivative

Safty information about 1-(4-Fluorophenyl)piperazine dihydrochloride (CAS NO.64090-19-3) is:
Hazard Codes: T,Xi
Risk Statements: 23/24/25-36/37/38
23/24/25:  Toxic by inhalation, in contact with skin and if swallowed 
36/37/38:  Irritating to eyes, respiratory system and skin 
Safety Statements: 22-26-36/37/39-45
22:  Do not breathe dust 
26:  In case of contact with eyes, rinse immediately with plenty of water and seek medical advice 
36/37/39:  Wear suitable protective clothing, gloves and eye/face protection 
45:  In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) 
RIDADR: UN 2811 6.1/PG 2
WGK Germany: 3
Hazard Note: Irritant
HazardClass: 6.1
PackingGroup: II

 1-(4-Fluorophenyl)piperazine dihydrochloride , its cas register number is 64090-19-3. It also can be called 1-(4-Fluorophenyl)piperazine 2HCL.
First Aid Measures about it:
Ingestion:
Seek medical assistance.
Inhalation:
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult.
Skin:
Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin.
Eyes:
Immediately flush with running water for at least 20 minutes.