1-Methylpiperazine

Melting point :-6 °C
Boiling point :138 °C(lit.)
Density :0.903 g/mL at 25 °C(lit.)
vapor density :3.5 (vs air)
vapor pressure :12 hPa (20 °C)
refractive index :n20/D 1.466(lit.)
Flash point :108 °F
storage temp. :2-8°C
solubility :Chloroform (Soluble), Methanol (Soluble)
pka :pK1:4.94(+2);pK2:9.09(+1) (25°C,μ=0.1)
form :Liquid
Specific Gravity :0.903
color :Clear
PH :11-12 (50g/l, H2O, 20℃)
explosive limit :1.2-9.9%(V)
Water Solubility :soluble
Sensitive :Hygroscopic
BRN :102724
Henry's Law Constant :1.8×10³ mol/(m³Pa) at 25℃, Nguyen (2013)
InChI :1S/C5H12N2/c1-7-4-2-6-3-5-7/h6H,2-5H2,1H3
InChIKey :PVOAHINGSUIXLS-UHFFFAOYSA-N
SMILES :CN1CCNCC1
LogP :-0.57 at 25℃
Surface tension :30.65mN/m at 298.15K
CAS DataBase Reference :109-01-3(CAS DataBase Reference)
NIST Chemistry Reference :Piperazine, 1-methyl-(109-01-3)
EPA Substance Registry System :Piperazine, 1-methyl- (109-01-3)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H226 Flammable liquid and vapour Flammable liquids Category 3 Warning H312 Harmful in contact with skin Acute toxicity,dermal Category 4 Warning P280,P302+P352, P312, P322, P363,P501 H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501 H331 Toxic if inhaled Acute toxicity,inhalation Category 3 Danger P261, P271, P304+P340, P311, P321,P403+P233, P405, P501
Precautionary statements:	P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P280 Wear protective gloves/protective clothing/eye protection/face protection. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P370+P378 In case of fire: Use … for extinction.