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1-Methylpiperazine Structure

1-Methylpiperazine

Chemical Properties

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)
form  Liquid
pka pK1:4.94(+2);pK2:9.09(+1) (25°C,μ=0.1)
Specific Gravity 0.903
color  Clear
PH 11-12 (50g/l, H2O, 20℃)
explosive limit 1.2-9.9%(V)
Viscosity 2.27mm2/s
Water Solubility  soluble
Sensitive  Hygroscopic
BRN  102724
InChIKey PVOAHINGSUIXLS-UHFFFAOYSA-N
LogP -0.57 at 25℃
CAS DataBase Reference 109-01-3(CAS DataBase Reference)
FDA UNII B92I95EL9Q
NIST Chemistry Reference Piperazine, 1-methyl-(109-01-3)
EPA Substance Registry System Piperazine, 1-methyl- (109-01-3)
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Safety

Symbol(GHS) GHS hazard pictogramsGHS hazard pictogramsGHS hazard pictograms
Signal wordDanger
Hazard statements H226-H312-H314-H331
Precautionary statements P210-P260-P280-P304+P340+P310-P305+P351+P338-P370+P378
Hazard Codes  T,F,C,Xi
Risk Statements  10-21-23-34-36/37/38-20/21
Safety Statements  16-26-36/37/39-45-36
RIDADR  UN 2734 8/PG 2
WGK Germany  2
RTECS  TM1225000
Autoignition Temperature 320 °C
Hazard Note  Flammable/Toxic/Corrosive/Store under nitrogen
TSCA  Yes
HazardClass  3
PackingGroup  III
HS Code  29335995
Toxicity LD50 orally in Rabbit: 2547 mg/kg LD50 dermal Rabbit 1341 mg/kg
NFPA 704:
2
2 0

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