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1-Methylpiperazine Structure

1-Methylpiperazine

Chemical Properties

Melting point −6 °C (21 °F; 267 K)
Boiling point 138 °C (280 °F; 411 K)
Density  0.91
vapor density  3.5 (vs air)
vapor pressure  12 hPa (20 °C)
refractive index  1.47
Flash point 42 °C
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  clear liquid
color  Colorless to Almost colorless
Specific Gravity 0.903
PH 11-12 (50g/l, H2O, 20℃)
Odor Foul odor
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)

Safety Information

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  TSCA listed
HazardClass  3
PackingGroup  III
HS Code  29335995
Storage Class 3 - Flammable liquids
Hazard Classifications Acute Tox. 4 Dermal
Acute Tox. 4 Inhalation
Eye Dam. 1
Flam. Liq. 3
Skin Corr. 1B
Skin Sens. 1B
Toxicity LD50 orally in Rabbit: 2547 mg/kg LD50 dermal Rabbit 1341 mg/kg

MSDS

Usage And Synthesis

Preparation Products And Raw materials

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